commit 350d6479536cda08f39793601bb7344aa341266e
Author: edu4rdshl <tolosaeduard@gmail.com>
Date:   Mon May 25 03:02:34 2026 -0500

    Initial commit
    
    Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
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+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  daemon:
+    name: Rust daemon
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update -q
+          sudo apt-get install -y libdbus-1-dev pkg-config
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            strata-daemon/target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('strata-daemon/Cargo.lock') }}
+          restore-keys: ${{ runner.os }}-cargo-
+
+      - name: Check formatting
+        run: cargo fmt --manifest-path strata-daemon/Cargo.toml -- --check
+
+      - name: Build
+        run: cargo build --release --manifest-path strata-daemon/Cargo.toml
+
+      - name: Clippy
+        run: cargo clippy --manifest-path strata-daemon/Cargo.toml -- -W clippy::all
+
+      - name: Test
+        run: cargo test --manifest-path strata-daemon/Cargo.toml
+
+  extension:
+    name: GNOME extension
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install glib-compile-schemas
+        run: sudo apt-get update -q && sudo apt-get install -y libglib2.0-bin
+
+      - name: Compile GSettings schema
+        run: glib-compile-schemas strata@edu4rdshl.dev/schemas/
diff --git a/.gitignore b/.gitignore
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+# Rust build artifacts
+strata-daemon/target/
+
+# Bundled binary (no longer shipped - daemon must be installed separately)
+strata@edu4rdshl.dev/bin/
+
+# Screenshots / scratch images
+*.png
+
+# External reference code (not part of this project)
+external_sources/
+
+# Editor / OS
+.vscode/
+.idea/
+.DS_Store
+**/gschemas.compiled
diff --git a/AGENTS.md b/AGENTS.md
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+# AGENTS.md
+
+Guidelines for AI agents working on this codebase.
+
+## Repository layout
+
+```
+strata-daemon/          Rust daemon (tokio, zbus, rusqlite)
+strata@edu4rdshl.dev/   GNOME Shell extension (GJS) - pure JS, no binary
+  schemas/              GSettings schema XML
+  ui/                   Panel and item widgets
+contrib/systemd/        systemd user service unit for distro packaging
+ARCHITECTURE.md         In-depth design document
+```
+
+## Core principle
+
+"JS draws, Rust thinks." The extension must never block the GNOME Shell
+compositor. All heavy work (hashing, storage, search, thumbnails) lives in
+the daemon. The extension only renders and forwards events.
+
+## Build
+
+```bash
+# Build daemon + compile schemas
+make
+
+# Install daemon binary to ~/.local/bin (must be in PATH)
+make install-daemon
+
+# Install extension to ~/.local/share/gnome-shell/extensions/
+make install
+```
+
+## Lint
+
+```bash
+cargo clippy --manifest-path=strata-daemon/Cargo.toml
+```
+
+No linter is configured for GJS. Follow the existing code style.
+
+## Deploy to a test VM
+
+```bash
+# Build and copy daemon binary to VM
+cargo build --release --manifest-path=strata-daemon/Cargo.toml
+scp strata-daemon/target/release/strata-daemon fedoradev:~/.local/bin/
+
+# Sync extension (JS only)
+rsync -a strata@edu4rdshl.dev/ fedoradev:~/.local/share/gnome-shell/extensions/strata@edu4rdshl.dev/ --exclude='.git'
+ssh fedoradev 'glib-compile-schemas ~/.local/share/gnome-shell/extensions/strata@edu4rdshl.dev/schemas/'
+# Then log out and back in (Wayland) or Alt+F2 r (X11)
+```
+
+## Key files
+
+| File | Purpose |
+|---|---|
+| `strata-daemon/src/main.rs` | Entry point, Wayland monitor, GJS submit task, `process_change`/`process_bytes` |
+| `strata-daemon/src/dbus_service.rs` | D-Bus interface, `Limits` struct, all D-Bus methods |
+| `strata-daemon/src/db.rs` | SQLite schema, FTS5, insert, prune, search, thumbnail |
+| `strata-daemon/src/config.rs` | Data dir, DB path (`~/.local/share/strata/clipboard.db`) |
+| `strata@edu4rdshl.dev/extension.js` | Daemon lifecycle (PATH lookup + systemd detection), clipboard ingest, focus tracking, `_pushConfig` |
+| `strata@edu4rdshl.dev/ui/panel.js` | Popup panel, lazy-load pagination, search, `_pageSize` |
+| `strata@edu4rdshl.dev/ui/clipboardItem.js` | Individual row widget |
+| `strata@edu4rdshl.dev/prefs.js` | Preferences window (Adw) |
+| `strata@edu4rdshl.dev/dbus.js` | D-Bus proxy definition and XML interface |
+| `contrib/systemd/strata-daemon.service` | systemd user unit for distro packaging |
+
+## D-Bus interface summary
+
+Service `org.gnome.Strata`, object `/org/gnome/Strata`, interface `org.gnome.Strata.Manager`.
+
+Methods: `GetHistory(offset u32, limit u32) -> json s`,
+`SearchHistory(query s, limit u32) -> json s`,
+`GetThumbnail(id s) -> png_bytes ay`,
+`GetItemContent(id s) -> (mime_type s, content_b64 s)`,
+`SetClipboard(id s)`, `DeleteItem(id s)`, `ClearHistory()`,
+`SetConfig(max_history u32, max_text_bytes u32, max_image_bytes u32)`,
+`SubmitItem(mime s, data ay)`, `SetFocusedApp(app_id s)`, `Shutdown()`.
+
+Signals: `ItemAdded(id s, mime_type s, preview s)`, `ItemDeleted(id s)`, `HistoryCleared()`.
+
+## GSettings keys
+
+`max-history`, `page-size`, `max-text-mb`, `max-image-mb`, `panel-position`,
+`panel-width`, `panel-max-height`, `keyboard-shortcut`, `move-activated-to-top`,
+`excluded-apps`.
+
+## Conventions
+
+- No `--` em-dashes, no emojis in code comments or docs.
+- Rust: use `tracing::info!`, `tracing::warn!`, `tracing::error!` (qualified path, not bare imports). No `println!` in daemon code.
+- GJS: `console.log('[Strata] ...')` / `console.error('[Strata] ...')` prefix for all extension logs.
+- Size limits travel as bytes over D-Bus. MB conversion happens extension-side.
+- `Ordering::Relaxed` is intentional on `Arc<AtomicUsize>` limits (advisory, not critical path).
+- Never execute clipboard content. Writes go through `wl-clipboard-rs` (`copy_multi`) in the daemon, never via shell subprocess or `eval`.
+- Excluded apps list is checked before storing any clipboard item.
diff --git a/ARCHITECTURE.md b/ARCHITECTURE.md
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+# Architecture
+
+In-depth companion to [`README.md`](README.md). Covers how Strata is put
+together and the trade-offs at each layer.
+
+## Design goals
+
+1. Never block the GNOME Shell main loop.
+2. Never lose history. SQLite WAL, atomic upserts, daemon supervisor.
+3. Heavy work lives in Rust; the extension only renders UI and forwards
+   events.
+4. Mime allowlist, size caps, password-manager opt-out, no shell exec,
+   no markup parsing of clipboard content.
+
+## Topology
+
+```
++---------------------------- GNOME Shell process (GJS) ---------------------------+
+|                                                                                  |
+|   Meta.Selection --> extension.js --> dbus.js (Gio.DBusProxy) ---+               |
+|                                                                  |               |
+|   panel.js <----------- ui/clipboardItem.js <--------------------+               |
+|        ^                                                                         |
+|        | ItemAdded / ItemDeleted / HistoryCleared                                |
++--------+-------------------------------------------------------------------------+
+         |
+         | session D-Bus (org.gnome.Strata)
+         v
++----------------------- strata-daemon (Rust process) --------------------------+
+|                                                                               |
+|   zbus interface --> tokio executor --> spawn_blocking --> rusqlite (Mutex)   |
+|                              |                                  |             |
+|                              |                                  v             |
+|                              |                       +---------------------+  |
+|                              |                       | SQLite (WAL, FTS5)  |  |
+|                              |                       +---------------------+  |
+|                              v                                                |
+|                   image::load_from_memory --> PNG thumbnail (~256 px)         |
+|                                                                               |
++-------------------------------------------------------------------------------+
+```
+
+## Process model
+
+### Separate daemon
+
+GJS is single-threaded and shares its main loop with the entire GNOME Shell
+compositor. Any synchronous syscall, hash computation, or SQLite query in
+JS can freeze the desktop. Strata moves all of it across a process
+boundary. The cost is one IPC hop per operation; D-Bus is shared-memory
+fast on the same machine, and the extension never `await`s anything in the
+hot ingest path (it fires `SubmitItem` and returns immediately).
+
+### Daemon supervisor
+
+`extension.js` owns the daemon. On enable it `Gio.Subprocess.spawnv`s
+`bin/strata-daemon` and registers a watchdog:
+
+- If the child exits, schedule a respawn with exponential backoff
+  (1 s, 2 s, 4 s, capped at 30 s).
+- After 5 rapid restarts within 60 s, stop and surface a notification.
+- On disable, send `Shutdown` over D-Bus first, then `SIGTERM` if it
+  doesn't exit within 2 s.
+
+### Startup
+
+The extension listens for `notify::g-name-owner` on the D-Bus proxy. When
+the daemon's `org.gnome.Strata` name becomes owned, the panel triggers
+its initial fetch. No polling, no fixed delays.
+
+## Ingest path
+
+```
+Meta.Selection.OwnerChanged
+    |
+    +-- _readClipboard()
+        |
+        +-- _pickMime() enforces strict allowlist
+        +-- skip if x-kde-passwordManagerHint present
+        +-- Meta.Selection.transfer_async() --> Uint8Array
+        +-- SubmitItemAsync(mime, rawBytes)  (D-Bus 'ay')
+                |
+                v
+        daemon::dbus_service::submit_item(mime, Vec<u8>)
+                |
+                +-- spawn_blocking(move || {
+                       hash = blake3(bytes)
+                       upsert by content_hash (returns existing id or new)
+                       on new image: decode + thumbnail
+                       emit ItemAdded
+                       prune to max_history
+                          +-- emit ItemDeleted per pruned id
+                    })
+```
+
+### Content hash
+
+`blake3` for dedup. A unique index on `content_hash` makes the upsert
+atomic: copying the same content twice updates `created_at` instead of
+creating a duplicate row.
+
+### Wire format
+
+`SubmitItem` takes `ay` (D-Bus byte array) directly. No base64 encoding
+in JS, no decode step in Rust.
+
+### Mime allowlist
+
+`Meta.Selection.transfer_async` reads the full clipboard payload into GJS
+memory before any size check is possible, so the only safe defence
+against a hostile or buggy app putting a 1 GB blob on the clipboard is to
+refuse mime types we don't recognise. The list lives in
+`extension.js::_pickMime` and `daemon::main::pick_mime` and covers the
+common text and image types. Password-manager hint mimes
+(`x-kde-passwordManagerHint`) are skipped on both paths.
+
+## Storage
+
+### Schema
+
+```sql
+CREATE TABLE clipboard_history (
+    id              TEXT PRIMARY KEY,    -- UUID v4
+    mime_type       TEXT NOT NULL,
+    content_text    TEXT,                -- one of these two is populated
+    content_blob    BLOB,                -- (text vs binary)
+    thumbnail_blob  BLOB,                -- pre-decoded PNG, ~256 px
+    content_hash    TEXT NOT NULL,       -- blake3 of raw bytes
+    source_app      TEXT,
+    created_at      INTEGER NOT NULL
+);
+CREATE INDEX        idx_created_at ON clipboard_history (created_at DESC);
+CREATE UNIQUE INDEX idx_hash       ON clipboard_history (content_hash);
+
+CREATE VIRTUAL TABLE clipboard_fts USING fts5(
+    content_text,
+    content='clipboard_history',
+    content_rowid='rowid',
+    tokenize='unicode61 remove_diacritics 2'
+);
+-- plus AI / AD / AU triggers keeping FTS in sync with the base table.
+```
+
+### PRAGMAs
+
+```
+journal_mode = WAL        -- readers don't block the writer
+synchronous  = NORMAL     -- fsync on commit, not on every write
+foreign_keys = ON
+```
+
+### FTS5 search
+
+Full-text index over `content_text` only. Images and other binaries are
+not indexed; an empty search shows everything, a non-empty search shows
+only matching text items.
+
+`tokenize='unicode61 remove_diacritics 2'` gives O(log n) prefix search
+and matches across diacritics (searching `cafe` finds `café`).
+
+The FTS5 table uses `content='clipboard_history'` (external content), so
+text is stored once in the base table and FTS5 holds only the inverted
+index.
+
+### FTS5 query construction
+
+User input is split into whitespace tokens. Each token has embedded `"`
+doubled (FTS5 escape) and is wrapped in `"..."` with a `*` prefix
+suffix:
+
+```
+input:  cafe hello
+tokens: ["cafe", "hello"]
+FTS5:   "cafe"* "hello"*
+```
+
+The constructed string is bound as a parameter value (`?N`), not
+interpolated into SQL. A malformed FTS5 escape can only affect the
+search query, not the SQL parser.
+
+### Pruning
+
+`upsert_item` checks `COUNT(*) > max_history` after each insert and
+deletes the oldest excess rows by `created_at ASC`, returning their ids.
+The D-Bus layer emits `ItemDeleted` for each so the extension can unlink
+the matching `~/.cache/strata/thumbnails/<id>.png`.
+
+## Concurrency
+
+The Rust daemon runs `tokio::main(flavor = "multi_thread")`. zbus
+dispatches each incoming method call on the executor. rusqlite is sync,
+so every DB call is wrapped:
+
+```rust
+let conn = self.conn.clone();
+tokio::task::spawn_blocking(move || {
+    let guard = conn.lock();   // poison-recovering wrapper
+    db::upsert_item(&guard, ...)
+}).await?
+```
+
+The D-Bus reactor stays responsive while disk I/O runs on the blocking
+pool. One mutex serialises writers (SQLite is single-writer in WAL). The
+lock wrapper takes the inner value even if a previous holder panicked,
+so a single bad task can't poison the global state.
+
+## Memory bounds
+
+- Mime allowlist gates which payloads are even read.
+- Text and image size caps are user-configurable (defaults 1 MB and 5 MB).
+  Payloads larger than the configured cap are rejected at `submit_item`
+  before storage. The extension reads the caps from GSettings and pushes
+  them to the daemon via `SetConfig`, so changes apply at runtime.
+- Thumbnails are decoded once at ingest, stored as PNG. The UI fetches
+  them lazily via `GetThumbnail(id) -> ay` only for visible rows.
+- History pagination uses the configurable `page-size` setting (default
+  50). The panel loads one page on open and one more each time the
+  scroll reaches the bottom. The full table never sits in JS memory.
+
+## Lazy loading
+
+Two independent lazy layers keep the panel responsive regardless of
+history size.
+
+### Paginated history
+
+`GetHistory(offset, limit)` returns metadata only (id, mime, short text
+preview, timestamp). The panel loads `page-size` rows on open, then
+another page each time the scroll position passes ~80 % of the viewport.
+The Rust side serves these from the `idx_created_at DESC` index with
+`LIMIT/OFFSET`, which stays O(log n) for any history size.
+
+Search shortcuts this path: when the search box is non-empty the panel
+calls `SearchHistory(query, limit)` instead and disables scroll-driven
+appends, so an in-progress search and a scroll event cannot race.
+
+### On-demand thumbnails
+
+`GetHistory` does not return image bytes. For each image row,
+`ui/clipboardItem.js` builds the row with a placeholder icon and then:
+
+1. Checks `~/.cache/strata/thumbnails/<id>.png`. If present, loads from
+   disk via `St.Icon` with a `file://` URI.
+2. Otherwise calls `GetThumbnail(id)`, which returns the
+   pre-decoded PNG bytes the daemon stored in `thumbnail_blob` at
+   ingest time. The bytes are written to the cache file, then loaded.
+3. On `ItemDeleted` (including prune-driven deletes), the cache file is
+   unlinked.
+
+Effect: scrolling past 1000 image rows costs zero D-Bus traffic for the
+rows above and below the viewport. Each thumbnail is fetched at most
+once per process lifetime; reopens after the first fetch read the PNG
+straight from the page cache.
+
+The daemon does the expensive part (image decode + resize) exactly once,
+at ingest, on the blocking pool. The UI never decodes a full-resolution
+image.
+
+## UI invariants
+
+- `St.Label({ text: ... })` only. No `set_markup`, so clipboard content
+  can never inject Pango markup.
+- List updates are batched via `GLib.idle_add` in chunks of 20.
+- Search has a 150 ms debounce and an epoch counter; stale responses
+  that arrive after a newer query are dropped.
+- Paste-back uses `St.Clipboard.set_text` for text or
+  `Meta.SelectionSourceMemory.new` + `set_owner` for binary. No code
+  path in Strata executes clipboard content (no `spawn`, no
+  `launch_uri`, no `show_uri`).
+
+## Wayland clipboard monitor
+
+The daemon contains a `wl-clipboard-rs` monitor for `ext-data-control-v1`
+and `zwlr-data-control-v1`. GNOME's Mutter does not expose either, so on
+GNOME the monitor logs INFO and all ingest comes from GJS via
+`Meta.Selection` + `SubmitItem`.
+
+The monitor is kept because it makes the daemon usable standalone on
+wlroots-based compositors (Sway, Hyprland) with a non-GNOME front-end,
+and it is small and isolated.
+
+## Security boundary
+
+| Boundary | Threat | Mitigation |
+|---|---|---|
+| App to clipboard | Huge blob OOMs Shell | Mime allowlist, size caps |
+| App to history | Password leak | `x-kde-passwordManagerHint` opt-out |
+| User to search | SQL injection | rusqlite `params![]`, FTS5 input bound as value |
+| Daemon to FS | Path traversal via id | Ids are server-generated UUID v4 |
+| Daemon to extension | Signal spoofing | D-Bus enforces single owner of `org.gnome.Strata` |
+| Stored item to paste | Command execution | No spawn, no launch_uri, no markup parsing |
+
+## Non-GNOME front-end
+
+The daemon's D-Bus interface is the contract:
+
+1. Spawn `strata-daemon`.
+2. Subscribe to `ItemAdded`, `ItemDeleted`, `HistoryCleared`.
+3. Call `GetHistory`, `SearchHistory`, `SetClipboard`, etc.
+4. On wlroots compositors either let the built-in `wl-clipboard-rs`
+   monitor handle ingest, or read the clipboard yourself and call
+   `SubmitItem(mime, bytes)`.
+
+See `busctl` examples in [`strata-daemon/README.md`](strata-daemon/README.md).
diff --git a/CHANGELOG.md b/CHANGELOG.md
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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
+
+---
+
+## [0.2.0] - 2026-05-25
+
+### Fixed
+
+- **MIME priority: plain text now preferred over rich text.**
+  When an application (code editors, web browsers, etc.) advertises both a
+  plain-text and a rich-text (`text/html`, `text/rtf`) variant on the clipboard,
+  Strata now captures the plain-text variant. Previously, `text/html` ranked
+  above `text/plain`, causing syntax-highlighted HTML markup to be stored
+  instead of the actual source text when copying from code editors.
+  Rich-text types are still captured when no plain-text alternative is offered.
+  Fix applied to both the Rust daemon (`pick_mime`) and the GNOME Shell
+  extension (`_pickMime`) to keep them in sync.
+
+---
+
+## [0.1.0] - 2026-05-24
+
+### Added
+
+- Initial release.
+- Rust daemon (`strata-daemon`) with SQLite/FTS5 storage, Wayland clipboard
+  monitor, D-Bus interface (`org.gnome.Strata`), and image thumbnail support.
+- GNOME Shell extension (`strata@edu4rdshl.dev`) with popup panel, lazy-loaded
+  pagination, full-text search, image thumbnails, and paste-back.
+- Preferences window (Adwaita) for history size, size limits, keyboard
+  shortcut, panel position/width, and excluded-app list.
+- Daemon lifecycle management: extension detects an existing systemd-managed
+  daemon and falls back to spawning from `PATH`; shows a desktop notification
+  when the binary is not found.
+- `contrib/systemd/strata-daemon.service` for distribution packaging.
+- `Makefile` with `install-daemon`, `install`, and `pack` targets.
diff --git a/Makefile b/Makefile
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+++ b/Makefile
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+EXTENSION_UUID  = strata@edu4rdshl.dev
+DAEMON_RELEASE  = strata-daemon/target/release/strata-daemon
+SCHEMA_DIR      = $(EXTENSION_UUID)/schemas
+INSTALL_DIR     = $(HOME)/.local/share/gnome-shell/extensions/$(EXTENSION_UUID)
+DAEMON_INSTALL  = $(HOME)/.local/bin
+
+.PHONY: all daemon schemas install install-daemon pack clean
+
+all: daemon schemas
+
+daemon:
+	cargo build --release --manifest-path=strata-daemon/Cargo.toml
+
+schemas:
+	glib-compile-schemas $(SCHEMA_DIR)
+
+# Install the daemon binary to ~/.local/bin (must be in PATH).
+install-daemon: daemon
+	mkdir -p $(DAEMON_INSTALL)
+	cp $(DAEMON_RELEASE) $(DAEMON_INSTALL)/strata-daemon
+	@echo "Installed daemon to $(DAEMON_INSTALL)/strata-daemon"
+	@echo "Make sure $(DAEMON_INSTALL) is in your PATH."
+
+# Install the GNOME Shell extension only (daemon must already be in PATH).
+install: schemas
+	mkdir -p $(INSTALL_DIR)/schemas $(INSTALL_DIR)/ui
+	cp $(EXTENSION_UUID)/schemas/*.gschema.xml $(INSTALL_DIR)/schemas/
+	cp $(SCHEMA_DIR)/gschemas.compiled $(INSTALL_DIR)/schemas/
+	cp $(EXTENSION_UUID)/*.js $(INSTALL_DIR)/
+	cp $(EXTENSION_UUID)/*.css $(INSTALL_DIR)/
+	cp $(EXTENSION_UUID)/metadata.json $(INSTALL_DIR)/
+	cp $(EXTENSION_UUID)/ui/*.js $(INSTALL_DIR)/ui/
+	@echo "Installed to $(INSTALL_DIR)"
+	@echo "Run: gnome-extensions enable $(EXTENSION_UUID)"
+
+# Pack the extension (JS only - no binary).
+pack: schemas
+	gnome-extensions pack $(EXTENSION_UUID) \
+		--extra-source=ui \
+		--force
+	@echo "Packed: $(EXTENSION_UUID).shell-extension.zip"
+
+clean:
+	cargo clean --manifest-path=strata-daemon/Cargo.toml
+	rm -f $(SCHEMA_DIR)/gschemas.compiled
+	rm -f $(EXTENSION_UUID).shell-extension.zip
diff --git a/README.md b/README.md
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+++ b/README.md
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+# Strata
+
+A fast, stutter-free clipboard manager for GNOME Shell.
+
+All heavy work (hashing, decoding, storage, search, thumbnails) lives in a Rust
+daemon. The GNOME Shell extension only renders UI and forwards events over
+D-Bus, so the compositor is never blocked, even with thousands of items.
+
+## Architecture
+
+Strata is **two components**, and you need **both** for it to work:
+
+| Component | Language | Role |
+|---|---|---|
+| [`strata-daemon/`](strata-daemon/) | Rust + tokio + zbus | Storage (SQLite + FTS5), dedup, thumbnails, D-Bus service `org.gnome.Strata` |
+| [`strata@edu4rdshl.dev/`](strata@edu4rdshl.dev/) | GJS (GNOME Shell extension) | Top-bar panel, search UI, paste-back, clipboard ingest |
+
+The extension auto-connects to the daemon on enable. If the daemon is managed
+by systemd (or another init system), the extension detects it and skips
+spawning its own copy. If no daemon is running, the extension looks for
+`strata-daemon` in `$PATH` and spawns it directly.
+
+```
+GNOME Shell (GJS)  ──D-Bus──▶  strata-daemon  ──▶  SQLite (~/.local/share/strata)
+                                       │
+                                       └──▶  thumbnails (~/.cache/strata)
+```
+
+## Requirements
+
+- GNOME Shell 50 (tested). May work on 45–49 but untested — if you try it and it works, please open an issue to let us know.
+- `strata-daemon` binary in `$PATH` (see Install below)
+- Rust 1.74+ (build only)
+- `glib-compile-schemas` (from `glib2-devel` / `libglib2.0-dev-bin`)
+- SQLite is bundled via `rusqlite`, no system dep needed
+
+## Install
+
+### From source (local build)
+
+```sh
+git clone https://github.com/Edu4rdSHL/Strata.git
+cd Strata
+
+# Build and install the daemon binary to ~/.local/bin
+make install-daemon
+
+# Install the GNOME Shell extension
+make install
+```
+
+Make sure `~/.local/bin` is in your `$PATH`, then log out / log back in
+(Wayland) or `Alt+F2` → `r` (X11) and enable:
+
+```sh
+gnome-extensions enable strata@edu4rdshl.dev
+```
+
+### Via systemd user service (distro packages / manual)
+
+Distro packages install the daemon binary to `/usr/bin/strata-daemon` and
+the systemd unit from `contrib/systemd/strata-daemon.service` to
+`/usr/lib/systemd/user/`. Enable it once:
+
+```sh
+systemctl --user enable --now strata-daemon
+```
+
+Then install and enable the extension as above. The extension detects the
+running daemon and will not spawn a second copy.
+
+### Pack for extensions.gnome.org
+
+```sh
+make pack          # produces strata@edu4rdshl.dev.shell-extension.zip (JS only)
+```
+
+## Uninstall
+
+```sh
+gnome-extensions disable strata@edu4rdshl.dev
+rm -rf ~/.local/share/gnome-shell/extensions/strata@edu4rdshl.dev
+rm -rf ~/.local/share/strata ~/.cache/strata    # also wipes history
+```
+
+## Other desktops?
+
+The daemon is desktop-agnostic. It speaks plain D-Bus and runs anywhere
+the session bus does. Any client (KDE applet, CLI tool, your own script)
+can drive it. See [`strata-daemon/README.md`](strata-daemon/README.md) for
+the wire protocol and a `busctl` example.
+
+The shipped UI is a GNOME Shell extension. Ports to other desktops only
+need a new front-end against the same D-Bus interface.
+
+## Deeper reading
+
+- [`ARCHITECTURE.md`](ARCHITECTURE.md): design goals, process model,
+  storage schema, FTS5 details, concurrency, security boundary.
+- [`strata-daemon/README.md`](strata-daemon/README.md): D-Bus interface
+  reference and standalone usage.
+- [`strata@edu4rdshl.dev/README.md`](strata@edu4rdshl.dev/README.md):
+  extension internals.
+
+## AI Policy Disclosure
+
+Parts of this codebase and documentation were written with the assistance of AI tools. This is the policy we follow and will continue to follow: every line of code and every document produced with AI assistance is rigorously reviewed by a human before being published. No AI-generated output is committed without understanding, verification, and approval by the project author.
+
+## License
+
+GPL-3.0-or-later.
diff --git a/contrib/systemd/strata-daemon.service b/contrib/systemd/strata-daemon.service
new file mode 100644
index 0000000..423e400
--- /dev/null
+++ b/contrib/systemd/strata-daemon.service
@@ -0,0 +1,14 @@
+[Unit]
+Description=Strata clipboard manager daemon
+Documentation=https://github.com/Edu4rdSHL/Strata
+# Start after the D-Bus session bus and the graphical session are available.
+After=graphical-session.target
+PartOf=graphical-session.target
+
+[Service]
+ExecStart=/usr/bin/strata-daemon
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=graphical-session.target
diff --git a/strata-daemon/Cargo.lock b/strata-daemon/Cargo.lock
new file mode 100644
index 0000000..9464eb4
--- /dev/null
+++ b/strata-daemon/Cargo.lock
@@ -0,0 +1,2170 @@
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diff --git a/strata-daemon/Cargo.toml b/strata-daemon/Cargo.toml
new file mode 100644
index 0000000..8786467
--- /dev/null
+++ b/strata-daemon/Cargo.toml
@@ -0,0 +1,54 @@
+[package]
+name        = "strata-daemon"
+version     = "0.2.0"
+edition     = "2021"
+description = "Strata clipboard manager backend daemon"
+
+[[bin]]
+name = "strata-daemon"
+path = "src/main.rs"
+
+[dependencies]
+# Async runtime
+tokio              = { version = "1",    features = ["full"] }
+
+# D-Bus (async, tokio-native)
+zbus               = { version = "4",    features = ["tokio"] }
+
+# Wayland clipboard monitoring (custom event loop)
+wayland-client     = "0.31"
+wayland-protocols  = { version = "0.32", features = ["client", "staging"] }
+wayland-protocols-wlr = { version = "0.3", features = ["client"] }
+
+# Clipboard read / write (paste::get_contents + copy::copy_multi)
+# Supports ext-data-control-v1 (GNOME 47+) and zwlr-data-control-v1 fallback
+wl-clipboard-rs    = "0.9"
+
+# Storage
+rusqlite           = { version = "0.31", features = ["bundled"] }
+serde              = { version = "1",    features = ["derive"] }
+serde_json         = "1"
+uuid               = { version = "1",    features = ["v4"] }
+
+# Image thumbnail generation (runs in spawn_blocking — never blocks async runtime)
+image              = { version = "0.25", default-features = false, features = ["png", "jpeg"] }
+base64             = { version = "0.22", features = ["std"] }
+
+# Fast content hashing for deduplication
+blake3             = "1"
+
+# Logging
+tracing            = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter", "fmt"] }
+
+# XDG paths
+dirs               = "5"
+
+# Error handling
+anyhow             = "1"
+
+[profile.release]
+opt-level = 3
+lto       = true
+codegen-units = 1
+strip     = true
diff --git a/strata-daemon/README.md b/strata-daemon/README.md
new file mode 100644
index 0000000..0520de0
--- /dev/null
+++ b/strata-daemon/README.md
@@ -0,0 +1,101 @@
+# strata-daemon
+
+The Rust backend for [Strata](../README.md). Speaks D-Bus, stores history in
+SQLite, generates image thumbnails, and indexes text for full-text search.
+
+It is **not GNOME-specific**. Any D-Bus client can use it.
+
+## Build
+
+```sh
+cargo build --release
+# binary at target/release/strata-daemon
+```
+
+The GNOME extension spawns this binary automatically; you only need to run it
+manually if you're using a non-GNOME front-end.
+
+## Storage
+
+| Path | Contents |
+|---|---|
+| `~/.local/share/strata/clipboard.db` | History DB (WAL mode, FTS5 index) |
+| `~/.cache/strata/thumbnails/<id>.png` | Per-item image thumbnails |
+
+## D-Bus interface
+
+- **Bus name:** `org.gnome.Strata`
+- **Object path:** `/org/gnome/Strata`
+- **Interface:** `org.gnome.Strata.Manager`
+
+| Member | Signature | Notes |
+|---|---|---|
+| `SubmitItem` (method) | `(s ay) → ()` | Ingest a clipboard payload (mime, raw bytes) |
+| `GetHistory` (method) | `(u u) → s` | `(offset, limit)` → JSON array |
+| `SearchHistory` (method) | `(s u) → s` | FTS5 query → JSON array |
+| `GetThumbnail` (method) | `s → ay` | PNG bytes for item id |
+| `GetItemContent` (method) | `s → (ss)` | `(mime, base64)` for paste-back |
+| `SetClipboard` (method) | `s → ()` | Re-copy a stored item |
+| `DeleteItem` (method) | `s → ()` | |
+| `ClearHistory` (method) | `() → ()` | |
+| `Shutdown` (method) | `() → ()` | Graceful exit |
+| `SetConfig` (method) | `(uuu) → ()` | `(max_history, max_text_bytes, max_image_bytes)`; 0 means leave unchanged |
+| `ItemAdded` (signal) | `(sss)` | `(id, mime, preview)` |
+| `ItemDeleted` (signal) | `s` | |
+| `HistoryCleared` (signal) | `()` | |
+
+### Example: drive it from the shell
+
+```sh
+# Start the daemon (foreground)
+./target/release/strata-daemon
+
+# In another terminal:
+busctl --user call org.gnome.Strata /org/gnome/Strata \
+       org.gnome.Strata.Manager GetHistory uu 0 10
+
+# Submit text:
+busctl --user call org.gnome.Strata /org/gnome/Strata \
+       org.gnome.Strata.Manager SubmitItem say "text/plain;charset=utf-8" 5 104 101 108 108 111
+
+# Listen for new items:
+busctl --user monitor org.gnome.Strata
+```
+
+## Supported clipboard payloads
+
+Strict mime allowlist. Per-type size caps default to 1 MB for text and
+5 MB for images; both are runtime-configurable via the `SetConfig`
+D-Bus method (the GNOME extension wires this to its GSettings).
+
+- Text: `text/plain*`, `UTF8_STRING`, `STRING`, `TEXT`, `text/rtf`,
+  `text/markdown`, `text/html`, `text/uri-list`, `x-special/nautilus-clipboard`,
+  `application/x-kde-cutselection`, `application/rtf`
+- Images: `image/png`, `image/jpeg`, `image/jpg`, `image/gif`, `image/webp`,
+  `image/bmp`, `image/tiff`, `image/avif`, `image/x-icon`, `image/svg+xml`
+
+Items carrying `x-kde-passwordManagerHint` are silently dropped
+(KeePassXC / Bitwarden convention).
+
+## Module map
+
+```
+src/
+├── main.rs          Entry point, clipboard ingest, mime allowlist
+├── config.rs        Config loading + size caps
+├── db.rs            SQLite schema, FTS5, parameterised queries
+├── dbus_service.rs  zbus interface implementation
+└── clipboard/
+    ├── monitor.rs   Optional wl-clipboard-rs monitor (unused on GNOME)
+    └── writer.rs    Paste-back helpers
+```
+
+## Tests
+
+```sh
+cargo test --release
+```
+
+## License
+
+GPL-3.0-or-later.
diff --git a/strata-daemon/src/clipboard/mod.rs b/strata-daemon/src/clipboard/mod.rs
new file mode 100644
index 0000000..d3f3348
--- /dev/null
+++ b/strata-daemon/src/clipboard/mod.rs
@@ -0,0 +1,2 @@
+pub mod monitor;
+pub mod writer;
diff --git a/strata-daemon/src/clipboard/monitor.rs b/strata-daemon/src/clipboard/monitor.rs
new file mode 100644
index 0000000..4d9f72e
--- /dev/null
+++ b/strata-daemon/src/clipboard/monitor.rs
@@ -0,0 +1,315 @@
+/// Wayland clipboard monitor using the ext-data-control-v1 protocol (GNOME 47+)
+/// with a zwlr-data-control-v1 fallback for wlroots-based compositors.
+///
+/// Runs on a dedicated OS thread (NOT on the tokio runtime) to avoid blocking
+/// the async executor. Communicates clipboard change events to the tokio world
+/// via an `mpsc::UnboundedSender`.
+///
+/// Protocol reference: staging/ext-data-control/ext-data-control-v1.xml
+use std::collections::HashMap;
+
+use anyhow::{bail, Result};
+use tokio::sync::mpsc::UnboundedSender;
+use wayland_client::{
+    backend::ObjectId,
+    globals::{registry_queue_init, GlobalListContents},
+    protocol::{wl_registry, wl_seat},
+    Connection, Dispatch, Proxy, QueueHandle,
+};
+use wayland_protocols::ext::data_control::v1::client::{
+    ext_data_control_device_v1::{self, ExtDataControlDeviceV1},
+    ext_data_control_manager_v1::{self, ExtDataControlManagerV1},
+    ext_data_control_offer_v1::{self, ExtDataControlOfferV1},
+};
+use wayland_protocols_wlr::data_control::v1::client::{
+    zwlr_data_control_device_v1::{self, ZwlrDataControlDeviceV1},
+    zwlr_data_control_manager_v1::{self, ZwlrDataControlManagerV1},
+    zwlr_data_control_offer_v1::{self, ZwlrDataControlOfferV1},
+};
+
+/// A clipboard change notification: the compositor has set a new selection.
+/// `mime_types` lists all MIME types the new selection provides.
+#[derive(Debug)]
+pub struct ClipboardChange {
+    pub mime_types: Vec<String>,
+}
+
+// ---------------------------------------------------------------------------
+// State
+// ---------------------------------------------------------------------------
+
+struct MonitorState {
+    /// Pending offers keyed by Wayland object ID.
+    /// Each entry holds the offered MIME types as they arrive.
+    offers: HashMap<ObjectId, Vec<String>>,
+    tx: UnboundedSender<ClipboardChange>,
+}
+
+impl MonitorState {
+    fn new(tx: UnboundedSender<ClipboardChange>) -> Self {
+        Self {
+            offers: HashMap::new(),
+            tx,
+        }
+    }
+
+    fn record_offer_mime(&mut self, id: ObjectId, mime: String) {
+        self.offers.entry(id).or_default().push(mime);
+    }
+
+    fn commit_selection(&mut self, offer_id: ObjectId) {
+        // Take the mime list for this offer (and discard stale in-flight offers).
+        let mimes = self.offers.remove(&offer_id).unwrap_or_default();
+        self.offers.clear(); // discard any superseded offers
+        if !mimes.is_empty() {
+            let _ = self.tx.send(ClipboardChange { mime_types: mimes });
+        }
+    }
+}
+
+// ---------------------------------------------------------------------------
+// WlRegistry - required by registry_queue_init
+// ---------------------------------------------------------------------------
+
+impl Dispatch<wl_registry::WlRegistry, GlobalListContents> for MonitorState {
+    fn event(
+        _state: &mut Self,
+        _proxy: &wl_registry::WlRegistry,
+        _event: wl_registry::Event,
+        _data: &GlobalListContents,
+        _conn: &Connection,
+        _qh: &QueueHandle<Self>,
+    ) {
+        // Handled by GlobalList inside registry_queue_init.
+    }
+}
+
+// ---------------------------------------------------------------------------
+// ext-data-control-v1
+// ---------------------------------------------------------------------------
+
+impl Dispatch<ExtDataControlManagerV1, ()> for MonitorState {
+    fn event(
+        _: &mut Self,
+        _: &ExtDataControlManagerV1,
+        _: ext_data_control_manager_v1::Event, // manager has no events - unreachable
+        _: &(),
+        _: &Connection,
+        _: &QueueHandle<Self>,
+    ) {
+    }
+}
+
+impl Dispatch<ExtDataControlDeviceV1, ()> for MonitorState {
+    fn event(
+        state: &mut Self,
+        _device: &ExtDataControlDeviceV1,
+        event: ext_data_control_device_v1::Event,
+        _: &(),
+        _: &Connection,
+        _: &QueueHandle<Self>,
+    ) {
+        match event {
+            ext_data_control_device_v1::Event::DataOffer { id } => {
+                // Register the new offer object so subsequent Offer events can
+                // find it.
+                state.offers.insert(id.id(), Vec::new());
+            }
+            ext_data_control_device_v1::Event::Selection { id: Some(offer) } => {
+                let oid = offer.id();
+                state.commit_selection(oid);
+                // Politely destroy the offer - the compositor will clean up
+                // the Wayland object.
+                offer.destroy();
+            }
+            ext_data_control_device_v1::Event::Selection { id: None } => {
+                // null id means "clipboard cleared" - ignore.
+            }
+            ext_data_control_device_v1::Event::Finished => {
+                tracing::warn!("ext-data-control device finished (compositor revoked access)");
+            }
+            _ => {}
+        }
+    }
+}
+
+impl Dispatch<ExtDataControlOfferV1, ()> for MonitorState {
+    fn event(
+        state: &mut Self,
+        proxy: &ExtDataControlOfferV1,
+        event: ext_data_control_offer_v1::Event,
+        _: &(),
+        _: &Connection,
+        _: &QueueHandle<Self>,
+    ) {
+        if let ext_data_control_offer_v1::Event::Offer { mime_type } = event {
+            state.record_offer_mime(proxy.id(), mime_type);
+        }
+    }
+}
+
+// ---------------------------------------------------------------------------
+// zwlr-data-control-v1  (fallback for wlroots compositors)
+// ---------------------------------------------------------------------------
+
+impl Dispatch<ZwlrDataControlManagerV1, ()> for MonitorState {
+    fn event(
+        _: &mut Self,
+        _: &ZwlrDataControlManagerV1,
+        _: zwlr_data_control_manager_v1::Event, // manager has no events - unreachable
+        _: &(),
+        _: &Connection,
+        _: &QueueHandle<Self>,
+    ) {
+    }
+}
+
+impl Dispatch<ZwlrDataControlDeviceV1, ()> for MonitorState {
+    fn event(
+        state: &mut Self,
+        _device: &ZwlrDataControlDeviceV1,
+        event: zwlr_data_control_device_v1::Event,
+        _: &(),
+        _: &Connection,
+        _: &QueueHandle<Self>,
+    ) {
+        match event {
+            zwlr_data_control_device_v1::Event::DataOffer { id } => {
+                state.offers.insert(id.id(), Vec::new());
+            }
+            zwlr_data_control_device_v1::Event::Selection { id: Some(offer) } => {
+                let oid = offer.id();
+                state.commit_selection(oid);
+                offer.destroy();
+            }
+            zwlr_data_control_device_v1::Event::Selection { id: None } => {}
+
+            zwlr_data_control_device_v1::Event::Finished => {
+                tracing::warn!("zwlr-data-control device finished");
+            }
+            _ => {}
+        }
+    }
+}
+
+impl Dispatch<ZwlrDataControlOfferV1, ()> for MonitorState {
+    fn event(
+        state: &mut Self,
+        proxy: &ZwlrDataControlOfferV1,
+        event: zwlr_data_control_offer_v1::Event,
+        _: &(),
+        _: &Connection,
+        _: &QueueHandle<Self>,
+    ) {
+        if let zwlr_data_control_offer_v1::Event::Offer { mime_type } = event {
+            state.record_offer_mime(proxy.id(), mime_type);
+        }
+    }
+}
+
+// wl_seat - needed for binding, no events we care about.
+wayland_client::delegate_noop!(MonitorState: ignore wl_seat::WlSeat);
+
+// ---------------------------------------------------------------------------
+// Public entry point
+// ---------------------------------------------------------------------------
+
+/// Spawn the clipboard monitor on a dedicated OS thread.
+/// Returns immediately; the thread sends `ClipboardChange` events via `tx`.
+pub fn spawn(tx: UnboundedSender<ClipboardChange>) -> Result<()> {
+    let conn = Connection::connect_to_env()
+        .map_err(|e| anyhow::anyhow!("Could not connect to Wayland display: {e}"))?;
+
+    // Probe available protocols with a throwaway state.
+    let protocol = probe_protocol(&conn)?;
+    tracing::info!("Clipboard monitor using protocol: {:?}", protocol);
+
+    std::thread::Builder::new()
+        .name("strata-wl-monitor".into())
+        .spawn(move || {
+            if let Err(e) = run_loop(conn, protocol, tx) {
+                tracing::error!("Clipboard monitor exited with error: {e:#}");
+            }
+        })?;
+
+    Ok(())
+}
+
+#[derive(Debug, Clone, Copy)]
+enum Protocol {
+    Ext,
+    Wlr,
+}
+
+fn probe_protocol(conn: &Connection) -> Result<Protocol> {
+    // A quick roundtrip to get the global list; no persistent state needed here.
+    let (globals, _) = registry_queue_init::<MonitorState>(conn)?;
+
+    // ext-data-control-v1 preferred (GNOME 47+, KDE Plasma 6)
+    if globals.contents().with_list(|list| {
+        list.iter()
+            .any(|g| g.interface == "ext_data_control_manager_v1")
+    }) {
+        return Ok(Protocol::Ext);
+    }
+
+    // zwlr-data-control-v1 fallback (wlroots: Sway, Hyprland, etc.)
+    if globals.contents().with_list(|list| {
+        list.iter()
+            .any(|g| g.interface == "zwlr_data_control_manager_v1")
+    }) {
+        return Ok(Protocol::Wlr);
+    }
+
+    bail!(
+        "No supported clipboard control protocol found.\n\
+         - GNOME: requires GNOME 47+ (Mutter implements ext-data-control-v1)\n\
+         - wlroots: requires zwlr-data-control-v1 (Sway, Hyprland, etc.)"
+    );
+}
+
+fn run_loop(
+    conn: Connection,
+    protocol: Protocol,
+    tx: UnboundedSender<ClipboardChange>,
+) -> Result<()> {
+    let (globals, mut queue) = registry_queue_init::<MonitorState>(&conn)?;
+    let qh = queue.handle();
+    let mut state = MonitorState::new(tx);
+
+    // First roundtrip to populate globals.
+    queue.roundtrip(&mut state)?;
+
+    let seat: wl_seat::WlSeat = globals.bind(&qh, 1..=8, ())?;
+
+    match protocol {
+        Protocol::Ext => {
+            let manager: ExtDataControlManagerV1 = globals
+                .bind(&qh, 1..=1, ())
+                .map_err(|e| anyhow::anyhow!("Could not bind ext_data_control_manager_v1: {e}"))?;
+            let _device = manager.get_data_device(&seat, &qh, ());
+            // Roundtrip to ensure the device creation is acknowledged and the
+            // initial selection offer (if any) is delivered.
+            queue.roundtrip(&mut state)?;
+        }
+        Protocol::Wlr => {
+            let manager: ZwlrDataControlManagerV1 = globals
+                .bind(&qh, 2..=2, ())
+                .map_err(|e| anyhow::anyhow!("Could not bind zwlr_data_control_manager_v1: {e}"))?;
+            let _device = manager.get_data_device(&seat, &qh, ());
+            queue.roundtrip(&mut state)?;
+        }
+    }
+
+    tracing::info!("Clipboard monitor event loop running");
+
+    // Main event loop: blocks until an event is available, then dispatches it.
+    loop {
+        if let Err(e) = queue.blocking_dispatch(&mut state) {
+            tracing::error!("Wayland dispatch error: {e}");
+            break;
+        }
+    }
+
+    Ok(())
+}
diff --git a/strata-daemon/src/clipboard/writer.rs b/strata-daemon/src/clipboard/writer.rs
new file mode 100644
index 0000000..0d99c32
--- /dev/null
+++ b/strata-daemon/src/clipboard/writer.rs
@@ -0,0 +1,42 @@
+/// Writes content back to the Wayland clipboard using wl-clipboard-rs.
+/// `copy_multi(foreground: false)` spawns a background OS thread that serves
+/// `wl_data_source.send` requests from other apps - the tokio runtime is
+/// never blocked.
+use anyhow::Result;
+use wl_clipboard_rs::copy::{MimeSource, MimeType, Options, Source};
+
+#[derive(Debug, Clone)]
+pub struct WriteRequest {
+    pub mime_type: String,
+    pub content: Vec<u8>,
+}
+
+pub fn write_to_clipboard(req: WriteRequest) -> Result<()> {
+    let mime = req.mime_type.clone();
+    let bytes = req.content.clone();
+
+    // For text, offer both the specific type and text/plain for compatibility.
+    let sources: Vec<MimeSource> = if mime.starts_with("text/") {
+        vec![
+            MimeSource {
+                source: Source::Bytes(bytes.clone().into()),
+                mime_type: MimeType::Specific(mime.clone()),
+            },
+            MimeSource {
+                source: Source::Bytes(bytes.clone().into()),
+                mime_type: MimeType::Specific("text/plain;charset=utf-8".into()),
+            },
+        ]
+    } else {
+        vec![MimeSource {
+            source: Source::Bytes(bytes.into()),
+            mime_type: MimeType::Specific(mime),
+        }]
+    };
+
+    let mut opts = Options::new();
+    opts.foreground(false);
+    opts.copy_multi(sources)?;
+
+    Ok(())
+}
diff --git a/strata-daemon/src/config.rs b/strata-daemon/src/config.rs
new file mode 100644
index 0000000..f18345c
--- /dev/null
+++ b/strata-daemon/src/config.rs
@@ -0,0 +1,23 @@
+use std::path::PathBuf;
+
+pub struct Config {
+    pub db_path: PathBuf,
+    pub max_history: usize,
+}
+
+impl Config {
+    pub fn new() -> Self {
+        let data_dir = dirs::data_dir()
+            .unwrap_or_else(|| PathBuf::from("."))
+            .join("strata");
+
+        if let Err(e) = std::fs::create_dir_all(&data_dir) {
+            tracing::warn!("Could not create data dir {:?}: {}", data_dir, e);
+        }
+
+        Self {
+            db_path: data_dir.join("clipboard.db"),
+            max_history: 200,
+        }
+    }
+}
diff --git a/strata-daemon/src/db.rs b/strata-daemon/src/db.rs
new file mode 100644
index 0000000..df72e1f
--- /dev/null
+++ b/strata-daemon/src/db.rs
@@ -0,0 +1,336 @@
+use anyhow::{Context, Result};
+use rusqlite::{params, Connection};
+use serde::{Deserialize, Serialize};
+use std::path::Path;
+use std::sync::{Mutex, MutexGuard};
+
+/// Metadata for a clipboard entry - does NOT include thumbnail bytes.
+/// Thumbnails are fetched separately via `get_thumbnail` for lazy loading.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ItemMeta {
+    pub id: String,
+    pub mime_type: String,
+    /// Non-null for text types (truncated preview for display).
+    pub content_text: Option<String>,
+    pub source_app: Option<String>,
+    pub created_at: i64,
+    /// True if this item has a stored thumbnail (clients should call get_thumbnail to fetch it).
+    pub has_thumbnail: bool,
+}
+
+/// A row as stored in SQLite (blob is raw bytes, not base64).
+#[allow(dead_code)]
+pub struct RawItem {
+    pub id: String,
+    pub mime_type: String,
+    pub content_text: Option<String>,
+    pub content_blob: Option<Vec<u8>>,
+    pub thumbnail_blob: Option<Vec<u8>>,
+    pub source_app: Option<String>,
+    pub created_at: i64,
+}
+
+pub struct Db {
+    conn: Mutex<Connection>,
+}
+
+/// Acquire the DB lock, transparently recovering from poison.
+///
+/// A mutex is "poisoned" when a thread panics while holding it. For our SQLite
+/// connection this is safe to recover from because rusqlite uses RAII statements
+/// and transactions - any in-flight statement or transaction has already been
+/// rolled back by the time the panic unwinds past it. Without this recovery,
+/// a single panic anywhere in the daemon would permanently break ALL future
+/// database access (every subsequent .lock().unwrap() would panic too).
+fn lock_conn(m: &Mutex<Connection>) -> MutexGuard<'_, Connection> {
+    match m.lock() {
+        Ok(g) => g,
+        Err(poisoned) => {
+            tracing::warn!("DB mutex was poisoned; recovering");
+            poisoned.into_inner()
+        }
+    }
+}
+
+impl Db {
+    pub fn open(path: &Path) -> Result<Self> {
+        let conn = Connection::open(path)
+            .with_context(|| format!("Opening SQLite database at {:?}", path))?;
+
+        // Performance pragmas: WAL mode for concurrent reads, synchronous=NORMAL is safe
+        // for a clipboard history (we can tolerate losing the last item on a crash).
+        conn.execute_batch(
+            "PRAGMA journal_mode = WAL;
+             PRAGMA synchronous   = NORMAL;
+             PRAGMA foreign_keys  = ON;",
+        )?;
+
+        conn.execute_batch(
+            "CREATE TABLE IF NOT EXISTS clipboard_history (
+                id            TEXT PRIMARY KEY,
+                mime_type     TEXT NOT NULL,
+                content_text  TEXT,
+                content_blob  BLOB,
+                thumbnail_blob BLOB,
+                content_hash  TEXT NOT NULL,
+                source_app    TEXT,
+                created_at    INTEGER NOT NULL
+            );
+            CREATE INDEX IF NOT EXISTS idx_created_at ON clipboard_history (created_at DESC);
+            CREATE UNIQUE INDEX IF NOT EXISTS idx_hash ON clipboard_history (content_hash);",
+        )?;
+
+        // Migration: add thumbnail_blob column to existing databases.
+        conn.execute_batch("ALTER TABLE clipboard_history ADD COLUMN thumbnail_blob BLOB;")
+            .ok(); // Silently ignore error if column already exists.
+
+        // FTS5 full-text search index over content_text only.
+        // Images and other non-text items are NOT indexed - search filters
+        // them out (an empty search shows everything; a non-empty search
+        // shows only matching text items).
+        //
+        // External-content table linked by rowid avoids duplicating the text.
+        // unicode61 with diacritic removal gives reasonable matching for
+        // European languages (e.g. searching "cafe" finds "café").
+        conn.execute_batch(
+            "CREATE VIRTUAL TABLE IF NOT EXISTS clipboard_fts USING fts5(
+                content_text,
+                content='clipboard_history',
+                content_rowid='rowid',
+                tokenize='unicode61 remove_diacritics 2'
+            );
+            CREATE TRIGGER IF NOT EXISTS clipboard_ai AFTER INSERT ON clipboard_history BEGIN
+                INSERT INTO clipboard_fts(rowid, content_text)
+                VALUES (new.rowid, new.content_text);
+            END;
+            CREATE TRIGGER IF NOT EXISTS clipboard_ad AFTER DELETE ON clipboard_history BEGIN
+                INSERT INTO clipboard_fts(clipboard_fts, rowid, content_text)
+                VALUES('delete', old.rowid, old.content_text);
+            END;
+            CREATE TRIGGER IF NOT EXISTS clipboard_au AFTER UPDATE ON clipboard_history BEGIN
+                INSERT INTO clipboard_fts(clipboard_fts, rowid, content_text)
+                VALUES('delete', old.rowid, old.content_text);
+                INSERT INTO clipboard_fts(rowid, content_text)
+                VALUES (new.rowid, new.content_text);
+            END;",
+        )?;
+
+        // Backfill FTS index from any pre-existing rows. Cheap no-op if already in sync.
+        let _ = conn.execute_batch("INSERT INTO clipboard_fts(clipboard_fts) VALUES('rebuild');");
+
+        Ok(Self {
+            conn: Mutex::new(conn),
+        })
+    }
+
+    /// Insert or promote (bump `created_at`) a duplicate item.
+    /// Returns `(id, is_new)`.
+    pub fn upsert_item(
+        &self,
+        mime_type: &str,
+        content_text: Option<&str>,
+        content_blob: Option<&[u8]>,
+        thumbnail_blob: Option<&[u8]>,
+        content_hash: &str,
+        source_app: Option<&str>,
+    ) -> Result<(String, bool)> {
+        let conn = lock_conn(&self.conn);
+        let now_ms = chrono_now_ms();
+
+        // Check for existing item with this hash.
+        let existing: Option<String> = conn
+            .query_row(
+                "SELECT id FROM clipboard_history WHERE content_hash = ?1",
+                params![content_hash],
+                |row| row.get(0),
+            )
+            .ok();
+
+        if let Some(id) = existing {
+            conn.execute(
+                "UPDATE clipboard_history SET created_at = ?1 WHERE id = ?2",
+                params![now_ms, id],
+            )?;
+            return Ok((id, false));
+        }
+
+        let id = uuid::Uuid::new_v4().to_string();
+        conn.execute(
+            "INSERT INTO clipboard_history
+               (id, mime_type, content_text, content_blob, thumbnail_blob, content_hash, source_app, created_at)
+             VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8)",
+            params![id, mime_type, content_text, content_blob, thumbnail_blob, content_hash, source_app, now_ms],
+        )?;
+        Ok((id, true))
+    }
+
+    /// Return a page of recent items as metadata (no thumbnail bytes).
+    /// `offset` is from the most recent item (0 = newest).
+    pub fn get_history_page(
+        &self,
+        offset: usize,
+        limit: usize,
+        max_history: usize,
+    ) -> Result<Vec<ItemMeta>> {
+        let conn = lock_conn(&self.conn);
+        let effective_limit = limit.min(max_history.saturating_sub(offset));
+        if effective_limit == 0 {
+            return Ok(Vec::new());
+        }
+
+        let mut stmt = conn.prepare(
+            "SELECT id, mime_type, content_text, source_app, created_at,
+                    thumbnail_blob IS NOT NULL AS has_thumb
+             FROM clipboard_history
+             ORDER BY created_at DESC
+             LIMIT ?1 OFFSET ?2",
+        )?;
+
+        let items = stmt
+            .query_map(params![effective_limit as i64, offset as i64], |row| {
+                Ok(ItemMeta {
+                    id: row.get(0)?,
+                    mime_type: row.get(1)?,
+                    content_text: row.get(2)?,
+                    source_app: row.get(3)?,
+                    created_at: row.get(4)?,
+                    has_thumbnail: row.get::<_, i64>(5)? != 0,
+                })
+            })?
+            .collect::<rusqlite::Result<Vec<_>>>()?;
+
+        Ok(items)
+    }
+
+    /// Full-text search over content_text. Only text items can match - images
+    /// and other non-text content are NOT indexed and never appear in results.
+    /// Empty query returns []; callers should use get_history_page for that.
+    pub fn search_history(&self, query: &str, limit: usize) -> Result<Vec<ItemMeta>> {
+        let conn = lock_conn(&self.conn);
+
+        // Build a safe FTS5 prefix query: each token quoted + '*' suffix for prefix match.
+        let tokens: Vec<String> = query
+            .split_whitespace()
+            .filter(|t| !t.is_empty())
+            .map(|t| {
+                // Escape embedded double-quotes by doubling them per FTS5 syntax.
+                let escaped = t.replace('"', "\"\"");
+                format!("\"{}\"*", escaped)
+            })
+            .collect();
+
+        if tokens.is_empty() {
+            return Ok(Vec::new());
+        }
+        let fts_query = tokens.join(" ");
+
+        let mut stmt = conn.prepare(
+            "SELECT h.id, h.mime_type, h.content_text, h.source_app, h.created_at,
+                    h.thumbnail_blob IS NOT NULL AS has_thumb
+             FROM clipboard_history h
+             WHERE h.rowid IN (SELECT rowid FROM clipboard_fts WHERE clipboard_fts MATCH ?1)
+             ORDER BY h.created_at DESC
+             LIMIT ?2",
+        )?;
+
+        let items = stmt
+            .query_map(params![fts_query, limit as i64], |row| {
+                Ok(ItemMeta {
+                    id: row.get(0)?,
+                    mime_type: row.get(1)?,
+                    content_text: row.get(2)?,
+                    source_app: row.get(3)?,
+                    created_at: row.get(4)?,
+                    has_thumbnail: row.get::<_, i64>(5)? != 0,
+                })
+            })?
+            .collect::<rusqlite::Result<Vec<_>>>()?;
+
+        Ok(items)
+    }
+
+    /// Fetch a single item's thumbnail bytes. Returns None if the item has no thumbnail
+    /// (text item, or doesn't exist).
+    pub fn get_thumbnail(&self, id: &str) -> Result<Option<Vec<u8>>> {
+        let conn = lock_conn(&self.conn);
+        let blob: Option<Option<Vec<u8>>> = conn
+            .query_row(
+                "SELECT thumbnail_blob FROM clipboard_history WHERE id = ?1",
+                params![id],
+                |row| row.get(0),
+            )
+            .ok();
+        Ok(blob.flatten())
+    }
+
+    /// Fetch raw item content for clipboard write-back.
+    pub fn get_raw_item(&self, id: &str) -> Result<Option<RawItem>> {
+        let conn = lock_conn(&self.conn);
+        let result = conn.query_row(
+            "SELECT id, mime_type, content_text, content_blob, thumbnail_blob, source_app, created_at
+             FROM clipboard_history WHERE id = ?1",
+            params![id],
+            |row| {
+                Ok(RawItem {
+                    id: row.get(0)?,
+                    mime_type: row.get(1)?,
+                    content_text: row.get(2)?,
+                    content_blob: row.get(3)?,
+                    thumbnail_blob: row.get(4)?,
+                    source_app: row.get(5)?,
+                    created_at: row.get(6)?,
+                })
+            },
+        ).ok();
+        Ok(result)
+    }
+
+    pub fn delete_item(&self, id: &str) -> Result<bool> {
+        let conn = lock_conn(&self.conn);
+        let n = conn.execute("DELETE FROM clipboard_history WHERE id = ?1", params![id])?;
+        Ok(n > 0)
+    }
+
+    pub fn clear_history(&self) -> Result<()> {
+        let conn = lock_conn(&self.conn);
+        conn.execute_batch("DELETE FROM clipboard_history;")?;
+        Ok(())
+    }
+
+    /// Prune history to `max_history` most recent items. Returns the IDs of
+    /// items that were deleted, so the caller can emit ItemDeleted signals
+    /// (lets clients clean up per-item caches like thumbnail files).
+    pub fn prune(&self, max_history: usize) -> Result<Vec<String>> {
+        let conn = lock_conn(&self.conn);
+        let count: i64 = conn.query_row("SELECT COUNT(*) FROM clipboard_history", [], |row| {
+            row.get(0)
+        })?;
+        if (count as usize) <= max_history {
+            return Ok(Vec::new());
+        }
+        let mut stmt = conn.prepare(
+            "SELECT id FROM clipboard_history
+             WHERE id NOT IN (
+                 SELECT id FROM clipboard_history ORDER BY created_at DESC LIMIT ?1
+             )",
+        )?;
+        let ids: Vec<String> = stmt
+            .query_map(params![max_history as i64], |row| row.get::<_, String>(0))?
+            .collect::<rusqlite::Result<Vec<_>>>()?;
+        conn.execute(
+            "DELETE FROM clipboard_history
+             WHERE id NOT IN (
+                 SELECT id FROM clipboard_history ORDER BY created_at DESC LIMIT ?1
+             )",
+            params![max_history as i64],
+        )?;
+        Ok(ids)
+    }
+}
+
+fn chrono_now_ms() -> i64 {
+    std::time::SystemTime::now()
+        .duration_since(std::time::UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_millis() as i64
+}
diff --git a/strata-daemon/src/dbus_service.rs b/strata-daemon/src/dbus_service.rs
new file mode 100644
index 0000000..cea4c11
--- /dev/null
+++ b/strata-daemon/src/dbus_service.rs
@@ -0,0 +1,272 @@
+use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::Arc;
+
+use base64::Engine as _;
+use zbus::{interface, object_server::SignalContext};
+
+use crate::db::{Db, RawItem};
+
+/// Maximum thumbnail dimension for images (px). Larger images are resized down.
+pub const THUMB_PX: u32 = 200;
+/// Default maximum raw image size to accept (bytes). Overridable via SetConfig.
+pub const DEFAULT_MAX_IMAGE_BYTES: usize = 5 * 1024 * 1024;
+/// Default maximum text size to accept. Overridable via SetConfig.
+pub const DEFAULT_MAX_TEXT_BYTES: usize = 1024 * 1024;
+/// Default maximum history item count. Overridable via SetConfig.
+pub const DEFAULT_MAX_HISTORY: usize = 200;
+
+/// Runtime-configurable limits shared between the D-Bus service and the
+/// clipboard processing tasks. All three are read on every ingest / prune
+/// call, so updates via SetConfig take effect immediately.
+#[derive(Clone)]
+pub struct Limits {
+    pub max_history: Arc<AtomicUsize>,
+    pub max_text_bytes: Arc<AtomicUsize>,
+    pub max_image_bytes: Arc<AtomicUsize>,
+}
+
+impl Limits {
+    pub fn with_defaults() -> Self {
+        Self {
+            max_history: Arc::new(AtomicUsize::new(DEFAULT_MAX_HISTORY)),
+            max_text_bytes: Arc::new(AtomicUsize::new(DEFAULT_MAX_TEXT_BYTES)),
+            max_image_bytes: Arc::new(AtomicUsize::new(DEFAULT_MAX_IMAGE_BYTES)),
+        }
+    }
+    pub fn max_history(&self) -> usize {
+        self.max_history.load(Ordering::Relaxed)
+    }
+    pub fn max_text_bytes(&self) -> usize {
+        self.max_text_bytes.load(Ordering::Relaxed)
+    }
+    pub fn max_image_bytes(&self) -> usize {
+        self.max_image_bytes.load(Ordering::Relaxed)
+    }
+}
+
+/// Submitted by the GJS extension via D-Bus (Meta.Selection path).
+pub struct SubmitRequest {
+    pub mime_type: String,
+    pub bytes: Vec<u8>,
+}
+
+pub struct StrataManager {
+    pub db: Arc<Db>,
+    pub limits: Limits,
+    pub focused_app: Arc<tokio::sync::Mutex<String>>,
+    pub submit_tx: tokio::sync::mpsc::UnboundedSender<SubmitRequest>,
+    /// Send a `()` here to trigger graceful shutdown from the D-Bus Shutdown method.
+    pub shutdown_tx: tokio::sync::mpsc::UnboundedSender<()>,
+}
+
+#[interface(name = "org.gnome.Strata.Manager")]
+impl StrataManager {
+    /// Called by the GJS extension when it detects a clipboard change via Meta.Selection.
+    /// `content` is the raw bytes of the clipboard payload (D-Bus `ay`).
+    async fn submit_item(&self, mime_type: String, content: Vec<u8>) -> zbus::fdo::Result<()> {
+        self.submit_tx
+            .send(SubmitRequest {
+                mime_type,
+                bytes: content,
+            })
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))
+    }
+    /// Return a page of recent items as JSON metadata (no inline thumbnail bytes).
+    /// Clients call GetThumbnail(id) lazily for items with has_thumbnail=true.
+    /// `offset` is from the most recent item (0 = newest).
+    async fn get_history(&self, offset: u32, limit: u32) -> zbus::fdo::Result<String> {
+        let db = self.db.clone();
+        let max = self.limits.max_history();
+        let items = tokio::task::spawn_blocking(move || {
+            db.get_history_page(offset as usize, limit as usize, max)
+        })
+        .await
+        .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?
+        .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?;
+
+        serde_json::to_string(&items).map_err(|e| zbus::fdo::Error::Failed(e.to_string()))
+    }
+
+    /// Full-text search across the entire DB. Empty query returns []; callers
+    /// should fall back to GetHistory in that case.
+    async fn search_history(&self, query: String, limit: u32) -> zbus::fdo::Result<String> {
+        let db = self.db.clone();
+        let items = tokio::task::spawn_blocking(move || db.search_history(&query, limit as usize))
+            .await
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?;
+
+        serde_json::to_string(&items).map_err(|e| zbus::fdo::Error::Failed(e.to_string()))
+    }
+
+    /// Fetch a thumbnail's raw PNG bytes. Returns empty array if the item has no
+    /// thumbnail or doesn't exist (clients can fall back to a placeholder).
+    async fn get_thumbnail(&self, id: String) -> zbus::fdo::Result<Vec<u8>> {
+        let db = self.db.clone();
+        let bytes = tokio::task::spawn_blocking(move || db.get_thumbnail(&id))
+            .await
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?;
+        Ok(bytes.unwrap_or_default())
+    }
+
+    /// Return the raw content of a clipboard item for GJS to write to clipboard.
+    /// GJS uses St.Clipboard (text) or Meta.SelectionSourceMemory (images)
+    /// because the Wayland data-control protocol is not accessible from non-compositor processes.
+    async fn get_item_content(&self, id: String) -> zbus::fdo::Result<(String, String)> {
+        let db = self.db.clone();
+        let item: Option<RawItem> = tokio::task::spawn_blocking(move || db.get_raw_item(&id))
+            .await
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?;
+
+        let item = item.ok_or_else(|| zbus::fdo::Error::Failed("Item not found".into()))?;
+
+        let content_b64 = if let Some(text) = item.content_text {
+            base64::engine::general_purpose::STANDARD.encode(text.as_bytes())
+        } else if let Some(blob) = item.content_blob {
+            base64::engine::general_purpose::STANDARD.encode(&blob)
+        } else {
+            return Err(zbus::fdo::Error::Failed("Item has no content".into()));
+        };
+
+        Ok((item.mime_type, content_b64))
+    }
+
+    /// Restore a clipboard item to the system clipboard.
+    async fn set_clipboard(&self, id: String) -> zbus::fdo::Result<()> {
+        let db = self.db.clone();
+        let item: Option<RawItem> = tokio::task::spawn_blocking(move || db.get_raw_item(&id))
+            .await
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?;
+
+        let item = item.ok_or_else(|| zbus::fdo::Error::Failed("Item not found".into()))?;
+
+        let content = if let Some(text) = item.content_text {
+            crate::clipboard::writer::WriteRequest {
+                mime_type: item.mime_type,
+                content: text.into_bytes(),
+            }
+        } else if let Some(blob) = item.content_blob {
+            crate::clipboard::writer::WriteRequest {
+                mime_type: item.mime_type,
+                content: blob,
+            }
+        } else {
+            return Err(zbus::fdo::Error::Failed("Item has no content".into()));
+        };
+
+        tokio::task::spawn_blocking(move || crate::clipboard::writer::write_to_clipboard(content))
+            .await
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))
+    }
+
+    /// Remove a single item from history.
+    async fn delete_item(
+        &self,
+        id: String,
+        #[zbus(signal_context)] ctx: SignalContext<'_>,
+    ) -> zbus::fdo::Result<()> {
+        let db = self.db.clone();
+        let id_clone = id.clone();
+        tokio::task::spawn_blocking(move || db.delete_item(&id_clone))
+            .await
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?;
+
+        Self::item_deleted(&ctx, &id)
+            .await
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))
+    }
+
+    /// Remove all items from history.
+    async fn clear_history(
+        &self,
+        #[zbus(signal_context)] ctx: SignalContext<'_>,
+    ) -> zbus::fdo::Result<()> {
+        let db = self.db.clone();
+        tokio::task::spawn_blocking(move || db.clear_history())
+            .await
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))?;
+
+        Self::history_cleared(&ctx)
+            .await
+            .map_err(|e| zbus::fdo::Error::Failed(e.to_string()))
+    }
+
+    /// Called by the GJS extension on every focused-window change.
+    /// Used for app exclusion: if the focused app is in the exclusion list,
+    /// the extension will immediately DeleteItem any new item from that app.
+    async fn set_focused_app(&self, app_id: String) {
+        *self.focused_app.lock().await = app_id;
+    }
+
+    /// Push runtime limits from the front-end. Takes effect immediately.
+    /// All three values are absolute (max_text and max_image are bytes,
+    /// not MB). 0 means "leave unchanged" for that field.
+    async fn set_config(
+        &self,
+        max_history: u32,
+        max_text_bytes: u32,
+        max_image_bytes: u32,
+    ) -> zbus::fdo::Result<()> {
+        use std::sync::atomic::Ordering;
+        if max_history > 0 {
+            self.limits
+                .max_history
+                .store(max_history as usize, Ordering::Relaxed);
+        }
+        if max_text_bytes > 0 {
+            self.limits
+                .max_text_bytes
+                .store(max_text_bytes as usize, Ordering::Relaxed);
+        }
+        if max_image_bytes > 0 {
+            self.limits
+                .max_image_bytes
+                .store(max_image_bytes as usize, Ordering::Relaxed);
+        }
+        tracing::info!(
+            "SetConfig: max_history={}, max_text={} B, max_image={} B",
+            self.limits.max_history(),
+            self.limits.max_text_bytes(),
+            self.limits.max_image_bytes(),
+        );
+        Ok(())
+    }
+
+    /// Gracefully shut down the daemon.
+    async fn shutdown(&self) {
+        tracing::info!("Shutdown requested via D-Bus");
+        // Signal the main loop to exit. The reply is sent before the process exits
+        // because we return normally from this method; the main loop exits shortly after.
+        let _ = self.shutdown_tx.send(());
+    }
+
+    // -----------------------------------------------------------------
+    // Signals
+    // -----------------------------------------------------------------
+
+    /// Emitted when a new item is stored (after dedup + thumbnail generation).
+    /// `preview` is a text excerpt (≤120 chars) for text items, or empty for
+    /// images and other binary types - clients should call GetThumbnail(id) to
+    /// fetch image thumbnails lazily.
+    #[zbus(signal)]
+    pub async fn item_added(
+        ctx: &SignalContext<'_>,
+        id: &str,
+        mime_type: &str,
+        preview: &str,
+    ) -> zbus::Result<()>;
+
+    /// Emitted when an item is removed.
+    #[zbus(signal)]
+    pub async fn item_deleted(ctx: &SignalContext<'_>, id: &str) -> zbus::Result<()>;
+
+    /// Emitted when the entire history is cleared.
+    #[zbus(signal)]
+    pub async fn history_cleared(ctx: &SignalContext<'_>) -> zbus::Result<()>;
+}
diff --git a/strata-daemon/src/main.rs b/strata-daemon/src/main.rs
new file mode 100644
index 0000000..b8c7507
--- /dev/null
+++ b/strata-daemon/src/main.rs
@@ -0,0 +1,363 @@
+mod clipboard;
+mod config;
+mod db;
+mod dbus_service;
+
+use std::sync::Arc;
+
+use anyhow::{Context, Result};
+use base64::Engine as _;
+use dbus_service::{Limits, StrataManager, SubmitRequest, THUMB_PX};
+use tokio::sync::{mpsc, Mutex};
+use tracing_subscriber::EnvFilter;
+use wl_clipboard_rs::paste::{get_contents, ClipboardType, MimeType, Seat};
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    tracing_subscriber::fmt()
+        .with_env_filter(
+            EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info")),
+        )
+        .init();
+
+    tracing::info!("Strata daemon starting");
+
+    let cfg = config::Config::new();
+    let db = Arc::new(db::Db::open(&cfg.db_path).context("Opening database")?);
+    let focused_app = Arc::new(Mutex::new(String::new()));
+    let limits = Limits::with_defaults();
+    limits
+        .max_history
+        .store(cfg.max_history, std::sync::atomic::Ordering::Relaxed);
+
+    // -----------------------------------------------------------------------
+    // Channels
+    // -----------------------------------------------------------------------
+    // Wayland-monitor path: daemon reads clipboard bytes itself.
+    let (clip_tx, mut clip_rx) = mpsc::unbounded_channel::<clipboard::monitor::ClipboardChange>();
+    // GJS submit path: GJS reads via Meta.Selection, sends bytes over D-Bus.
+    let (submit_tx, mut submit_rx) = mpsc::unbounded_channel::<SubmitRequest>();
+    // D-Bus Shutdown method path.
+    let (shutdown_tx, mut shutdown_rx) = mpsc::unbounded_channel::<()>();
+
+    // -----------------------------------------------------------------------
+    // D-Bus service
+    // -----------------------------------------------------------------------
+    let manager = StrataManager {
+        db: db.clone(),
+        limits: limits.clone(),
+        focused_app: focused_app.clone(),
+        submit_tx,
+        shutdown_tx,
+    };
+
+    let dbus_conn = zbus::connection::Builder::session()?
+        .serve_at("/org/gnome/Strata", manager)?
+        .build()
+        .await
+        .context("Building D-Bus connection")?;
+
+    // Request the well-known name with ReplaceExisting so a new instance always
+    // wins the race against the outgoing instance during extension reload.
+    dbus_conn
+        .request_name_with_flags(
+            "org.gnome.Strata",
+            zbus::fdo::RequestNameFlags::ReplaceExisting.into(),
+        )
+        .await
+        .context("Acquiring D-Bus name org.gnome.Strata")?;
+
+    tracing::info!("D-Bus service registered as org.gnome.Strata");
+
+    // -----------------------------------------------------------------------
+    // Clipboard monitor (Wayland protocols - optional, soft-fail on GNOME)
+    // GJS provides clipboard content via SubmitItem when this is unavailable.
+    // -----------------------------------------------------------------------
+    match clipboard::monitor::spawn(clip_tx) {
+        Ok(()) => tracing::info!("Wayland clipboard monitor started"),
+        Err(_) => tracing::info!(
+            "Wayland clipboard monitor unavailable, using GJS Meta.Selection path (expected on GNOME)"
+        ),
+    }
+
+    // -----------------------------------------------------------------------
+    // Clipboard processing tasks
+    // -----------------------------------------------------------------------
+    let db_clone = db.clone();
+    let conn_clone = dbus_conn.clone();
+    let limits_clone = limits.clone();
+
+    // Wayland-monitor path.
+    tokio::spawn(async move {
+        while let Some(change) = clip_rx.recv().await {
+            if let Err(e) =
+                process_change(&change.mime_types, &db_clone, &conn_clone, &limits_clone).await
+            {
+                tracing::warn!("Error processing Wayland clipboard change: {e:#}");
+            }
+        }
+    });
+
+    let db_submit = db.clone();
+    let conn_submit = dbus_conn.clone();
+    let limits_submit = limits.clone();
+
+    // GJS submit path.
+    tokio::spawn(async move {
+        while let Some(req) = submit_rx.recv().await {
+            if let Err(e) = process_bytes(
+                req.mime_type,
+                req.bytes,
+                &db_submit,
+                &conn_submit,
+                &limits_submit,
+            )
+            .await
+            {
+                tracing::warn!("Error processing submitted clipboard item: {e:#}");
+            }
+        }
+    });
+
+    // -----------------------------------------------------------------------
+    // Graceful shutdown on SIGTERM / SIGINT
+    // -----------------------------------------------------------------------
+    let mut sigterm = tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate())?;
+    let mut sigint = tokio::signal::unix::signal(tokio::signal::unix::SignalKind::interrupt())?;
+
+    tokio::select! {
+        _ = sigterm.recv()    => { tracing::info!("Received SIGTERM, shutting down"); }
+        _ = sigint.recv()     => { tracing::info!("Received SIGINT, shutting down"); }
+        _ = shutdown_rx.recv() => { tracing::info!("Shutdown via D-Bus, shutting down"); }
+    }
+
+    Ok(())
+}
+
+/// Select the best MIME type to store from a list of offered types.
+///
+/// Priority: images > plain text > rich text (html/rtf) > file URIs.
+///
+/// Plain text is intentionally ranked above text/html and text/rtf so that
+/// when an application (e.g. a code editor or web browser) advertises both a
+/// rich-text variant and a plain-text variant, we capture the plain text. This
+/// avoids storing syntax-highlighted HTML markup instead of source code.
+/// Rich-text types are still captured when no plain-text alternative is offered.
+fn pick_mime(mimes: &[String]) -> Option<&str> {
+    const PREFERRED: &[&str] = &[
+        // Raster images (size-capped at MAX_IMAGE_BYTES).
+        "image/png",
+        "image/jpeg",
+        "image/jpg",
+        "image/gif",
+        "image/webp",
+        "image/bmp",
+        "image/tiff",
+        "image/avif",
+        "image/x-icon",
+        "image/svg+xml",
+        // Plain text (UTF-8 preferred, then locale, then X11 legacy aliases).
+        // Ranked above rich-text so editors that expose both text/plain and
+        // text/html give us the raw source, not styled markup.
+        "text/plain;charset=utf-8",
+        "UTF8_STRING",
+        "text/plain",
+        "STRING",
+        "TEXT",
+        // Rich text -- only reached when no plain-text offer is available.
+        "text/html",
+        "text/rtf",
+        "application/rtf",
+        "text/markdown",
+        // File-manager copy/cut payloads (URI list, not bytes).
+        "x-special/gnome-copied-files",
+        "x-special/nautilus-clipboard",
+        "application/x-kde-cutselection",
+        "text/uri-list",
+    ];
+    // Allowlist only: accepting arbitrary mimes would force us to read
+    // potentially huge payloads (1 GB binaries, etc.) before we could
+    // size-check them. Unknown mimes are silently dropped.
+    PREFERRED
+        .iter()
+        .find(|&&want| mimes.iter().any(|m| m == want))
+        .copied()
+}
+
+async fn process_change(
+    mime_types: &[String],
+    db: &Arc<db::Db>,
+    conn: &zbus::Connection,
+    limits: &Limits,
+) -> Result<()> {
+    // Password managers (KeePassXC, KeePass, some Bitwarden builds) mark
+    // copied secrets with this mime hint. Skip the change entirely so we
+    // never store the password.
+    if mime_types.iter().any(|m| m == "x-kde-passwordManagerHint") {
+        tracing::debug!("Skipping clipboard change marked as sensitive");
+        return Ok(());
+    }
+    let mime = match pick_mime(mime_types) {
+        Some(m) => m.to_string(),
+        None => {
+            tracing::debug!("No usable MIME type in {:?}", mime_types);
+            return Ok(());
+        }
+    };
+
+    tracing::debug!("Processing Wayland clipboard change, MIME: {}", mime);
+
+    let mime_clone = mime.clone();
+    let (raw_bytes, actual_mime) =
+        tokio::task::spawn_blocking(move || read_clipboard_bytes(&mime_clone))
+            .await?
+            .context("Reading clipboard content")?;
+
+    if raw_bytes.is_empty() {
+        return Ok(());
+    }
+
+    process_bytes(actual_mime, raw_bytes, db, conn, limits).await
+}
+
+/// Core storage path - shared by the Wayland-monitor and GJS-submit paths.
+async fn process_bytes(
+    mime: String,
+    raw_bytes: Vec<u8>,
+    db: &Arc<db::Db>,
+    conn: &zbus::Connection,
+    limits: &Limits,
+) -> Result<()> {
+    if raw_bytes.is_empty() {
+        return Ok(());
+    }
+
+    let is_image = mime.starts_with("image/");
+
+    // Enforce size limits
+    let max = if is_image {
+        limits.max_image_bytes()
+    } else {
+        limits.max_text_bytes()
+    };
+    if raw_bytes.len() > max {
+        tracing::debug!(
+            "Clipboard item too large ({} bytes, limit {}), skipping",
+            raw_bytes.len(),
+            max
+        );
+        return Ok(());
+    }
+
+    // Compute content hash for deduplication
+    let hash = blake3::hash(&raw_bytes).to_hex().to_string();
+
+    // For images: generate a thumbnail in spawn_blocking; store original as blob, thumbnail separately.
+    // For text: store as UTF-8 string.
+    // The `preview` string emitted with the ItemAdded signal is now ALWAYS a text excerpt;
+    // image thumbnails are fetched lazily by clients via GetThumbnail(id) to keep the
+    // signal payload small (and consistent with paginated GetHistory results).
+    let (content_text, content_blob, thumbnail_blob, preview) = if is_image {
+        let raw_for_thumb = raw_bytes.clone();
+        let thumb_result =
+            tokio::task::spawn_blocking(move || make_thumbnail(&raw_for_thumb, THUMB_PX)).await?;
+
+        let thumb_bytes = match thumb_result {
+            Ok((bytes, _b64)) => bytes,
+            Err(e) => {
+                tracing::warn!("Image thumbnail generation failed: {e}");
+                return Ok(());
+            }
+        };
+        (None, Some(raw_bytes), Some(thumb_bytes), String::new())
+    } else {
+        let text = String::from_utf8_lossy(&raw_bytes).into_owned();
+        let preview: String = text.chars().take(120).collect();
+        (Some(text), None, None, preview)
+    };
+
+    let db_clone = db.clone();
+    let mime_clone = mime.clone();
+    let hash_clone = hash.clone();
+
+    let (id, is_new) = tokio::task::spawn_blocking(move || {
+        db_clone.upsert_item(
+            &mime_clone,
+            content_text.as_deref(),
+            content_blob.as_deref(),
+            thumbnail_blob.as_deref(),
+            &hash_clone,
+            None, // source_app is set via SetFocusedApp
+        )
+    })
+    .await?
+    .context("Upserting clipboard item")?;
+
+    // Prune old items to stay within max_history limit.
+    // Only needed when a genuinely new item was just inserted.
+    let pruned_ids: Vec<String> = if is_new {
+        let db_prune = db.clone();
+        let max_history = limits.max_history();
+        tokio::task::spawn_blocking(move || db_prune.prune(max_history))
+            .await?
+            .context("Pruning history")?
+    } else {
+        Vec::new()
+    };
+
+    if is_new {
+        let iface = conn
+            .object_server()
+            .interface::<_, StrataManager>("/org/gnome/Strata")
+            .await
+            .context("Getting StrataManager interface ref")?;
+
+        StrataManager::item_added(iface.signal_context(), &id, &mime, &preview)
+            .await
+            .context("Emitting ItemAdded signal")?;
+
+        for pid in &pruned_ids {
+            if let Err(e) = StrataManager::item_deleted(iface.signal_context(), pid).await {
+                tracing::warn!("Emitting ItemDeleted for pruned id={}: {}", pid, e);
+            }
+        }
+
+        tracing::debug!("Stored new clipboard item id={} mime={}", id, mime);
+    } else {
+        tracing::debug!("Promoted duplicate clipboard item id={}", id);
+    }
+
+    Ok(())
+}
+
+/// Read clipboard content using wl-clipboard-rs (opens its own Wayland connection).
+/// Returns `(bytes, actual_mime_type)`.
+fn read_clipboard_bytes(mime: &str) -> Result<(Vec<u8>, String)> {
+    use std::io::Read;
+
+    let (mut reader, actual_mime) = get_contents(
+        ClipboardType::Regular,
+        Seat::Unspecified,
+        MimeType::Specific(mime),
+    )
+    .map_err(|e| anyhow::anyhow!("wl-clipboard-rs read error: {e:?}"))?;
+
+    let mut buf = Vec::new();
+    reader.read_to_end(&mut buf)?;
+    Ok((buf, actual_mime))
+}
+
+/// Generate a PNG thumbnail (≤`max_px`×`max_px`) from raw image bytes.
+/// Returns `(thumbnail_bytes, base64_preview)`.
+fn make_thumbnail(raw: &[u8], max_px: u32) -> Result<(Vec<u8>, String)> {
+    let img = image::load_from_memory(raw).context("Decoding image")?;
+
+    let thumb = img.thumbnail(max_px, max_px);
+    let mut out = Vec::new();
+    thumb
+        .write_to(&mut std::io::Cursor::new(&mut out), image::ImageFormat::Png)
+        .context("Encoding thumbnail")?;
+
+    let b64 = base64::engine::general_purpose::STANDARD.encode(&out);
+    Ok((out, b64))
+}
diff --git a/strata@edu4rdshl.dev/README.md b/strata@edu4rdshl.dev/README.md
new file mode 100644
index 0000000..0636903
--- /dev/null
+++ b/strata@edu4rdshl.dev/README.md
@@ -0,0 +1,84 @@
+# Strata GNOME Shell extension
+
+The GJS front-end for [Strata](../README.md). Renders the panel UI and forwards
+clipboard events to [`strata-daemon`](../strata-daemon/README.md) over D-Bus.
+
+> The extension requires `strata-daemon` to be installed and available in
+> `$PATH`. See the [main README](../README.md) for install instructions.
+> The extension is **pure JavaScript** - no binary is bundled.
+>
+> **Compatibility:** Only tested on GNOME Shell 50. The `metadata.json`
+> declares support for 45–50 since the APIs used (`Meta.Selection`,
+> `St`, `Gio`, `Adw`) have been stable across that range, but older
+> versions are untested. If you try one and it works, open an issue to
+> let us know.
+
+## File layout
+
+```
+strata@edu4rdshl.dev/
+├── extension.js       Lifecycle, daemon lookup/supervisor, clipboard ingest
+├── prefs.js           Preferences window
+├── dbus.js            Generated D-Bus proxy + interface XML
+├── stylesheet.css     Panel styles
+├── metadata.json      GNOME Shell metadata (tested on Shell 50; declares 45–50)
+├── schemas/           GSettings schema (max history, size caps, shortcut)
+└── ui/
+    ├── panel.js       Popup panel: pagination, search, scroll-to-load
+    └── clipboardItem.js  Per-item row (text preview or lazy thumbnail)
+```
+
+## How it works
+
+1. On enable, `extension.js` checks if the D-Bus name is already owned
+   (daemon running via systemd). If not, it looks for `strata-daemon` in
+   `$PATH` and spawns it, auto-respawning on crash with exponential backoff.
+2. `Meta.Selection` notifies us of every clipboard change. We read the raw
+   bytes (allowlisted mimes only, password-manager hint skipped) and ship
+   them to the daemon via `SubmitItem(s, ay)`.
+3. The daemon dedups, stores, indexes, and emits `ItemAdded`.
+4. `ui/panel.js` paginates history with `GetHistory`, debounces search with
+   `SearchHistoryAsync`, and writes back via `St.Clipboard.set_text` or
+   `Meta.SelectionSourceMemory` (never `spawn`, never `launch_uri`).
+
+## Settings
+
+Open with `gnome-extensions prefs strata@edu4rdshl.dev`:
+
+**History**
+- **Max history** (50–2000 items)
+- **Items per page** (20–200, rows fetched on open and on each scroll-to-bottom)
+- **Maximum text size** (1–100 MB, larger items are not stored)
+- **Maximum image size** (1–100 MB, larger items are not stored)
+
+**Appearance**
+- **Panel width** (pixels)
+- **Panel max height** (pixels, list scrolls past this)
+- **Move activated item to top**
+- **Panel position** (top-left, top-center, top-right)
+
+**Keyboard**
+- **Open Strata** shortcut
+
+**Privacy**
+- **App exclusions** (apps whose clipboard is never recorded)
+
+All four history/size limits are pushed to the daemon over D-Bus (`SetConfig`) as soon
+as you change them. No restart needed.
+
+## Develop
+
+```sh
+# Build daemon + install extension + recompile schemas
+make -C .. install-daemon && make -C .. install
+
+# Live-reload logs
+journalctl --user -f /usr/bin/gnome-shell | grep -i strata
+```
+
+If you only change JS, you can re-`make install` and restart the Shell
+(Wayland: log out / in; X11: `Alt+F2`, `r`).
+
+## License
+
+GPL-3.0-or-later.
diff --git a/strata@edu4rdshl.dev/dbus.js b/strata@edu4rdshl.dev/dbus.js
new file mode 100644
index 0000000..d76e7ba
--- /dev/null
+++ b/strata@edu4rdshl.dev/dbus.js
@@ -0,0 +1,83 @@
+/**
+ * dbus.js - Async D-Bus proxy for the Strata daemon.
+ *
+ * Uses Gio.DBusProxy.makeProxyWrapper to generate a typed proxy class.
+ * All method calls should use the *Async variants (return Promises) to avoid
+ * blocking the GNOME Shell compositor main loop.
+ */
+
+import Gio from 'gi://Gio';
+
+const STRATA_IFACE_XML = `
+<node>
+  <interface name="org.gnome.Strata.Manager">
+
+    <method name="GetHistory">
+      <arg type="u" direction="in"  name="offset"/>
+      <arg type="u" direction="in"  name="limit"/>
+      <arg type="s" direction="out" name="json"/>
+    </method>
+
+    <method name="SearchHistory">
+      <arg type="s" direction="in"  name="query"/>
+      <arg type="u" direction="in"  name="limit"/>
+      <arg type="s" direction="out" name="json"/>
+    </method>
+
+    <method name="GetThumbnail">
+      <arg type="s"  direction="in"  name="id"/>
+      <arg type="ay" direction="out" name="png_bytes"/>
+    </method>
+
+    <method name="GetItemContent">
+      <arg type="s" direction="in"  name="id"/>
+      <arg type="s" direction="out" name="mime_type"/>
+      <arg type="s" direction="out" name="content_b64"/>
+    </method>
+
+    <method name="SetClipboard">
+      <arg type="s" direction="in" name="id"/>
+    </method>
+
+    <method name="DeleteItem">
+      <arg type="s" direction="in" name="id"/>
+    </method>
+
+    <method name="ClearHistory"/>
+
+    <method name="SetFocusedApp">
+      <arg type="s" direction="in" name="app_id"/>
+    </method>
+
+    <method name="Shutdown"/>
+
+    <method name="SetConfig">
+      <arg type="u" direction="in" name="max_history"/>
+      <arg type="u" direction="in" name="max_text_bytes"/>
+      <arg type="u" direction="in" name="max_image_bytes"/>
+    </method>
+
+    <method name="SubmitItem">
+      <arg type="s"  direction="in" name="mime_type"/>
+      <arg type="ay" direction="in" name="content"/>
+    </method>
+
+    <signal name="ItemAdded">
+      <arg type="s" name="id"/>
+      <arg type="s" name="mime_type"/>
+      <arg type="s" name="preview"/>
+    </signal>
+
+    <signal name="ItemDeleted">
+      <arg type="s" name="id"/>
+    </signal>
+
+    <signal name="HistoryCleared"/>
+
+  </interface>
+</node>`;
+
+export const StrataProxy = Gio.DBusProxy.makeProxyWrapper(STRATA_IFACE_XML);
+
+export const BUS_NAME    = 'org.gnome.Strata';
+export const OBJECT_PATH = '/org/gnome/Strata';
diff --git a/strata@edu4rdshl.dev/extension.js b/strata@edu4rdshl.dev/extension.js
new file mode 100644
index 0000000..385561d
--- /dev/null
+++ b/strata@edu4rdshl.dev/extension.js
@@ -0,0 +1,582 @@
+/* extension.js - Strata extension lifecycle. */
+
+import GLib from 'gi://GLib';
+import Gio from 'gi://Gio';
+import Meta from 'gi://Meta';
+import Shell from 'gi://Shell';
+import St from 'gi://St';
+
+import { Extension } from 'resource:///org/gnome/shell/extensions/extension.js';
+import * as Main from 'resource:///org/gnome/shell/ui/main.js';
+import * as PanelMenu from 'resource:///org/gnome/shell/ui/panelMenu.js';
+
+import { StrataProxy, BUS_NAME, OBJECT_PATH } from './dbus.js';
+import { StrataPanel } from './ui/panel.js';
+
+export default class StrataExtension extends Extension {
+    /** @type {Gio.Subprocess | null} */
+    _daemon = null;
+    _daemonSpawnTime = 0;
+    _daemonRestartAttempts = 0;
+    _shuttingDown = false;
+    _daemonRestartTimerId = null;
+
+    /** @type {StrataPanel | null} */
+    _panel = null;
+    /** @type {object | null} Gio.DBusProxy instance */
+    _proxy = null;
+
+    _itemAddedId = null;
+    _itemDeletedId = null;
+    _historyClearedId = null;
+
+    /** @type {number | null} focused-window signal connection ID */
+    _focusSignalId = null;
+
+    /** @type {string} WM class of the currently focused app (lower-cased) */
+    _currentFocusedApp = '';
+
+    /** @type {object | null} PanelMenu.Button indicator */
+    _indicator = null;
+
+    /** @type {number | null} Meta.Selection owner-changed signal ID */
+    _selectionChangedId = null;
+
+    /** @type {number | null} Debounce timer for clipboard reads */
+    _clipboardDebounceId = null;
+
+    /** True while a transfer_async is in flight - prevents concurrent transfers. */
+    _clipboardTransferPending = false;
+
+    /** @type {string[]} Apps to exclude from history */
+    _excludedApps = [];
+    _pendingSignalId = null;
+
+    /** @type {boolean} Re-entrancy guard for signal processing */
+    #busy = false;
+
+    /** @type {number | null} Keyboard shortcut binding ID */
+    _shortcutId = null;
+
+    enable() {
+        this._shuttingDown = false;
+        this._daemonRestartAttempts = 0;
+
+        this._settings = this.getSettings();
+        this._excludedApps = this._settings.get_strv('excluded-apps');
+        this._settings.connect('changed::excluded-apps', () => {
+            this._excludedApps = this._settings.get_strv('excluded-apps');
+        });
+
+        this._readSizeLimits();
+        this._configChangedIds = [
+            this._settings.connect('changed::max-history',  () => { this._readSizeLimits(); this._pushConfig(); }),
+            this._settings.connect('changed::max-text-mb',  () => { this._readSizeLimits(); this._pushConfig(); }),
+            this._settings.connect('changed::max-image-mb', () => { this._readSizeLimits(); this._pushConfig(); }),
+        ];
+
+        // 1. Top-bar indicator icon.
+        this._addIndicator();
+
+        // 2. Spawn the Rust daemon.
+        this._spawnDaemon();
+
+        // 3. Connect D-Bus proxy (async - doesn't block if daemon isn't ready yet).
+        this._connectProxy();
+
+        // 4. Track focused window (lightweight - no clipboard I/O).
+        this._connectFocusTracking();
+
+        // 5. Monitor clipboard via Meta.Selection (GNOME-native, no Wayland protocol needed).
+        this._connectClipboardMonitor();
+
+        // 6. Register keyboard shortcut.
+        this._registerShortcut();
+    }
+
+    disable() {
+        // Signal the watchdog NOT to respawn on exit.
+        this._shuttingDown = true;
+        if (this._daemonRestartTimerId !== null) {
+            GLib.Source.remove(this._daemonRestartTimerId);
+            this._daemonRestartTimerId = null;
+        }
+        // Clean up in reverse order.
+        this._unregisterShortcut();
+        this._disconnectClipboardMonitor();
+        this._disconnectFocusTracking();
+        this._disconnectSignals();
+        if (this._proxyOwnerId && this._proxy) {
+            this._proxy.disconnect(this._proxyOwnerId);
+            this._proxyOwnerId = 0;
+        }
+        if (this._configChangedIds && this._settings) {
+            for (const id of this._configChangedIds) this._settings.disconnect(id);
+            this._configChangedIds = null;
+        }
+        this._panel?.destroy();
+        this._panel = null;
+        this._indicator?.destroy();
+        this._indicator = null;
+        this._stopDaemon();
+        this._proxy = null;
+        this._settings = null;
+    }
+
+
+    _addIndicator() {
+        // dontCreateMenu = true so PanelMenu.Button doesn't open an empty popup.
+        this._indicator = new PanelMenu.Button(0.0, 'Strata', true);
+        const icon = new St.Icon({
+            icon_name: 'edit-paste-symbolic',
+            style_class: 'system-status-icon',
+        });
+        this._indicator.add_child(icon);
+        this._indicator.connect('button-press-event', () => {
+            this._panel?.toggle();
+            return false; // EVENT_PROPAGATE
+        });
+        Main.panel.addToStatusArea('strata', this._indicator);
+    }
+
+
+    _connectClipboardMonitor() {
+        const selection = global.display.get_selection();
+        this._selectionChangedId = selection.connect('owner-changed', (_sel, type) => {
+            if (type !== Meta.SelectionType.SELECTION_CLIPBOARD) return;
+            this._scheduleClipboardRead();
+        });
+    }
+
+    _disconnectClipboardMonitor() {
+        // Cancel any pending debounce timer and reset the in-flight guard so
+        // the next enable() cycle starts clean.
+        if (this._clipboardDebounceId !== null) {
+            GLib.Source.remove(this._clipboardDebounceId);
+            this._clipboardDebounceId = null;
+        }
+        this._clipboardTransferPending = false;
+        if (this._selectionChangedId !== null) {
+            global.display.get_selection().disconnect(this._selectionChangedId);
+            this._selectionChangedId = null;
+        }
+    }
+
+    /** Debounce entry point - coalesces rapid clipboard changes (e.g. from
+     *  apps that write clipboard multiple times per operation). */
+    _scheduleClipboardRead() {
+        if (this._clipboardDebounceId !== null) {
+            GLib.Source.remove(this._clipboardDebounceId);
+            this._clipboardDebounceId = null;
+        }
+        this._clipboardDebounceId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, 50, () => {
+            this._clipboardDebounceId = null;
+            this._readClipboard();
+            return GLib.SOURCE_REMOVE;
+        });
+    }
+
+    /** Single in-flight transfer at a time - prevents queuing multiple concurrent
+     *  transfer_async + base64_encode operations that would stall the main thread. */
+    _readClipboard() {
+        if (this._clipboardTransferPending) return;
+        const selection = global.display.get_selection();
+        const mimes = selection.get_mimetypes(Meta.SelectionType.SELECTION_CLIPBOARD);
+        // Password managers (KeePassXC, KeePass, some Bitwarden builds) mark
+        // copied secrets with this hint mime. Honoring it lets users keep
+        // their passwords out of clipboard history.
+        if (mimes.includes('x-kde-passwordManagerHint')) return;
+        const mime = this._pickMime(mimes);
+        if (!mime) return;
+
+        this._clipboardTransferPending = true;
+        const outputStream = Gio.MemoryOutputStream.new_resizable();
+        selection.transfer_async(
+            Meta.SelectionType.SELECTION_CLIPBOARD,
+            mime,
+            -1,
+            outputStream,
+            null,
+            (_obj, result) => {
+                this._clipboardTransferPending = false;
+                try {
+                    selection.transfer_finish(result);
+                    outputStream.close(null);
+                    const bytes = outputStream.steal_as_bytes();
+                    const size = bytes.get_size();
+                    if (size === 0) return;
+                    const MAX_TEXT  = this._maxTextBytes;
+                    const MAX_IMAGE = this._maxImageBytes;
+                    if (size > (mime.startsWith('image/') ? MAX_IMAGE : MAX_TEXT)) return;
+                    // Send raw bytes as a D-Bus `ay` so we avoid blocking
+                    // synchronous base64 work on the GJS main thread.
+                    this._proxy?.SubmitItemRemote(mime, bytes.get_data(), () => {});
+                } catch (e) {
+                    console.error('[Strata] Clipboard read error:', e.message);
+                }
+            }
+        );
+    }
+
+    /** Pick the best MIME type to store from the offered list (mirrors Rust pick_mime). */
+    _pickMime(mimes) {
+        const PREFERRED = [
+            // Raster images (size-capped at MAX_IMAGE).
+            'image/png', 'image/jpeg', 'image/jpg', 'image/gif', 'image/webp',
+            'image/bmp', 'image/tiff', 'image/avif', 'image/x-icon',
+            'image/svg+xml',
+            // Plain text (UTF-8 preferred, then locale, then X11 legacy aliases).
+            // Ranked above rich-text so editors that expose both text/plain and
+            // text/html give us raw source, not styled markup.
+            'text/plain;charset=utf-8', 'UTF8_STRING',
+            'text/plain', 'STRING', 'TEXT',
+            // Rich text -- only reached when no plain-text offer is available.
+            'text/html',
+            'text/rtf', 'application/rtf',
+            'text/markdown',
+            // File-manager copy/cut payloads (URI list, not bytes).
+            'x-special/gnome-copied-files',
+            'x-special/nautilus-clipboard',
+            'application/x-kde-cutselection',
+            'text/uri-list',
+        ];
+        for (const want of PREFERRED)
+            if (mimes.includes(want)) return want;
+        // Allowlist only: see comment in pick_mime (daemon). Reading unknown
+        // mime types could pull a 1 GB blob into Shell memory before we can
+        // size-check it.
+        return null;
+    }
+
+
+    _spawnDaemon() {
+        if (this._shuttingDown) return;
+
+        // Check if a daemon is already running (e.g. via systemd user service).
+        // If the D-Bus name is already owned we must not spawn a second instance.
+        Gio.DBus.session.call(
+            'org.freedesktop.DBus', '/org/freedesktop/DBus',
+            'org.freedesktop.DBus', 'GetNameOwner',
+            new GLib.Variant('(s)', [BUS_NAME]),
+            null, Gio.DBusCallFlags.NONE, 2000, null,
+            (_conn, result) => {
+                try {
+                    _conn.call_finish(result);
+                    // Name already owned - daemon managed externally (systemd etc).
+                    console.log('[Strata] daemon already running, skipping spawn');
+                } catch (_) {
+                    // Name not owned - spawn it ourselves.
+                    this._doSpawnDaemon();
+                }
+            }
+        );
+    }
+
+    _doSpawnDaemon() {
+        if (this._shuttingDown) return;
+        const daemonPath = GLib.find_program_in_path('strata-daemon');
+        if (!daemonPath) {
+            console.error(
+                '[Strata] strata-daemon not found in PATH. ' +
+                'Install the strata-daemon package or place the binary in your PATH.'
+            );
+            this._notifyDaemonMissing();
+            return;
+        }
+        try {
+            this._daemon = new Gio.Subprocess({
+                argv: [daemonPath],
+                flags: Gio.SubprocessFlags.NONE,
+            });
+            this._daemon.init(null);
+            this._daemonSpawnTime = GLib.get_monotonic_time() / 1000; // ms
+            this._daemon.wait_async(null, () => this._onDaemonExited());
+        } catch (e) {
+            console.error('[Strata] Failed to spawn daemon:', e);
+            this._scheduleDaemonRestart();
+        }
+    }
+
+    _notifyDaemonMissing() {
+        try {
+            const source = new imports.ui.messageTray.Source({
+                title: 'Strata',
+                icon: new St.Icon({ icon_name: 'edit-paste-symbolic' }),
+            });
+            Main.messageTray.add(source);
+            const notification = new imports.ui.messageTray.Notification({
+                source,
+                title: 'Strata: daemon not found',
+                body: 'Install the strata-daemon package to enable clipboard history.',
+                urgency: imports.ui.messageTray.Urgency.HIGH,
+            });
+            source.addNotification(notification);
+        } catch (_) {
+            // Message tray may not be available (e.g. during early startup) - already logged above.
+        }
+    }
+
+    _onDaemonExited() {
+        if (!this._daemon) return; // shutdown initiated by _stopDaemon
+        const exit = this._daemon.get_exit_status();
+        const lifetimeMs = (GLib.get_monotonic_time() / 1000) - this._daemonSpawnTime;
+        this._daemon = null;
+
+        if (this._shuttingDown) {
+            console.log(`[Strata] daemon exited cleanly during shutdown (status=${exit})`);
+            return;
+        }
+
+        // Reset attempt counter if the daemon ran long enough to be considered healthy.
+        if (lifetimeMs >= 5000) {
+            this._daemonRestartAttempts = 0;
+        }
+        this._daemonRestartAttempts++;
+        console.error(
+            `[Strata] daemon exited with status ${exit} after ${Math.round(lifetimeMs)}ms ` +
+            `(restart attempt ${this._daemonRestartAttempts})`
+        );
+
+        if (this._daemonRestartAttempts > 5) {
+            console.error(
+                '[Strata] Daemon crashed 5 times in rapid succession - giving up. ' +
+                'Disable and re-enable the extension to retry.'
+            );
+            return;
+        }
+        this._scheduleDaemonRestart();
+    }
+
+    _scheduleDaemonRestart() {
+        if (this._shuttingDown) return;
+        // Exponential backoff: 1s, 2s, 4s, 8s, 16s
+        const backoffMs = 1000 * Math.pow(2, Math.max(0, this._daemonRestartAttempts - 1));
+        console.log(`[Strata] respawning daemon in ${backoffMs}ms`);
+        this._daemonRestartTimerId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, backoffMs, () => {
+            this._daemonRestartTimerId = null;
+            this._spawnDaemon();
+            return GLib.SOURCE_REMOVE;
+        });
+    }
+
+    _stopDaemon() {
+        if (!this._daemon) return;
+        // Capture reference immediately so the timer doesn't kill a newly-spawned daemon.
+        const daemonToStop = this._daemon;
+        this._daemon = null;
+        try {
+            // Graceful shutdown via D-Bus first.
+            this._proxy?.ShutdownRemote(() => {});
+        } catch (_) {}
+        // Give it 1.5s then force-terminate.
+        GLib.timeout_add(GLib.PRIORITY_LOW, 1500, () => {
+            try { daemonToStop.send_signal(15); } catch (_) {} // SIGTERM
+            return GLib.SOURCE_REMOVE;
+        });
+    }
+
+
+    _connectProxy() {
+        try {
+            this._proxy = new StrataProxy(
+                Gio.DBus.session,
+                BUS_NAME,
+                OBJECT_PATH,
+                (proxy, error) => {
+                    if (error) {
+                        console.error('[Strata] D-Bus proxy error:', error);
+                        return;
+                    }
+                    this._connectSignals();
+                    this._panel = new StrataPanel(proxy, this._settings, this._indicator);
+                    // Push config now if the daemon is already up, and
+                    // again on every owner transition so a respawned
+                    // daemon picks up the latest values.
+                    this._pushConfig();
+                    this._proxyOwnerId = proxy.connect('notify::g-name-owner',
+                        () => { if (proxy.g_name_owner) this._pushConfig(); });
+                }
+            );
+        } catch (e) {
+            console.error('[Strata] Failed to create D-Bus proxy:', e);
+        }
+    }
+
+    /** Read size limits from GSettings into instance fields (bytes). */
+    _readSizeLimits() {
+        this._maxHistory     = this._settings.get_int('max-history');
+        this._maxTextBytes   = this._settings.get_int('max-text-mb')  * 1024 * 1024;
+        this._maxImageBytes  = this._settings.get_int('max-image-mb') * 1024 * 1024;
+    }
+
+    /** Push runtime limits to the daemon. Safe to call before the proxy
+     *  is ready or after the daemon has gone away. */
+    _pushConfig() {
+        this._proxy?.SetConfigRemote(
+            this._maxHistory,
+            this._maxTextBytes,
+            this._maxImageBytes,
+            () => {}
+        );
+    }
+
+    _connectSignals() {
+        this._itemAddedId = Gio.DBus.session.signal_subscribe(
+            BUS_NAME,
+            'org.gnome.Strata.Manager',
+            'ItemAdded',
+            OBJECT_PATH,
+            null,
+            Gio.DBusSignalFlags.NONE,
+            this._onItemAdded.bind(this)
+        );
+
+        this._itemDeletedId = Gio.DBus.session.signal_subscribe(
+            BUS_NAME,
+            'org.gnome.Strata.Manager',
+            'ItemDeleted',
+            OBJECT_PATH,
+            null,
+            Gio.DBusSignalFlags.NONE,
+            (_conn, _sender, _path, _iface, _signal, params) => {
+                const [id] = params.deepUnpack();
+                // Best-effort: unlink the on-disk thumbnail file (if any).
+                // GLib.unlink returns -1 if file doesn't exist; we ignore that.
+                try {
+                    const cachePath =
+                        `${GLib.get_user_cache_dir()}/strata/thumbnails/${id}.png`;
+                    GLib.unlink(cachePath);
+                } catch (_) { /* not all items have thumbnails - fine */ }
+                GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => {
+                    this._panel?.removeItem(id);
+                    return GLib.SOURCE_REMOVE;
+                });
+            }
+        );
+
+        this._historyClearedId = Gio.DBus.session.signal_subscribe(
+            BUS_NAME,
+            'org.gnome.Strata.Manager',
+            'HistoryCleared',
+            OBJECT_PATH,
+            null,
+            Gio.DBusSignalFlags.NONE,
+            () => {
+                // Wipe all on-disk thumbnails when daemon clears history.
+                try {
+                    const dir = `${GLib.get_user_cache_dir()}/strata/thumbnails`;
+                    const d = Gio.File.new_for_path(dir);
+                    if (d.query_exists(null)) {
+                        const en = d.enumerate_children(
+                            'standard::name', Gio.FileQueryInfoFlags.NONE, null);
+                        let info;
+                        while ((info = en.next_file(null))) {
+                            try { d.get_child(info.get_name()).delete(null); } catch (_) {}
+                        }
+                        en.close(null);
+                    }
+                } catch (e) { console.error('[Strata] cache clear failed:', e); }
+                GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => {
+                    this._panel?.clearItems();
+                    return GLib.SOURCE_REMOVE;
+                });
+            }
+        );
+    }
+
+    _disconnectSignals() {
+        if (this._itemAddedId !== null) {
+            Gio.DBus.session.signal_unsubscribe(this._itemAddedId);
+            this._itemAddedId = null;
+        }
+        if (this._itemDeletedId !== null) {
+            Gio.DBus.session.signal_unsubscribe(this._itemDeletedId);
+            this._itemDeletedId = null;
+        }
+        if (this._historyClearedId !== null) {
+            Gio.DBus.session.signal_unsubscribe(this._historyClearedId);
+            this._historyClearedId = null;
+        }
+        if (this._pendingSignalId !== null) {
+            GLib.Source.remove(this._pendingSignalId);
+            this._pendingSignalId = null;
+        }
+    }
+
+
+    _onItemAdded(_conn, _sender, _path, _iface, _signal, params) {
+        // Debounce: if the daemon emits a burst, coalesce into one update.
+        if (this._pendingSignalId !== null) {
+            GLib.Source.remove(this._pendingSignalId);
+            this._pendingSignalId = null;
+        }
+        this._pendingSignalId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, 50, () => {
+            this._pendingSignalId = null;
+            this._processItemAdded(params).catch(e => console.error('[Strata] ItemAdded error:', e));
+            return GLib.SOURCE_REMOVE;
+        });
+    }
+
+    async _processItemAdded(params) {
+        if (this.#busy) return;
+        this.#busy = true;
+        try {
+            const [id, mimeType, preview] = params.deepUnpack();
+
+            // Exclusion check - no clipboard I/O, just string comparison.
+            if (this._isExcluded(this._currentFocusedApp)) {
+                try {
+                    await this._proxy.DeleteItemAsync(id);
+                } catch (e) {
+                    // ignore - item may already be gone
+                }
+                return;
+            }
+
+            // Defer UI mutation to after the current frame renders.
+            GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => {
+                this._panel?.prependItem(id, mimeType, preview);
+                return GLib.SOURCE_REMOVE;
+            });
+        } finally {
+            this.#busy = false;
+        }
+    }
+
+    _isExcluded(appClass) {
+        if (!appClass) return false;
+        return this._excludedApps.some(ex => appClass.includes(ex.toLowerCase()));
+    }
+
+
+    _connectFocusTracking() {
+        this._focusSignalId = global.display.connect('notify::focus-window', () => {
+            const win = global.display.focus_window;
+            this._currentFocusedApp = (win?.get_wm_class() ?? '').toLowerCase();
+            // Inform the daemon (best-effort, ignore failures).
+            this._proxy?.SetFocusedAppRemote(this._currentFocusedApp, () => {});
+        });
+    }
+
+    _disconnectFocusTracking() {
+        if (this._focusSignalId !== null) {
+            global.display.disconnect(this._focusSignalId);
+            this._focusSignalId = null;
+        }
+    }
+
+
+    _registerShortcut() {
+        Main.wm.addKeybinding(
+            'keyboard-shortcut',
+            this._settings,
+            Meta.KeyBindingFlags.IGNORE_AUTOREPEAT,
+            Shell.ActionMode.NORMAL | Shell.ActionMode.OVERVIEW,
+            () => this._panel?.toggle()
+        );
+    }
+
+    _unregisterShortcut() {
+        Main.wm.removeKeybinding('keyboard-shortcut');
+    }
+}
diff --git a/strata@edu4rdshl.dev/metadata.json b/strata@edu4rdshl.dev/metadata.json
new file mode 100644
index 0000000..497deb3
--- /dev/null
+++ b/strata@edu4rdshl.dev/metadata.json
@@ -0,0 +1,9 @@
+{
+  "name": "Strata",
+  "description": "A fast, stutter-free clipboard manager. All I/O runs in a Rust daemon - GNOME Shell is never blocked.",
+  "uuid": "strata@edu4rdshl.dev",
+  "version": 2,
+  "shell-version": ["45", "46", "47", "48", "49", "50"],
+  "settings-schema": "org.gnome.shell.extensions.strata",
+  "url": "https://github.com/Edu4rdSHL/Strata"
+}
diff --git a/strata@edu4rdshl.dev/prefs.js b/strata@edu4rdshl.dev/prefs.js
new file mode 100644
index 0000000..12fe690
--- /dev/null
+++ b/strata@edu4rdshl.dev/prefs.js
@@ -0,0 +1,347 @@
+/**
+ * prefs.js - Strata preferences window (GNOME 45+ / Adw).
+ *
+ * Pages:
+ *  General:  max-history SpinRow, keyboard-shortcut ShortcutRow
+ *  Privacy:  excluded-apps ExpanderRow + StringList (one entry per line)
+ */
+
+import Adw from 'gi://Adw';
+import Gtk from 'gi://Gtk';
+import Gdk from 'gi://Gdk';
+import GLib from 'gi://GLib';
+import Gio from 'gi://Gio';
+
+import { ExtensionPreferences } from 'resource:///org/gnome/Shell/Extensions/js/extensions/prefs.js';
+
+export default class StrataPreferences extends ExtensionPreferences {
+    fillPreferencesWindow(window) {
+        const settings = this.getSettings();
+
+        window.add(this._buildGeneralPage(settings));
+        window.add(this._buildPrivacyPage(settings));
+    }
+
+    // -------------------------------------------------------------------------
+    // General page
+    // -------------------------------------------------------------------------
+
+    _buildGeneralPage(settings) {
+        const page = new Adw.PreferencesPage({
+            title: 'General',
+            icon_name: 'preferences-system-symbolic',
+        });
+
+        // ── History ──────────────────────────────────────────────────────────
+        const historyGroup = new Adw.PreferencesGroup({ title: 'History' });
+
+        const maxHistoryRow = new Adw.SpinRow({
+            title: 'Maximum items',
+            subtitle: 'All items are searchable and reachable; older are deleted past this limit',
+            adjustment: new Gtk.Adjustment({
+                lower: 50,
+                upper: 2000,
+                step_increment: 10,
+                page_increment: 50,
+            }),
+        });
+        settings.bind('max-history', maxHistoryRow, 'value', Gio.SettingsBindFlags.DEFAULT);
+        historyGroup.add(maxHistoryRow);
+
+        const pageSizeRow = new Adw.SpinRow({
+            title: 'Items per page',
+            subtitle: 'Rows fetched on open and on each scroll-to-bottom',
+            adjustment: new Gtk.Adjustment({
+                lower: 20,
+                upper: 200,
+                step_increment: 10,
+                page_increment: 50,
+            }),
+        });
+        settings.bind('page-size', pageSizeRow, 'value', Gio.SettingsBindFlags.DEFAULT);
+        historyGroup.add(pageSizeRow);
+
+        const maxTextRow = new Adw.SpinRow({
+            title: 'Maximum text size (MB)',
+            subtitle: 'Text payloads larger than this are not stored',
+            adjustment: new Gtk.Adjustment({
+                lower: 1,
+                upper: 100,
+                step_increment: 1,
+                page_increment: 5,
+            }),
+        });
+        settings.bind('max-text-mb', maxTextRow, 'value', Gio.SettingsBindFlags.DEFAULT);
+        historyGroup.add(maxTextRow);
+
+        const maxImageRow = new Adw.SpinRow({
+            title: 'Maximum image size (MB)',
+            subtitle: 'Image payloads larger than this are not stored',
+            adjustment: new Gtk.Adjustment({
+                lower: 1,
+                upper: 100,
+                step_increment: 1,
+                page_increment: 5,
+            }),
+        });
+        settings.bind('max-image-mb', maxImageRow, 'value', Gio.SettingsBindFlags.DEFAULT);
+        historyGroup.add(maxImageRow);
+
+        page.add(historyGroup);
+
+        // ── Appearance ───────────────────────────────────────────────────────
+        const appearanceGroup = new Adw.PreferencesGroup({ title: 'Appearance' });
+
+        const panelWidthRow = new Adw.SpinRow({
+            title: 'Panel width',
+            subtitle: 'Width of the clipboard panel in pixels',
+            adjustment: new Gtk.Adjustment({
+                lower: 200,
+                upper: 1200,
+                step_increment: 10,
+                page_increment: 50,
+            }),
+        });
+        settings.bind('panel-width', panelWidthRow, 'value', Gio.SettingsBindFlags.DEFAULT);
+        appearanceGroup.add(panelWidthRow);
+
+        const panelMaxHeightRow = new Adw.SpinRow({
+            title: 'Panel max height',
+            subtitle: 'Maximum height before the list scrolls',
+            adjustment: new Gtk.Adjustment({
+                lower: 200,
+                upper: 1200,
+                step_increment: 10,
+                page_increment: 50,
+            }),
+        });
+        settings.bind('panel-max-height', panelMaxHeightRow, 'value', Gio.SettingsBindFlags.DEFAULT);
+        appearanceGroup.add(panelMaxHeightRow);
+
+        const moveToTopRow = new Adw.SwitchRow({
+            title: 'Move activated item to top',
+            subtitle: 'Selecting an item moves it to the top of the list',
+        });
+        settings.bind('move-activated-to-top', moveToTopRow, 'active', Gio.SettingsBindFlags.DEFAULT);
+        appearanceGroup.add(moveToTopRow);
+
+        const positions = [
+            { id: 'top-center',    label: 'Top center'    },
+            { id: 'top-left',      label: 'Top left'      },
+            { id: 'top-right',     label: 'Top right'     },
+            { id: 'center',        label: 'Center'        },
+            { id: 'bottom-center', label: 'Bottom center' },
+            { id: 'bottom-left',   label: 'Bottom left'   },
+            { id: 'bottom-right',  label: 'Bottom right'  },
+        ];
+
+        const positionRow = new Adw.ComboRow({
+            title: 'Panel position',
+            subtitle: 'Where the clipboard panel appears on screen',
+            model: Gtk.StringList.new(positions.map(p => p.label)),
+        });
+
+        const currentPos = settings.get_string('panel-position');
+        const currentIdx = positions.findIndex(p => p.id === currentPos);
+        positionRow.selected = currentIdx >= 0 ? currentIdx : 0;
+
+        positionRow.connect('notify::selected', () => {
+            settings.set_string('panel-position', positions[positionRow.selected].id);
+        });
+        settings.connect('changed::panel-position', () => {
+            const idx = positions.findIndex(p => p.id === settings.get_string('panel-position'));
+            if (idx >= 0 && positionRow.selected !== idx)
+                positionRow.selected = idx;
+        });
+        appearanceGroup.add(positionRow);
+
+        page.add(appearanceGroup);
+
+        // ── Keyboard ─────────────────────────────────────────────────────────
+        const kbGroup = new Adw.PreferencesGroup({ title: 'Keyboard' });
+
+        const shortcutRow = new Adw.ActionRow({
+            title: 'Open Strata',
+            subtitle: 'Click to change the keyboard shortcut',
+            activatable: true,
+        });
+        const shortcutLabel = new Gtk.ShortcutLabel({
+            valign: Gtk.Align.CENTER,
+            disabled_text: 'Disabled',
+        });
+        const updateShortcutLabel = () => {
+            const shortcuts = settings.get_strv('keyboard-shortcut');
+            shortcutLabel.accelerator = shortcuts[0] ?? '';
+        };
+        updateShortcutLabel();
+        settings.connect('changed::keyboard-shortcut', updateShortcutLabel);
+        shortcutRow.add_suffix(shortcutLabel);
+        shortcutRow.connect('activated', () => {
+            this._showShortcutDialog(shortcutRow.get_root(), settings);
+        });
+        kbGroup.add(shortcutRow);
+        page.add(kbGroup);
+
+        return page;
+    }
+
+    // -------------------------------------------------------------------------
+    // Privacy page
+    // -------------------------------------------------------------------------
+
+    _buildPrivacyPage(settings) {
+        const page = new Adw.PreferencesPage({
+            title: 'Privacy',
+            icon_name: 'security-high-symbolic',
+        });
+
+        const group = new Adw.PreferencesGroup({
+            title: 'App Exclusions',
+            description: 'Items copied while these apps have focus will not be stored in history. Enter a partial app name (case-insensitive).',
+        });
+
+        // We use a StringList model bound to excluded-apps.
+        const model = new Gtk.StringList();
+        const currentApps = settings.get_strv('excluded-apps');
+        for (const app of currentApps)
+            model.append(app);
+
+        /** Sync the StringList back to GSettings. */
+        const saveModel = () => {
+            const apps = [];
+            for (let i = 0; i < model.get_n_items(); i++) {
+                const val = model.get_string(i);
+                if (val?.trim()) apps.push(val.trim());
+            }
+            settings.set_strv('excluded-apps', apps);
+        };
+
+        // Each item in the list: an EditableLabel + Remove button.
+        const listBox = new Gtk.ListBox({
+            selection_mode: Gtk.SelectionMode.NONE,
+            css_classes: ['boxed-list'],
+        });
+
+        const rebuildList = () => {
+            let child = listBox.get_first_child();
+            while (child) {
+                const next = child.get_next_sibling();
+                listBox.remove(child);
+                child = next;
+            }
+            for (let i = 0; i < model.get_n_items(); i++) {
+                const idx = i;
+                const row = new Adw.ActionRow({ activatable: false });
+                const label = new Gtk.EditableLabel({
+                    text: model.get_string(i),
+                    valign: Gtk.Align.CENTER,
+                    hexpand: true,
+                });
+                label.connect('changed', () => {
+                    model.splice(idx, 1, [label.text]);
+                    saveModel();
+                });
+                const removeBtn = new Gtk.Button({
+                    icon_name: 'list-remove-symbolic',
+                    valign: Gtk.Align.CENTER,
+                    css_classes: ['flat', 'destructive-action'],
+                    tooltip_text: 'Remove',
+                });
+                removeBtn.connect('clicked', () => {
+                    model.remove(idx);
+                    saveModel();
+                    rebuildList();
+                });
+                row.add_suffix(label);
+                row.add_suffix(removeBtn);
+                listBox.append(row);
+            }
+
+            // Add-new row.
+            const addRow = new Adw.ActionRow({ activatable: false });
+            const addEntry = new Gtk.Entry({
+                placeholder_text: 'App name…',
+                valign: Gtk.Align.CENTER,
+                hexpand: true,
+            });
+            const addBtn = new Gtk.Button({
+                icon_name: 'list-add-symbolic',
+                valign: Gtk.Align.CENTER,
+                css_classes: ['flat'],
+                tooltip_text: 'Add',
+            });
+            const doAdd = () => {
+                const val = addEntry.text.trim();
+                if (val) {
+                    model.append(val);
+                    saveModel();
+                    rebuildList();
+                }
+            };
+            addBtn.connect('clicked', doAdd);
+            addEntry.connect('activate', doAdd);
+            addRow.add_suffix(addEntry);
+            addRow.add_suffix(addBtn);
+            listBox.append(addRow);
+        };
+
+        rebuildList();
+        group.add(listBox);
+        page.add(group);
+        return page;
+    }
+
+    // -------------------------------------------------------------------------
+    // Keyboard shortcut dialog
+    // -------------------------------------------------------------------------
+
+    _showShortcutDialog(parent, settings) {
+        const dialog = new Adw.MessageDialog({
+            heading: 'Set Keyboard Shortcut',
+            body: 'Press the desired key combination, or Backspace to clear.',
+            transient_for: parent,
+            modal: true,
+        });
+        dialog.add_response('cancel', 'Cancel');
+        dialog.add_response('clear',  'Clear');
+
+        const label = new Gtk.ShortcutLabel({
+            accelerator: settings.get_strv('keyboard-shortcut')[0] ?? '',
+            disabled_text: '(none)',
+            margin_top: 12,
+            margin_bottom: 12,
+            halign: Gtk.Align.CENTER,
+        });
+        dialog.set_extra_child(label);
+
+        const controller = new Gtk.EventControllerKey();
+        controller.connect('key-pressed', (_ctrl, keyval, keycode, state) => {
+            const mods = state & Gtk.accelerator_get_default_mod_mask();
+            if (keyval === Gdk.KEY_BackSpace) {
+                label.accelerator = '';
+                return true;
+            }
+            if (keyval === Gdk.KEY_Escape) {
+                dialog.close();
+                return true;
+            }
+            if (Gtk.accelerator_valid(keyval, mods)) {
+                label.accelerator = Gtk.accelerator_name(keyval, mods);
+                settings.set_strv('keyboard-shortcut',
+                    label.accelerator ? [label.accelerator] : []);
+                dialog.close();
+            }
+            return true;
+        });
+        dialog.add_controller(controller);
+
+        dialog.connect('response', (_d, response) => {
+            if (response === 'clear') {
+                settings.set_strv('keyboard-shortcut', []);
+            }
+            dialog.destroy();
+        });
+
+        dialog.present();
+    }
+}
diff --git a/strata@edu4rdshl.dev/schemas/org.gnome.shell.extensions.strata.gschema.xml b/strata@edu4rdshl.dev/schemas/org.gnome.shell.extensions.strata.gschema.xml
new file mode 100644
index 0000000..ad37c85
--- /dev/null
+++ b/strata@edu4rdshl.dev/schemas/org.gnome.shell.extensions.strata.gschema.xml
@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<schemalist>
+  <schema id="org.gnome.shell.extensions.strata"
+          path="/org/gnome/shell/extensions/strata/">
+
+    <key name="max-history" type="i">
+      <default>200</default>
+      <range min="50" max="2000"/>
+      <summary>Maximum number of clipboard history items to keep</summary>
+      <description>All stored items are searchable (text only) and reachable via scroll. Higher values use more disk space (~30KB per image, ~1KB per text item).</description>
+    </key>
+
+    <key name="max-text-mb" type="i">
+      <default>1</default>
+      <range min="1" max="100"/>
+      <summary>Maximum text clipboard item size (MB)</summary>
+      <description>Text payloads larger than this are not stored.</description>
+    </key>
+
+    <key name="max-image-mb" type="i">
+      <default>5</default>
+      <range min="1" max="100"/>
+      <summary>Maximum image clipboard item size (MB)</summary>
+      <description>Image payloads larger than this are not stored.</description>
+    </key>
+
+    <key name="page-size" type="i">
+      <default>50</default>
+      <range min="20" max="200"/>
+      <summary>Number of items to fetch per history page</summary>
+      <description>The panel loads this many rows on open and again each time the scroll reaches the bottom.</description>
+    </key>
+
+    <key name="keyboard-shortcut" type="as">
+      <default><![CDATA[['<Super><Shift>v']]]></default>
+      <summary>Keyboard shortcut to open the clipboard panel</summary>
+    </key>
+
+    <key name="panel-width" type="i">
+      <default>480</default>
+      <summary>Width of the clipboard panel in pixels</summary>
+    </key>
+
+    <key name="panel-max-height" type="i">
+      <default>600</default>
+      <summary>Maximum height of the clipboard panel in pixels</summary>
+    </key>
+
+    <key name="move-activated-to-top" type="b">
+      <default>true</default>
+      <summary>Move the selected item to the top of the list when activated</summary>
+      <description>When enabled, clicking or pressing Enter on a history item moves it to position 1 in the list.</description>
+    </key>
+
+    <key name="panel-position" type="s">
+      <choices>
+        <choice value="top-center"/>
+        <choice value="top-left"/>
+        <choice value="top-right"/>
+        <choice value="center"/>
+        <choice value="bottom-center"/>
+        <choice value="bottom-left"/>
+        <choice value="bottom-right"/>
+      </choices>
+      <default>'top-center'</default>
+      <summary>Position of the clipboard panel on screen</summary>
+    </key>
+
+    <key name="excluded-apps" type="as">
+      <default><![CDATA[['1password', 'keepassxc', 'keepass', 'gnome-secrets', 'bitwarden', 'dashlane', 'lastpass', 'enpass']]]></default>
+      <summary>App WM class substrings to exclude from clipboard history</summary>
+      <description>Items copied while one of these apps has keyboard focus will not be stored in history. The match is case-insensitive and uses substring matching.</description>
+    </key>
+
+  </schema>
+</schemalist>
diff --git a/strata@edu4rdshl.dev/stylesheet.css b/strata@edu4rdshl.dev/stylesheet.css
new file mode 100644
index 0000000..0808909
--- /dev/null
+++ b/strata@edu4rdshl.dev/stylesheet.css
@@ -0,0 +1,205 @@
+/* Strata clipboard manager stylesheet.
+ *
+ * Performance rule: NO `transition: all`, NO Clutter/CSS animations.
+ * Only background-color transitions on hover (GPU-composited, zero JS).
+ * clip-to-allocation on the scroll view prevents overdraw outside the panel.
+ */
+
+/* ── Panel container ────────────────────────────────────────────────────── */
+.strata-panel {
+    background-color: rgba(30, 30, 30, 0.97);
+    border: 1px solid rgba(255, 255, 255, 0.12);
+    border-radius: 14px;
+    padding: 12px;
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
+    min-width: 360px;
+}
+
+/* ── Header ─────────────────────────────────────────────────────────────── */
+.strata-header {
+    margin-bottom: 8px;
+}
+
+.strata-title {
+    font-size: 1.1em;
+    font-weight: bold;
+    color: rgba(255, 255, 255, 0.9);
+}
+
+.strata-clear-btn {
+    background: transparent;
+    border: 1px solid rgba(255, 255, 255, 0.15);
+    border-radius: 6px;
+    color: rgba(255, 255, 255, 0.55);
+    padding: 3px 10px;
+    font-size: 0.85em;
+    transition: background-color 100ms;
+}
+
+.strata-clear-btn:hover {
+    background-color: rgba(255, 255, 255, 0.08);
+    color: rgba(255, 255, 255, 0.85);
+}
+
+/* ── Search box ─────────────────────────────────────────────────────────── */
+.strata-search {
+    background-color: rgba(255, 255, 255, 0.07);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    border-radius: 8px;
+    color: rgba(255, 255, 255, 0.9);
+    padding: 6px 10px;
+    margin-bottom: 8px;
+    caret-color: rgba(255, 255, 255, 0.8);
+}
+
+.strata-search:focus {
+    border-color: rgba(99, 163, 255, 0.6);
+    background-color: rgba(255, 255, 255, 0.10);
+}
+
+/* ── Scroll view ────────────────────────────────────────────────────────── */
+.strata-scroll {
+    clip-to-allocation: true;
+}
+
+.strata-item-list {
+    spacing: 2px;
+}
+
+/* ── Clipboard item ─────────────────────────────────────────────────────── */
+.strata-item {
+    border-radius: 8px;
+    background-color: transparent;
+    padding: 0;
+    border: 1px solid transparent;
+    transition: background-color 100ms;
+}
+
+.strata-item:hover,
+.strata-item-hovered {
+    background-color: rgba(80, 140, 255, 0.18);
+    border-color: rgba(80, 140, 255, 0.45);
+}
+
+/* Keyboard-focused item - clearly distinct from hover with accent blue.
+ * Both :focus (CSS pseudo) and .strata-item-focused (JS-added class) are used
+ * for belt-and-suspenders reliability across GNOME Shell versions. */
+.strata-item:focus,
+.strata-item-focused {
+    background-color: rgba(80, 140, 255, 0.18);
+    border-color: rgba(80, 140, 255, 0.60);
+}
+
+.strata-item:hover:focus,
+.strata-item-focused.strata-item-hovered {
+    background-color: rgba(80, 140, 255, 0.28);
+    border-color: rgba(80, 140, 255, 0.70);
+}
+
+/* Bold the main text label when the item is focused.
+ * Also reinforced via JS key-focus-in signal in clipboardItem.js. */
+.strata-item:focus .strata-item-text,
+.strata-item-focused .strata-item-text {
+    font-weight: bold;
+    color: rgba(255, 255, 255, 1.0);
+}
+
+/* Active item - the most recently copied entry.
+ * Warm amber accent so it stands out from hover (white) and focus (blue). */
+.strata-item-active {
+    background-color: rgba(255, 200, 80, 0.14);
+    border-color: rgba(255, 200, 80, 0.45);
+}
+
+.strata-item-active .strata-item-text {
+    color: rgba(255, 235, 160, 1.0);
+}
+
+.strata-item-active.strata-item-hovered {
+    background-color: rgba(255, 200, 80, 0.22);
+}
+
+/* Blue focus wins over amber active when navigating via keyboard. */
+.strata-item-active.strata-item-focused,
+.strata-item-active:focus {
+    background-color: rgba(80, 140, 255, 0.22);
+    border-color: rgba(80, 140, 255, 0.60);
+}
+
+.strata-item-active.strata-item-focused .strata-item-text,
+.strata-item-active:focus .strata-item-text {
+    font-weight: bold;
+    color: rgba(255, 255, 255, 1.0);
+}
+
+.strata-item:active {
+    background-color: rgba(255, 255, 255, 0.14);
+}
+
+.strata-item-row {
+    padding: 8px 10px;
+    spacing: 10px;
+}
+
+/* ── Item icon ──────────────────────────────────────────────────────────── */
+.strata-item-icon {
+    opacity: 0.6;
+    min-width: 20px;
+}
+
+/* ── Image thumbnail ────────────────────────────────────────────────────── */
+.strata-item-thumb {
+    border-radius: 4px;
+    border: 1px solid rgba(255, 255, 255, 0.1);
+}
+
+/* ── Color swatch ───────────────────────────────────────────────────────── */
+.strata-item-swatch {
+    /* Inline style used for actual color - only shape/border set here. */
+    min-width: 24px;
+    min-height: 24px;
+    border-radius: 4px;
+}
+
+/* ── Text content ───────────────────────────────────────────────────────── */
+.strata-item-content {
+    /* spacing between main and sub label */
+    spacing: 2px;
+}
+
+.strata-item-text {
+    color: rgba(255, 255, 255, 0.90);
+    font-size: 0.95em;
+}
+
+.strata-item-url {
+    color: rgba(99, 163, 255, 0.9);
+}
+
+.strata-item-subtext {
+    color: rgba(255, 255, 255, 0.45);
+    font-size: 0.78em;
+}
+
+/* ── Delete button ──────────────────────────────────────────────────────── */
+.strata-item-delete {
+    background: transparent;
+    border: none;
+    color: rgba(255, 255, 255, 0.0);
+    padding: 4px;
+    border-radius: 6px;
+    transition: background-color 100ms, color 100ms;
+}
+
+/* Only show the delete icon on row hover or keyboard focus. */
+.strata-item:hover .strata-item-delete,
+.strata-item:focus .strata-item-delete,
+.strata-item-focused .strata-item-delete,
+.strata-item-hovered .strata-item-delete {
+    color: rgba(255, 80, 80, 0.7);
+}
+
+.strata-item-delete:hover {
+    background-color: rgba(255, 80, 80, 0.15);
+    color: rgba(255, 80, 80, 1.0);
+}
diff --git a/strata@edu4rdshl.dev/ui/clipboardItem.js b/strata@edu4rdshl.dev/ui/clipboardItem.js
new file mode 100644
index 0000000..01a2b0f
--- /dev/null
+++ b/strata@edu4rdshl.dev/ui/clipboardItem.js
@@ -0,0 +1,267 @@
+/* clipboardItem.js - row widget for the clipboard list. */
+
+import GObject from 'gi://GObject';
+import GLib from 'gi://GLib';
+import St from 'gi://St';
+import Clutter from 'gi://Clutter';
+import Gio from 'gi://Gio';
+
+const TEXT_PREVIEW_LEN = 140;
+const THUMB_SIZE = 48;
+
+const ICON_BY_MIME = {
+    'text/uri-list': 'emblem-web-symbolic',
+    'text/html':     'text-html-symbolic',
+    'image/':        'image-x-generic-symbolic',
+};
+
+function iconForMime(mimeType) {
+    for (const [prefix, icon] of Object.entries(ICON_BY_MIME)) {
+        if (mimeType.startsWith(prefix)) return icon;
+    }
+    return 'edit-copy-symbolic';
+}
+
+/** Detect if a string looks like a URL. */
+function isUrl(text) {
+    return /^https?:\/\/.+/i.test(text.trim());
+}
+
+/** Detect if a string looks like a CSS/hex color. */
+function isColor(text) {
+    return /^#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$/.test(text.trim());
+}
+
+export const ClipboardItem = GObject.registerClass({
+    Signals: {
+        'activate': {},
+        'delete':   {},
+    },
+}, class ClipboardItem extends St.Button {
+    _init(id, mimeType, preview, opts = {}) {
+        super._init({
+            style_class: 'strata-item',
+            x_expand: true,
+            can_focus: true,
+            reactive: true,
+        });
+
+        this._id = id;
+        this._mimeType = mimeType;
+        /** D-Bus proxy used for lazy thumbnail fetch. */
+        this._proxy = opts.proxy ?? null;
+        /** Optional shared LRU cache (Map<id, string filePath>) - populated on first fetch. */
+        this._thumbCache = opts.thumbCache ?? null;
+        /** Stored on the actor so panel.js can filter by it. */
+        this.actor = this;
+        this._strataPreview = mimeType.startsWith('image/') ? '' : preview;
+
+        const row = new St.BoxLayout({
+            style_class: 'strata-item-row',
+            x_expand: true,
+        });
+
+        // Left: icon or image thumbnail
+        row.add_child(this._buildLeading(mimeType, preview));
+
+        // Center: text preview
+        row.add_child(this._buildContent(mimeType, preview));
+
+        // Right: delete button
+        const deleteBtn = new St.Button({
+            style_class: 'strata-item-delete',
+            icon_name: 'edit-delete-symbolic',
+            y_align: Clutter.ActorAlign.CENTER,
+        });
+        deleteBtn.connect('clicked', () => {
+            this.emit('delete');
+            return Clutter.EVENT_STOP;
+        });
+        row.add_child(deleteBtn);
+
+        this.set_child(row);
+        this.connect('clicked', () => this.emit('activate'));
+
+        // Make the item text bold when keyboard-focused so the selected item
+        // is immediately obvious during arrow-key navigation.
+        // We add/remove an explicit style class because CSS :focus pseudo-class
+        // can be unreliable in GNOME Shell extensions.
+        this.connect('key-focus-in', () => {
+            this.add_style_class_name('strata-item-focused');
+            if (this._mainLabel)
+                this._mainLabel.style = 'font-weight: bold; color: rgba(255, 255, 255, 1.0);';
+        });
+        this.connect('key-focus-out', () => {
+            this.remove_style_class_name('strata-item-focused');
+            if (this._mainLabel)
+                this._mainLabel.style = null;
+        });
+    }
+
+    _buildLeading(mimeType, preview) {
+        if (mimeType.startsWith('image/')) {
+            return this._buildThumbnail(this._id);
+        }
+        if (isColor(preview)) {
+            return this._buildColorSwatch(preview);
+        }
+        const icon = new St.Icon({
+            icon_name: iconForMime(mimeType),
+            icon_size: 20,
+            style_class: 'strata-item-icon',
+            y_align: Clutter.ActorAlign.CENTER,
+        });
+        return icon;
+    }
+
+    /** Build an image thumbnail container.
+     *  - If already in shared cache, apply immediately.
+     *  - Else fetch via GetThumbnailRemote, write to ~/.cache/strata/thumbnails/{id}.png,
+     *    then apply. The decode happens off-thread (CSS background-image loader). */
+    _buildThumbnail(id) {
+        const container = new St.Widget({
+            width: THUMB_SIZE,
+            height: THUMB_SIZE,
+            style_class: 'strata-item-thumb',
+            y_align: Clutter.ActorAlign.CENTER,
+        });
+
+        const cacheDir = `${GLib.get_user_cache_dir()}/strata/thumbnails`;
+        const cachePath = `${cacheDir}/${id}.png`;
+        const fileUri = `file://${cachePath}`;
+
+        const applyStyle = () => {
+            try {
+                container.style = `background-image: url("${fileUri}"); background-size: cover; background-repeat: no-repeat;`;
+            } catch (_) { /* container was destroyed mid-flight */ }
+        };
+
+        try {
+            // Fast path: already cached this session.
+            if (this._thumbCache?.has(id)) {
+                applyStyle();
+                return container;
+            }
+            // Second fast path: file exists on disk from a previous session.
+            if (GLib.file_test(cachePath, GLib.FileTest.EXISTS)) {
+                this._thumbCache?.set(id, cachePath);
+                applyStyle();
+                return container;
+            }
+            // Slow path: ask the daemon for the bytes, then write file async.
+            GLib.mkdir_with_parents(cacheDir, 0o755);
+            if (!this._proxy) {
+                this._fallbackIcon(container);
+                return container;
+            }
+            this._proxy.GetThumbnailRemote(id, ([bytes]) => {
+                try {
+                    if (!container.get_parent()) return; // destroyed
+                    if (!bytes || bytes.length === 0) {
+                        this._fallbackIcon(container);
+                        return;
+                    }
+                    const file = Gio.File.new_for_path(cachePath);
+                    file.replace_contents_bytes_async(
+                        new GLib.Bytes(bytes),
+                        null,
+                        false,
+                        Gio.FileCreateFlags.NONE,
+                        null,
+                        (_f, result) => {
+                            try {
+                                _f.replace_contents_finish(result);
+                                this._thumbCache?.set(id, cachePath);
+                                applyStyle();
+                            } catch (e) {
+                                console.error('[Strata] Thumbnail write error:', e);
+                                this._fallbackIcon(container);
+                            }
+                        }
+                    );
+                } catch (e) {
+                    console.error('[Strata] Thumbnail fetch handler error:', e);
+                    this._fallbackIcon(container);
+                }
+            });
+        } catch (e) {
+            console.error('[Strata] Thumbnail render error:', e);
+            this._fallbackIcon(container);
+        }
+        return container;
+    }
+
+    _fallbackIcon(container) {
+        if (container.get_n_children() > 0) return;
+        try {
+            const icon = new St.Icon({
+                icon_name: 'image-x-generic-symbolic',
+                icon_size: 20,
+                y_align: Clutter.ActorAlign.CENTER,
+                x_align: Clutter.ActorAlign.CENTER,
+            });
+            container.add_child(icon);
+        } catch (_) {}
+    }
+
+    _buildColorSwatch(hex) {
+        return new St.Widget({
+            width: 24,
+            height: 24,
+            style: `background-color: ${hex}; border-radius: 4px; border: 1px solid rgba(0,0,0,0.2);`,
+            style_class: 'strata-item-swatch',
+            y_align: Clutter.ActorAlign.CENTER,
+        });
+    }
+
+    _buildContent(mimeType, preview) {
+        preview = preview ?? '';
+        const box = new St.BoxLayout({
+            vertical: true,
+            x_expand: true,
+            style_class: 'strata-item-content',
+        });
+
+        let mainText = '';
+        let subText  = '';
+
+        if (mimeType.startsWith('image/')) {
+            mainText = mimeType === 'image/png' ? 'PNG image' : 'Image';
+        } else if (isUrl(preview)) {
+            mainText = preview.trim();
+            try {
+                subText = new URL(preview.trim()).hostname;
+            } catch (_) {}
+        } else if (isColor(preview)) {
+            mainText = preview.trim().toUpperCase();
+            subText  = 'Color';
+        } else {
+            const trimmed = preview.replace(/\s+/g, ' ').trim();
+            mainText = trimmed.length > TEXT_PREVIEW_LEN
+                ? trimmed.slice(0, TEXT_PREVIEW_LEN) + '…'
+                : trimmed;
+        }
+
+        const labelMain = new St.Label({
+            text: mainText || '(empty)',
+            style_class: `strata-item-text${isUrl(preview) ? ' strata-item-url' : ''}`,
+            x_expand: true,
+            y_align: Clutter.ActorAlign.CENTER,
+        });
+        labelMain.clutter_text.line_wrap = false;
+        labelMain.clutter_text.ellipsize = 3; // PANGO_ELLIPSIZE_END
+        this._mainLabel = labelMain; // held for key-focus bold styling
+        box.add_child(labelMain);
+
+        if (subText) {
+            const labelSub = new St.Label({
+                text: subText,
+                style_class: 'strata-item-subtext',
+                x_expand: true,
+            });
+            box.add_child(labelSub);
+        }
+
+        return box;
+    }
+});
diff --git a/strata@edu4rdshl.dev/ui/panel.js b/strata@edu4rdshl.dev/ui/panel.js
new file mode 100644
index 0000000..82d6818
--- /dev/null
+++ b/strata@edu4rdshl.dev/ui/panel.js
@@ -0,0 +1,669 @@
+/* panel.js - Strata clipboard popup panel. */
+
+import GLib from 'gi://GLib';
+import St from 'gi://St';
+import Clutter from 'gi://Clutter';
+import Meta from 'gi://Meta';
+import Shell from 'gi://Shell';
+
+import * as Main from 'resource:///org/gnome/shell/ui/main.js';
+import { ClipboardItem } from './clipboardItem.js';
+
+const SEARCH_LIMIT = 500;
+const SEARCH_DEBOUNCE_MS = 150;
+const LOAD_MORE_THRESHOLD = 200;
+
+export class StrataPanel {
+    constructor(proxy, settings, indicator = null) {
+        this._proxy = proxy;
+        this._settings = settings;
+        this._indicator = indicator; // PanelMenu.Button - used to avoid toggle-reopen race
+        this._pageSize = settings.get_int('page-size');
+        this._pageSizeChangedId = settings.connect('changed::page-size',
+            () => { this._pageSize = settings.get_int('page-size'); });
+        /** @type {{ id: string, mimeType: string, preview: string }[]} */
+        this._items = [];
+        /** @type {Map<string, ClipboardItem>} id → widget */
+        this._widgets = new Map();
+        /** @type {Map<string, string>} id → cache file path (shared across widget lifetimes) */
+        this._thumbCache = new Map();
+        /** Pagination state for the non-search view. */
+        this._loadedOffset = 0;          // how many items we've already pulled
+        this._hasMore = true;            // false once daemon returns < PAGE_SIZE
+        this._loadingMore = false;       // re-entrancy guard for scroll-driven loads
+        /** Search state. */
+        this._searchQuery = '';          // current search string ('' = no search)
+        this._searchDebounceId = null;   // pending GLib timeout for debounce
+        this._searchEpoch = 0;           // monotonic counter to discard stale search responses
+
+        this._visible = false;
+        this._grab = null;        // Clutter.Grab from Main.pushModal
+        this._hoveredWidget = null; // currently mouse-hovered ClipboardItem
+        this._activeWidget = null;  // most recently copied item
+
+        this._buildUI();
+        // Trigger the initial load as soon as the daemon owns its bus name.
+        // At extension boot the daemon may still be starting (its D-Bus name
+        // not yet owned); the proxy fires notify::g-name-owner when that
+        // changes, so we listen for the first transition to a non-null owner
+        // and only then issue GetHistory. If the daemon is already up, the
+        // owner is already set and we load immediately.
+        this._tryInitialLoad();
+        this._nameOwnerId = this._proxy.connect('notify::g-name-owner',
+            () => this._tryInitialLoad());
+    }
+
+    _tryInitialLoad() {
+        if (this._initialLoaded) return;
+        if (!this._proxy.g_name_owner) return;
+        this._initialLoaded = true;
+        this._loadHistory(0, this._pageSize).catch(e =>
+            console.error('[Strata] initial _loadHistory failed:', e));
+    }
+
+
+    _buildUI() {
+        // Overlay container - sits above all windows.
+        this._overlay = new St.Widget({
+            layout_manager: new Clutter.FixedLayout(),
+            visible: false,
+            reactive: true,
+        });
+        Main.layoutManager.addChrome(this._overlay);
+
+        // Close when clicking outside the panel box.
+        // With pushModal active, ALL pointer events are delivered to _overlay,
+        // so this handler sees every click on screen.
+        this._overlay.connect('button-press-event', (_actor, event) => {
+            const [cx, cy] = event.get_coords();
+            const [bx, by] = this._box.get_transformed_position();
+            const [bw, bh] = this._box.get_transformed_size();
+            if (cx >= bx && cx <= bx + bw && cy >= by && cy <= by + bh)
+                return Clutter.EVENT_PROPAGATE;
+            this.close();
+            return Clutter.EVENT_STOP;
+        });
+
+        // pushModal intercepts all motion events at the overlay level, so CSS
+        // :hover never fires on child actors. Manually track which item is
+        // under the cursor and toggle the JS-driven 'strata-item-hovered' class.
+        this._overlay.connect('motion-event', (_actor, event) => {
+            const [cx, cy] = event.get_coords();
+            let found = null;
+            for (const widget of this._widgets.values()) {
+                if (!widget.visible) continue;
+                const [wx, wy] = widget.get_transformed_position();
+                const [ww, wh] = widget.get_transformed_size();
+                if (cx >= wx && cx <= wx + ww && cy >= wy && cy <= wy + wh) {
+                    found = widget;
+                    break;
+                }
+            }
+            if (found !== this._hoveredWidget) {
+                this._hoveredWidget?.remove_style_class_name('strata-item-hovered');
+                this._hoveredWidget = found;
+                found?.add_style_class_name('strata-item-hovered');
+            }
+            return Clutter.EVENT_PROPAGATE;
+        });
+
+        this._overlay.connect('leave-event', () => {
+            this._hoveredWidget?.remove_style_class_name('strata-item-hovered');
+            this._hoveredWidget = null;
+            return Clutter.EVENT_PROPAGATE;
+        });
+
+        // Panel box
+        this._box = new St.BoxLayout({
+            style_class: 'strata-panel',
+            vertical: true,
+            reactive: true,
+        });
+
+        // Header row: title + clear button
+        const header = new St.BoxLayout({
+            style_class: 'strata-header',
+            x_expand: true,
+        });
+        const title = new St.Label({
+            text: 'Clipboard',
+            style_class: 'strata-title',
+            x_expand: true,
+            y_align: Clutter.ActorAlign.CENTER,
+        });
+        const clearBtn = new St.Button({
+            label: 'Clear all',
+            style_class: 'strata-clear-btn',
+            y_align: Clutter.ActorAlign.CENTER,
+        });
+        clearBtn.connect('clicked', () => this._clearAll());
+        header.add_child(title);
+        header.add_child(clearBtn);
+
+        // Search box
+        this._searchEntry = new St.Entry({
+            hint_text: 'Search…',
+            style_class: 'strata-search',
+            x_expand: true,
+            can_focus: true,
+        });
+        this._searchEntry.get_clutter_text().connect('text-changed', () => {
+            this._scheduleSearch(this._searchEntry.get_text());
+        });
+        // Down arrow from search box moves focus to the first item.
+        this._searchEntry.get_clutter_text().connect('key-press-event', (_actor, event) => {
+            if (event.get_key_symbol() === Clutter.KEY_Down) {
+                this._focusItem(0);
+                return Clutter.EVENT_STOP;
+            }
+            return Clutter.EVENT_PROPAGATE;
+        });
+
+        // Item list
+        this._scrollView = new St.ScrollView({
+            style_class: 'strata-scroll',
+            x_expand: true,
+            y_expand: true,
+            overlay_scrollbars: true,
+        });
+        this._itemList = new St.BoxLayout({
+            style_class: 'strata-item-list',
+            vertical: true,
+            x_expand: true,
+        });
+        this._scrollView.set_child(this._itemList);
+
+        // Load more items when scrolled near the bottom.
+        const vadj = this._scrollView.get_vadjustment();
+        if (vadj) {
+            vadj.connect('notify::value', () => this._maybeLoadMore());
+            // Also re-check when the list grows (a new page just appended).
+            vadj.connect('notify::upper', () => this._maybeLoadMore());
+        }
+
+        // Assemble
+        this._box.add_child(header);
+        this._box.add_child(this._searchEntry);
+        this._box.add_child(this._scrollView);
+        this._overlay.add_child(this._box);
+
+        // ESC to close
+        this._overlay.connect('key-press-event', (_actor, event) => {
+            if (event.get_key_symbol() === Clutter.KEY_Escape) {
+                this.close();
+                return Clutter.EVENT_STOP;
+            }
+            return Clutter.EVENT_PROPAGATE;
+        });
+    }
+
+
+    toggle() {
+        this._visible ? this.close() : this.open();
+    }
+
+    open() {
+        if (this._visible) return;
+        this._visible = true;
+        this._overlay.show();
+        this._positionPanel();
+        // Re-position after one frame so bottom/center use the fully allocated height.
+        GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => {
+            if (this._visible) this._positionPanel();
+            return GLib.SOURCE_REMOVE;
+        });
+
+        // pushModal grabs ALL input and delivers it to _overlay - this is the
+        // proper GNOME Shell pattern for "click outside to close" dialogs.
+        this._grab = Main.pushModal(this._overlay, {
+            actionMode: Shell.ActionMode.POPUP,
+        });
+
+        this._searchEntry.set_text('');
+        // Reset to non-search view - but DON'T reload; history may already be populated.
+        this._searchQuery = '';
+        // If the initial history load failed (e.g. daemon wasn't ready at startup),
+        // retry now that the user is asking to see the list.
+        if (this._items.length === 0 && this._loadedOffset === 0 && this._hasMore) {
+            this._loadHistory(0, this._pageSize).catch(e =>
+                console.error('[Strata] open: history reload failed:', e));
+        }
+        global.stage.set_key_focus(this._searchEntry.get_clutter_text());
+    }
+
+    close() {
+        if (!this._visible) return;
+        this._visible = false;
+        // Clear hover state since the panel is closing.
+        this._hoveredWidget?.remove_style_class_name('strata-item-hovered');
+        this._hoveredWidget = null;
+        if (this._grab) {
+            Main.popModal(this._grab);
+            this._grab = null;
+        }
+        this._overlay.hide();
+    }
+
+    /** Prepend a newly added item. Wrapped in try/catch so one bad item can't
+     *  break subsequent additions. */
+    prependItem(id, mimeType, preview) {
+        try {
+            this._items.unshift({ id, mimeType, preview });
+            this._loadedOffset += 1;
+
+            if (this._widgets.has(id)) {
+                this._widgets.get(id)?.destroy();
+                this._widgets.delete(id);
+            }
+
+            // While searching, only render if the new item matches the active query.
+            if (this._searchQuery && !this._matchesSearch(preview, mimeType)) {
+                return;
+            }
+
+            const widget = this._makeItemWidget(id, mimeType, preview);
+            this._widgets.set(id, widget);
+            this._itemList.insert_child_at_index(widget.actor, 0);
+            this._setActiveWidget(widget);
+        } catch (e) {
+            console.error(`[Strata] prependItem failed for id=${id} mime=${mimeType}:`, e);
+            this._items = this._items.filter(i => i.id !== id);
+        }
+    }
+
+    // Substring match used for newly-arrived items while a search is active.
+    // Approximates FTS5 prefix match until the next debounced search refresh.
+    _matchesSearch(preview, mimeType) {
+        if (mimeType?.startsWith('image/')) return false;
+        if (!preview) return false;
+        const haystack = preview.toLowerCase();
+        return this._searchQuery.toLowerCase().split(/\s+/)
+            .filter(Boolean).every(tok => haystack.includes(tok));
+    }
+
+    removeItem(id) {
+        this._items = this._items.filter(i => i.id !== id);
+        const widget = this._widgets.get(id);
+        if (widget) {
+            const wasActive  = widget === this._activeWidget;
+            const wasHovered = widget === this._hoveredWidget;
+            if (wasActive)  this._activeWidget  = null;
+            if (wasHovered) this._hoveredWidget = null;
+            widget.destroy();
+            this._widgets.delete(id);
+            // Re-assign active to the new first visible item.
+            if (wasActive) {
+                const first = this._getVisibleItems()[0];
+                if (first) this._setActiveWidget(first);
+            }
+        }
+    }
+
+    clearItems() {
+        this._items = [];
+        this._hoveredWidget = null;
+        this._activeWidget  = null;
+        this._widgets.forEach(w => w.destroy());
+        this._widgets.clear();
+        this._itemList.destroy_all_children();
+    }
+
+    destroy() {
+        if (this._pageSizeChangedId) {
+            this._settings.disconnect(this._pageSizeChangedId);
+            this._pageSizeChangedId = 0;
+        }
+        if (this._nameOwnerId) {
+            this._proxy.disconnect(this._nameOwnerId);
+            this._nameOwnerId = 0;
+        }
+        if (this._initialLoadId) {
+            GLib.Source.remove(this._initialLoadId);
+            this._initialLoadId = null;
+        }
+        if (this._searchDebounceId) {
+            GLib.Source.remove(this._searchDebounceId);
+            this._searchDebounceId = null;
+        }
+        this.close();
+        this.clearItems();
+        Main.layoutManager.removeChrome(this._overlay);
+        this._overlay.destroy();
+        this._overlay = null;
+    }
+
+
+    async _loadHistory(offset, limit) {
+        if (!this._overlay) return 0;
+        try {
+            const [json] = await this._proxy.GetHistoryAsync(offset, limit);
+            if (!this._overlay) return 0;
+            const items = JSON.parse(json);
+            const BATCH = 20;
+            for (let i = 0; i < items.length; i += BATCH) {
+                if (!this._overlay) return items.length;
+                await new Promise(resolve =>
+                    GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => {
+                        const end = Math.min(i + BATCH, items.length);
+                        for (let j = i; j < end; j++) this._appendItemFromMeta(items[j]);
+                        resolve();
+                        return GLib.SOURCE_REMOVE;
+                    })
+                );
+            }
+            this._loadedOffset = offset + items.length;
+            this._hasMore = items.length >= limit;
+            if (offset === 0 && items.length > 0) {
+                const firstWidget = this._widgets.get(items[0].id);
+                if (firstWidget) this._setActiveWidget(firstWidget);
+            }
+            return items.length;
+        } catch (e) {
+            console.error('[Strata] _loadHistory failed:', e);
+            return 0;
+        }
+    }
+
+    _appendItemFromMeta(meta) {
+        try {
+            const id = meta.id;
+            const mimeType = meta.mime_type;
+            const preview = meta.content_text ?? '';
+            if (this._widgets.has(id)) return;
+
+            this._items.push({ id, mimeType, preview });
+            const widget = this._makeItemWidget(id, mimeType, preview);
+            this._widgets.set(id, widget);
+            this._itemList.add_child(widget.actor);
+        } catch (e) {
+            console.error(`[Strata] _appendItemFromMeta failed for id=${meta?.id}:`, e);
+        }
+    }
+
+    _maybeLoadMore() {
+        if (this._searchQuery) return;
+        if (!this._hasMore || this._loadingMore) return;
+        const adj = this._scrollView.get_vadjustment();
+        if (!adj || adj.upper <= adj.page_size) return;
+        const distanceToBottom = adj.upper - (adj.value + adj.page_size);
+        if (distanceToBottom > LOAD_MORE_THRESHOLD) return;
+
+        this._loadingMore = true;
+        this._loadHistory(this._loadedOffset, this._pageSize)
+            .finally(() => { this._loadingMore = false; });
+    }
+
+
+    _makeItemWidget(id, mimeType, preview) {
+        const widget = new ClipboardItem(id, mimeType, preview, {
+            proxy: this._proxy,
+            thumbCache: this._thumbCache,
+        });
+        widget.connect('activate', () => {
+            this._setActiveWidget(widget);
+            if (this._settings?.get_boolean('move-activated-to-top'))
+                this._moveItemToTop(id, widget);
+            this._onItemActivated(id);
+        });
+        widget.connect('delete', () => {
+            this._proxy.DeleteItemRemote(id, () => {});
+        });
+        widget.connect('key-press-event', (_actor, event) => {
+            const sym = event.get_key_symbol();
+            const items = this._getVisibleItems();
+            const idx = items.indexOf(widget);
+            if (sym === Clutter.KEY_Down) {
+                if (idx < items.length - 1) {
+                    global.stage.set_key_focus(items[idx + 1]);
+                    this._ensureVisible(items[idx + 1]);
+                }
+                return Clutter.EVENT_STOP;
+            }
+            if (sym === Clutter.KEY_Up) {
+                if (idx <= 0) {
+                    global.stage.set_key_focus(this._searchEntry.get_clutter_text());
+                } else {
+                    global.stage.set_key_focus(items[idx - 1]);
+                    this._ensureVisible(items[idx - 1]);
+                }
+                return Clutter.EVENT_STOP;
+            }
+            if (sym === Clutter.KEY_Escape) {
+                this.close();
+                return Clutter.EVENT_STOP;
+            }
+            return Clutter.EVENT_PROPAGATE;
+        });
+        return widget;
+    }
+
+    /** Focus the item at visible-list index `idx` (clamped). */
+    _focusItem(idx) {
+        const items = this._getVisibleItems();
+        if (items.length === 0) return;
+        global.stage.set_key_focus(items[Math.max(0, Math.min(idx, items.length - 1))]);
+    }
+
+    /** All currently-visible item actors in order. */
+    _getVisibleItems() {
+        return this._itemList.get_children().filter(c => c.visible);
+    }
+
+    _ensureVisible(widget) {
+        GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => {
+            try {
+                const adj = this._scrollView.get_vadjustment();
+                if (!adj || adj.page_size === 0) return GLib.SOURCE_REMOVE;
+
+                // Allocation box coords share the same space as adj.value.
+                const box = widget.get_allocation_box();
+                const cur = adj.value;
+                const pageSize = adj.page_size;
+
+                if (box.y1 < cur)
+                    adj.value = box.y1;
+                else if (box.y2 > cur + pageSize)
+                    adj.value = box.y2 - pageSize;
+            } catch (e) {
+                console.error('[Strata] ensureVisible error:', e);
+            }
+            return GLib.SOURCE_REMOVE;
+        });
+    }
+
+    async _onItemActivated(id) {
+        try {
+            const [mimeType, contentB64] = await this._proxy.GetItemContentAsync(id);
+            this._writeToClipboard(mimeType, GLib.base64_decode(contentB64));
+        } catch (e) {
+            console.error('[Strata] Paste error:', e);
+        }
+        this.close();
+    }
+
+    _writeToClipboard(mimeType, bytes) {
+        try {
+            if (mimeType.startsWith('text/') || mimeType === 'UTF8_STRING') {
+                const text = new TextDecoder('utf-8').decode(bytes);
+                St.Clipboard.get_default().set_text(St.ClipboardType.CLIPBOARD, text);
+            } else {
+                const source = Meta.SelectionSourceMemory.new(
+                    mimeType,
+                    GLib.Bytes.new(bytes)
+                );
+                global.display.get_selection().set_owner(
+                    Meta.SelectionType.SELECTION_CLIPBOARD,
+                    source
+                );
+            }
+        } catch (e) {
+            console.error('[Strata] Clipboard write error:', e);
+        }
+    }
+
+    async _clearAll() {
+        try {
+            await this._proxy.ClearHistoryAsync();
+        } catch (e) {
+            console.error('[Strata] ClearHistory error:', e);
+        }
+    }
+
+    /** Debounce search box keystrokes; collapse rapid edits into one query. */
+    _scheduleSearch(query) {
+        if (this._searchDebounceId) {
+            GLib.Source.remove(this._searchDebounceId);
+            this._searchDebounceId = null;
+        }
+        const trimmed = (query ?? '').trim();
+        this._searchDebounceId = GLib.timeout_add(
+            GLib.PRIORITY_DEFAULT, SEARCH_DEBOUNCE_MS, () => {
+                this._searchDebounceId = null;
+                this._runSearch(trimmed).catch(e =>
+                    console.error('[Strata] search failed:', e));
+                return GLib.SOURCE_REMOVE;
+            });
+    }
+
+    /** Apply a search query (empty = reset to the recent-history view).
+     *  All state-mutating writes are guarded with an epoch so a fast-cancelled
+     *  search cannot overwrite the results of a newer one. */
+    async _runSearch(query) {
+        const epoch = ++this._searchEpoch;
+        if (!query) {
+            this._searchQuery = '';
+            this._clearListDom();
+            this._items = [];
+            this._loadedOffset = 0;
+            this._hasMore = true;
+            // Don't await: if the user starts a new search mid-load, the epoch
+            // guard inside _appendItemFromMeta's caller would still let stale
+            // rows leak in. So check the epoch before letting any rows in.
+            const ePromise = this._loadHistory(0, this._pageSize);
+            ePromise.then(() => {
+                if (epoch !== this._searchEpoch) {
+                    // A newer search superseded us; nuke whatever we appended.
+                    this._clearListDom();
+                    this._items = [];
+                }
+            }).catch(e => console.error('[Strata] reset-history failed:', e));
+            return;
+        }
+
+        this._searchQuery = query;
+        let json;
+        try {
+            [json] = await this._proxy.SearchHistoryAsync(query, SEARCH_LIMIT);
+        } catch (e) {
+            console.error('[Strata] SearchHistory D-Bus error:', e);
+            return;
+        }
+        if (epoch !== this._searchEpoch || !this._overlay) return; // stale or destroyed
+
+        let results;
+        try {
+            results = JSON.parse(json);
+        } catch (e) {
+            console.error('[Strata] SearchHistory: bad JSON:', e);
+            return;
+        }
+
+        this._clearListDom();
+        this._items = [];
+        // Disable pagination while searching - the search response is already
+        // bounded by SEARCH_LIMIT, scrolling shouldn't pull more.
+        this._hasMore = false;
+        this._loadedOffset = 0;
+
+        const BATCH = 20;
+        for (let i = 0; i < results.length; i += BATCH) {
+            if (epoch !== this._searchEpoch || !this._overlay) return;
+            await new Promise(resolve =>
+                GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => {
+                    const end = Math.min(i + BATCH, results.length);
+                    for (let j = i; j < end; j++) this._appendItemFromMeta(results[j]);
+                    resolve();
+                    return GLib.SOURCE_REMOVE;
+                }));
+        }
+    }
+
+    /** Tear down all rendered item widgets (without touching the data model). */
+    _clearListDom() {
+        this._hoveredWidget = null;
+        this._activeWidget = null;
+        this._widgets.forEach(w => w.destroy());
+        this._widgets.clear();
+        this._itemList.destroy_all_children();
+    }
+
+    _setActiveWidget(widget) {
+        this._activeWidget?.remove_style_class_name('strata-item-active');
+        this._activeWidget = widget ?? null;
+        widget?.add_style_class_name('strata-item-active');
+    }
+
+    _moveItemToTop(id, widget) {
+        // Move data model entry to front.
+        const idx = this._items.findIndex(i => i.id === id);
+        if (idx > 0) {
+            const [entry] = this._items.splice(idx, 1);
+            this._items.unshift(entry);
+        }
+        // Move actor to position 0 in the list.
+        this._itemList.set_child_at_index(widget, 0);
+    }
+
+    _positionPanel() {
+        const monitor = Main.layoutManager.primaryMonitor;
+        if (!monitor) return;
+
+        const PANEL_W = Math.min(
+            this._settings?.get_int('panel-width') ?? 480,
+            monitor.width * 0.9
+        );
+        const MAX_H = Math.min(
+            this._settings?.get_int('panel-max-height') ?? 600,
+            monitor.height * 0.85
+        );
+
+        this._box.set_width(PANEL_W);
+        // Let height shrink to content; cap at MAX_H so the scroll view kicks in
+        // when there are many items.
+        this._box.set_height(-1);
+        this._box.style = `max-height: ${MAX_H}px;`;
+
+        const position = this._settings?.get_string('panel-position') ?? 'top-center';
+        const MARGIN = 16; // px gap from screen edge
+
+        let x, y;
+        // Horizontal
+        if (position.endsWith('left'))
+            x = monitor.x + MARGIN;
+        else if (position.endsWith('right'))
+            x = monitor.x + monitor.width - PANEL_W - MARGIN;
+        else // center
+            x = monitor.x + Math.round((monitor.width - PANEL_W) / 2);
+
+        // Vertical - snap to shell bars so the panel feels native
+        const topBarH = Main.layoutManager.panelBox?.height ?? 32;
+        if (position.startsWith('top')) {
+            y = monitor.y + topBarH + MARGIN;
+        } else {
+            // For bottom/center we need the actual rendered height, not MAX_H.
+            // get_preferred_height(-1) returns [minH, naturalH] synchronously.
+            const [, naturalH] = this._box.get_preferred_height(-1);
+            const actualH = Math.min(naturalH, MAX_H);
+            if (position.startsWith('bottom'))
+                y = monitor.y + monitor.height - actualH - MARGIN;
+            else // center
+                y = monitor.y + Math.round((monitor.height - actualH) / 2);
+        }
+
+        this._box.set_position(Math.round(x), Math.round(y));
+
+        // Overlay fills the screen for click-outside detection.
+        this._overlay.set_position(monitor.x, monitor.y);
+        this._overlay.set_size(monitor.width, monitor.height);
+    }
+}