docs: use JustPerfection's EGO badge for the extensions.gnome.org link

The "Download from extensions.gnome.org" badge is by Javad Rahmatzadeh
(JustPerfection), licensed GPL-3.0. Source:
https://gitlab.gnome.org/jrahmatzadeh/just-perfection/-/blob/main/data/imgs/ego.svg

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install system dependencies
         run: |
@@ -28,7 +28,7 @@ jobs:
           components: rustfmt, clippy
 
       - name: Cache cargo registry
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: |
             ~/.cargo/registry
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install glib-compile-schemas
         run: sudo apt-get update -q && sudo apt-get install -y libglib2.0-bin

.github/workflows/eslint.yml

@@ -0,0 +1,40 @@
+name: ESLint
+
+on:
+  push:
+    branches: [ 'main' ]
+  pull_request:
+    branches: [ 'main' ]
+  schedule:
+    - cron: '33 14 * * 5'
+
+jobs:
+  eslint:
+    name: Run eslint scanning
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      security-events: write
+      # Required for private repositories by github/codeql-action/upload-sarif
+      actions: read
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+
+      - name: Install
+        run: |
+          npm install eslint@^10.0.0 @eslint/js@^10.0.0
+          npm install @microsoft/eslint-formatter-sarif@2.1.7
+
+      - name: Lint
+        run: >
+          npx eslint .
+          --format @microsoft/eslint-formatter-sarif
+          --output-file eslint-results.sarif
+        continue-on-error: true
+
+      - name: Report
+        uses: github/codeql-action/upload-sarif@v4
+        with:
+          sarif_file: eslint-results.sarif
+          wait-for-processing: true

.gitignore

@@ -4,12 +4,18 @@ strata-daemon/target/
 # Bundled binary (no longer shipped - daemon must be installed separately)
 strata@edu4rdshl.dev/bin/
 
-# Screenshots / scratch images
+# Screenshots / scratch images (project assets under assets/ are kept)
 *.png
+!assets/*.png
 
 # External reference code (not part of this project)
 external_sources/
 
+# Node / lint tooling
+node_modules/
+package-lock.json
+*.shell-extension.zip
+
 # Editor / OS
 .vscode/
 .idea/

AGENTS.md

@@ -13,6 +13,13 @@ contrib/systemd/        systemd user service unit for distro packaging
 ARCHITECTURE.md         In-depth design document
 ```
 
+## Upstream guidelines
+
+- EGO review: https://gjs.guide/extensions/review-guidelines/review-guidelines.html
+- GJS D-Bus: https://gjs.guide/guides/gio/dbus.html
+
+The conventions in this file follow both.
+
 ## Core principle
 
 "JS draws, Rust thinks." The extension must never block the GNOME Shell
@@ -101,10 +108,61 @@ CSS files must be added to the `pack` target as `--extra-source` (only
 
 - 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.
+- GJS: route all errors through the `logError(label, err)` helper at the top
+  of `extension.js` and `ui/panel.js`. It prepends `[Strata]` and strips the
+  `GDBus.Error:` prefix from D-Bus errors. Do not call `console.error`
+  directly. Do not use `console.log` for normal flow events; only errors
+  should appear in the journal.
 - 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.
 - Ingest paths are mutually exclusive by environment: on GNOME the monitor cannot bind (Mutter exposes neither data-control protocol) so ingest is GJS `SubmitItem`; on wlroots the built-in monitor is the path.
 - List queries (`get_history_page`, `search_history`) return `content_text` truncated to `PREVIEW_CHARS` via `substr`; full content is served only by `GetItemContent` for paste-back.
+
+## D-Bus client conventions
+
+- Use the `makeProxyWrapper` proxy from `dbus.js`. Do not construct
+  `Gio.DBusProxy` directly elsewhere.
+- Method calls: `*Async` for await-style, `*Remote` for fire-and-forget.
+  Never call a synchronous variant.
+- Signal subscriptions: `this._proxy.connectSignal('Name', handler)` paired
+  with `disconnectSignal(id)` in `_disconnectSignals`. Do not use the
+  low-level `Gio.DBus.session.signal_subscribe`.
+- Monitor `notify::g-name-owner` on the proxy to react to daemon
+  availability (initial load, config re-push after respawn).
+
+## Extension lifecycle (disable cleanup)
+
+Every resource opened while enabled must be released in `disable()` or in a
+helper called from `disable()`. The EGO static analyzer (shexli) flags
+implicit cleanup as a warning, so be explicit:
+
+- Every `obj.connect('signal', ...)` must store its ID; `disable()` must
+  call `obj.disconnect(id)`, even on actors that get `destroy()`ed.
+- Every `GLib.timeout_add(...)` must store its source ID so it can be
+  removed in `disable()` (or in the fire callback for one-shot sources).
+- Every `GLib.idle_add(...)` must go through `this._addIdleSource(callback)`,
+  which tracks the source ID in `_idleSources`. `_clearIdleSources()` flushes
+  pending sources in `disable()`.
+- Every `proxy.connectSignal(...)` must be paired with `disconnectSignal`.
+
+## EGO submission
+
+Before submitting to extensions.gnome.org, pack and run the `shexli` static
+analyzer:
+
+```sh
+make pack
+pip install -U shexli
+shexli strata@edu4rdshl.dev.shell-extension.zip
+```
+
+Address any `warning` or `error` findings. A `manual_review` finding is
+expected for direct `St.Clipboard` access (Strata is a clipboard manager);
+declare it in the long description on the EGO upload form so the reviewer
+doesn't have to guess.
+
+`shell-version` in `metadata.json` must list only Shell versions the
+extension has actually been tested on. Aspirational entries are a known
+rejection cause.

ARCHITECTURE.md

@@ -295,38 +295,24 @@ image.
 
 ## Theming
 
-St's CSS engine has no custom properties (`var()`) and no reliable
-`!important`, so the light theme is not a runtime-generated stylesheet.
-Instead `stylesheet.css` is the dark theme (default, auto-loaded by GNOME),
-and `light.css` carries light overrides with every rule scoped under a
-`.strata-theme-light` ancestor class -- e.g. dark `.strata-panel { ... }` is
-overridden by `.strata-panel.strata-theme-light { ... }`. That scoping makes
-each light rule strictly more specific than its dark counterpart, so it wins
-deterministically regardless of stylesheet load order.
+Light and dark are handled by GNOME Shell's built-in per-variant stylesheet
+loading, not by any code in the extension. When it enables an extension the
+Shell loads `stylesheet-<variant>.css`, where the variant comes from
+`Main.getStyleVariant()` (the shell's own light/dark), and falls back to
+`stylesheet.css`; it reloads that sheet when the color scheme changes.
 
-The switch between themes is a single class. `extension.js` loads `light.css`
-into the St theme context once at `enable()` (and unloads it on `disable()`),
-but loading it changes nothing on screen: its rules are present in the engine
-yet match no actors, because nothing carries `.strata-theme-light` yet. The
-panel resolves the effective theme from the `theme` setting (`auto` consults
-`org.gnome.desktop.interface color-scheme`) and adds or removes that one class
-on its root box. With the class present the more-specific light rules win and
-the panel is light; with it absent only the base dark rules apply. So
-switching is one class toggle on an existing subtree -- instant, off the
-ingest/render hot paths, and needing no reload.
+Strata ships two sheets and no `stylesheet.css`:
 
-`light.css` is loaded exactly once and the theme context's `changed` signal is
-deliberately not used: `load_stylesheet` itself emits `changed`, so reloading
-on it feeds back into itself and hits "too much recursion" (it fired on screen
-unlock, which restyles widgets). The one caveat of loading once is a full
-GNOME Shell *theme* switch (the User Themes extension swapping the whole Shell
-theme), which replaces the theme object and drops every dynamically loaded
-sheet, including `light.css`. After that, light mode falls back to the dark
-base rules until the extension is re-enabled; dark mode is unaffected because
-GNOME re-loads `stylesheet.css` itself. This is rare and recoverable, and far
-preferable to re-subscribing to `changed`. The ordinary light/dark switch
-(including the system Settings light/dark that `auto` follows) is just the
-class toggle and is unaffected.
+- `stylesheet-dark.css` is the full dark theme (the base).
+- `stylesheet-light.css` does `@import url("stylesheet-dark.css")` and then
+  overrides the colors for a light panel. Its rules follow the import, so they
+  win by load order.
+
+This is the structure the built-in `window-list` extension uses. Because the
+variant tracks the *shell* style, the panel matches the shell chrome: a normal
+session prefers dark, so the panel is dark, and it turns light only when the
+shell itself is light (a `prefer-light` color scheme, the Classic session, or
+high contrast). There is no theme setting and no manual stylesheet loading.
 
 ## Wayland clipboard monitor
 

CHANGELOG.md

@@ -6,6 +6,97 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ---
 
+## [0.11.0] - 2026-07-02
+
+The daemon is unchanged from 0.10.0; all changes are in the GNOME Shell extension.
+
+### Changed
+
+- Light and dark styling follows the GNOME Shell style variant via
+  `stylesheet-dark.css` and `stylesheet-light.css`, loaded automatically by the
+  Shell, instead of loading `light.css` into the theme context by hand. The
+  manual theme setting and its preferences row are gone; the panel matches the
+  shell.
+- Signal connections use `connectObject`/`disconnectObject`.
+
+### Fixed
+
+- `disable()` stops the daemon synchronously with `SIGTERM` instead of deferring
+  the kill to a timeout.
+- The daemon-restart timeout is cleared before a new one is scheduled.
+- Removed the `try`/`catch` around `send_signal`, which does not throw.
+
+### Performance
+
+- The thumbnail cache is cleared asynchronously in batches instead of a
+  synchronous enumerate and delete on the compositor thread.
+- The thumbnail path cache is pruned on delete and clear-all.
+- Each row computes its type (image, URL, color) once.
+
+---
+
+## [0.10.0] - 2026-06-25
+
+The daemon is unchanged from 0.9.0; all changes are in the GNOME Shell extension.
+
+### Fixed
+
+- URL items now show their hostname as a subtitle. The old code used the WHATWG
+  `URL` API, which GJS does not provide, so it always threw and the subtitle
+  never appeared. It now uses `GLib.Uri`.
+- The packaged extension was missing `dbus.js`. The extension imports it, but
+  `make pack` did not bundle it, so installing from the packaged zip would
+  fail to load. It is now included.
+
+### Changed
+
+- `ClipboardItem` uses a `constructor()` with an explicit `GTypeName` instead of
+  `_init()`.
+- The error-logging helper lives in a single `util.js` module shared by the
+  extension, panel, and item widget.
+
+### Internal
+
+- Adopted the GJS ESLint style guide: an `eslint.config.js` flat config, an
+  `npm run lint` script, and a GitHub Actions workflow that lints on push and
+  pull requests. The extension passes with no warnings.
+
+---
+
+## [0.9.0] - 2026-06-25
+
+The daemon is unchanged from 0.8.0; all changes are in the GNOME Shell extension.
+
+### Changed
+
+- App exclusion is enforced before a copy is sent to the daemon, instead of
+  storing the item and deleting it afterward. Excluded content no longer
+  reaches the database, and the focused app is checked at copy time.
+- The D-Bus client follows the GJS guide: signals are handled through the proxy
+  (`connectSignal`) and D-Bus errors are stripped of their `GDBus.Error` prefix
+  before logging.
+- `shell-version` declares GNOME Shell 50 only, the version the extension is
+  tested on. Installs on older releases are no longer offered.
+- The daemon-missing notification points to the project page for install
+  instructions.
+
+### Fixed
+
+- The initial history load retries on the next daemon connection if the first
+  fetch fails, instead of leaving the panel empty until it is reopened.
+- The D-Bus proxy callback is ignored when the extension was disabled (or
+  re-enabled) while the proxy was still being created.
+- `disable()` disconnects the panel indicator signal and drops pending idle
+  callbacks, so nothing runs against a torn-down extension.
+
+### Internal
+
+- Extension logging goes through one helper per file. Removed dead fields,
+  stale comments, and leftover narration flagged by the EGO review guidelines
+  and the shexli static analyzer.
+
+---
+
 ## [0.8.0] - 2026-05-26
 
 ### Changed

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
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+
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+you modify it: responsibilities to respect the freedom of others.
+
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+
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Makefile

@@ -37,7 +37,8 @@ install: schemas
 pack: schemas
 	gnome-extensions pack $(EXTENSION_UUID) \
 		--extra-source=ui \
-		--extra-source=light.css \
+		--extra-source=dbus.js \
+		--extra-source=util.js \
 		--force
 	@echo "Packed: $(EXTENSION_UUID).shell-extension.zip"
 

README.md

@@ -1,3 +1,7 @@
+<p align="center">
+  <img src="assets/icon.svg" alt="Strata logo" width="96" height="96">
+</p>
+
 # Strata
 
 A fast, stutter-free clipboard manager for GNOME Shell.
@@ -6,6 +10,83 @@ 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.
 
+<p align="center">
+  <a href="https://extensions.gnome.org/extension/10291/strata/">
+    <img src="assets/ego.svg" width="200" alt="Download from extensions.gnome.org">
+  </a>
+</p>
+
+> **Requires a companion daemon.** Installing from GNOME Extensions is only half
+> the setup. See [Installing the daemon](#installing-the-daemon).
+
+The motivation behind this is explained in the technical blog post [Rethinking the GNOME clipboard issues](https://edu4rdshl.dev/posts/rethinking-the-gnome-clipboard-issues/)
+
+## Features
+
+**Content types.** Strata captures and previews:
+
+- **Text** (UTF-8). When an app offers both rich and plain text, Strata stores
+  the plain text rather than styled HTML.
+- **URLs** are shown link-styled, with the hostname as a subtitle.
+- **Colors**: hex values (`#rgb` / `#rrggbb`) get a color swatch.
+- **Images**: PNG, JPEG, GIF, WebP, BMP, TIFF, ICO, shown as thumbnails.
+  Decoding and resizing happen once, in the daemon, at copy time.
+- **Files**: file-manager copy/cut (URI lists, e.g. from Nautilus).
+
+Unknown MIME types are ignored (a strict allowlist).
+
+**Search.**
+
+- Full-text search over the entire stored history, backed by SQLite FTS5.
+- Prefix matching, diacritic-insensitive (`cafe` matches `café`).
+- Text only; images and binaries are not indexed.
+
+**Appearance.**
+
+- Light and dark styling follows the GNOME Shell automatically, matching the
+  rest of the shell UI.
+- Configurable panel position (top/center/bottom by left/center/right), width,
+  and maximum height.
+- Optional "move an item to the top" when you paste it.
+
+**Performance.**
+
+- All hashing, decoding, storage, search, and thumbnailing run in the Rust
+  daemon, off the compositor's main loop.
+- Lazy loading: the panel loads one page of history at a time and fetches more
+  on scroll; thumbnails are fetched on demand and cached on disk; search
+  renders a page at a time. The full table never sits in memory.
+- Deduplication: copying the same content twice moves the existing entry to the
+  top (blake3 content hash) instead of adding a duplicate.
+
+**Reliability.**
+
+- SQLite in WAL mode with atomic upserts; history survives a crash.
+- The extension supervises the daemon, respawning it with exponential backoff.
+  Only one daemon runs at a time; a second exits rather than contend for the
+  bus name.
+- Configurable history limit (default 200, up to 2000); oldest items are pruned
+  automatically.
+
+**Privacy and safety.**
+
+- Password-manager aware: entries marked sensitive (the
+  `x-kde-passwordManagerHint` used by KeePassXC and others) are never stored.
+- App exclusions: items copied while a listed app has focus are skipped. The
+  default list covers common password managers (1Password, KeePassXC,
+  Bitwarden, and others).
+- Size caps: text and image payloads larger than a configurable limit (1 MB and
+  5 MB by default) are not stored.
+- Never executes clipboard content: no shell exec, no `launch_uri`, no markup
+  parsing; paste-back only writes to the clipboard.
+
+**Controls.**
+
+- Top-bar icon and popup panel, opened with a configurable shortcut (default
+  `Super+Shift+V`).
+- Keyboard navigation (arrow keys, `Esc` to close), click-outside to dismiss,
+  per-row delete, and "Clear all".
+
 ## Architecture
 
 Strata is **two components**, and you need **both** for it to work:
@@ -26,9 +107,35 @@ GNOME Shell (GJS)  ──D-Bus──▶  strata-daemon  ──▶  SQLite (~/.lo
                                        └──▶  thumbnails (~/.cache/strata)
 ```
 
+## Installing the daemon
+
+Strata is two parts: the GNOME Shell extension and a small background daemon
+(`strata-daemon`) that does the storage, search, and thumbnailing. Installing
+the extension from [GNOME Extensions](https://extensions.gnome.org/extension/10291/strata/)
+is only half the setup; **without the daemon the extension does nothing.**
+
+Install the daemon with whichever fits your system:
+
+- **Arch (AUR):** `paru -S strata-daemon` (or `strata-daemon-git` for the latest `main`).
+- **From source** (needs Rust/Cargo 1.74+):
+
+  ```sh
+  git clone https://github.com/Edu4rdSHL/Strata.git
+  cd Strata
+  make install-daemon    # builds and installs to ~/.local/bin
+  ```
+
+  Make sure `~/.local/bin` is in your `$PATH`.
+
+Then log out and back in (Wayland) or `Alt+F2` → `r` (X11). The extension finds
+`strata-daemon` in `$PATH` and starts it automatically; no separate service is
+needed.
+
+For distro packages and the systemd user service, see [Install](#install).
+
 ## 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.
+- GNOME Shell 50. Older releases may work if built from source but are not tested or supported.
 - `strata-daemon` binary in `$PATH` (see Install below)
 - Rust 1.74+ (build only)
 - `glib-compile-schemas` (from `glib2-devel` / `libglib2.0-dev-bin`)
@@ -119,6 +226,19 @@ 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.
 
+## How it looks
+
+A responsive panel that drops down from the top bar and follows the GNOME
+shell's look.
+
+<p align="center">
+  <img src="assets/panel-desktop.png" alt="Strata's clipboard panel open on the GNOME desktop" width="100%">
+</p>
+
+<p align="center">
+  <img src="assets/panel.png" alt="Close-up of the Strata panel: a URL with its hostname, an image thumbnail, color swatches, and text entries" width="400">
+</p>
+
 ## Deeper reading
 
 - [`ARCHITECTURE.md`](ARCHITECTURE.md): design goals, process model,

assets/icon.svg

@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" role="img" aria-label="Strata">
+  <!-- App-icon variant: staggered strata layers on a rounded dark square. -->
+  <rect width="64" height="64" rx="14" fill="#1e1e1e"/>
+  <rect x="10" y="15"   width="34" height="9" rx="3" fill="#62a0ea"/>
+  <rect x="15" y="27.5" width="34" height="9" rx="3" fill="#3584e4"/>
+  <rect x="20" y="40"   width="34" height="9" rx="3" fill="#1a5fb4"/>
+</svg>

assets/logo.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" role="img" aria-label="Strata">
+  <!-- Staggered strata layers (also a clipboard-history stack). -->
+  <rect x="8"  y="13" width="38" height="10" rx="3" fill="#62a0ea"/>
+  <rect x="14" y="27" width="38" height="10" rx="3" fill="#3584e4"/>
+  <rect x="20" y="41" width="38" height="10" rx="3" fill="#1a5fb4"/>
+</svg>

assets/og-card.svg

@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 630" font-family="Liberation Sans, DejaVu Sans, sans-serif">
+  <defs>
+    <linearGradient id="bg" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#232323"/>
+      <stop offset="1" stop-color="#181818"/>
+    </linearGradient>
+  </defs>
+  <rect width="1200" height="630" fill="url(#bg)"/>
+
+  <!-- staggered strata mark, scaled from the 64-unit logo -->
+  <g transform="translate(130,150) scale(5.4)">
+    <rect x="8"  y="13" width="38" height="10" rx="3" fill="#62a0ea"/>
+    <rect x="14" y="27" width="38" height="10" rx="3" fill="#3584e4"/>
+    <rect x="20" y="41" width="38" height="10" rx="3" fill="#1a5fb4"/>
+  </g>
+
+  <!-- wordmark + tagline -->
+  <text x="500" y="305" font-size="140" font-weight="700" fill="#ffffff">Strata</text>
+  <text x="505" y="368" font-size="34" fill="#bcbcbc">Stutter-free clipboard history for GNOME</text>
+  <text x="505" y="414" font-size="29" fill="#6f6f6f">JS draws, Rust thinks.</text>
+</svg>

eslint.config.js

@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: CC0-1.0
+// SPDX-FileCopyrightText: No rights reserved
+
+import js from '@eslint/js';
+
+export default [
+    js.configs.recommended,
+    {
+        languageOptions: {
+            globals: {
+                ARGV: 'readonly',
+                Debugger: 'readonly',
+                GIRepositoryGType: 'readonly',
+                globalThis: 'readonly',
+                imports: 'readonly',
+                Intl: 'readonly',
+                log: 'readonly',
+                logError: 'readonly',
+                pkg: 'readonly',
+                print: 'readonly',
+                printerr: 'readonly',
+                window: 'readonly',
+                TextEncoder: 'readonly',
+                TextDecoder: 'readonly',
+                console: 'readonly',
+                setTimeout: 'readonly',
+                setInterval: 'readonly',
+                clearTimeout: 'readonly',
+                clearInterval: 'readonly',
+                // GNOME Shell Only
+                global: 'readonly',
+                _: 'readonly',
+                C_: 'readonly',
+                N_: 'readonly',
+                ngettext: 'readonly',
+            },
+            parserOptions: {
+                ecmaVersion: 2022,
+                sourceType: 'module',
+            },
+        },
+        rules: {
+            // See: https://eslint.org/docs/latest/rules/#possible-problems
+            'array-callback-return': 'error',
+            'no-await-in-loop': 'error',
+            'no-constant-binary-expression': 'error',
+            'no-constructor-return': 'error',
+            'no-new-native-nonconstructor': 'error',
+            'no-promise-executor-return': 'error',
+            'no-self-compare': 'error',
+            'no-template-curly-in-string': 'error',
+            'no-unmodified-loop-condition': 'error',
+            'no-unreachable-loop': 'error',
+            'no-unused-private-class-members': 'error',
+            'no-use-before-define': [
+                'error',
+                {
+                    functions: false,
+                    classes: true,
+                    variables: true,
+                    allowNamedExports: true,
+                },
+            ],
+            // See: https://eslint.org/docs/latest/rules/#suggestions
+            'block-scoped-var': 'error',
+            'complexity': 'warn',
+            'consistent-return': 'error',
+            'default-param-last': 'error',
+            'eqeqeq': 'error',
+            'no-array-constructor': 'error',
+            'no-caller': 'error',
+            'no-extend-native': 'error',
+            'no-extra-bind': 'error',
+            'no-extra-label': 'error',
+            'no-iterator': 'error',
+            'no-label-var': 'error',
+            'no-loop-func': 'error',
+            'no-multi-assign': 'warn',
+            'no-new-object': 'error',
+            'no-new-wrappers': 'error',
+            'no-proto': 'error',
+            'no-shadow': 'warn',
+            'no-unused-vars': [
+                'error',
+                {
+                    varsIgnorePattern: '^_',
+                    argsIgnorePattern: '^_',
+                },
+            ],
+            'no-var': 'warn',
+            'unicode-bom': 'error',
+            // GJS Restrictions
+            'no-restricted-globals': [
+                'error',
+                {
+                    name: 'Debugger',
+                    message: 'Internal use only',
+                },
+                {
+                    name: 'GIRepositoryGType',
+                    message: 'Internal use only',
+                },
+                {
+                    name: 'log',
+                    message: 'Use console.log()',
+                },
+                {
+                    name: 'logError',
+                    message: 'Use console.warn() or console.error()',
+                },
+            ],
+            'no-restricted-properties': [
+                'error',
+                {
+                    object: 'imports',
+                    property: 'format',
+                    message: 'Use template strings',
+                },
+                {
+                    object: 'pkg',
+                    property: 'initFormat',
+                    message: 'Use template strings',
+                },
+                {
+                    object: 'Lang',
+                    property: 'copyProperties',
+                    message: 'Use Object.assign()',
+                },
+                {
+                    object: 'Lang',
+                    property: 'bind',
+                    message: 'Use arrow notation or Function.prototype.bind()',
+                },
+                {
+                    object: 'Lang',
+                    property: 'Class',
+                    message: 'Use ES6 classes',
+                },
+            ],
+            'no-restricted-syntax': [
+                'error',
+                {
+                    selector: 'MethodDefinition[key.name="_init"] CallExpression[arguments.length<=1][callee.object.type="Super"][callee.property.name="_init"]',
+                    message: 'Use constructor() and super()',
+                },
+            ],
+        },
+    },
+];

package.json

@@ -0,0 +1,14 @@
+{
+  "name": "strata-extension",
+  "version": "0.9.0",
+  "description": "Lint tooling for the Strata GNOME Shell extension",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "lint": "eslint 'strata@edu4rdshl.dev'"
+  },
+  "devDependencies": {
+    "@eslint/js": "^10.0.0",
+    "eslint": "^10.0.0"
+  }
+}

strata-daemon/Cargo.lock

@@ -1205,7 +1205,7 @@ dependencies = [
 
 [[package]]
 name = "strata-daemon"
-version = "0.8.0"
+version = "0.11.0"
 dependencies = [
  "anyhow",
  "blake3",

strata-daemon/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name        = "strata-daemon"
-version     = "0.8.0"
+version     = "0.11.0"
 edition     = "2021"
 description = "Strata clipboard manager backend daemon"
 

strata@edu4rdshl.dev/extension.js

@@ -13,6 +13,7 @@ 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';
+import { logError } from './util.js';
 
 export default class StrataExtension extends Extension {
     /** @type {Gio.Subprocess | null} */
@@ -21,7 +22,6 @@ export default class StrataExtension extends Extension {
     _daemonRestartAttempts = 0;
     _shuttingDown = false;
     _daemonRestartTimerId = null;
-    _daemonKillTimerId = null;
     /** True while a GetNameOwner check before spawning is in flight, so an
      *  overlapping respawn attempt can't spawn a second daemon. */
     _spawnPending = false;
@@ -35,18 +35,12 @@ export default class StrataExtension extends Extension {
     _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;
 
@@ -57,55 +51,28 @@ export default class StrataExtension extends Extension {
     _excludedApps = [];
     _pendingSignalId = null;
 
-    /** @type {boolean} Re-entrancy guard for signal processing */
-    #busy = false;
-
-    /** @type {number | null} Keyboard shortcut binding ID */
-    _shortcutId = null;
+    /** @type {Set<number>} Pending GLib.idle_add source IDs to flush on disable. */
+    _idleSources = new Set();
 
     enable() {
         this._shuttingDown = false;
         this._daemonRestartAttempts = 0;
-        // Cancel any pending force-kill timer left over from a previous disable
-        // (enable→disable→enable within 1.5s) so it can't outlive this cycle.
-        if (this._daemonKillTimerId) {
-            GLib.Source.remove(this._daemonKillTimerId);
-            this._daemonKillTimerId = null;
-        }
 
         this._settings = this.getSettings();
-        this._excludedApps = this._settings.get_strv('excluded-apps');
-        this._excludedAppsChangedId = this._settings.connect('changed::excluded-apps', () => {
-            this._excludedApps = this._settings.get_strv('excluded-apps');
-        });
-
+        this._excludedApps = this._readExcluded();
         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(); }),
-        ];
+        this._settings.connectObject(
+            'changed::excluded-apps', () => { this._excludedApps = this._readExcluded(); },
+            'changed::max-history',   () => { this._readSizeLimits(); this._pushConfig(); },
+            'changed::max-text-mb',   () => { this._readSizeLimits(); this._pushConfig(); },
+            'changed::max-image-mb',  () => { this._readSizeLimits(); this._pushConfig(); },
+            this);
 
-        // Load the light theme overrides into the Shell theme context. They stay
-        // inert until the panel toggles the `.strata-theme-light` class (panel.js).
-        this._loadThemeStylesheet();
-
-        // 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();
     }
 
@@ -116,28 +83,18 @@ export default class StrataExtension extends Extension {
             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;
-        }
-        if (this._excludedAppsChangedId && this._settings) {
-            this._settings.disconnect(this._excludedAppsChangedId);
-            this._excludedAppsChangedId = null;
-        }
+        this._clearIdleSources();
+        this._proxy?.disconnectObject(this);
+        this._settings?.disconnectObject(this);
         this._panel?.destroy();
         this._panel = null;
+        this._indicator?.disconnectObject(this);
         this._indicator?.destroy();
         this._indicator = null;
-        this._unloadThemeStylesheet();
         this._stopDaemon();
         this._proxy = null;
         this._settings = null;
@@ -152,20 +109,19 @@ export default class StrataExtension extends Extension {
             style_class: 'system-status-icon',
         });
         this._indicator.add_child(icon);
-        this._indicator.connect('button-press-event', () => {
+        this._indicator.connectObject('button-press-event', () => {
             this._panel?.toggle();
             return false; // EVENT_PROPAGATE
-        });
+        }, this);
         Main.panel.addToStatusArea('strata', this._indicator);
     }
 
 
     _connectClipboardMonitor() {
-        const selection = global.display.get_selection();
-        this._selectionChangedId = selection.connect('owner-changed', (_sel, type) => {
+        global.display.get_selection().connectObject('owner-changed', (_sel, type) => {
             if (type !== Meta.SelectionType.SELECTION_CLIPBOARD) return;
             this._scheduleClipboardRead();
-        });
+        }, this);
     }
 
     _disconnectClipboardMonitor() {
@@ -176,10 +132,7 @@ export default class StrataExtension extends Extension {
             this._clipboardDebounceId = null;
         }
         this._clipboardTransferPending = false;
-        if (this._selectionChangedId !== null) {
-            global.display.get_selection().disconnect(this._selectionChangedId);
-            this._selectionChangedId = null;
-        }
+        global.display.get_selection().disconnectObject(this);
     }
 
     /** Debounce entry point - coalesces rapid clipboard changes (e.g. from
@@ -196,8 +149,6 @@ export default class StrataExtension extends Extension {
         });
     }
 
-    /** 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();
@@ -206,6 +157,7 @@ export default class StrataExtension extends Extension {
         // copied secrets with this hint mime. Honoring it lets users keep
         // their passwords out of clipboard history.
         if (mimes.includes('x-kde-passwordManagerHint')) return;
+        if (this._isExcluded(this._currentFocusedApp)) return;
         const mime = this._pickMime(mimes);
         if (!mime) return;
 
@@ -225,14 +177,10 @@ export default class StrataExtension extends Extension {
                     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.
+                    if (size > (mime.startsWith('image/') ? this._maxImageBytes : this._maxTextBytes)) return;
                     this._proxy?.SubmitItemRemote(mime, bytes.get_data(), () => {});
                 } catch (e) {
-                    console.error('[Strata] Clipboard read error:', e.message);
+                    logError('Clipboard read error', e);
                 }
             }
         );
@@ -241,7 +189,6 @@ export default class StrataExtension extends Extension {
     /** 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/x-icon',
             // Plain text (UTF-8 preferred, then locale, then X11 legacy aliases).
@@ -261,9 +208,7 @@ export default class StrataExtension extends Extension {
         ];
         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.
+        // Allowlist only: see pick_mime in the daemon. Unknown mime types are skipped.
         return null;
     }
 
@@ -288,10 +233,8 @@ export default class StrataExtension extends Extension {
                 if (this._shuttingDown) return;
                 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.
+                    // Name already owned (e.g. systemd user service) - don't spawn a second instance.
+                } catch {
                     this._doSpawnDaemon();
                 }
             }
@@ -302,10 +245,7 @@ export default class StrataExtension extends Extension {
         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.'
-            );
+            logError('strata-daemon not found in PATH. Install the strata-daemon package or place the binary in your PATH.');
             this._notifyDaemonMissing();
             return;
         }
@@ -318,7 +258,7 @@ export default class StrataExtension extends Extension {
             this._daemonSpawnTime = GLib.get_monotonic_time() / 1000; // ms
             this._daemon.wait_async(null, (proc) => this._onDaemonExited(proc));
         } catch (e) {
-            console.error('[Strata] Failed to spawn daemon:', e);
+            logError('Failed to spawn daemon', e);
             this._scheduleDaemonRestart();
         }
     }
@@ -332,12 +272,12 @@ export default class StrataExtension extends Extension {
             Main.messageTray.add(source);
             const notification = new MessageTray.Notification({
                 source,
-                title: 'Strata: daemon not found',
-                body: 'Install the strata-daemon package to enable clipboard history.',
+                title: 'Strata: daemon not installed',
+                body: 'Install the strata-daemon package. See the project page for instructions.',
                 urgency: MessageTray.Urgency.HIGH,
             });
             source.addNotification(notification);
-        } catch (_) {
+        } catch {
             // Message tray may not be available (e.g. during early startup) - already logged above.
         }
     }
@@ -351,26 +291,17 @@ export default class StrataExtension extends Extension {
         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;
-        }
+        if (this._shuttingDown) 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})`
-        );
+        logError(`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.'
-            );
+            logError('Daemon crashed 5 times in rapid succession - giving up. Disable and re-enable the extension to retry.');
             return;
         }
         this._scheduleDaemonRestart();
@@ -378,9 +309,12 @@ export default class StrataExtension extends Extension {
 
     _scheduleDaemonRestart() {
         if (this._shuttingDown) return;
+        if (this._daemonRestartTimerId !== null) {
+            GLib.Source.remove(this._daemonRestartTimerId);
+            this._daemonRestartTimerId = null;
+        }
         // 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();
@@ -390,20 +324,9 @@ export default class StrataExtension extends Extension {
 
     _stopDaemon() {
         if (!this._daemon) return;
-        // Capture reference immediately so the timer doesn't kill a newly-spawned daemon.
-        const daemonToStop = this._daemon;
+        const daemon = this._daemon;
         this._daemon = null;
-        try {
-            // Graceful shutdown via D-Bus first.
-            this._proxy?.ShutdownRemote(() => {});
-        } catch (_) {}
-        // Give it 1.5s then force-terminate. Track the source so a re-enable
-        // within that window can cancel it (see enable()).
-        this._daemonKillTimerId = GLib.timeout_add(GLib.PRIORITY_LOW, 1500, () => {
-            this._daemonKillTimerId = null;
-            try { daemonToStop.send_signal(15); } catch (_) {} // SIGTERM
-            return GLib.SOURCE_REMOVE;
-        });
+        daemon.send_signal(15); // SIGTERM
     }
 
 
@@ -414,22 +337,23 @@ export default class StrataExtension extends Extension {
                 BUS_NAME,
                 OBJECT_PATH,
                 (proxy, error) => {
+                    if (this._shuttingDown || proxy !== this._proxy) return;
                     if (error) {
-                        console.error('[Strata] D-Bus proxy error:', error);
+                        logError('D-Bus proxy error', error);
                         return;
                     }
                     this._connectSignals();
-                    this._panel = new StrataPanel(proxy, this._settings, this._indicator);
+                    this._panel = new StrataPanel(proxy, this._settings);
                     // 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(); });
+                    proxy.connectObject('notify::g-name-owner',
+                        () => { if (proxy.g_name_owner) this._pushConfig(); }, this);
                 }
             );
         } catch (e) {
-            console.error('[Strata] Failed to create D-Bus proxy:', e);
+            logError('Failed to create D-Bus proxy', e);
         }
     }
 
@@ -452,80 +376,77 @@ export default class StrataExtension extends Extension {
     }
 
     _connectSignals() {
-        this._itemAddedId = Gio.DBus.session.signal_subscribe(
-            BUS_NAME,
-            'dev.edu4rdshl.Strata.Manager',
-            'ItemAdded',
-            OBJECT_PATH,
-            null,
-            Gio.DBusSignalFlags.NONE,
-            this._onItemAdded.bind(this)
-        );
+        this._itemAddedId = this._proxy.connectSignal('ItemAdded',
+            (_p, _sender, [id, mimeType, preview]) =>
+                this._onItemAdded(id, mimeType, preview));
 
-        this._itemDeletedId = Gio.DBus.session.signal_subscribe(
-            BUS_NAME,
-            'dev.edu4rdshl.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.
+        this._itemDeletedId = this._proxy.connectSignal('ItemDeleted',
+            (_p, _sender, [id]) => {
                 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;
-                });
-            }
-        );
+                } catch { /* no cached thumbnail for this id */ }
+                this._addIdleSource(() => this._panel?.removeItem(id));
+            });
 
-        this._historyClearedId = Gio.DBus.session.signal_subscribe(
-            BUS_NAME,
-            'dev.edu4rdshl.Strata.Manager',
-            'HistoryCleared',
-            OBJECT_PATH,
-            null,
-            Gio.DBusSignalFlags.NONE,
+        this._historyClearedId = this._proxy.connectSignal('HistoryCleared',
             () => {
-                // Wipe all on-disk thumbnails when daemon clears history.
+                this._clearThumbnailCache();
+                this._addIdleSource(() => this._panel?.clearItems());
+            });
+    }
+
+    /** Delete every cached thumbnail without blocking the compositor:
+     *  enumerate and unlink asynchronously in batches. */
+    _clearThumbnailCache() {
+        const dir = Gio.File.new_for_path(
+            `${GLib.get_user_cache_dir()}/strata/thumbnails`);
+        dir.enumerate_children_async(
+            'standard::name', Gio.FileQueryInfoFlags.NONE,
+            GLib.PRIORITY_DEFAULT, null,
+            (d, res) => {
+                let en;
                 try {
-                    const dir = `${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 = d.enumerate_children_finish(res);
+                } catch {
+                    return; // dir missing or unreadable
+                }
+                const step = () => {
+                    en.next_files_async(32, GLib.PRIORITY_DEFAULT, null, (e, r) => {
+                        let infos;
+                        try {
+                            infos = e.next_files_finish(r);
+                        } catch {
+                            infos = [];
                         }
-                        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;
-                });
-            }
-        );
+                        if (infos.length === 0) {
+                            e.close_async(GLib.PRIORITY_DEFAULT, null, () => {});
+                            return;
+                        }
+                        for (const info of infos) {
+                            e.get_child(info).delete_async(
+                                GLib.PRIORITY_DEFAULT, null,
+                                (f, rr) => { try { f.delete_finish(rr); } catch { /* best-effort */ } });
+                        }
+                        step();
+                    });
+                };
+                step();
+            });
     }
 
     _disconnectSignals() {
-        if (this._itemAddedId !== null) {
-            Gio.DBus.session.signal_unsubscribe(this._itemAddedId);
+        if (this._itemAddedId && this._proxy) {
+            this._proxy.disconnectSignal(this._itemAddedId);
             this._itemAddedId = null;
         }
-        if (this._itemDeletedId !== null) {
-            Gio.DBus.session.signal_unsubscribe(this._itemDeletedId);
+        if (this._itemDeletedId && this._proxy) {
+            this._proxy.disconnectSignal(this._itemDeletedId);
             this._itemDeletedId = null;
         }
-        if (this._historyClearedId !== null) {
-            Gio.DBus.session.signal_unsubscribe(this._historyClearedId);
+        if (this._historyClearedId && this._proxy) {
+            this._proxy.disconnectSignal(this._historyClearedId);
             this._historyClearedId = null;
         }
         if (this._pendingSignalId !== null) {
@@ -535,7 +456,24 @@ export default class StrataExtension extends Extension {
     }
 
 
-    _onItemAdded(_conn, _sender, _path, _iface, _signal, params) {
+    /** Schedule a one-shot idle callback whose source ID is tracked so disable()
+     *  can drop pending work instead of leaking a closure on `this`. */
+    _addIdleSource(callback) {
+        const id = GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => {
+            this._idleSources.delete(id);
+            callback();
+            return GLib.SOURCE_REMOVE;
+        });
+        this._idleSources.add(id);
+        return id;
+    }
+
+    _clearIdleSources() {
+        for (const id of this._idleSources) GLib.Source.remove(id);
+        this._idleSources.clear();
+    }
+
+    _onItemAdded(id, mimeType, preview) {
         // Debounce: if the daemon emits a burst, coalesce into one update.
         if (this._pendingSignalId !== null) {
             GLib.Source.remove(this._pendingSignalId);
@@ -543,55 +481,30 @@ export default class StrataExtension extends Extension {
         }
         this._pendingSignalId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, 50, () => {
             this._pendingSignalId = null;
-            this._processItemAdded(params).catch(e => console.error('[Strata] ItemAdded error:', e));
+            this._addIdleSource(() => this._panel?.prependItem(id, mimeType, preview));
             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;
-        }
+    _readExcluded() {
+        return this._settings.get_strv('excluded-apps').map(s => s.toLowerCase());
     }
 
     _isExcluded(appClass) {
         if (!appClass) return false;
-        return this._excludedApps.some(ex => appClass.includes(ex.toLowerCase()));
+        return this._excludedApps.some(ex => appClass.includes(ex));
     }
 
 
     _connectFocusTracking() {
-        this._focusSignalId = global.display.connect('notify::focus-window', () => {
+        global.display.connectObject('notify::focus-window', () => {
             const win = global.display.focus_window;
             this._currentFocusedApp = (win?.get_wm_class() ?? '').toLowerCase();
-        });
+        }, this);
     }
 
     _disconnectFocusTracking() {
-        if (this._focusSignalId !== null) {
-            global.display.disconnect(this._focusSignalId);
-            this._focusSignalId = null;
-        }
+        global.display.disconnectObject(this);
     }
 
 
@@ -612,37 +525,4 @@ export default class StrataExtension extends Extension {
     _unregisterShortcut() {
         Main.wm.removeKeybinding('keyboard-shortcut');
     }
-
-
-    /** Load light.css into the global St theme context ONCE. It is scoped under
-     *  `.strata-theme-light`, so it stays inert until the panel adds that class
-     *  (dark/light switching is the panel's class toggle, independent of this).
-     *
-     *  We deliberately do NOT subscribe to the theme context's 'changed'
-     *  signal: load_stylesheet itself emits 'changed', so reloading on it feeds
-     *  back into itself and hits "too much recursion" (it fired on screen
-     *  unlock, which restyles widgets). The only thing a one-time load gives up
-     *  is re-applying after a GNOME Shell *theme* switch (which replaces the
-     *  St.Theme and drops this sheet) - a rare action, recoverable by toggling
-     *  the extension. That trade is worth never touching the signal. */
-    _loadThemeStylesheet() {
-        try {
-            const themeContext = St.ThemeContext.get_for_stage(global.stage);
-            this._lightCssFile = this.dir.get_child('light.css');
-            this._stTheme = themeContext.get_theme();
-            this._stTheme.load_stylesheet(this._lightCssFile);
-        } catch (e) {
-            console.error('[Strata] Failed to load light.css:', e);
-        }
-    }
-
-    _unloadThemeStylesheet() {
-        try {
-            this._stTheme?.unload_stylesheet(this._lightCssFile);
-        } catch (e) {
-            console.error('[Strata] Failed to unload light.css:', e);
-        }
-        this._stTheme = null;
-        this._lightCssFile = null;
-    }
 }

strata@edu4rdshl.dev/light.css

@@ -1,143 +0,0 @@
-/* Strata light theme.
- *
- * Loaded into the Shell theme context by extension.js and activated by toggling
- * the `.strata-theme-light` class on the panel root box (see ui/panel.js).
- * Every rule is scoped under `.strata-theme-light` so it is strictly more
- * specific than its counterpart in stylesheet.css and wins deterministically,
- * regardless of stylesheet load order. The dark theme (stylesheet.css) is left
- * untouched: with no class present, none of these rules apply.
- *
- * Colors follow GNOME Adwaita (blue #3584e4, link #1a5fb4, amber #b5830a,
- * red #e01b24) and are picked for contrast on a light panel.
- *
- * Performance rule (same as stylesheet.css): NO `transition: all`, NO
- * Clutter/CSS animations. Only background-color transitions on hover.
- */
-
-/* ── Panel container ────────────────────────────────────────────────────── */
-.strata-panel.strata-theme-light {
-    background-color: rgba(250, 250, 250, 0.98);
-    border-color: rgba(0, 0, 0, 0.14);
-    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.28);
-}
-
-/* ── Header ─────────────────────────────────────────────────────────────── */
-.strata-theme-light .strata-title {
-    color: rgba(0, 0, 0, 0.87);
-}
-
-.strata-theme-light .strata-clear-btn {
-    border-color: rgba(0, 0, 0, 0.18);
-    color: rgba(0, 0, 0, 0.55);
-}
-
-.strata-theme-light .strata-clear-btn:hover {
-    background-color: rgba(0, 0, 0, 0.07);
-    color: rgba(0, 0, 0, 0.85);
-}
-
-/* ── Search box ─────────────────────────────────────────────────────────── */
-.strata-theme-light .strata-search {
-    background-color: rgba(0, 0, 0, 0.05);
-    border-color: rgba(0, 0, 0, 0.14);
-    color: rgba(0, 0, 0, 0.87);
-    caret-color: rgba(0, 0, 0, 0.8);
-}
-
-.strata-theme-light .strata-search:focus {
-    border-color: rgba(53, 132, 228, 0.8);
-    background-color: rgba(0, 0, 0, 0.035);
-}
-
-/* Placeholder ("Search...") text - legible dim gray on the light panel. */
-.strata-theme-light .strata-search-hint {
-    color: rgba(0, 0, 0, 0.55);
-}
-
-/* ── Clipboard item: hover / focus (Adwaita blue) ───────────────────────── */
-.strata-theme-light .strata-item:hover,
-.strata-theme-light .strata-item-hovered {
-    background-color: rgba(53, 132, 228, 0.14);
-    border-color: rgba(53, 132, 228, 0.45);
-}
-
-.strata-theme-light .strata-item:focus,
-.strata-theme-light .strata-item-focused {
-    background-color: rgba(53, 132, 228, 0.16);
-    border-color: rgba(53, 132, 228, 0.65);
-}
-
-.strata-theme-light .strata-item:hover:focus,
-.strata-theme-light .strata-item-focused.strata-item-hovered {
-    background-color: rgba(53, 132, 228, 0.24);
-    border-color: rgba(53, 132, 228, 0.78);
-}
-
-.strata-theme-light .strata-item:focus .strata-item-text,
-.strata-theme-light .strata-item-focused .strata-item-text {
-    color: rgba(0, 0, 0, 0.95);
-}
-
-/* ── Active item (warm amber, darkened for light bg) ────────────────────── */
-.strata-theme-light .strata-item-active {
-    background-color: rgba(181, 131, 10, 0.16);
-    border-color: rgba(181, 131, 10, 0.50);
-}
-
-.strata-theme-light .strata-item-active .strata-item-text {
-    color: rgba(120, 82, 0, 1.0);
-}
-
-.strata-theme-light .strata-item-active.strata-item-hovered {
-    background-color: rgba(181, 131, 10, 0.24);
-}
-
-.strata-theme-light .strata-item-active.strata-item-focused,
-.strata-theme-light .strata-item-active:focus {
-    background-color: rgba(53, 132, 228, 0.20);
-    border-color: rgba(53, 132, 228, 0.65);
-}
-
-.strata-theme-light .strata-item-active.strata-item-focused .strata-item-text,
-.strata-theme-light .strata-item-active:focus .strata-item-text {
-    color: rgba(0, 0, 0, 0.95);
-}
-
-.strata-theme-light .strata-item:active {
-    background-color: rgba(0, 0, 0, 0.10);
-}
-
-/* ── Item icon / thumbnail ──────────────────────────────────────────────── */
-.strata-theme-light .strata-item-icon {
-    color: rgba(0, 0, 0, 0.55);
-}
-
-.strata-theme-light .strata-item-thumb {
-    border-color: rgba(0, 0, 0, 0.15);
-}
-
-/* ── Text content ───────────────────────────────────────────────────────── */
-.strata-theme-light .strata-item-text {
-    color: rgba(0, 0, 0, 0.85);
-}
-
-.strata-theme-light .strata-item-url {
-    color: rgba(26, 95, 180, 1.0);
-}
-
-.strata-theme-light .strata-item-subtext {
-    color: rgba(0, 0, 0, 0.55);
-}
-
-/* ── Delete button (Adwaita red) ────────────────────────────────────────── */
-.strata-theme-light .strata-item:hover .strata-item-delete,
-.strata-theme-light .strata-item:focus .strata-item-delete,
-.strata-theme-light .strata-item-focused .strata-item-delete,
-.strata-theme-light .strata-item-hovered .strata-item-delete {
-    color: rgba(224, 27, 36, 0.75);
-}
-
-.strata-theme-light .strata-item-delete:hover {
-    background-color: rgba(224, 27, 36, 0.13);
-    color: rgba(224, 27, 36, 1.0);
-}

strata@edu4rdshl.dev/metadata.json

@@ -1,9 +1,9 @@
 {
   "name": "Strata",
-  "description": "A fast, stutter-free clipboard manager. All I/O runs in a Rust daemon - GNOME Shell is never blocked.",
+  "description": "A fast clipboard manager. Storage, search and image decoding run in a separate Rust daemon.",
   "uuid": "strata@edu4rdshl.dev",
-  "version": 8,
-  "shell-version": ["45", "46", "47", "48", "49", "50"],
+  "version": 11,
+  "shell-version": ["50"],
   "settings-schema": "org.gnome.shell.extensions.strata",
   "url": "https://github.com/Edu4rdSHL/Strata"
 }

strata@edu4rdshl.dev/prefs.js

@@ -1,15 +1,8 @@
-/**
- * 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)
- */
+/* prefs.js - Strata preferences window. */
 
 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';
@@ -22,17 +15,12 @@ export default class StrataPreferences extends ExtensionPreferences {
         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({
@@ -89,32 +77,8 @@ export default class StrataPreferences extends ExtensionPreferences {
 
         page.add(historyGroup);
 
-        // ── Appearance ───────────────────────────────────────────────────────
         const appearanceGroup = new Adw.PreferencesGroup({ title: 'Appearance' });
 
-        const themes = [
-            { id: 'auto',  label: 'Automatic' },
-            { id: 'light', label: 'Light'     },
-            { id: 'dark',  label: 'Dark'      },
-        ];
-        const themeRow = new Adw.ComboRow({
-            title: 'Theme',
-            subtitle: 'Automatic follows the system light/dark preference',
-            model: Gtk.StringList.new(themes.map(t => t.label)),
-        });
-        const currentTheme = settings.get_string('theme');
-        const currentThemeIdx = themes.findIndex(t => t.id === currentTheme);
-        themeRow.selected = currentThemeIdx >= 0 ? currentThemeIdx : 0;
-        themeRow.connect('notify::selected', () => {
-            settings.set_string('theme', themes[themeRow.selected].id);
-        });
-        settings.connect('changed::theme', () => {
-            const idx = themes.findIndex(t => t.id === settings.get_string('theme'));
-            if (idx >= 0 && themeRow.selected !== idx)
-                themeRow.selected = idx;
-        });
-        appearanceGroup.add(themeRow);
-
         const panelWidthRow = new Adw.SpinRow({
             title: 'Panel width',
             subtitle: 'Width of the clipboard panel in pixels',
@@ -180,7 +144,6 @@ export default class StrataPreferences extends ExtensionPreferences {
 
         page.add(appearanceGroup);
 
-        // ── Keyboard ─────────────────────────────────────────────────────────
         const kbGroup = new Adw.PreferencesGroup({ title: 'Keyboard' });
 
         const shortcutRow = new Adw.ActionRow({
@@ -208,10 +171,6 @@ export default class StrataPreferences extends ExtensionPreferences {
         return page;
     }
 
-    // -------------------------------------------------------------------------
-    // Privacy page
-    // -------------------------------------------------------------------------
-
     _buildPrivacyPage(settings) {
         const page = new Adw.PreferencesPage({
             title: 'Privacy',
@@ -223,13 +182,11 @@ export default class StrataPreferences extends ExtensionPreferences {
             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++) {
@@ -239,7 +196,6 @@ export default class StrataPreferences extends ExtensionPreferences {
             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'],
@@ -280,7 +236,6 @@ export default class StrataPreferences extends ExtensionPreferences {
                 listBox.append(row);
             }
 
-            // Add-new row.
             const addRow = new Adw.ActionRow({ activatable: false });
             const addEntry = new Gtk.Entry({
                 placeholder_text: 'App name…',
@@ -314,10 +269,6 @@ export default class StrataPreferences extends ExtensionPreferences {
         return page;
     }
 
-    // -------------------------------------------------------------------------
-    // Keyboard shortcut dialog
-    // -------------------------------------------------------------------------
-
     _showShortcutDialog(parent, settings) {
         const dialog = new Adw.MessageDialog({
             heading: 'Set Keyboard Shortcut',

strata@edu4rdshl.dev/schemas/org.gnome.shell.extensions.strata.gschema.xml

@@ -52,17 +52,6 @@
       <description>When enabled, clicking or pressing Enter on a history item moves it to position 1 in the list.</description>
     </key>
 
-    <key name="theme" type="s">
-      <choices>
-        <choice value="auto"/>
-        <choice value="light"/>
-        <choice value="dark"/>
-      </choices>
-      <default>'auto'</default>
-      <summary>Panel color theme</summary>
-      <description>Auto follows the system light/dark color scheme (org.gnome.desktop.interface color-scheme). Light and Dark force a fixed theme.</description>
-    </key>
-
     <key name="panel-position" type="s">
       <choices>
         <choice value="top-center"/>

strata@edu4rdshl.dev/stylesheet-dark.css

@@ -1,4 +1,4 @@
-/* Strata clipboard manager stylesheet.
+/* Strata dark theme (the default; loaded when the system color scheme is dark).
  *
  * Performance rule: NO `transition: all`, NO Clutter/CSS animations.
  * Only background-color transitions on hover (GPU-composited, zero JS).

strata@edu4rdshl.dev/stylesheet-light.css

@@ -0,0 +1,129 @@
+/* Strata light theme.
+ *
+ * GNOME Shell loads this instead of stylesheet-dark.css when the system color
+ * scheme is light. It imports the dark base and overrides the colors below, so
+ * the overrides win by load order. Colors follow GNOME Adwaita (blue #3584e4,
+ * link #1a5fb4, amber, red #e01b24), picked for contrast on a light panel.
+ */
+
+@import url("stylesheet-dark.css");
+
+.strata-panel {
+    background-color: rgba(250, 250, 250, 0.98);
+    border-color: rgba(0, 0, 0, 0.14);
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.28);
+}
+
+.strata-title {
+    color: rgba(0, 0, 0, 0.87);
+}
+
+.strata-clear-btn {
+    border-color: rgba(0, 0, 0, 0.18);
+    color: rgba(0, 0, 0, 0.55);
+}
+
+.strata-clear-btn:hover {
+    background-color: rgba(0, 0, 0, 0.07);
+    color: rgba(0, 0, 0, 0.85);
+}
+
+.strata-search {
+    background-color: rgba(0, 0, 0, 0.05);
+    border-color: rgba(0, 0, 0, 0.14);
+    color: rgba(0, 0, 0, 0.87);
+    caret-color: rgba(0, 0, 0, 0.8);
+}
+
+.strata-search:focus {
+    border-color: rgba(53, 132, 228, 0.8);
+    background-color: rgba(0, 0, 0, 0.035);
+}
+
+/* Placeholder ("Search...") text - legible dim gray on the light panel. */
+.strata-search-hint {
+    color: rgba(0, 0, 0, 0.55);
+}
+
+.strata-item:hover,
+.strata-item-hovered {
+    background-color: rgba(53, 132, 228, 0.14);
+    border-color: rgba(53, 132, 228, 0.45);
+}
+
+.strata-item:focus,
+.strata-item-focused {
+    background-color: rgba(53, 132, 228, 0.16);
+    border-color: rgba(53, 132, 228, 0.65);
+}
+
+.strata-item:hover:focus,
+.strata-item-focused.strata-item-hovered {
+    background-color: rgba(53, 132, 228, 0.24);
+    border-color: rgba(53, 132, 228, 0.78);
+}
+
+.strata-item:focus .strata-item-text,
+.strata-item-focused .strata-item-text {
+    color: rgba(0, 0, 0, 0.95);
+}
+
+.strata-item-active {
+    background-color: rgba(181, 131, 10, 0.16);
+    border-color: rgba(181, 131, 10, 0.50);
+}
+
+.strata-item-active .strata-item-text {
+    color: rgba(120, 82, 0, 1.0);
+}
+
+.strata-item-active.strata-item-hovered {
+    background-color: rgba(181, 131, 10, 0.24);
+}
+
+.strata-item-active.strata-item-focused,
+.strata-item-active:focus {
+    background-color: rgba(53, 132, 228, 0.20);
+    border-color: rgba(53, 132, 228, 0.65);
+}
+
+.strata-item-active.strata-item-focused .strata-item-text,
+.strata-item-active:focus .strata-item-text {
+    color: rgba(0, 0, 0, 0.95);
+}
+
+.strata-item:active {
+    background-color: rgba(0, 0, 0, 0.10);
+}
+
+.strata-item-icon {
+    color: rgba(0, 0, 0, 0.55);
+}
+
+.strata-item-thumb {
+    border-color: rgba(0, 0, 0, 0.15);
+}
+
+.strata-item-text {
+    color: rgba(0, 0, 0, 0.85);
+}
+
+.strata-item-url {
+    color: rgba(26, 95, 180, 1.0);
+}
+
+.strata-item-subtext {
+    color: rgba(0, 0, 0, 0.55);
+}
+
+.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(224, 27, 36, 0.75);
+}
+
+.strata-item-delete:hover {
+    background-color: rgba(224, 27, 36, 0.13);
+    color: rgba(224, 27, 36, 1.0);
+}

strata@edu4rdshl.dev/ui/clipboardItem.js

@@ -6,6 +6,8 @@ import St from 'gi://St';
 import Clutter from 'gi://Clutter';
 import Gio from 'gi://Gio';
 
+import { logError } from '../util.js';
+
 const TEXT_PREVIEW_LEN = 140;
 const THUMB_SIZE = 48;
 
@@ -22,24 +24,23 @@ function iconForMime(mimeType) {
     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({
+    GTypeName: 'StrataClipboardItem',
     Signals: {
         'activate': {},
         'delete':   {},
     },
-}, class ClipboardItem extends St.Button {
-    _init(id, mimeType, preview, opts = {}) {
-        super._init({
+}, class extends St.Button {
+    constructor(id, mimeType, preview, opts = {}) {
+        super({
             style_class: 'strata-item',
             x_expand: true,
             can_focus: true,
@@ -48,26 +49,20 @@ export const ClipboardItem = GObject.registerClass({
 
         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));
+        const isImage = mimeType.startsWith('image/');
+        const urlLike = !isImage && isUrl(preview ?? '');
+        const colorLike = !isImage && !urlLike && isColor(preview ?? '');
+        row.add_child(this._buildLeading(mimeType, preview, isImage, colorLike));
+        row.add_child(this._buildContent(preview, isImage, urlLike, colorLike));
 
-        // 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',
@@ -96,11 +91,11 @@ export const ClipboardItem = GObject.registerClass({
         });
     }
 
-    _buildLeading(mimeType, preview) {
-        if (mimeType.startsWith('image/')) {
+    _buildLeading(mimeType, preview, isImage, colorLike) {
+        if (isImage) {
             return this._buildThumbnail(this._id);
         }
-        if (isColor(preview)) {
+        if (colorLike) {
             return this._buildColorSwatch(preview);
         }
         const icon = new St.Icon({
@@ -112,10 +107,6 @@ export const ClipboardItem = GObject.registerClass({
         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,
@@ -131,22 +122,19 @@ export const ClipboardItem = GObject.registerClass({
         const applyStyle = () => {
             try {
                 container.style = `background-image: url("${fileUri}"); background-size: cover; background-repeat: no-repeat;`;
-            } catch (_) { /* container was destroyed mid-flight */ }
+            } 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);
@@ -172,18 +160,18 @@ export const ClipboardItem = GObject.registerClass({
                                 this._thumbCache?.set(id, cachePath);
                                 applyStyle();
                             } catch (e) {
-                                console.error('[Strata] Thumbnail write error:', e);
+                                logError('Thumbnail write error', e);
                                 this._fallbackIcon(container);
                             }
                         }
                     );
                 } catch (e) {
-                    console.error('[Strata] Thumbnail fetch handler error:', e);
+                    logError('Thumbnail fetch handler error', e);
                     this._fallbackIcon(container);
                 }
             });
         } catch (e) {
-            console.error('[Strata] Thumbnail render error:', e);
+            logError('Thumbnail render error', e);
             this._fallbackIcon(container);
         }
         return container;
@@ -199,7 +187,7 @@ export const ClipboardItem = GObject.registerClass({
                 x_align: Clutter.ActorAlign.CENTER,
             });
             container.add_child(icon);
-        } catch (_) {}
+        } catch { /* container destroyed before the icon was added */ }
     }
 
     _buildColorSwatch(hex) {
@@ -212,7 +200,7 @@ export const ClipboardItem = GObject.registerClass({
         });
     }
 
-    _buildContent(mimeType, preview) {
+    _buildContent(preview, isImage, urlLike, colorLike) {
         preview = preview ?? '';
         const box = new St.BoxLayout({
             vertical: true,
@@ -220,20 +208,20 @@ export const ClipboardItem = GObject.registerClass({
             style_class: 'strata-item-content',
         });
 
-        let mainText = '';
-        let subText  = '';
+        let mainText;
+        let subText = '';
 
-        if (mimeType.startsWith('image/')) {
+        if (isImage) {
             // Generic label - the thumbnail identifies the image, and the
             // on-clipboard format (often PNG even for a copied GIF/WebP) is an
             // implementation detail that misleads more than it informs.
             mainText = 'Image';
-        } else if (isUrl(preview)) {
+        } else if (urlLike) {
             mainText = preview.trim();
             try {
-                subText = new URL(preview.trim()).hostname;
-            } catch (_) {}
-        } else if (isColor(preview)) {
+                subText = GLib.Uri.parse(preview.trim(), GLib.UriFlags.NONE).get_host() ?? '';
+            } catch { /* not a parseable URI */ }
+        } else if (colorLike) {
             mainText = preview.trim().toUpperCase();
             subText  = 'Color';
         } else {
@@ -245,7 +233,7 @@ export const ClipboardItem = GObject.registerClass({
 
         const labelMain = new St.Label({
             text: mainText || '(empty)',
-            style_class: `strata-item-text${isUrl(preview) ? ' strata-item-url' : ''}`,
+            style_class: `strata-item-text${urlLike ? ' strata-item-url' : ''}`,
             x_expand: true,
             y_align: Clutter.ActorAlign.CENTER,
         });

strata@edu4rdshl.dev/ui/panel.js

@@ -1,7 +1,6 @@
 /* panel.js - Strata clipboard popup panel. */
 
 import GLib from 'gi://GLib';
-import Gio from 'gi://Gio';
 import St from 'gi://St';
 import Clutter from 'gi://Clutter';
 import Meta from 'gi://Meta';
@@ -9,18 +8,18 @@ import Shell from 'gi://Shell';
 
 import * as Main from 'resource:///org/gnome/shell/ui/main.js';
 import { ClipboardItem } from './clipboardItem.js';
+import { logError } from '../util.js';
 
 const SEARCH_DEBOUNCE_MS = 150;
 const LOAD_MORE_THRESHOLD = 200;
 
 export class StrataPanel {
-    constructor(proxy, settings, indicator = null) {
+    constructor(proxy, settings) {
         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'); });
+        settings.connectObject('changed::page-size',
+            () => { this._pageSize = settings.get_int('page-size'); }, this);
         /** @type {{ id: string, mimeType: string, preview: string }[]} */
         this._items = [];
         /** @type {Map<string, ClipboardItem>} id → widget */
@@ -29,7 +28,7 @@ export class StrataPanel {
         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._hasMore = true;            // false once daemon returns less than a full page
         this._loadingMore = false;       // re-entrancy guard for scroll-driven loads
         /** Search state. */
         this._searchQuery = '';          // current search string ('' = no search)
@@ -46,16 +45,6 @@ export class StrataPanel {
 
         this._buildUI();
 
-        // Theme: apply light/dark to the panel box and react to changes.
-        // The light.css overrides (loaded by extension.js) only take effect
-        // while the `.strata-theme-light` class is present on `_box`.
-        this._interfaceSettings = new Gio.Settings({ schema_id: 'org.gnome.desktop.interface' });
-        this._applyTheme();
-        this._themeChangedId = this._settings.connect('changed::theme',
-            () => this._applyTheme());
-        this._colorSchemeChangedId = this._interfaceSettings.connect('changed::color-scheme',
-            () => this._applyTheme());
-
         // 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
@@ -63,39 +52,21 @@ export class StrataPanel {
         // 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());
-    }
-
-    /** True when the effective theme is light. `auto` follows the system
-     *  color-scheme (anything other than prefer-dark counts as light). */
-    _effectiveIsLight() {
-        const mode = this._settings.get_string('theme');
-        if (mode === 'light') return true;
-        if (mode === 'dark') return false;
-        return this._interfaceSettings.get_string('color-scheme') !== 'prefer-dark';
-    }
-
-    /** Toggle the light-theme class on the panel root box. */
-    _applyTheme() {
-        if (!this._box) return;
-        if (this._effectiveIsLight())
-            this._box.add_style_class_name('strata-theme-light');
-        else
-            this._box.remove_style_class_name('strata-theme-light');
+        this._proxy.connectObject('notify::g-name-owner',
+            () => this._tryInitialLoad(), this);
     }
 
     _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));
+        this._loadHistory(0, this._pageSize).then(ok => {
+            if (!ok) this._initialLoaded = false;
+        });
     }
 
 
     _buildUI() {
-        // Overlay container - sits above all windows.
         this._overlay = new St.Widget({
             layout_manager: new Clutter.FixedLayout(),
             visible: false,
@@ -144,14 +115,12 @@ export class StrataPanel {
             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,
@@ -171,7 +140,6 @@ export class StrataPanel {
         header.add_child(title);
         header.add_child(clearBtn);
 
-        // Search box
         this._searchEntry = new St.Entry({
             hint_text: 'Search…',
             style_class: 'strata-search',
@@ -185,7 +153,6 @@ export class StrataPanel {
         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);
@@ -194,7 +161,6 @@ export class StrataPanel {
             return Clutter.EVENT_PROPAGATE;
         });
 
-        // Item list
         this._scrollView = new St.ScrollView({
             style_class: 'strata-scroll',
             x_expand: true,
@@ -208,21 +174,17 @@ export class StrataPanel {
         });
         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();
@@ -261,7 +223,7 @@ export class StrataPanel {
         // 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));
+                logError('open: history reload failed', e));
         }
         global.stage.set_key_focus(this._searchEntry.get_clutter_text());
     }
@@ -269,7 +231,6 @@ export class StrataPanel {
     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) {
@@ -291,17 +252,16 @@ export class StrataPanel {
                 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._itemList.insert_child_at_index(widget, 0);
             this._setActiveWidget(widget);
         } catch (e) {
-            console.error(`[Strata] prependItem failed for id=${id} mime=${mimeType}:`, e);
+            logError(`prependItem failed for id=${id} mime=${mimeType}`, e);
             this._items = this._items.filter(i => i.id !== id);
         }
     }
@@ -318,6 +278,7 @@ export class StrataPanel {
 
     removeItem(id) {
         this._items = this._items.filter(i => i.id !== id);
+        this._thumbCache.delete(id);
         // Keep the search snapshot in sync so a deleted/pruned item sitting in
         // the not-yet-rendered tail can't be re-created as a phantom row when
         // scrolling appends the next page. Adjust _searchRendered if the removed
@@ -335,7 +296,6 @@ export class StrataPanel {
             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);
@@ -351,27 +311,13 @@ export class StrataPanel {
         this._hoveredWidget = null;
         this._activeWidget  = null;
         this._widgets.clear();
+        this._thumbCache.clear();
         this._itemList.destroy_all_children();
     }
 
     destroy() {
-        if (this._pageSizeChangedId) {
-            this._settings.disconnect(this._pageSizeChangedId);
-            this._pageSizeChangedId = 0;
-        }
-        if (this._themeChangedId) {
-            this._settings.disconnect(this._themeChangedId);
-            this._themeChangedId = 0;
-        }
-        if (this._colorSchemeChangedId && this._interfaceSettings) {
-            this._interfaceSettings.disconnect(this._colorSchemeChangedId);
-            this._colorSchemeChangedId = 0;
-        }
-        this._interfaceSettings = null;
-        if (this._nameOwnerId) {
-            this._proxy.disconnect(this._nameOwnerId);
-            this._nameOwnerId = 0;
-        }
+        this._settings.disconnectObject(this);
+        this._proxy.disconnectObject(this);
         if (this._searchDebounceId) {
             GLib.Source.remove(this._searchDebounceId);
             this._searchDebounceId = null;
@@ -385,22 +331,23 @@ export class StrataPanel {
 
 
     async _loadHistory(offset, limit) {
-        if (!this._overlay) return 0;
+        if (!this._overlay) return false;
         try {
             const [json] = await this._proxy.GetHistoryAsync(offset, limit);
-            if (!this._overlay) return 0;
+            if (!this._overlay) return false;
             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 =>
+                if (!this._overlay) return false;
+                // eslint-disable-next-line no-await-in-loop -- batches deliberately yield to the main loop
+                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;
@@ -408,10 +355,10 @@ export class StrataPanel {
                 const firstWidget = this._widgets.get(items[0].id);
                 if (firstWidget) this._setActiveWidget(firstWidget);
             }
-            return items.length;
+            return true;
         } catch (e) {
-            console.error('[Strata] _loadHistory failed:', e);
-            return 0;
+            logError('GetHistory failed', e);
+            return false;
         }
     }
 
@@ -425,9 +372,9 @@ export class StrataPanel {
             this._items.push({ id, mimeType, preview });
             const widget = this._makeItemWidget(id, mimeType, preview);
             this._widgets.set(id, widget);
-            this._itemList.add_child(widget.actor);
+            this._itemList.add_child(widget);
         } catch (e) {
-            console.error(`[Strata] _appendItemFromMeta failed for id=${meta?.id}:`, e);
+            logError(`_appendItemFromMeta failed for id=${meta?.id}`, e);
         }
     }
 
@@ -443,7 +390,6 @@ export class StrataPanel {
             // snapshot (no re-query, so a scroll cannot race the search).
             this._renderSearchPage(this._searchEpoch);
         } else {
-            // Browse mode: pull the next page from the daemon.
             if (!this._hasMore) return;
             this._loadingMore = true;
             this._loadHistory(this._loadedOffset, this._pageSize)
@@ -475,21 +421,19 @@ export class StrataPanel {
                     for (let j = i; j < e; j++)
                         this._appendItemFromMeta(this._searchResults[j]);
                 };
-                // The very first chunk of a fresh render (start === 0, right after
-                // _clearListDom) is rendered synchronously, in the same frame as
-                // the clear, so the list never paints empty in between - that
-                // empty frame is the "blink" seen while typing a search. Later
-                // chunks (and scroll-driven pages) yield to idle to keep frames
-                // light.
+                // First chunk runs synchronously so the list never paints empty
+                // between clear and first append. Later chunks yield to idle.
                 if (i === 0) {
                     renderChunk();
                 } else {
-                    await new Promise(resolve =>
+                    // eslint-disable-next-line no-await-in-loop -- batches deliberately yield to the main loop
+                    await new Promise(resolve => {
                         GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, () => {
                             renderChunk();
                             resolve();
                             return GLib.SOURCE_REMOVE;
-                        }));
+                        });
+                    });
                 }
             }
             this._searchRendered = end;
@@ -545,14 +489,12 @@ export class StrataPanel {
         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);
     }
@@ -574,7 +516,7 @@ export class StrataPanel {
                 else if (box.y2 > cur + pageSize)
                     adj.value = box.y2 - pageSize;
             } catch (e) {
-                console.error('[Strata] ensureVisible error:', e);
+                logError('ensureVisible error', e);
             }
             return GLib.SOURCE_REMOVE;
         });
@@ -585,7 +527,7 @@ export class StrataPanel {
             const [mimeType, content] = await this._proxy.GetItemContentAsync(id);
             this._writeToClipboard(mimeType, content);
         } catch (e) {
-            console.error('[Strata] Paste error:', e);
+            logError('GetItemContent failed', e);
         }
         this.close();
     }
@@ -606,7 +548,7 @@ export class StrataPanel {
                 );
             }
         } catch (e) {
-            console.error('[Strata] Clipboard write error:', e);
+            logError('Clipboard write error', e);
         }
     }
 
@@ -614,7 +556,7 @@ export class StrataPanel {
         try {
             await this._proxy.ClearHistoryAsync();
         } catch (e) {
-            console.error('[Strata] ClearHistory error:', e);
+            logError('ClearHistory failed', e);
         }
     }
 
@@ -629,7 +571,7 @@ export class StrataPanel {
             GLib.PRIORITY_DEFAULT, SEARCH_DEBOUNCE_MS, () => {
                 this._searchDebounceId = null;
                 this._runSearch(trimmed).catch(e =>
-                    console.error('[Strata] search failed:', e));
+                    logError('search failed', e));
                 return GLib.SOURCE_REMOVE;
             });
     }
@@ -663,7 +605,7 @@ export class StrataPanel {
                     this._clearListDom();
                     this._items = [];
                 }
-            }).catch(e => console.error('[Strata] reset-history failed:', e));
+            }).catch(e => logError('reset-history failed', e));
             return;
         }
 
@@ -675,7 +617,7 @@ export class StrataPanel {
         try {
             [json] = await this._proxy.SearchHistoryAsync(query, limit);
         } catch (e) {
-            console.error('[Strata] SearchHistory D-Bus error:', e);
+            logError('SearchHistory failed', e);
             return;
         }
         if (epoch !== this._searchEpoch || !this._overlay) return; // stale or destroyed
@@ -684,7 +626,7 @@ export class StrataPanel {
         try {
             results = JSON.parse(json);
         } catch (e) {
-            console.error('[Strata] SearchHistory: bad JSON:', e);
+            logError('SearchHistory: bad JSON', e);
             return;
         }
 
@@ -719,13 +661,11 @@ export class StrataPanel {
     }
 
     _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);
     }
 
@@ -752,7 +692,6 @@ export class StrataPanel {
         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'))

strata@edu4rdshl.dev/util.js

@@ -0,0 +1,11 @@
+/* util.js - shared helpers for the Strata extension. */
+
+import GLib from 'gi://GLib';
+import Gio from 'gi://Gio';
+
+export function logError(label, err) {
+    if (err instanceof GLib.Error)
+        Gio.DBusError.strip_remote_error(err);
+    const tail = err !== undefined ? `: ${err?.message ?? err}` : '';
+    console.error(`[Strata] ${label}${tail}`);
+}