chore: bump versions to 0.4.0

Cut the 0.4.0 release: daemon Cargo.toml/Cargo.lock to 0.4.0, extension
metadata.json version to 4, and promote the CHANGELOG [Unreleased] entry
to [0.4.0] - 2026-05-26.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CHANGELOG.md

@@ -6,6 +6,18 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ---
 
+## [0.4.0] - 2026-05-26
+
+### Performance
+
+- `GetHistory` / `SearchHistory` now truncate `content_text` to a preview
+  (`substr`, ~200 chars) in SQL instead of returning the full payload. A
+  page of large text items previously serialized up to megabytes of JSON
+  over D-Bus and parsed it on the GJS main loop, only to render a 140-char
+  snippet. Full content is still served on demand by `GetItemContent`.
+
+---
+
 ## [0.3.0] - 2026-05-25
 
 ### Fixed

strata-daemon/Cargo.lock

@@ -1272,7 +1272,7 @@ checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
 [[package]]
 name = "strata-daemon"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "anyhow",
  "blake3",

strata-daemon/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name        = "strata-daemon"
-version     = "0.3.0"
+version     = "0.4.0"
 edition     = "2021"
 description = "Strata clipboard manager backend daemon"
 

strata@edu4rdshl.dev/metadata.json

@@ -2,7 +2,7 @@
   "name": "Strata",
   "description": "A fast, stutter-free clipboard manager. All I/O runs in a Rust daemon - GNOME Shell is never blocked.",
   "uuid": "strata@edu4rdshl.dev",
-  "version": 3,
+  "version": 4,
   "shell-version": ["45", "46", "47", "48", "49", "50"],
   "settings-schema": "org.gnome.shell.extensions.strata",
   "url": "https://github.com/Edu4rdSHL/Strata"