chore: bump version to 1.4.0 and document Critical Lifecycle Fixes

docs/CHANGELOG.md

@@ -12,6 +12,40 @@ und verlinkt für Details auf die Release-Pages.
 
 ---
 
+## Hellion Chat 1.4.0 — Critical Lifecycle Fixes
+
+First sub-patch of the v1.4.x Polish Sweep series. Seven
+known lifecycle and race bugs eliminated before any
+performance refactor sits on top.
+
+- MessageStore disposal no longer triggers GC.Collect
+  globally; Pooling=false on the SQLite connection means
+  there's nothing left to clean up by hand
+- PendingMessage and RetentionSweep worker threads are
+  explicitly marked IsBackground=true so the plugin domain
+  can unload during XIVLauncher reload without waiting
+  for them
+- EmoteCache image and gif loaders moved from async-void
+  to async Task with a shared task tracker, draining
+  on Dispose so an in-flight load can no longer write
+  to a disposed EmoteImages entry
+- DisposeAsync 10s timeout now warns loudly instead of
+  silently leaving the worker behind
+- Plugin.Dispose flushes any pending DeferredSaveFrames
+  before tearing services down, so settings changes
+  made in the last few frames before disable are no
+  longer lost
+- The v13→v14 config migration now reads the pre-v13
+  backup and carries HellionThemeWindowOpacity into the
+  new WindowOpacity field instead of falling back to
+  the default 0.85
+
+Modding & support: join Hellion Forge — https://discord.gg/X9V7Kcv5gR
+
+Based on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).
+
+---
+
 ## Hellion Chat 1.3.0 - Plugin Integrations: Honorific
 
 First step on the plugin-integration roadmap. HellionChat now

docs/ROADMAP.md

@@ -12,15 +12,24 @@ Privacy-First-Schnittmenge des Plugins erweisen.
 
 ---
 
-## Nächster Cycle (v1.4.0)
+## Nächster Cycle (v1.4.1)
 
-**Polish & Motion** - Theme-Crossfade, Header-Quick-Picker,
-Lerp-Animationen, ggf. Theme-Family-Picker (Carls Grün-Familie
-mit Forest/Moss/Mint-Helligkeitsstufen).
+**Theme Engine Performance** — HellionStyle Heap-Pressure
+eliminieren (StackHandle-Cache, ABGR-Cache auf Theme-Object,
+spart 47 Heap-Allocs pro Frame), ThemeRegistry File-Lock-
+Härtung beim Custom-Theme-Load.
 
-Spec wird im Brainstorming-Cycle vor Beginn der Phase ausgearbeitet.
+## v1.4.0 — Critical Lifecycle Fixes (released <Datum>)
 
-## v1.3.0 - Plugin Integrations: Honorific (geplant <Datum>)
+Erster Sub-Patch der v1.4.x Polish-Sweep-Serie. Sieben P0-
+Findings aus Audit-Pass-3 und Pass-4 abgearbeitet:
+async-void-Loads, fehlende IsBackground-Flags, GC.Collect
+in Dispose, DeferredSave-Race und Pre-v13-Backup-Lookup für
+WindowOpacity. Keine Schema-Bumps, keine Funktions-
+Änderungen für den User außer dass Reload und Shutdown
+spürbar sauberer laufen.
+
+## v1.3.0 - Plugin Integrations: Honorific (released 2026-05-07)
 
 Erster Cycle der Plugin-Integrations-Roadmap. Honorific-Custom-
 Titles werden im Chat-Header angezeigt, mit Auto-Detect und