release: bump to v1.4.10

docs/CHANGELOG.md

@@ -10,6 +10,31 @@ to the release pages for details.
 
 ---
 
+## Hellion Chat 1.4.10 — Symbol-Picker and Tell-History Fix (2026-05-16)
+
+Eleventh and final sub-patch of the v1.4.x Polish-Sweep series. Symbol picker for the chat input, a tell-history reload fix
+for users with many active partners, and a closing cleanup sweep before v1.5.0 picks up the DI-container adoption.
+
+- Symbol picker for the chat input: smile-icon button left of the channel indicator opens a popup with two tabs —
+  161 FFXIV PUA glyphs (Dalamud's SeIconChar enum) and 97 server-verified BMP symbols round-tripped through `/echo` and
+  `/say` in a four-round probe. Cursor-aware splice, multi-insert keeps the popup open, recent-used strip floats the last
+  sixteen picks across both tabs. Toggle in Settings → Chat → Message behaviour, default on.
+- Pinned auto-tell tabs reload their full history again. PreloadHistory had a hidden 500-row scan cap that overrode the
+  user-configurable `AutoTellTabsHistoryPreload` setting whenever you chatted with many partners; less-frequent pinned
+  partners lost their backlog. The cap is removed.
+- Slash-command teardown cleanup: `/hellion`, `/hellionView`, `/hellionDebugger` (and `#if DEBUG /hellionSeString`) wrappers
+  are now cached as private fields so plugin teardown detaches the live registration instead of re-Register'ing with
+  identical args (latent maintenance hazard from v1.4.9).
+- v1.4.x Polish-Sweep wraps up here. The ImGuiListClipper render refactor that was on the v1.4.10 reserve list got dropped
+  after cross-platform smoke showed the scroll rubber-band is a Wine/Linux render-pipeline quirk, not universal — Windows
+  users never saw it. It will get its own platform-targeted spike in a later patch. Next major cycle is v1.5.0 with the
+  DI-container adoption (Microsoft.Extensions.Hosting + ILogger<T>) modelled on Lightless.
+- Migration v17 stays (no schema bump).
+
+Based on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).
+
+---
+
 ## Hellion Chat 1.4.9 — Plugin-Load Render Polish (2026-05-15)
 
 Tenth sub-patch of the v1.4.x polish-sweep series. First-frame render cost drops from ~127 ms median down to