chore: bump version to 1.4.7, sync changelog and forge post

- csproj <Version> -> 1.4.7
- repo.json AssemblyVersion + TestingAssemblyVersion -> 1.4.7.0
- repo.json DownloadLink{Install,Update,Testing} URLs -> /v1.4.7/
- repo.json + HellionChat.yaml changelog: prepend v1.4.7 block, retire
  v1.4.3 (slim rule keeps the last 3-4 versions)
- docs/CHANGELOG.md + docs/ROADMAP.md: v1.4.7 section, next-cycle
  pointer flipped to v1.4.8 Hook-Layer-Cycle
- README.md release badge + version stamps + Project Status block
  rewritten for v1.4.7
- .github/forge-posts/v1.4.7.md (new): DE body with subtitle
  "Backlog Cleanup and Mid-Features" / versionsnatur "Mid-Feature-Patch"
- Pin diagnostic logs (RehydratePinnedTabs / TryPin / Unpin /
  PromoteToPermanent) downgraded from Info to Debug so non-debug
  console stays quiet on release builds

docs/ROADMAP.md

@@ -10,14 +10,34 @@ the plugin's privacy-first scope during brainstorming.
 
 ---
 
-## Next Cycle (v1.4.7)
+## Next Cycle (v1.4.8)
 
-**Backlog Cleanup.** Roll up the remaining audit items deferred from v1.4.0–v1.4.6 and the new entries surfaced during
-v1.4.6 (notably the `Plugin.Log` indirection that would unlock fully isolated `MessageStore` construction tests, plus
-follow-up scope hinted at in the ChatTwo upstream f35b7d3 cherry-picks). Scope is consolidated during brainstorm.
+**Hook-Layer Cycle.** Receive-suppressed-tells toggle (cross-reference XIVIM #73 bubble-layer sub-task), Database Viewer
+full-text search via SQLite FTS5, plus preparation for the later Ad-Block cycle. Hook-layer investigation is shared
+across these items so they cluster naturally in one sub-patch.
 
 ---
 
+## v1.4.7 — Backlog Cleanup and Mid-Features (released 2026-05-13)
+
+Eighth sub-patch of the v1.4.x Polish Sweep series. First user-visible feature bundle since v1.4.5. TempTell tabs can
+now be pinned via right-click; pinned tabs survive plugin reload and character logout, keep their conversation history
+(loaded on demand from the message store on rehydrate), and stay bound to the same `/tell` partner. A hard cap of 5
+pinned tabs lives in a pool separate from the 15-tab auto-tell pool, total ceiling 20. The sidebar groups pinned tabs
+into their own section with a divider header, and the sidebar width itself is now configurable in **Theme & Layout**
+between 44 and 160 px. Honorific glow outlines render when the title carries a Glow colour, opt-in via **Settings →
+Integrations → Render glow outlines (Honorific)** (default off). Honorific's gradient (Color3 / GradientColourSet / Wave
+/ Pulse) is parsed but rendered statically — a later cycle will port the full animation algorithm or land an upstream
+IPC PR for the resolved frame colour. `Configuration.UpdateFrom` now preserves the runtime `CurrentChannel` across the
+persistent-tab merge, and `TabSwitched` deep-clones the seeded channel instead of sharing the previous tab's
+`UsedChannel` — together they fix a Settings-Save regression where the chat input could pop back to
+`/tell <pinned-partner>` after touching settings on a Party or Linkshell tab. Internal items: `IPluginLogProxy`
+indirection over Dalamud's `IPluginLog` routes all ~91 `Plugin.Log` call sites through a testable proxy, closing the
+F12.1 test-isolation gap (`MessageStore.Migrate0` runs in xUnit now). TempTab counter switched from `Interlocked` cached
+field to derived `Tabs.Count(predicate)`. Migration v16 → v17 is additive (new `Tab.IsPinned` flag). Build-Suite floor
+688 → 710 (+22 tests across Pin-lifecycle predicates, pool limits, Tab.Clone roundtrip, MessageStore Migrate0
+construction, and Honorific TitleData JSON roundtrip).
+
 ## v1.4.6 — Code Hygiene and Refactor (released 2026-05-12)
 
 Seventh sub-patch of the v1.4.x Polish Sweep series. Maintenance patch — no user-visible behaviour changes; tightens the