docs(changelog): document v12 -> v13 tab reset and pre-v13 backup

Adds a "Default tab layout sharpened" block between the Safety and
Crash-class sections in both yaml and repo.json. Explains the new
five-tab structure, calls out that the reset is one-time, that all
non-tab settings are preserved, and that the live config is backed
up to pluginConfigs/HellionChat.json.pre-v13-backup before the wipe
so users can restore manually.

The actual code change shipped in the previous commit; this commit
is purely the user-facing communication so the in-game migration
notification has matching written context.

HellionChat/HellionChat.yaml

@@ -83,6 +83,26 @@ changelog: |-
   - NuGet restore now honors packages.lock.json so transitive
     dependencies don't drift between machines or CI runs
 
+  Default tab layout sharpened (one-time tab reset on first start):
+
+  The first-run tab layout is reorganized into five thematic tabs
+  based on external tester feedback. General contains only Say,
+  Yell and Shout (immediate-surroundings public chat). System
+  absorbs the gameplay-event streams (NpcDialogue, Loot, Crafting,
+  Gathering, PF recruitment pings) and announcement noise
+  (BattleSystem, FreeCompanyAnnouncement, PvpTeamAnnouncement)
+  that previously lived in General. FreeCompany, Group and
+  Linkshell each own their channel set. The static Tell tab is
+  gone — Auto-Tell-Tabs spawns per-conversation tabs on demand.
+  The Beginner / Novice-Network preset is no longer added by
+  default but is still available via Settings, Tabs.
+
+  This is a one-time tab-layout reset for users on config version
+  12 or older. Privacy, Retention, Theme and every other setting
+  is preserved. Your previous tab configuration is written to
+  pluginConfigs/HellionChat.json.pre-v13-backup so you can restore
+  it manually if you prefer the old layout.
+
   Crash-class fixes (formerly latent in upstream):
 
   - MathUtil.HasOverlap now uses a correct AABB test; identical or

repo.json

@@ -20,7 +20,7 @@
     "CanUnloadAsync": false,
     "LoadPriority": 0,
     "Punchline": "Chat replacement with privacy controls aligned to EU, US and JP rules — based on Chat 2 (EUPL-1.2)",
-    "Changelog": "**Hellion Chat 1.0.0 — Standalone Major Release**\n\nFirst fully standalone release. Internal cleanup plus a sweep of\npre-existing correctness, security, threading and resource-leak\nfixes carried over from the upstream codebase. No user action\nrequired — auto-update applies cleanly, configuration and database\npaths unchanged.\n\nStandalone identity:\n\n- Code namespace consolidated from ChatTwo.* to HellionChat.* across\n  all source files\n- IPC channels migrated from ChatTwo.* to HellionChat.* (6 channels:\n  Register, Available, Unregister, Invoke, GetChatInputState,\n  ChatInputStateChanged) — third-party plugins that bound to the old\n  channels need to be updated; none known at release time\n- ImGui popup ID renamed to hellionchat-context-popup\n- Repository folder restructured (ChatTwo/ → HellionChat/), all CI\n  and build paths updated accordingly\n- Public-facing descriptions reworded from upstream-fork framing to\n  standalone framing (Chat 2 attribution preserved per EUPL-1.2)\n- Colour preset 'ChatTwo Default' is now 'Klassik (Chat 2 Default)'\n\nSafety:\n\n- Plugin now refuses to load when upstream Chat 2 is also active —\n  bilingual conflict message in EN/DE, throw before any subsystem\n  initialization, prevents the runtime crash that previously occurred\n  when both plugins replaced the same chat window in parallel\n- SQLite native binary bumped to 3.50.3 (CVE-2025-6965 memory\n  corruption from aggregate-term overflow, CVE-2025-7709)\n- NuGet restore now honors packages.lock.json so transitive\n  dependencies don't drift between machines or CI runs\n\nCrash-class fixes (formerly latent in upstream):\n\n- MathUtil.HasOverlap now uses a correct AABB test; identical or\n  edge-touching rectangles are no longer reported as non-overlapping\n- ChatCode.Equals compares fields directly instead of GetHashCode;\n  removes the hash-collision anti-pattern\n- IpcManager.Dispose uses UnregisterAction to match the matching\n  RegisterAction call; previous mismatch leaked the action\n  subscription on every plugin reload\n- ExtraChat.Dispose now unsubscribes all three IPC subscriptions\n  (was only the first); leaks closed\n- TellTarget.FromTarget guards against a zero IPlayerCharacter.Address\n  before dereferencing the unsafe Character* cast\n- GameFunctions ResolveTextCommandPlaceholderDetour null-checks the\n  Hook reference instead of using the null-forgiving operator\n- Popout.cs and SettingsTabs/Tabs.cs bounds-check list indexing so\n  a tab drop or empty-worlds list no longer crashes the UI\n- Debugger.cs now declares IDisposable so the existing Dispose runs\n\nCorrectness fixes:\n\n- GlobalParametersCache.GetValue captures Cache into a local before\n  the bounds check, so a concurrent Refresh can't slip a different\n  array between check and read\n- IconUtil binary search bounds initialized to entries.Length-1 and\n  reset on redirect-restart; entries.Length==0 short-circuits\n- Sheets.WorldsOnDatacenter now compares DataCenter.RowId (was\n  Region.RowId) so it actually returns same-DC worlds\n- Message.cs back-reference loop iterates the processed Sender/Content\n  properties so chunks added by CheckMessageContent get Message set\n- Language.zh-Hans Webinterface_Start_Success corrected to\n  \"网页界面已启动\" (was \"网页界面已停止\")\n\nThreading and async:\n\n- AutoTranslate Entries/ValidEntries are now serialized behind a\n  single lock; the preload worker thread and main thread no longer\n  race on the underlying dictionary/hash set\n- Privacy retention and cleanup workers bound their framework-refresh\n  waits to 5 seconds with a logged timeout; a hung framework tick can\n  no longer deadlock the background worker\n\nResource handling:\n\n- EmoteCache reuses the static HttpClient instead of allocating a new\n  one per call (closed socket leak)\n- FontManager wraps HttpClient/HttpResponseMessage in using-blocks\n  and adds EnsureSuccessStatusCode; failed downloads no longer\n  silently produce a zero-byte font file\n- SearchSelector mixes the row index into the ImGui ID stack so\n  selectables don't collapse to a single ambiguous ID\n- SettingsTabs/Chat blocked-emote add-button now opens its selector\n  popup on left-click\n\nPerformance:\n\n- DbViewer text export caches filteredHistory.Count once instead of\n  re-enumerating the IEnumerable on every batch (O(N) instead of\n  O(N²) on large histories)\n\nLicense attribution (NOTICE.md, COPYRIGHT, THIRD_PARTY_NOTICES.md\nand the Credits section in README) is unchanged.\n\nBased on Chat 2 1.35.3 (upstream Infiziert90/ChatTwo, EUPL-1.2).\n\n**Hellion Chat 0.6.1 — Pop-Out Discoverability & /tell Auto-Pop-Out**\n\n- Pop-out button now visible in the chat header (no more hunting through the right-click menu)\n- One-time hint banner explains pop-out tabs and the right-click shortcut\n- New setting: open new /tell tabs directly as pop-out windows (Settings → Chat → Auto-Tell-Tabs)\n- Pop-out inpuLine truncated
+    "Changelog": "**Hellion Chat 1.0.0 — Standalone Major Release**\n\nFirst fully standalone release. Internal cleanup plus a sweep of\npre-existing correctness, security, threading and resource-leak\nfixes carried over from the upstream codebase. No user action\nrequired — auto-update applies cleanly, configuration and database\npaths unchanged.\n\nStandalone identity:\n\n- Code namespace consolidated from ChatTwo.* to HellionChat.* across\n  all source files\n- IPC channels migrated from ChatTwo.* to HellionChat.* (6 channels:\n  Register, Available, Unregister, Invoke, GetChatInputState,\n  ChatInputStateChanged) — third-party plugins that bound to the old\n  channels need to be updated; none known at release time\n- ImGui popup ID renamed to hellionchat-context-popup\n- Repository folder restructured (ChatTwo/ → HellionChat/), all CI\n  and build paths updated accordingly\n- Public-facing descriptions reworded from upstream-fork framing to\n  standalone framing (Chat 2 attribution preserved per EUPL-1.2)\n- Colour preset 'ChatTwo Default' is now 'Klassik (Chat 2 Default)'\n\nSafety:\n\n- Plugin now refuses to load when upstream Chat 2 is also active —\n  bilingual conflict message in EN/DE, throw before any subsystem\n  initialization, prevents the runtime crash that previously occurred\n  when both plugins replaced the same chat window in parallel\n- SQLite native binary bumped to 3.50.3 (CVE-2025-6965 memory\n  corruption from aggregate-term overflow, CVE-2025-7709)\n- NuGet restore now honors packages.lock.json so transitive\n  dependencies don't drift between machines or CI runs\n\nDefault tab layout sharpened (one-time tab reset on first start):\n\nThe first-run tab layout is reorganized into five thematic tabs\nbased on external tester feedback. General contains only Say,\nYell and Shout (immediate-surroundings public chat). System\nabsorbs the gameplay-event streams (NpcDialogue, Loot, Crafting,\nGathering, PF recruitment pings) and announcement noise\n(BattleSystem, FreeCompanyAnnouncement, PvpTeamAnnouncement)\nthat previously lived in General. FreeCompany, Group and\nLinkshell each own their channel set. The static Tell tab is\ngone — Auto-Tell-Tabs spawns per-conversation tabs on demand.\nThe Beginner / Novice-Network preset is no longer added by\ndefault but is still available via Settings, Tabs.\n\nThis is a one-time tab-layout reset for users on config version\n12 or older. Privacy, Retention, Theme and every other setting\nis preserved. Your previous tab configuration is written to\npluginConfigs/HellionChat.json.pre-v13-backup so you can restore\nit manually if you prefer the old layout.\n\nCrash-class fixes (formerly latent in upstream):\n\n- MathUtil.HasOverlap now uses a correct AABB test; identical or\n  edge-touching rectangles are no longer reported as non-overlapping\n- ChatCode.Equals compares fields directly instead of GetHashCode;\n  removes the hash-collision anti-pattern\n- IpcManager.Dispose uses UnregisterAction to match the matching\n  RegisterAction call; previous mismatch leaked the action\n  subscription on every plugin reload\n- ExtraChat.Dispose now unsubscribes all three IPC subscriptions\n  (was only the first); leaks closed\n- TellTarget.FromTarget guards against a zero IPlayerCharacter.Address\n  before dereferencing the unsafe Character* cast\n- GameFunctions ResolveTextCommandPlaceholderDetour null-checks the\n  Hook reference instead of using the null-forgiving operator\n- Popout.cs and SettingsTabs/Tabs.cs bounds-check list indexing so\n  a tab drop or empty-worlds list no longer crashes the UI\n- Debugger.cs now declares IDisposable so the existing Dispose runs\n\nCorrectness fixes:\n\n- GlobalParametersCache.GetValue captures Cache into a local before\n  the bounds check, so a concurrent Refresh can't slip a different\n  array between check and read\n- IconUtil binary search bounds initialized to entries.Length-1 and\n  reset on redirect-restart; entries.Length==0 short-circuits\n- Sheets.WorldsOnDatacenter now compares DataCenter.RowId (was\n  Region.RowId) so it actually returns same-DC worlds\n- Message.cs back-reference loop iterates the processed Sender/Content\n  properties so chunks added by CheckMessageContent get Message set\n- Language.zh-Hans Webinterface_Start_Success corrected to\n  \"网页界面已启动\" (was \"网页界面已停止\")\n\nThreading and async:\n\n- AutoTranslate Entries/ValidEntries are now serialized behind a\n  single lock; the preload worker thread and main thread no longer\n  race on the underlying dictionary/hash set\n- Privacy retention and cleanup workers bound their framework-refresh\n  waits to 5 seconds with a logged timeout; a hung framework tick can\n  no longer deadlock the background worker\n\nResource handling:\n\n- EmoteCache reuses the static HttpClient instead of allocating a new\n  one per call (closed socket leak)\n- FontManager wraps HttpClient/HttpResponseMessage in using-blocks\n  and addsLine truncated
     "AcceptsFeedback": true,
     "DownloadLinkInstall": "https://github.com/JonKazama-Hellion/HellionChat/releases/download/v1.0.0/latest.zip",
     "DownloadLinkUpdate": "https://github.com/JonKazama-Hellion/HellionChat/releases/download/v1.0.0/latest.zip",