feat(chat): Campaign CH slice CH4 — command registry completion

Brings acdream's / and @ command parsing to parity with the complete
retail registry (130 registered verbs + 22 unregistered GetChannelID
fallback tags = 152 client-parsed verbs), per
docs/research/2026-08-09-chat-retail-command-registry.md.

Parser semantics (retail OnChatCommand/DoCommand):
- : and ; rewrite to "@emote <rest>" before dispatch.
- Verb trailing-comma trim ("@f, hi" == "@f hi") applied at every
  verb-lookup site in the catalog and the parser.
- @tell/aliases split the target on the FIRST COMMA, not the first
  whitespace token, so multi-word names work ("@tell Aunt Agatha, hi").
- The 22 unregistered GM/faction channel tags (admin, sentinel,
  celestialhand, ...) now broadcast for real via a new
  RetailChannelTagTable + SendRawChannelCmd bypass, reusing the existing
  BuildChatChannel wire builder.

Binding corrections:
- /g, /group, /party -> Fellowship (0x800), not General.
- /rp -> reply alias (retail's own help text confirms "@r or @rp"), not
  Roleplay; /role (an acdream invention) deleted.
- /allegiance, /all -> the allegiance management command
  (RetailClientCommandCatalog), not a channel verb.
- /house no longer swallows unrecognized subcommands with a local usage
  error; they now correctly fall through to ACE.
- @mr/@pr pinned as permanently non-executable (retail registers them
  with a null function pointer).

New verbs with real local execution: endurance, speaker, title (silent,
AP-182), chat, notell, join, leave, permit, hslist, index, clist, on,
off, alh/ah (+ "@allegiance hometown"/"ho"), "@allegiance info",
"@house abandon"; a missing-alias sweep across pkl/hou/message_types/
msgtypes/msg_types/rt/send/whisper/w/vassal/covassal/co-vassals/c/
fellows/group/party/guild/gu/cg/ct/clfg/crp/soc/o; the non-retail
inventions gen/cv/lookingforgroup/tr/role/h are deleted. New Core.Net
wire builders (IndexChannels, ListChannels, AddChannel, RemoveChannel,
RecallAllegianceHometown, AllegianceInfoRequest, ListAvailableHouses,
AddPlayerPermission, RemovePlayerPermission, AbandonHouse) are all
parameterless or single-field payloads cross-checked against ACE's
GameAction readers, not guessed.

Deferred (filed as #360/#361/#362, register rows TS-68/TS-69/TS-70):
the ~22 remaining allegiance/house subcommands + standalone @motd
(largest single item, needs its own slice per the doc), the three
still-inert pure-local commands (day/log/render), and the inbound
GameEvent responses for the new outbound requests. All correctly fall
through to ACE server-passthrough rather than being silently swallowed
or faking success.

RetailCommandRegistryConformanceTests pins the complete 152-verb
registry against production: every verb resolves through exactly one
production surface if Implemented, through none if HelpOnly/
ServerPassthrough, and two reverse-direction tests fail the build if
RetailClientCommandCatalog or ChatInputParser ever claims a verb
outside this registry again. Final tally: 138 Implemented / 5
ServerPassthrough / 9 HelpOnly = 152.

Release suite: 12,190 passed / 4 skipped / 0 failed (up from CH3's
11,964/4/0).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

tests/AcDream.UI.Abstractions.Tests/Panels/Chat/ChatInputParserAtPrefixTests.cs

@@ -15,11 +15,17 @@ public sealed class ChatInputParserAtPrefixTests
 {
     [Theory]
     [InlineData("@a hi gang",         ChatChannelKind.Allegiance, "hi gang")]
-    [InlineData("@allegiance recall", ChatChannelKind.Allegiance, "recall")]
+    [InlineData("@guild hi gang",     ChatChannelKind.Allegiance, "hi gang")]
     [InlineData("@p heads up",        ChatChannelKind.Patron,     "heads up")]
     [InlineData("@patron heads up",   ChatChannelKind.Patron,     "heads up")]
     [InlineData("@f buff time",       ChatChannelKind.Fellowship, "buff time")]
-    [InlineData("@g general msg",     ChatChannelKind.General,    "general msg")]
+    // Campaign CH slice CH4 (2026-08-09): "/g" moved from General to
+    // Fellowship (Tier 1 fix #1 — retail binds g/group/party to
+    // Fellowship, 0x800); "/allegiance" is DELETED from this table — it
+    // is now RetailClientCommandCatalog's allegiance MANAGEMENT command,
+    // not a channel verb (Tier 1 fix #3).
+    [InlineData("@g general msg",     ChatChannelKind.Fellowship, "general msg")]
+    [InlineData("@general general msg", ChatChannelKind.General,  "general msg")]
     public void AtPrefix_KnownChannelVerb_RoutesSameAsSlash(string raw, ChatChannelKind expected, string text)
     {
         var parsed = ChatInputParser.Parse(raw, ChatChannelKind.Say, lastTellSender: null);
@@ -62,6 +68,11 @@ public sealed class ChatInputParserAtPrefixTests
     [InlineData("@version")]
     [InlineData("@loc")]                  // ACE has @loc server-side too; passes through
     [InlineData("@nonsense filler")]
+    // "@allegiance"/"@all" are RetailClientCommandCatalog verbs (the
+    // management command), NOT ChatInputParser channel verbs — at this
+    // layer (pure Parse, no catalog check) they pass through unknown.
+    [InlineData("@allegiance boot Bob")]
+    [InlineData("@house open")]
     public void AtPrefix_UnknownVerb_PassesThroughIntactAsDefaultChannel(string raw)
     {
         // Critical: the @-prefix is preserved in Text so ACE's