Enable Advanced classic group preview

docs/CURRENT_STATUS.md

@@ -17,13 +17,23 @@ open mode gates.
 
 ## Current checkpoint and work
 
+**Advanced classic group lobby preview — 29 October. Prototyped / Partial.**
+The explicitly selected Advanced preview now accepts the group-alliance lobby
+choice for three to six classic factions, without expansion decks or other
+optional modules. A genuine setup and Nexus journey forms a group, exercises
+bot proposals and continues to the next turn. Twenty-four related cases,
+typecheck, lint and the production build pass. Full group rules, expansion
+combinations and deployed acceptance remain open.
+[Scope](OPTIONAL_ALLIANCE_VICTORY.md#advanced-classic-group-lobby-preview--29-october-2026).
+
 **Basic classic group lobby preview — 29 October. Prototyped / Partial.**
 The host can select a visibly unfinished group-alliance variant for a fresh
 three-to-six-player Basic classic game. Start rejects incompatible modules and
 rules. A native setup and Nexus journey forms a three-member group, continues
 through the next turn and exercises legal bot proposals. Twenty-nine related
 cases, typecheck, lint and the production build pass. Full group interactions,
-expansion/Advanced entry and deployed acceptance remain open.
+expansion entry and deployed acceptance remain open; the later Advanced classic
+preview is described above.
 [Scope](OPTIONAL_ALLIANCE_VICTORY.md#basic-classic-group-lobby-preview--29-october-2026).
 
 **Group Fremen–Guild shipment promise — 29 October. Prototyped / Partial.**

docs/OPTIONAL_ALLIANCE_VICTORY.md

@@ -1,5 +1,20 @@
 # Optional three-stronghold alliance victory
 
+## Advanced classic group lobby preview — 29 October 2026
+
+**Prototyped / Partial.** The existing explicit Advanced preview can be combined
+with the group-alliance selection for three to six classic factions, without
+expansion decks or other optional modules. The host must still start using the
+explicit Advanced preview action. The selected group ledger is created during
+fresh setup; old rooms and ordinary Advanced starts retain their prior behavior.
+
+The [focused lobby journey](../tests/coalition-advanced-preview-lobby.test.ts)
+uses native setup and first-turn controls, reordering only unopened Spice cards
+to reach a Nexus. It forms a group through mutual offers and consent, checks
+legal proposals by all four bot profiles, and continues to the following Storm.
+The result is an unfinished preview, not certification of all Advanced group
+interactions, expansion combinations, complete games or deployed behavior.
+
 ## Basic classic group lobby preview — 29 October 2026
 
 **Prototyped / Partial.** A host may explicitly select a group-alliance
@@ -7,8 +22,9 @@ development preview in a fresh Basic game with three or more classic faction
 seats. The available variants are a maximum of three members with four
 strongholds, a maximum of three with three strongholds, or any number of
 members with three strongholds. Changing the setting clears human readiness.
-The separate short-alliance option, two-controller setup, Advanced, expansions
-and other optional modules are excluded from this initial lobby entry.
+The separate short-alliance option, two-controller setup, expansions and other
+optional modules are excluded from this lobby entry. The later Advanced classic
+entry is described above.
 
 Start creates the empty group ledger through the ordinary setup path; it does
 not modify existing games. Existing pair offers, unanimous group admission and
@@ -23,8 +39,8 @@ public start, setup and first-turn actions; only the unopened Spice deck order
 is chosen to reach the next Nexus. Pair formation, group consent and bot
 proposals use native actions; the resulting alliance continues through the
 following turn to the next Storm. It also covers settings, readiness and invalid
-starts. Full group games, later interactions, expansion and Advanced entry,
-and deployed acceptance remain open.
+starts. Full group games, later interactions, expansion entry and deployed
+acceptance remain open.
 
 ## Group Fremen–Guild shipment answer — 29 October 2026
 
@@ -57,7 +73,7 @@ lobby entry and broader interactions remain unfinished.
 
 ## Advanced classic group foundation — 29 October 2026
 
-**Staged prototype, not a selectable game mode.** The same group negotiation
+**Historical staged prototype.** The same group negotiation
 and donor-specific ordinary bid and shipment funding now admit Advanced games
 with only classic factions and no optional modules. Advanced group separation
 uses each actual ally and removes the ending player's shared fighters at that
@@ -72,7 +88,8 @@ The supplied revised rulebook, physical p. 42 (printed p. 40), lists the
 larger-alliance options; physical p. 15 (printed p. 13) sets the Advanced
 allied separation deadline and advisor exception. This does not certify full
 Advanced group play, expansion factions, optional modules, all faction
-interactions or complete games. No lobby enables a group ledger.
+interactions or complete games. The later Advanced lobby preview is described
+above.
 
 Twenty related files pass 143 cases. Two genuine public Advanced setups reach
 the original Nexus and form groups after only the empty group ledger is staged;