Implement Grumman collection and private stacked Terror choices

Add conserved token collection with four bank spice, owner-only stack selection, recovery proofs, controls and AI. Preserve unresolved removal and expansion release gates. Verified 3712 offline cases, types, lint, production build, 40 HTTP cases, three-seat desktop/mobile play, and unchanged 3081 preexisting saved games.

docs/IMPLEMENTATION_STATUS.md

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 # Dune implementation status
 
+**Grumman Collection and stacked Terror checkpoint, 10 September 2026:** [GRUMMAN_STACKED_TERROR_RUNTIME.md](GRUMMAN_STACKED_TERROR_RUNTIME.md) records one hidden-token addition with four bank spice, separate Mentat placement, private stacked-token selection, shared controls/AI and durable discard/alliance continuations. Review fixed selected-choice rewinds and restoration of a consumed Sabotage token during its genuine discard child. **3,712 offline cases, types, lint, production build and 40 HTTP/session cases pass.** Desktop/phone keyboard Collection, shipment, token selection, Robbery payment, public stack count and three-seat private refresh passed. All 3,081 preexisting room versions/hashes remained unchanged. Removal custody, occupation, unfinished effects and complete expansion games remain unresolved; no release gate opened. The existing server was reused and the removed automation stays removed.
+
 **Caladan victory reinforcement checkpoint, 10 September 2026:** [HOMEWORLD_VICTORY_REINFORCEMENT_RUNTIME.md](HOMEWORLD_VICTORY_REINFORCEMENT_RUNTIME.md) records the actual high-Caladan post-victory one-force transfer, current population and survivors, original battle location, exact native/visitor custody, owned controls and all-profile AI. Shared Ambassador arrivals preserve the original reinforcement and its nested children. Independent review reproduced and fixed arrival-to-choice rewinds and a deleted preceding cleanup choice; new revival returns also carry version-bound independent progress, while legacy completed QA saves remain readable. Final types, lint, **3,682 offline cases** (89.9 seconds), production build and **40 HTTP cases** pass. Eight Caladan production SQLite cases cover competing writes, reloads, private projections, nested arrivals and corruption. Two older Face Dance fixtures now explicitly decline the preceding guarded Caladan option, without choosing the unresolved placement order. Desktop and phone keyboard placement and three-seat refresh passed; final restart restoration passed for both Caladan and revival QA games. All **3,051** pre-existing room versions/hashes remain unchanged after restart and additive HTTP work. Low-Tupile public contact/once-per-faction quoting has seven cases but no playable disclosure action. Face Dancer ordering, guarded entry combinations, occupation, other missing effects and complete expansion games remain unfinished; no release gate opened. User workflow optimizations remain in use and automation stays removed.
 
 **Homeworld revival deployment checkpoint, 10 September 2026:** [HOMEWORLD_REVIVAL_DEPLOYMENT_RUNTIME.md](HOMEWORLD_REVIVAL_DEPLOYMENT_RUNTIME.md) records newly revived Fedaykin placement and Tleilax ordinary Free Revival deployment, exact typed groups, normal/Emperor-extra/Ghola source distinctions, owned controls and all-profile AI. Signed return, income and Ambassador completion records preserve nested arrivals and CHOAM sale restoration. Independent review found and fixed altered-offer acceptance and deleted-child premature completion. Final types, lint, **3,634 offline cases**, production build and **40 HTTP cases** pass; seven new production SQLite cases cover competing writes, lost responses, nested Ambassador restoration and corruption. The final suite also made an older auction test deterministic when the purchased Karama creates a second income responder. Desktop and phone keyboard placement, Ghola decline, refresh and three private seats passed without overflow or page errors. The hourly restart preserved all **3,050** saved room versions/hashes and restored the QA seats. First-reaching-high timing, partial/split groups, storm/arrival classification, occupation and complete expansion games remain unfinished; no release gate opened. User workflow optimizations remain in use and the automation stays removed.