[daliu]

Refs #707; does not close until hosted acceptance. Officer impact: A staging-only screen submits pending membership requests/withdrawal and paid-term cancellation intent, and manages free-event signup/cancel. Signup never activates dues or claims. Officer documentation: docs/officers/STAGING_COMMUNITY.md plus entrypoints/maps/cost guide and engineering roots. Deployment evidence: not yet hosted; production and real payments excluded. One isolated communityActions callable/entrypoint; native Auth/App Check, verified mutation account, explicit UID context binding, closed inputs, transactional capacity and saved command/revision fences. No payment/email/role/admin/schedule/dependency change; no legacy migration. Dedicated staging runtime created with exactly four Firestore transaction/get/create/update permissions (project scope, not collection scope); profile IAM unchanged. Fixed owner-only release/Hosting scripts require exact main and six green CI jobs, explicit identities, archive readback, bounded resources and staging-only public configuration. Profile release can inspect but never deploy the one new service. Local evidence: backend7640 pass/66 skipped, frontend1356 pass plus new event UI regression, Rules424 pass, real emulator 20-way final-seat and concurrent cancel plus membership retries/exact expiry, native SDK denials, release guard20 cases, successful diagnostic TypeScript/build and staging artifact verification. Lint snapshot adds four files but no new findings; existing113 errors/6 warnings unchanged. Backup-officer review: clear staging banner/actions/stops, no terminal or secret/data workaround; specialist still supplies/removes fixtures. Hosted browser/race/ownership/source/IAM/cleanup evidence remains required. Rollback is staging-only owner removal/revert of this service; no production operation.

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[daliu]

Self-review completed under Dave’s explicit sole-maintainer review/merge override. Reviewed exact head f6c521c: native Auth/App Check, verified mutations and own-account binding, closed typed inputs, transaction read-before-write/capacity, revision and immutable retry receipts, expiry/evidence preservation, no browser writes/roster, bounded reads/rates/resources, redacted failures, fixed source bundle and staging-only owner/quota/runtime/build/Hosting path. Fixed non-string event identifiers and explicit staging quota routing. All six exact-head CI jobs and their steps pass in run38185624900; root safety suite158 passed locally before the quota test, then affected34 passed; no new lint finding/dependency. Production release manifest remains inactive. Officer impact: disposable staging actions only; no paid activation/refund. Officer documentation: STAGING_COMMUNITY.md and listed roots/maps. Deployment evidence: source/CI only at this point; staged native archive, UI and cleanup still required. No production/payment operation authorized.