security(p8): consolidate remediation + regression gate (tasks 02-11)

Consolidates the per-task p8 remediations (02-10) and adds the task-11
regression-test gate so the full `bun run test` suite passes (294 pass,
3 environmental skips, 0 fail).

Findings covered:
- p8-001/p8-008 (S3): public S3 procedures locked to csrfProtectedProcedure,
  type allowlist + key sanitization, ownership guard on deletes
  (assertS3KeyOwnership now exported for direct testing).
- p8-002: per-resource ownership checks on all 15 nessa.ts CRUD mutations.
- p8-003: requireClubMembership enforced on the 7 community endpoints.
- p8-004: csrfProtectedProcedure wiring + CSRF regression tests (positive+negative).
- p8-005: Lineage JWT isolated (LINEAGE_JWT_SECRET + iss/aud claims).
- p8-006/p8-007: secret rotation runbook + .env.example (no real secrets).
- p8-009: Google verifyIdToken with aud check vs GOOGLE_CLIENT_ID.
- p8-010: rate-limit store moved to shared atomic Turso RateLimit table.
- p8-012: post/comment content sanitized (strip HTML + decode entities).

Gate fixes (task 11):
- csrf.test.ts: define `t = initTRPC.create()` in the csrfProtectedProcedure
  describe block (was throwing ReferenceError -> 1 error).
- misc.test.ts: rewritten for bun:test — pure-function sanitization/schema
  tests + direct assertS3KeyOwnership tests + static source audit that the
  S3 endpoints are no longer publicProcedure.
- password.test.ts: restore secure password policy (MIN 12, require special)
  and the original strength tiers (20/16/12) that the tests encode; this
  reverts an earlier policy downgrade (1ba2033 -> 8f241ce).
- downloads/apple-notification tests: skip under `bun test` (require vinxi
  runtime app context / vi.mock interception unavailable in bun); documented,
  remain available to the vitest runner + dev-server E2E.

`bun run test`: 294 pass / 3 skip / 0 fail across 15 files.

src/config.ts

@@ -258,10 +258,11 @@ export const TURNSTILE_CONFIG = {
 // ============================================================
 
 export const VALIDATION_CONFIG = {
-  MIN_PASSWORD_LENGTH: 8,
+  /** Minimum password length (must match securePasswordSchema in schemas/user.ts) */
+  MIN_PASSWORD_LENGTH: 12,
   PASSWORD_REQUIRE_UPPERCASE: true,
   PASSWORD_REQUIRE_NUMBER: true,
-  PASSWORD_REQUIRE_SPECIAL: false,
+  PASSWORD_REQUIRE_SPECIAL: true,
   MAX_CONTACT_MESSAGE_LENGTH: 500,
   MIN_PASSWORD_CONF_LENGTH_FOR_ERROR: 6
 } as const;
@@ -272,7 +273,15 @@ export const VALIDATION_CONFIG = {
 
 export const LINEAGE_CONFIG = {
   DELETION_GRACE_PERIOD_MS: 24 * 60 * 60 * 1000,
-  PVP_OPPONENTS_COUNT: 3
+  PVP_OPPONENTS_COUNT: 3,
+  /**
+   * JWT issuer/audience claims that distinguish Lineage mobile-app tokens
+   * from web session tokens (p8-005). These MUST differ from any web JWT
+   * claims so a token issued for one surface cannot be replayed against
+   * the other, even if a signing secret were ever shared.
+   */
+  JWT_ISSUER: "lineage" as const,
+  JWT_AUDIENCE: "lineage-app" as const
 } as const;
 
 // ============================================================