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/env/server.ts

@@ -49,6 +49,7 @@ const serverEnvSchema = z.object({
   VITE_DOWNLOAD_BUCKET_STRING: z.string().min(1),
   VITE_GOOGLE_CLIENT_ID: z.string().min(1),
   VITE_GOOGLE_CLIENT_ID_MAGIC_DELVE: z.string().min(1),
+  GOOGLE_CLIENT_ID: z.string().min(1),
   VITE_GITHUB_CLIENT_ID: z.string().min(1),
   VITE_WEBSOCKET: z.string().min(1),
   VITE_INFILL_ENDPOINT: z.string().min(1),
@@ -57,6 +58,9 @@ const serverEnvSchema = z.object({
   NESSA_DB_URL: z.string().min(1),
   NESSA_DB_TOKEN: z.string().min(1),
   NESSA_JWT_SECRET: z.string().min(1),
+  // p8-005: dedicated Lineage game JWT signing secret, isolated from the
+  // web JWT_SECRET_KEY so a web admin secret cannot mint Lineage tokens.
+  LINEAGE_JWT_SECRET: z.string().min(32),
   APPLE_CLIENT_ID: z.string().min(1).optional(),
   VITE_TURNSTILE_SITE_KEY: z.string().min(1),
   TURNSTILE_SECRET_KEY: z.string().min(1)
@@ -160,12 +164,14 @@ export const getMissingEnvVars = (): string[] => {
     "VITE_DOWNLOAD_BUCKET_STRING",
     "VITE_GOOGLE_CLIENT_ID",
     "VITE_GOOGLE_CLIENT_ID_MAGIC_DELVE",
+    "GOOGLE_CLIENT_ID",
     "VITE_GITHUB_CLIENT_ID",
     "VITE_WEBSOCKET",
     "REDIS_URL",
     "NESSA_DB_URL",
     "NESSA_DB_TOKEN",
-    "NESSA_JWT_SECRET"
+    "NESSA_JWT_SECRET",
+    "LINEAGE_JWT_SECRET"
   ];
 
   return requiredServerVars.filter((varName) => isMissingEnvVar(varName));