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/server/api/routers/lineage/database.ts

@@ -6,7 +6,7 @@ import {
 } from "~/server/utils";
 import { env } from "~/env/server";
 import { TRPCError } from "@trpc/server";
-import { createTRPCRouter, publicProcedure } from "~/server/api/utils";
+import { createTRPCRouter, publicProcedure, csrfProtectedProcedure } from "~/server/api/utils";
 import {
   fetchWithTimeout,
   checkResponse,
@@ -19,7 +19,7 @@ export const lineageDatabaseRouter = createTRPCRouter({
   // credentials endpoint removed (p8-008): was exposing persistent DB tokens to clients.
   // Database access should be proxied through tRPC server-side procedures.
 
-  deletionInit: publicProcedure
+  deletionInit: csrfProtectedProcedure
     .input(
       z.object({
         email: z.string().email(),
@@ -226,7 +226,7 @@ export const lineageDatabaseRouter = createTRPCRouter({
       }
     }),
 
-  deletionCheck: publicProcedure
+  deletionCheck: csrfProtectedProcedure
     .input(z.object({ email: z.string().email() }))
     .mutation(async ({ input }) => {
       const { email } = input;
@@ -256,7 +256,7 @@ export const lineageDatabaseRouter = createTRPCRouter({
       }
     }),
 
-  deletionCancel: publicProcedure
+  deletionCancel: csrfProtectedProcedure
     .input(
       z.object({
         email: z.string().email(),