fix: resolve lint and typecheck errors in API routes and tests

- Remove unused imports (users, and) from api-tokens model
- Fix password_hash destructure lint error in user routes
- Fix apiErrorResponse mock pattern in all 12 test files (use instanceof)
- Remove stale eslint-disable directives from test files
- Add eslint override for tests (no-explicit-any, no-require-imports)
- Fix unused vars in settings and tokens tests
- Fix unused tokenB in integration test

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/lib/models/api-tokens.ts

@@ -1,7 +1,7 @@
 import { createHash, randomBytes } from "node:crypto";
 import db, { nowIso, toIso } from "../db";
-import { apiTokens, users } from "../db/schema";
-import { eq, and } from "drizzle-orm";
+import { apiTokens } from "../db/schema";
+import { eq } from "drizzle-orm";
 
 export type ApiToken = {
   id: number;