Fix API lint errors blocking CI

eslint has been failing on 11 no-explicit-any errors, which kept the
whole pipeline red — including the new publish job that waits on lint.

The casts all worked around missing types rather than unknown shapes:

- jwt: @fastify/jwt decorates the instance at runtime, so the namespace
  is not in FastifyInstance's type. Described the parts we call and cast
  through unknown once, in one place, instead of `as any` at five sites.
- permissions: FastifyInstance.db is declared by the db plugin; the cast
  was stale and hid the real type.
- paginate: the querystring schema already validates page/perPage, so
  the call sites now name that shape via PaginationQuery.

Also dropped an unused import and an unused binding whose call is kept
for its validation side effect.

No behaviour change: eslint and tsc are both clean.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

apps/api/src/routes/organizations/index.ts

@@ -4,6 +4,7 @@ import { organizations, organizationMembers, users } from '@source/database';
 import { AppError } from '../../lib/errors.js';
 import { requirePermission, getOrgMembership } from '../../lib/permissions.js';
 import { paginate, paginatedResponse, PaginationQuerySchema } from '../../lib/pagination.js';
+import type { PaginationQuery } from '../../lib/pagination.js';
 import { createAuditLog } from '../../lib/audit.js';
 import {
   CreateOrgSchema,
@@ -20,7 +21,7 @@ export default async function organizationRoutes(app: FastifyInstance) {
 
   // GET /api/organizations — list user's organizations
   app.get('/', { schema: { querystring: PaginationQuerySchema } }, async (request) => {
-    const { page, perPage, offset, limit } = paginate(request.query as any);
+    const { page, perPage, offset, limit } = paginate(request.query as PaginationQuery);
     const userId = request.user.sub;
 
     if (request.user.isSuperAdmin) {