refactor(infra): remove zitare + clock NestJS backends, add shared-hono package

Both apps are fully local-first via Dexie.js + mana-sync. Their NestJS
backends were pure CRUD wrappers (20 + 31 source files) that are no
longer needed.

Changes:
- Add packages/shared-hono: JWT auth via JWKS (jose), Drizzle DB factory,
  health route, generic GDPR admin handler, error middleware
- Migrate zitare lists page from fetch() to listsStore (local-first)
- Rewrite clock timers store from API-based to timerCollection (Dexie)
- Update clock +layout.svelte CommandBar search to use local collections
- Remove zitare-backend + clock-backend from docker-compose, CI/CD,
  Prometheus, env generation, setup scripts
- Add docs/TECHNOLOGY_AUDIT_2026_03.md with full repo analysis

Net result: -2 Docker containers, -2 ports, -2728 lines of code

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

packages/shared-hono/src/index.ts

@@ -0,0 +1,41 @@
+/**
+ * @manacore/shared-hono — Shared infrastructure for Hono + Bun compute servers.
+ *
+ * Replaces NestJS boilerplate (Module, Controller, Guard, HealthModule, MetricsModule)
+ * with lightweight Hono equivalents.
+ *
+ * Usage:
+ * ```ts
+ * import { Hono } from 'hono';
+ * import { cors } from 'hono/cors';
+ * import { logger } from 'hono/logger';
+ * import { authMiddleware, serviceAuthMiddleware } from '@manacore/shared-hono/auth';
+ * import { createDb } from '@manacore/shared-hono/db';
+ * import { healthRoute } from '@manacore/shared-hono/health';
+ * import { adminRoutes } from '@manacore/shared-hono/admin';
+ * import { errorHandler, notFoundHandler } from '@manacore/shared-hono/error';
+ *
+ * const app = new Hono();
+ * app.onError(errorHandler);
+ * app.notFound(notFoundHandler);
+ * app.use('*', logger());
+ * app.use('*', cors({ origin: process.env.CORS_ORIGINS?.split(',') ?? ['http://localhost:5173'] }));
+ *
+ * app.route('/health', healthRoute('my-server'));
+ * app.use('/api/*', authMiddleware());
+ * app.route('/api/v1/admin', adminRoutes(db, userTables));
+ *
+ * // App-specific compute routes
+ * app.route('/api/v1/compute', myRoutes);
+ *
+ * export default { port: Number(process.env.PORT ?? 3019), fetch: app.fetch };
+ * ```
+ */
+
+export { authMiddleware, serviceAuthMiddleware } from './auth';
+export { createDb } from './db';
+export type { DbOptions } from './db';
+export { healthRoute } from './health';
+export { adminRoutes } from './admin';
+export { errorHandler, notFoundHandler } from './error';
+export type { CurrentUserData, AuthVariables } from './types';