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/package.json

@@ -0,0 +1,30 @@
+{
+	"name": "@manacore/shared-hono",
+	"version": "0.1.0",
+	"private": true,
+	"description": "Shared Hono infrastructure: auth, health, admin, error handling for lightweight compute servers",
+	"type": "module",
+	"main": "./src/index.ts",
+	"types": "./src/index.ts",
+	"exports": {
+		".": "./src/index.ts",
+		"./auth": "./src/auth.ts",
+		"./db": "./src/db.ts",
+		"./health": "./src/health.ts",
+		"./admin": "./src/admin.ts",
+		"./error": "./src/error.ts"
+	},
+	"scripts": {
+		"type-check": "tsc --noEmit"
+	},
+	"dependencies": {
+		"hono": "^4.7.0",
+		"jose": "^6.0.11",
+		"drizzle-orm": "^0.45.1",
+		"postgres": "^3.4.5"
+	},
+	"devDependencies": {
+		"@types/node": "^24.10.1",
+		"typescript": "^5.9.3"
+	}
+}