Phase 5.1-5.4: PWA, Public Plugin Endpoints, Contacts Embedding, Search Coverage

5.1 Public Plugin Endpoints:
- PluginRouteDef.is_public field in manifest.py
- main.py: public routes mounted without auth dependency
- permissions/public_routes.py: token-based share link access (info, verify, download)
- permissions/plugin.py: public share route registered with is_public=True

5.2 PWA:
- vite.config.ts: VitePWA plugin configured (autoUpdate, workbox, runtime caching)
- frontend/public/manifest.json: PWA manifest with icons
- index.html: theme-color, manifest link, apple-touch-icon, apple-mobile-web-app meta
- Build generates sw.js + workbox (90 precache entries)

5.3 Contacts Embedding:
- contact.py: embedding column (Vector(768)) added to Contact model
- Migration 0002_embeddings.sql already exists (adds embedding + HNSW index)
- ContactSearchProvider already queries embedding column

5.4 Search Coverage:
- 5 new search providers: task, contactperson, tag, conversation, user
- All providers implement FTS search with tenant_id + deleted_at filters
- TagSearchProvider also supports vector search (384-dim embedding)
- provider_registry.py: all 5 new providers auto-registered
- Total: 10 search providers (was 5)

frontend/vite.config.ts

@@ -1,10 +1,62 @@
 import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
+import { VitePWA } from 'vite-plugin-pwa';
 import { resolve } from 'path';
 
 export default defineConfig({
   plugins: [
     react(),
+    VitePWA({
+      registerType: 'autoUpdate',
+      includeAssets: ['favicon.svg', 'icon-192.svg', 'icon-512.svg', 'print.css'],
+      manifest: {
+        name: 'LeoCRM',
+        short_name: 'LeoCRM',
+        description: 'Self-hosted CRM system for small sales teams',
+        theme_color: '#3b82f6',
+        background_color: '#0f172a',
+        display: 'standalone',
+        start_url: '/',
+        icons: [
+          {
+            src: '/icon-192.svg',
+            sizes: '192x192',
+            type: 'image/svg+xml',
+            purpose: 'any maskable',
+          },
+          {
+            src: '/icon-512.svg',
+            sizes: '512x512',
+            type: 'image/svg+xml',
+            purpose: 'any maskable',
+          },
+        ],
+      },
+      workboxConfig: {
+        globPatterns: ['**/*.{js,css,html,svg,png,ico,woff2}'],
+        maximumFileSizeToCacheInBytes: 5 * 1024 * 1024,
+        runtimeCaching: [
+          {
+            urlPattern: /^https:\/\/fonts\.googleapis\.com\/.*/i,
+            handler: 'CacheFirst',
+            options: {
+              cacheName: 'google-fonts-cache',
+              expiration: {
+                maxEntries: 10,
+                maxAgeSeconds: 60 * 60 * 24 * 365,
+              },
+            },
+          },
+          {
+            urlPattern: /\/_app\/api\//i,
+            handler: 'NetworkOnly',
+          },
+        ],
+      },
+      devOptions: {
+        enabled: false,
+      },
+    }),
   ],
   resolve: {
     alias: {