batch4: chats-in-sessions, force-send, /compact, right-rail file browser

Session 1:N Chat data model with backfill. Workspace switches to client-side
multi-tab pane management. Right-rail file browser with float-over viewer and
click-drag line selection replaces FileBrowserPane. Adds /compact streaming
summarizer (respects compact markers in context builder), force-send (cancels
in-flight, persists partial as 'cancelled', awaits cancellation completion via
deferred Promise + 5s timeout), message queue, stop generation, chat
auto-rename, session archive/unarchive with Closed Sessions section on repo
landing page. CHECK constraints on sessions.status, messages.role,
messages.status with KEEP IN SYNC comments tying to MESSAGE_ROLES /
MESSAGE_STATUSES const arrays. Deletes dead pane routes/hook and the
api.panes.* client block.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/server/src/index.ts

@@ -5,15 +5,15 @@ import { existsSync } from 'node:fs';
 import { resolve } from 'node:path';
 import { loadConfig } from './config.js';
 import { getSql, applySchema, pingDb, closeDb } from './db.js';
-import { registerAuth } from './auth.js';
+
 import { registerProjectRoutes } from './routes/projects.js';
 import { registerSessionRoutes } from './routes/sessions.js';
 import { registerSettingsRoutes } from './routes/settings.js';
 import { registerMessageRoutes } from './routes/messages.js';
+import { registerChatRoutes } from './routes/chats.js';
 import { registerSidebarRoutes } from './routes/sidebar.js';
 import { registerWebSocket } from './routes/ws.js';
 import { registerModelRoutes } from './routes/models.js';
-import { registerPaneRoutes } from './routes/panes.js';
 import { createInferenceRunner } from './services/inference.js';
 import { createBroker } from './services/broker.js';
 
@@ -30,8 +30,6 @@ async function main() {
 
   await app.register(fastifyWebsocket);
 
-  registerAuth(app);
-
   app.get('/api/health', async () => {
     const dbOk = await pingDb(sql);
     return { status: dbOk ? 'ok' : 'degraded', db: dbOk };
@@ -44,7 +42,7 @@ async function main() {
   registerSettingsRoutes(app, sql);
   registerModelRoutes(app, config);
   registerSidebarRoutes(app, sql);
-  registerPaneRoutes(app, sql);
+  registerChatRoutes(app, sql, broker);
 
   const inference = createInferenceRunner(
     {
@@ -60,29 +58,39 @@ async function main() {
     }
   );
   registerMessageRoutes(app, sql, {
-    enqueueInference: (sessionId, assistantId, user) => {
-      inference.enqueue(sessionId, assistantId, user);
+    enqueueInference: (sessionId, chatId, assistantId, user) => {
+      inference.enqueue(sessionId, chatId, assistantId, user);
     },
-    publishUserMessage: (sessionId, userMessageId, content) => {
+    enqueueCompact: (sessionId, chatId, compactId, user) => {
+      inference.enqueueCompact(sessionId, chatId, compactId, user);
+    },
+    cancelInference: async (sessionId, chatId) => {
+      return inference.cancel(sessionId, chatId);
+    },
+    publishUserMessage: (sessionId, chatId, userMessageId, content) => {
       broker.publish(sessionId, {
         type: 'message_started',
         message_id: userMessageId,
+        chat_id: chatId,
         role: 'user',
       });
       broker.publish(sessionId, {
         type: 'delta',
         message_id: userMessageId,
+        chat_id: chatId,
         content,
       });
       broker.publish(sessionId, {
         type: 'message_complete',
         message_id: userMessageId,
+        chat_id: chatId,
       });
     },
-    publishMessagesDeleted: (sessionId, messageIds) => {
+    publishMessagesDeleted: (sessionId, chatId, messageIds) => {
       broker.publish(sessionId, {
         type: 'messages_deleted',
         message_ids: messageIds,
+        chat_id: chatId,
       });
     },
   });