feat: add manual/auto conversation compaction and preserve full export history

src/util/messageFilter/UserMessageFilter.test.ts

@@ -287,14 +287,29 @@ describe('processUserMessage slash commands', () => {
     expect(result.pseudoAssistantResponse).toContain('chat/hotkeys.md');
   });
 
+  it('parses /compact and returns manual compaction metadata', async () => {
+    const result = await processUserMessage('/compact keep the current chord decisions');
+
+    expect(result).toMatchObject({
+      displayUserMessage: false,
+      sendToLLM: false,
+      finalMessageForLLM: null,
+      pseudoAssistantResponse: null,
+      metadata: {
+        command: 'compact',
+        focus: 'keep the current chord decisions',
+      },
+    });
+  });
+
   it('lists the new hotkeys commands for unknown slash commands', async () => {
     const result = await processUserMessage('/unknown foo');
 
     expect(storeState.setStatus).toHaveBeenCalledWith(
-      'Unknown command: /unknown. Available commands: /clear, /welcome, /help, /hotkeys, /hotkey'
+      'Unknown command: /unknown. Available commands: /clear, /welcome, /help, /hotkeys, /hotkey, /compact'
     );
     expect(result.pseudoAssistantResponse).toBe(
-      'Unknown command: /unknown foo.\nAvailable commands: /clear, /welcome, /help, /hotkeys, /hotkey'
+      'Unknown command: /unknown foo.\nAvailable commands: /clear, /welcome, /help, /hotkeys, /hotkey, /compact'
     );
     expect(result).toMatchObject({
       displayUserMessage: false,

src/util/messageFilter/UserMessageFilter.ts

@@ -218,9 +218,22 @@ export async function processUserMessage(originalMessage: string): Promise<UserM
         }
       }
 
+      case '/compact': {
+        return {
+          displayUserMessage: false,
+          sendToLLM: false,
+          finalMessageForLLM: null,
+          pseudoAssistantResponse: null,
+          metadata: {
+            command: 'compact',
+            focus: argString.trim() || undefined,
+          }
+        };
+      }
+
       default: {
         const { setStatus } = useProjectStore.getState();
-        const help = 'Available commands: /clear, /welcome, /help, /hotkeys, /hotkey';
+        const help = 'Available commands: /clear, /welcome, /help, /hotkeys, /hotkey, /compact';
         setStatus(`Unknown command: ${command}. ${help}`);
         return {
           displayUserMessage: false,