fix: keep session export and TUI layout tests aligned

Omit reconstructable notify state from session zips, record the
file-history REST routes in the API snapshot, and count the notify
and survey dock children in the TUI layout tests.

Author: elkaix

apps/pythinker-code/test/tui/pythinker-tui-message-flow.test.ts

@@ -4632,9 +4632,12 @@ command = "vim"
     const transcript = stripSgr(renderTranscript(driver));
     const panel = stripSgr(renderBtwPanel(driver));
     const rootChildren = driver.state.ui.children;
-    expect(rootChildren.indexOf(driver.state.btwPanelContainer)).toBe(
+    expect(rootChildren.indexOf(driver.state.surveyContainer)).toBe(
       rootChildren.indexOf(driver.state.editorContainer) - 1,
     );
+    expect(rootChildren.indexOf(driver.state.btwPanelContainer)).toBe(
+      rootChildren.indexOf(driver.state.surveyContainer) - 1,
+    );
     expect(transcript).toContain('main answer after btw');
     expect(transcript).not.toContain('side answer');
     expect(panel).toContain('BTW');

apps/pythinker-code/test/tui/pythinker-tui-startup.test.ts

@@ -335,8 +335,8 @@ describe('PythinkerTUI startup', () => {
     await expect(driver.init()).resolves.toBe(false);
     (driver as unknown as { mountFooter(): void }).mountFooter();
 
-    // Dock = 5 chrome containers + footer wrap, below the transcript viewport.
-    expect(driver.state.dockContainer?.children).toHaveLength(6);
+    // Dock = activity, todo, notify, queue, btw, survey, editor, footer wrap.
+    expect(driver.state.dockContainer?.children).toHaveLength(8);
   });
 
   it('shows a session-less notice on v2 startup', async () => {

packages/agent-core-v2/src/app/sessionExport/sessionExportService.ts

@@ -203,10 +203,11 @@ export async function exportSessionDirectory(input: {
 
     const sessionScan = await scanSessionWire(sessionDir, input.signal);
     const stableSessionLog = sessionLogSource;
-    const selectedSessionFiles: SessionZipEntry[] = sessionFiles.filter(
-      (file) =>
-        file !== sessionLogPath && !file.split(/[\\/]/).includes(FILE_HISTORY_BLOB_PREFIX),
-    );
+    const selectedSessionFiles: SessionZipEntry[] = sessionFiles.filter((file) => {
+      if (file === sessionLogPath) return false;
+      const parts = file.split(/[\\/]/);
+      return !parts.includes(FILE_HISTORY_BLOB_PREFIX) && !parts.includes('notify');
+    });
     if (stableSessionLog !== undefined) {
       selectedSessionFiles.push({ path: sessionLogPath, source: stableSessionLog });
       selectedSessionFiles.sort((left, right) =>

packages/agent-core-v2/test/app/sessionExport/sessionExport.test.ts

@@ -143,6 +143,22 @@ describe('sessionExport', () => {
     });
   });
 
+  it('omits derived notify state from the archive', async () => {
+    const tmp = await mkdtemp(join(tmpdir(), 'session-export-notify-'));
+    const sessionDir = join(tmp, 'sessions', 'ws_demo', 'ses_notify');
+    await mkdir(join(sessionDir, 'notify'), { recursive: true });
+    await writeFile(join(sessionDir, 'state.json'), '{}\n', 'utf-8');
+    await writeFile(join(sessionDir, 'notify', 'state.json'), '{"enabled":true}\n', 'utf-8');
+
+    const result = await exportSessionDirectory({
+      request: { sessionId: 'ses_notify', outputPath: join(tmp, 'export.zip'), version: '1.0.0-test' },
+      summary: { id: 'ses_notify', sessionDir },
+    });
+
+    expect(result.entries).toEqual(['manifest.json', 'state.json']);
+    expect(result.entries.some((entry) => entry.includes('notify'))).toBe(false);
+  });
+
   it('uses a timestamped default output path when outputPath is omitted', async () => {
     const tmp = await mkdtemp(join(tmpdir(), 'session-export-test-'));
     const sessionDir = join(tmp, 'sessions', 'ws_demo', 'ses_default_output');

packages/agent-gateway/test/__snapshots__/apiSurface.snapshot.test.ts.snap

@@ -204,6 +204,14 @@ exports[`API surface snapshot > matches the documented v2 route table and meta e
       "GET",
       "/api/v1/sessions/{session_id}/expert-talk/runs/{run_id}",
     ],
+    [
+      "GET",
+      "/api/v1/sessions/{session_id}/file-history/changes",
+    ],
+    [
+      "GET",
+      "/api/v1/sessions/{session_id}/file-history/content",
+    ],
     [
       "GET",
       "/api/v1/sessions/{session_id}/fs/{*}",