Fix logs API test by including lastModified in all responses

- Add lastModified: null when log file doesn't exist
- Ensures consistent API response structure

mac/VibeTunnel/Core/Services/WindowTracker.swift

@@ -139,6 +139,8 @@ final class WindowTracker {
             return []
         }
         
+        let logger = Logger(subsystem: "sh.vibetunnel.vibetunnel", category: "WindowTracker")
+
         return windowList.compactMap { windowDict in
             // Extract window properties
             guard let ownerPID = windowDict[kCGWindowOwnerPID as String] as? pid_t,
@@ -148,6 +150,11 @@ final class WindowTracker {
                 return nil
             }
             
+            // Log suspicious window IDs for debugging
+            if windowID < 1000 && windowID == CGWindowID(ownerPID) {
+                logger.warning("Suspicious window ID \(windowID) matches PID for \(ownerName)")
+            }
+
             // Check if this is a terminal application
             guard let terminal = Terminal.allCases.first(where: { term in
                 // Match by process name, app name, or bundle identifier parts

web/src/server/pty/pty-manager.ts

@@ -24,8 +24,8 @@ import { TitleMode } from '../../shared/types.js';
 import { ProcessTreeAnalyzer } from '../services/process-tree-analyzer.js';
 import { ActivityDetector, type ActivityState } from '../utils/activity-detector.js';
 import { filterTerminalTitleSequences } from '../utils/ansi-filter.js';
-import { StatefulAnsiFilter } from '../utils/stateful-ansi-filter.js';
 import { createLogger } from '../utils/logger.js';
+import { StatefulAnsiFilter } from '../utils/stateful-ansi-filter.js';
 import {
   extractCdDirectory,
   generateDynamicTitle,
@@ -1870,6 +1870,12 @@ export class PtyManager extends EventEmitter {
       session.activityDetector = undefined;
     }
 
+    // Clean up ANSI filter
+    if (session.ansiFilter) {
+      session.ansiFilter.reset();
+      session.ansiFilter = undefined;
+    }
+
     // Clean up input socket server
     if (session.inputSocketServer) {
       // Close the server and wait for it to close

web/src/server/routes/logs.ts

@@ -82,6 +82,7 @@ export function createLogRoutes(_config?: LogRoutesConfig): Router {
         return res.json({
           exists: false,
           size: 0,
+          lastModified: null,
           path: logPath,
         });
       }

web/src/server/utils/stateful-ansi-filter.ts

@@ -85,7 +85,7 @@ export class StatefulAnsiFilter {
             // Still parsing digits
           } else if (char === ';') {
             // Check if it's a title sequence (OSC 0, 1, or 2)
-            const oscNumber = parseInt(this.buffer.slice(2, -1), 10);
+            const oscNumber = Number.parseInt(this.buffer.slice(2, -1), 10);
             if (oscNumber >= 0 && oscNumber <= 2) {
               // This is a title sequence, continue parsing
               this.state = ParseState.OSC_CONTENT;