fix(e2e): kill stale processes, verify app identity before tests

- onPrepare: kill stale tauri-driver on port 9750 before spawning
- onPrepare: verify debug binary exists (fail fast with clear message)
- before: app identity check — waits for known Agent Orchestrator elements
  (status-bar, project-grid, settings-panel) or matching window title
- Prevents wrong-app connection when other Tauri/WebKit2GTK apps are running

tests/e2e/wdio.conf.js

@@ -1,8 +1,8 @@
-import { spawn } from 'node:child_process';
+import { spawn, execSync } from 'node:child_process';
 import { createConnection } from 'node:net';
 import { resolve, dirname } from 'node:path';
 import { fileURLToPath } from 'node:url';
-import { rmSync } from 'node:fs';
+import { rmSync, existsSync } from 'node:fs';
 import { createTestFixture } from './infra/fixtures.ts';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
@@ -100,9 +100,25 @@ export const config = {
 
   /**
    * Build the debug binary before the test run.
-   * Uses --debug --no-bundle for fastest build time.
+   * Kills any stale tauri-driver on our port first.
    */
   onPrepare() {
+    // Kill stale tauri-driver on our port to avoid connecting to wrong app
+    try {
+      const pids = execSync(`lsof -ti:${TAURI_DRIVER_PORT} 2>/dev/null`, { encoding: 'utf8' }).trim();
+      if (pids) {
+        console.log(`Killing stale process(es) on port ${TAURI_DRIVER_PORT}: ${pids}`);
+        execSync(`kill ${pids} 2>/dev/null`);
+      }
+    } catch { /* no process on port — good */ }
+
+    // Verify binary exists
+    if (!existsSync(tauriBinary)) {
+      if (process.env.SKIP_BUILD) {
+        throw new Error(`Debug binary not found at ${tauriBinary}. Build first or unset SKIP_BUILD.`);
+      }
+    }
+
     if (process.env.SKIP_BUILD) {
       console.log('SKIP_BUILD set — using existing debug binary.');
       return Promise.resolve();
@@ -176,6 +192,34 @@ export const config = {
     });
   },
 
+  /**
+   * Verify the connected app is Agent Orchestrator (not another Tauri/WebKit2GTK app).
+   * Runs once after the WebDriver session is created, before any spec files.
+   */
+  async before() {
+    // Wait for app to render, then check for a known element
+    await browser.waitUntil(
+      async () => {
+        const title = await browser.getTitle();
+        const hasKnownEl = await browser.execute(() =>
+          document.querySelector('[data-testid="status-bar"]') !== null
+          || document.querySelector('.project-grid') !== null
+          || document.querySelector('.settings-panel') !== null
+        );
+        return hasKnownEl || title.toLowerCase().includes('agor') || title.toLowerCase().includes('orchestrator');
+      },
+      {
+        timeout: 15_000,
+        interval: 500,
+        timeoutMsg:
+          'Connected app is NOT Agent Orchestrator — wrong app detected. ' +
+          'Check for other Tauri/WebKit2GTK apps running on this machine. ' +
+          'Kill them or ensure the correct binary is at: ' + tauriBinary,
+      },
+    );
+    console.log('App identity verified: Agent Orchestrator connected.');
+  },
+
   /**
    * Kill tauri-driver after the test run.
    */