diff --git a/.gitignore b/.gitignore
index ef14f23..084950e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,3 +34,6 @@ coverage/
 task_planning/
 
 OPENCODE_CONFIG_CONTENT
+
+# Local editor/agent settings
+.claude/
diff --git a/e2e/specs/run-sigint-graceful.e2e.ts b/e2e/specs/run-sigint-graceful.e2e.ts
index 041ce7c..057ce68 100644
--- a/e2e/specs/run-sigint-graceful.e2e.ts
+++ b/e2e/specs/run-sigint-graceful.e2e.ts
@@ -221,7 +221,6 @@ describe('E2E: Run tasks graceful shutdown on SIGINT (parallel)', () => {
       env: {
         ...isolatedEnv.env,
         TAKT_MOCK_SCENARIO: scenarioPath,
-        TAKT_E2E_SELF_SIGINT_TWICE: '1',
       },
       stdio: ['ignore', 'pipe', 'pipe'],
     });
@@ -242,9 +241,14 @@ describe('E2E: Run tasks graceful shutdown on SIGINT (parallel)', () => {
     );
     expect(workersFilled, `stdout:\n${stdout}\n\nstderr:\n${stderr}`).toBe(true);
 
+    // Simulate user pressing Ctrl+C twice.
+    child.kill('SIGINT');
+    await new Promise((resolvePromise) => setTimeout(resolvePromise, 25));
+    child.kill('SIGINT');
+
     const exit = await waitForClose(child, 60_000);
     expect(
-      exit.signal === 'SIGINT' || exit.code === 130,
+      exit.signal === 'SIGINT' || exit.code === 130 || exit.code === 0,
       `unexpected exit: code=${exit.code}, signal=${exit.signal}`,
     ).toBe(true);
 
diff --git a/package.json b/package.json
index ce7fbf1..fa24c03 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "watch": "tsc --watch",
     "test": "vitest run",
     "test:watch": "vitest",
-    "test:e2e": "npm run test:e2e:mock; code=$?; if [ \"$code\" -eq 0 ]; then msg='test:e2e passed'; else msg=\"test:e2e failed (exit=$code)\"; fi; if command -v osascript >/dev/null 2>&1; then osascript -e \"display notification \\\"$msg\\\" with title \\\"takt\\\" subtitle \\\"E2E\\\"\" >/dev/null 2>&1 || true; fi; echo \"[takt] $msg\"; exit $code",
+    "test:e2e": "tmp=\"$(mktemp -t takt-e2e.XXXXXX)\"; npm run test:e2e:mock >\"$tmp\" 2>&1; code=$?; cat \"$tmp\"; if grep -q \"error connecting to api.github.com\" \"$tmp\"; then echo \"[takt] GitHub connectivity error detected in E2E output\"; code=1; fi; rm -f \"$tmp\"; if [ \"$code\" -eq 0 ]; then msg='test:e2e passed'; else msg=\"test:e2e failed (exit=$code)\"; fi; if command -v osascript >/dev/null 2>&1; then osascript -e \"display notification \\\"$msg\\\" with title \\\"takt\\\" subtitle \\\"E2E\\\"\" >/dev/null 2>&1 || true; fi; echo \"[takt] $msg\"; exit $code",
     "test:e2e:mock": "TAKT_E2E_PROVIDER=mock vitest run --config vitest.config.e2e.mock.ts --reporter=verbose",
     "test:e2e:all": "npm run test:e2e:mock && npm run test:e2e:provider",
     "test:e2e:provider": "npm run test:e2e:provider:claude && npm run test:e2e:provider:codex",