Add E2E test workflow with video recording (#778)

* Add E2E test workflow with video recording and issue posting

New workflow_dispatch workflow (test-e2e.yml) that runs XCUITests on
GitHub-hosted macos-15 runners, records the virtual display, uploads the
video as an artifact, and posts results as an issue on cmux-dev-artifacts.

Includes scripts/run-e2e.sh for convenient triggering from the terminal.

* Print issue URL in workflow annotation and run-e2e.sh output

- Capture gh issue create output URL, print as ::notice annotation
- Search issues by run ID instead of grabbing most recent

scripts/run-e2e.sh

@@ -0,0 +1,101 @@
+#!/usr/bin/env bash
+# Trigger the test-e2e.yml workflow and optionally wait for results.
+#
+# Usage:
+#   ./scripts/run-e2e.sh UpdatePillUITests
+#   ./scripts/run-e2e.sh UpdatePillUITests --wait
+#   ./scripts/run-e2e.sh UpdatePillUITests/testFoo --ref my-branch
+#   ./scripts/run-e2e.sh UpdatePillUITests --no-video --timeout 300
+set -euo pipefail
+
+REPO="manaflow-ai/cmux"
+WORKFLOW="test-e2e.yml"
+
+# Defaults
+REF=""
+WAIT=false
+RECORD_VIDEO=true
+TIMEOUT=120
+
+usage() {
+  cat <<EOF
+Usage: $(basename "$0") <test_filter> [options]
+
+Arguments:
+  test_filter    Test class or class/method (e.g. UpdatePillUITests)
+
+Options:
+  --ref <ref>      Branch or SHA to test (default: current branch)
+  --wait           Wait for the run to complete and print result
+  --no-video       Disable video recording
+  --timeout <sec>  Per-test timeout in seconds (default: 120)
+  -h, --help       Show this help
+EOF
+  exit 0
+}
+
+if [ $# -lt 1 ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
+  usage
+fi
+
+TEST_FILTER="$1"
+shift
+
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --ref)
+      REF="$2"
+      shift 2
+      ;;
+    --wait)
+      WAIT=true
+      shift
+      ;;
+    --no-video)
+      RECORD_VIDEO=false
+      shift
+      ;;
+    --timeout)
+      TIMEOUT="$2"
+      shift 2
+      ;;
+    *)
+      echo "Unknown option: $1" >&2
+      usage
+      ;;
+  esac
+done
+
+# Build workflow dispatch fields
+FIELDS=(-f "test_filter=$TEST_FILTER" -f "record_video=$RECORD_VIDEO" -f "test_timeout=$TIMEOUT")
+if [ -n "$REF" ]; then
+  FIELDS+=(-f "ref=$REF")
+fi
+
+echo "Triggering $WORKFLOW with test_filter=$TEST_FILTER ref=${REF:-<default>} video=$RECORD_VIDEO timeout=$TIMEOUT"
+gh workflow run "$WORKFLOW" --repo "$REPO" "${FIELDS[@]}"
+
+# Wait a moment for the run to register
+sleep 3
+
+# Get the latest run ID
+RUN_ID=$(gh run list --repo "$REPO" --workflow "$WORKFLOW" --limit 1 --json databaseId --jq '.[0].databaseId')
+RUN_URL="https://github.com/$REPO/actions/runs/$RUN_ID"
+
+echo "Run: $RUN_URL"
+
+if [ "$WAIT" = true ]; then
+  echo "Waiting for run to complete..."
+  gh run watch --repo "$REPO" "$RUN_ID" --exit-status || true
+
+  STATUS=$(gh run view --repo "$REPO" "$RUN_ID" --json conclusion --jq '.conclusion')
+  echo ""
+  echo "Result: $STATUS"
+  echo "Run: $RUN_URL"
+
+  # Find the issue created for this run (search by run ID in body)
+  ISSUE_URL=$(gh search issues "$RUN_ID" --repo manaflow-ai/cmux-dev-artifacts --limit 1 --json url --jq '.[0].url' 2>/dev/null || true)
+  if [ -n "$ISSUE_URL" ]; then
+    echo "Issue: $ISSUE_URL"
+  fi
+fi