v0.66.0: e2e results in Gitea job summary (#141)

The run page's Job summaries panel showed vitest results (vitest's built-in
github-actions reporter auto-appends $GITHUB_STEP_SUMMARY in CI) but nothing
about the Playwright suite. The E2E step now also runs the built-in json
reporter (--reporter=list,json, output pinned to git-ignored test-results/e2e.json
via PLAYWRIGHT_JSON_OUTPUT_FILE), and a new non-fatal 'E2E job summary' step
(if: always()) parses it with an inline node script and appends spec-level
passed/failed/skipped counts + failed spec names (file > title) to
$GITHUB_STEP_SUMMARY. Guarded so a missing/malformed report can never fail or
mask the e2e step's real exit code; no test behavior, timeouts, workers or
retries changed.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "flight-ops",
-  "version": "0.65.0",
+  "version": "0.66.0",
   "private": true,
   "scripts": {
     "dev": "next dev -p 3000",