ci: v0.13.0 — plain-progress image build, bun cache mounts + actions/cache around dep install

CHANGELOG.md

@@ -8,6 +8,7 @@
 - **Playwright config made CI-aware, backward-compatible** (`playwright.config.ts`): new optional env vars — `PW_REMOTE_BROWSER=0` (local chromium instead of the shared remote server at 192.168.1.4:3000), `E2E_DEPLOY_CMD` (runs as webServer + readiness wait; unset = current local behavior with no auto-deploy); `E2E_BASE_URL` already existed. `e2e/state.spec.ts` reads `E2E_COMPOSE_ARGS` for its mid-run `docker compose restart flight` (default empty → unchanged locally)
 - **@playwright/test pinned as devDependency** (`1.63.0`, matching the shared remote browser server image and the global install) so CI is self-contained; still excluded from the runtime image via .dockerignore (comment updated), prod-deps stage unaffected
 - `AGENTS.md`: "Change process" + "E2E tests" rewritten for the PR workflow — feature branch off master → commits with CHANGELOG entry + version bump → PR to master → CI (build→unit→e2e) green → merge → tag on master → manual production deploy via `docker compose up -d --build`; no direct pushes to master, CI never deploys
+- **CI build reliability + caching** (after first dind runs): the e2e image is now built with `--progress=plain` before `up -d` so BuildKit step output lands in job logs instead of being hidden by auto progress; Dockerfile bun installs use a BuildKit cache mount (`/root/.bun/install/cache`) that persists on the runner's shared daemon, and CI restores/saves node_modules + the bun cache via actions/cache around dependency install (both steps `continue-on-error` — safe while the runner's cache server is being fixed)
 - Verified: unit suite 234 green locally; e2e not run locally by design (would deploy to production) — first real pass happens in the PR's CI run
 
 ## v0.12.2 — 2026-09-18 14:06