chore: simplify crabbox integration

.agents/skills/blacksmith-testbox/SKILL.md

@@ -10,6 +10,9 @@ description: Run Blacksmith Testbox for CI-parity checks, secrets, hosted servic
 Use Testbox when you need remote CI parity, injected secrets, hosted services,
 or an OS/runtime image that your local machine cannot provide cheaply.
 
+For OpenClaw, Crabbox is a supported alternative when Blacksmith is unavailable
+or owned cloud capacity is preferable.
+
 Do not default to Testbox for every local test/build loop. If the repo has
 documented local commands for normal iteration, use those first so you keep
 warm caches, local build state, and fast feedback.

.agents/skills/crabbox/SKILL.md

@@ -0,0 +1,78 @@
+---
+name: crabbox
+description: Use Crabbox for OpenClaw remote Linux validation, warmed reusable boxes, GitHub Actions hydration, sync timing, logs, results, caches, and lease cleanup.
+---
+
+# Crabbox
+
+Use Crabbox when OpenClaw needs remote Linux proof on owned capacity, a large
+runner class, reusable warm state, or a Blacksmith alternative.
+
+## Before Running
+
+- Run from the repo root. Crabbox sync mirrors the current checkout.
+- Prefer local targeted tests for tight edit loops.
+- Prefer Blacksmith Testbox when the task explicitly asks for Blacksmith or a
+  Blacksmith-specific CI comparison.
+- Use Crabbox for broad OpenClaw gates when owned AWS/Hetzner capacity is the
+  right remote lane.
+- Check `.crabbox.yaml` for repo defaults before adding flags.
+- Install with `brew install openclaw/tap/crabbox`; auth is required before use: `crabbox login`.
+
+## OpenClaw Flow
+
+Warm a reusable box:
+
+```sh
+pnpm crabbox:warmup -- --idle-timeout 90m
+```
+
+Hydrate it through the repository workflow:
+
+```sh
+pnpm crabbox:hydrate -- --id <cbx_id-or-slug>
+```
+
+Run broad proof:
+
+```sh
+pnpm crabbox:run -- --id <cbx_id-or-slug> --shell "OPENCLAW_TESTBOX=1 pnpm check:changed"
+pnpm crabbox:run -- --id <cbx_id-or-slug> --shell "corepack enable && pnpm install --frozen-lockfile && pnpm test"
+```
+
+Stop boxes you created before handoff:
+
+```sh
+pnpm crabbox:stop -- <cbx_id-or-slug>
+```
+
+## Useful Commands
+
+```sh
+crabbox status --id <id-or-slug> --wait
+crabbox inspect --id <id-or-slug> --json
+crabbox sync-plan
+crabbox history --lease <id-or-slug>
+crabbox logs <run_id>
+crabbox results <run_id>
+crabbox cache stats --id <id-or-slug>
+crabbox ssh --id <id-or-slug>
+```
+
+Use `--debug` on `run` when measuring sync timing.
+
+## Hydration Boundary
+
+`.github/workflows/crabbox-hydrate.yml` is repo-specific on purpose. It owns
+OpenClaw checkout, setup-node, pnpm setup, provider env hydration, ready marker,
+and keepalive. Crabbox owns runner registration, workflow dispatch, SSH sync,
+command execution, logs/results, local lease claims, and idle cleanup.
+
+Do not add OpenClaw-specific setup to Crabbox. Put repo setup in the hydration
+workflow and generic lease/sync behavior in Crabbox.
+
+## Cleanup
+
+Crabbox has coordinator-owned idle expiry and local lease claims, so OpenClaw
+does not need a custom ledger. Default idle timeout is 30 minutes unless config
+or flags set a different value. Still stop boxes you created when done.