cross-agent-install-smoke

name	cross-agent-install-smoke
description	Phase 1 dry-run JSON smoke and phase 2 temp-HOME install smoke for skills sync. Use when validating cross-harness install parity. NOT for live --apply installs.
user-invocable	true
argument-hint	[phase]
license	MIT
metadata	{"author":"wyattowalsh","version":"1.0.0"}

Cross-Agent Install Smoke

Validate additive skills sync without mutating live harness installs.

Scope: Install smoke only. Do not run live apply installs unless the maintainer explicitly requests it.

Dispatch

$ARGUMENTS	Action
Empty / phase1 / dry-run	Run phase 1 dry-run JSON assertions
phase2 / local / smoke	Run phase 2 temp-HOME smoke (requires INSTALL_SMOKE=1)
all	Run phase 1, then phase 2 when gated
help	Show phases, gates, and example commands

Phase 1 — Dry-Run JSON

Run the deterministic checker from the repo root:

uv run python skills/cross-agent-install-smoke/scripts/dry_run.py

Phase 1 executes the repo skills-sync dry-run command and asserts:

• top-level keys: ok, mode, inventory_count, include_installed, agents
• mode is dry-run
• each agent row includes agent plus list fields missing, already_present, unresolved, skipped

Pass criteria: script exits 0 and prints a JSON summary to stdout.

Phase 2 — Temp-HOME Smoke

Phase 2 is opt-in and mutates only a temporary home directory.

INSTALL_SMOKE=1 uv run python skills/cross-agent-install-smoke/scripts/local_smoke.py

The script:

1. Refuses to run unless INSTALL_SMOKE=1
2. Creates an isolated HOME under a temp directory
3. Runs the repo validation command against the repo
4. Runs a single-harness skills-sync dry-run JSON probe
5. Cleans up the temp home

Never point phase 2 at a production home directory.

Validation Contract

uv run python skills/cross-agent-install-smoke/scripts/check.py
INSTALL_SMOKE=1 uv run python skills/cross-agent-install-smoke/scripts/check.py

Completion criteria:

1. Phase 1 (dry_run.py) exits 0 in CI and local maintainer runs.
2. Phase 2 runs only when INSTALL_SMOKE=1 is set.
3. scripts/check.py exits 0 for the selected phase gates.

Critical Rules

1. Default to dry-run; never apply live installs from this skill.
2. Treat skills sync JSON as evidence, not authority over repo policy.
3. Run phase 1 before recommending any cross-harness install reconciliation.
4. Gate phase 2 behind INSTALL_SMOKE=1 and a disposable temp HOME.
5. Report harness-specific inventory errors without masking top-level ok: false.