game-golden-screenshot-verifierlisted
Install: claude install-skill JarrydAdaens/agentic_rails_marketplace
# Game Golden-Screenshot Verifier
A one-command runtime verifier an agent can run unattended to answer "does the
game still boot and render correctly?" The runner (`run_eval.py`, next to this
file) ships in the plugin and never moves into the project; the project owns a
small **seam folder** holding everything game-specific. Requires Python 3.10+
and `uv` (dependencies are declared inline in the runner and install on first
`uv run`), plus a real desktop session for screen capture and input.
Throughout, `<skill-dir>` means the directory containing this SKILL.md, and
`<seam-dir>` means the project's seam folder.
## First-time setup in a project
1. Create the seam folder — `harness/game-golden-screenshot/` by convention
(any location works; all relative paths in the config resolve against it).
2. Copy `<skill-dir>/eval_config.example.json` to `<seam-dir>/eval_config.json`
and fill in the executable path, launch arguments, window title, capture
size, threshold, timeout, and warmup/settle delays. Relative paths resolve
against `<seam-dir>`, so an executable elsewhere in the repo needs `../`
segments or an absolute path.
3. Copy `<skill-dir>/drivers/input_stub.py` to `<seam-dir>/drivers/` and
replace its `drive()` body with the game's real route to a repeatable
visual state (launch flag into a fixed scene, scripted menu path, or a
static screen needing no input — the stub's docstring ranks the options).
The stub only moves the mouse and taps Shift; it