[pstarkgit]

Summary

Two installation-time settings interact poorly with current Hermes:

1. Hermes rejects a plugin-relative get_config("model") because model is a reserved core root. The router silently catches that exception, emits repeated Rejected config path 'model' warnings, and always falls back to jev-latest. Rename the plugin setting to router_model while retaining the client's model argument and document the change.
2. The default cache.json lives inside this plugin's buildable directory. Hermes includes non-excluded plugin files in its dependency stamp, so each answer cache rewrite can make the next CLI launch report venv: out of sync with uv.lock and repeat the source-update dependency/desktop build. Put the default cache under <hermes home>/cache/typesafe-skill-router.json instead. Explicit cache overrides remain supported.

The README notes that the previous cache is not automatically migrated and describes how to preserve it before restarting; leaving cache_path pointed into the buildable plugin tree reproduces the stamp problem.

Verification

• Regression tests for the reserved key and default cache path were red before the change and green afterward.
• A test verifies that explicit router_model and cache_path reach the System One client.
• uv run --no-project --with pytest --with pyyaml python -m pytest tests -q: 68 passed on macOS.
• A locally applied version was live-checked in all five Hermes profiles (default, maic, membr, murmrcore, nyra) with a successful TypeSafe probe per profile. These local profiles use explicit external cache paths until this fix is released.