feat: notify actions + LLM-backed rule suggestion (tracks θ + η) (#40) #124

Job	Run time
Markdown lint (changelog)	12s
test (18.x)	1m 12s
test (20.x)	50s
test (22.x)	50s
Policy schema sync with skill repo	5s
esbuild bundle smoke test (Node 18.x)	28s
Packed install smoke (ubuntu-latest)	20s
Packed install smoke (windows-latest)	1m 44s
Offline size budgets	25s
esbuild bundle smoke test (Node 20.x)	22s
esbuild bundle smoke test (Node 22.x)	21s
	6m 49s

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