docs: add post-pull submodule sync rule to CLAUDE.md and AGENTS.md #482

Job	Run time
Format Check	14s
Compose File Validate	4s
Build (ubuntu-latest)	5m 5s
Cargo Package Verify	3m 40s
Docker Context Guard	3m 24s
Marketplace Packer Validate	10s
Build (macos-latest)	6m 32s
Bun Ecosystem Checks	8s
E2E Tests	4m 15s
CLI Parity Tests	22s
	23m 54s

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