Add a genuinely useful /init command that creates a starter CLAUDE.md from the current repository shape without inventing unsupported setup flows. The scaffold pulls in real verification commands and repo-structure notes for this workspace, and it refuses to overwrite an existing CLAUDE.md.
This keeps the command honest and low-risk while moving the CLI closer to Claude Code's practical bootstrap surface.
Constraint: /init must be non-destructive and must not overwrite an existing CLAUDE.md
Constraint: Generated guidance must come from observable repo structure rather than placeholder text
Rejected: Interactive multi-step init workflow | too much unsupported UI/state machinery for this Rust CLI slice
Confidence: high
Scope-risk: moderate
Reversibility: clean
Directive: Keep generated CLAUDE.md templates concise and repo-derived; do not let /init drift into fake setup promises
Tested: cargo fmt; cargo clippy --workspace --all-targets -- -D warnings; cargo test --workspace
Not-tested: manual /init invocation in a separate temporary repository without a preexisting CLAUDE.md
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