* cadcraft-cli mcp: --connect without HOST:PORT is an error, not a headless session (#103)
`mcp --connect` with no address (or an empty or flag-like one) fell through
to the headless backend, so a client meant for the app got successful edits
in a separate drawing. The mcp arguments now go through parse_mcp_args:
--connect must be followed by a non-empty value that doesn't start with `-`,
unknown arguments and a repeated --connect are rejected, and every error
exits non-zero before any MCP request is served. Plain `mcp` is still
headless; a real address still connects, and an unreachable one still fails.
- Unit tests for the parser; integration tests (tests/mcp_connect.rs) run the
binary: missing/empty/flag-like address, headless control, loopback
endpoint routing, closed port.
- docs/mcp.md says what happens without an address.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Move tests away from other PRs' hunks to avoid merge conflicts
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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