Maqam v0.1.4

Added\n- Governed CLI worker adapter via createCliAgentTool.\n- Timeout, approximate input-token, output-byte, JSON parsing, nonzero-exit, and spawn-failure controls for command-line workers.\n- End-to-end workflow test showing a governed worker producing a small artifact with evidence capture.\n- New visual flow asset for governed CLI worker orchestration.\n\n## Verification\n- npm test: 33 passing tests.\n- npm pack --dry-run verified package contents.\n- Clean npm install smoke verified maqam@0.1.4 exports and CLI help.