Pilot refactor per locked substrate schema. kei-task migrated to atom
layout:
- atoms/<verb>.md — YAML frontmatter + human body for 3 verbs
- atoms/schemas/<verb>-{input,output}.json — JSON Schema draft-07
- src/atoms/<verb>.rs — typed Input/Output/Error + pub fn run()
- src/atoms/mod.rs — module registry
- Cargo.toml [package.metadata.keisei] — crate-level substrate data
- src/main.rs — dispatcher for 3 pilot commands via atoms::
Zero behaviour change: 7/7 integration tests pass before and after
(create_and_get, update_persists, cycle_detected, milestone_linking,
dependency_chain_traversal, task_graph_edges, search_finds_task).
main.rs still has 5 non-migrated subcommands (update, graph,
dependency-chain, milestone, link-milestone) — scope discipline, they
migrate in later passes. main.rs 120 → 132 LOC.
Stream B pilot reference — other crates follow this pattern in v0.24+.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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