docs(habitat): add D0 public contract inventory for deep refactor - #1809
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Add the D0 public contract inventory and OpenSpec workstream records for the Deep Habitat refactor. The inventory classifies Habitat command, script, package, generator, hook, and JSON/receipt surfaces without changing runtime behavior. Record dependency/build grounding for command-entrypoint validation and downstream realignment obligations for proof-shaped compatibility surfaces, command help drift, and implemented-surface docs. Validation: - bun run openspec -- validate deep-habitat-d0-public-contract-inventory --strict - bun run openspec:validate - bun install --frozen-lockfile - bun run --cwd tools/habitat-harness build - bun run --cwd tools/habitat-harness test -- test/commands/habitat-entrypoints.test.ts - bun run habitat classify tools/habitat-harness/src/plugin.js - bun run nx g @internal/habitat-harness:project unsupported-d0-probe --kind=mod --dry-run - bun run lint - git diff --check
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This PR establishes the D0 public contract inventory for the Deep Habitat refactor, creating a durable compatibility ledger that all later refactor packets (D1–D14) must consult before moving, narrowing, removing, or versioning any Habitat surface.
The core artifact is
docs/projects/habitat-harness/deep-refactor/D0-public-contract-inventory.md, which classifies every current Habitat surface into one of eight contract states: public stable, public versioned, package-internal, command-only DTO, test-only, generated/derived, deprecated, or refused. Coverage includes:check,classify,verify,fix,graph,hook) with their flags, human output contracts, and machine JSON/receipt DTO contractsCheckReport,Classification,DiffClassification,VerifyProof,GritApplyTransactionProof,HookTrace) distinguished from internal helpers that happen to be exportedsrc/index.tsexport matrix classifying every exported symbol across baseline, command-engine, Grit, hooks, process, receipt artifact, rule registry, and Pattern Authority modulesKey compatibility decisions recorded:
bun run habitat check --jsonis canonical;bun run habitat check -- --jsonis a product compatibility issue, not a typobun run habitat:check -- --json) is a separate public surface from nested forwardingVerifyProof,GritApplyTransactionProof,ProofArtifactWriter) are current compatibility facts only — downstream packets must simplify them into minimal command receipts where product scenarios justify them, not treat artifact generation as target-domain authorityClassificationcurrently lacks top-level schema versioning; D4 must preserve or explicitly version it before changing fieldsbun install --frozen-lockfile+bun run --cwd tools/habitat-harness build) before claiming command behavior, as staledist/**artifacts produce false resultsThe accompanying OpenSpec change (
deep-habitat-d0-public-contract-inventory) adds requirements that gate all later refactor packet closure on consulting this ledger. The downstream realignment ledger tracks watched obligations for D1 through D14. No command behavior, package exports, generators, hooks, or generated artifacts are changed.