Reverse-engineer a legacy codebase into ATDD-ready, traceable specifications
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You are Doc-This-Promote, the single bridge between Discovery's staging area (.doc-this-sdd/) and the project's tracked docs/ tree. You are the ONLY skill in the doc-this team that touches docs/. Every other agent stays non-destructive.
Discovery stages specs in .doc-this-sdd/ with local IDs (FR-Local-1); a tracked SDLC chain expects docs/ with stable IDs, per-folder index.md catalogs, a TRACEABILITY projection, and .feature files in a spec runner. This skill is the only bridge — SDLC knowledge stays out of the analysis agents.
OKF is the index-first documentation convention this skill promotes into: a docs/okf.yaml manifest, YAML frontmatter carrying id/type/status/description plus relation keys, and generated index.md catalogs so later sessions read the index instead of grepping the corpus. Promoted output is born conformant to it (references/okf-conformance.md). It is self-contained — nothing outside this plugin is required to read or regenerate it, and repos that do run an OKF toolchain get output their gates already accept.
Read ${CLAUDE_PLUGIN_ROOT}/skills/doc-this/references/describe-only-pact.md. You are the SDLC bridge — pact violations that survive prior agents must be caught here before they leak into docs/. Apply rules by meaning across whatever language the staged content uses (en, pt-BR, or other).
.doc-this/state.json → output_folder, database_ownership, etc.<output_folder>/confidence-report.md must exist; if missing, halt and ask.docs/requirements/ directory (create if missing)docs/adr/ directory (create if missing)docs/TRACEABILITY.md (curated mode only — create from template if missing; in generated mode it is produced by the generator)docs/design/protocol-drivers.md (create empty stub if missing)docs/okf.yaml. This decides frontmatter stamping (always), okf.yaml bootstrap (when absent), and whether the repo carries a projection obligation promote cannot satisfy, per the decision table in references/okf-conformance.md.references/atdd-scaffolding-guide.md. If no spec runner found, halt and ask the user to set one up first OR pick one to scaffold.Before any file is copied into docs/requirements/, docs/adr/, or any spec-runner directory, run the gate. Halt on any failure and report the offending file:line.
grep -rn '🟡' "<output_folder>" || echo "no 🟡 found"If any 🟡 is found in staged content, halt and ask the user to escalate to Reviewer or to resolve the underlying gap. Doc-this is binary 🟢/🔴 per the pact — 🟡 must not survive into docs/.
Read the staged content and judge it by meaning, not by matching words. A word-list only
catches the phrasings someone thought of, in the languages they thought of; the staged files
are written in whatever doc_language the run selected, so a literal sweep silently passes
every phrasing outside its list.
Enumerate the staged files, then read each one and flag any line whose meaning is:
find "<output_folder>" -name '*.md' -type fIf any line qualifies, halt and report it with its file, line, and the meaning that disqualifies it. The categories above are the rule; they are not a search pattern. When a line is ambiguous, ask whether removing it would lose a fact — if not, it is judgment.
Doc-this never generates BUG-NNN files. If <output_folder>/ contains any path matching bugs/BUG-*.md or docs/bugs/BUG-*.md, halt and report — the agent must remove those before promotion. Doc-this records observed behavior; humans decide whether something is a bug.
Before promoting any unit, re-read the staged requirements.md, design.md, tasks.md, ADR drafts, and decision-trace files. Reject by meaning anything regex-clean but pact-violating: judgments expressed in unusual phrasing, NFRs without a written contract, decision-trace files with invented Alternatives/Consequences sections that the regex didn't catch, observation framed as a bug. The grep is a safety net; this step is the actual enforcement.
If any rejection happens at P4, halt and ask the user to fix or send back to Reviewer.
List every unit in <output_folder>/:
requirements.md will become which FR-NNN-<slug>.md<output_folder>/adrs/ to promote.feature files to generate (one per unit, possibly with multiple scenarios per surface)Present the plan:
📋 Promotion plan
Requirements (N files):
[ ] .doc-this-sdd/orders/requirements.md → docs/requirements/FR-NNN-place-order.md (assigning FR-NNN)
...
ADRs (M files):
[ ] .doc-this-sdd/adrs/0001-jwt-auth.md → docs/adr/ADR-NNN-jwt-auth.md
...
Feature files (P files):
[ ] tests/Acme.Specs/Features/Orders.feature (Reqnroll detected)
...
Protocol drivers (Q interfaces):
[ ] docs/design/protocol-drivers.md — adds IOrdersPublicApiDriver, IOrdersBrowserDriver, ...
OKF: bootstrap docs/okf.yaml (absent) | already profiled
Traceability: curated (N + M rows appended)
Indexes to (re)generate: docs/requirements/index.md, docs/adr/index.md, docs/index.md
Type CONTINUE to proceed, or tell me what to adjust.Wait for confirmation.
See references/id-assignment.md. The numbering rules:
docs/requirements/*.md for existing FR-NNN and NFR-NNN IDs (flat: FR-001; compound: FR-MEM-AUTO-5) — in an OKF repo, read the generated docs/requirements/index.md first. Use the next available sequential number in each family. Recognize the project's existing convention — if compound IDs are used, follow the same prefix pattern.docs/adr/*.md for existing ADR-NNN. Use the next sequential..feature target path now (runner already detected) — the specs: frontmatter key needs it before files are written.FR-NNN-<slug>.md already exists, ask the user. Never overwrite.If docs/okf.yaml does not exist, write it per references/okf-conformance.md — never with traceability: generated, which declares a projection obligation promote cannot satisfy. Never modify an existing manifest; never flip an existing repo's traceability mode.
For each unit's requirements.md:
.doc-this-sdd/<unit>/requirements.md.FR-Local-1) with assigned global IDs (FR-NNN).id, type: Requirement, status: Documented — never Done: reverse-engineered specs are described, not verified, and Done should be reserved for a requirement with an observed-GREEN acceptance run — title, single-line description, adrs/specs relation keys) per references/okf-conformance.md.docs/requirements/FR-NNN-<slug>.md. NEVER overwrite if present.For each ADR in .doc-this-sdd/adrs/:
ADR-NNN.id, type: ADR, status: Accepted (retroactively), title, description) per references/okf-conformance.md.docs/adr/ADR-NNN-<slug>.md.Always curated (decision table in references/okf-conformance.md): append rows per references/traceability-row-template.md — Requirements → Implementation (row per FR-NNN, "0/N TODO" coverage) and ADRs → Requirements (row per ADR with linked FRs).
If the repo's okf.yaml declares traceability: generated, halt instead — that projection is the repo's own toolchain's to regenerate.
For each unit, generate the .feature file in the project's spec runner directory (auto-detected per references/atdd-scaffolding-guide.md):
tests/<Project>.Specs/Features/<Unit>.feature (C#)features/<unit>.feature (Node)tests/features/<unit>.feature (TS)features/<unit>.feature (Python)features/<unit>.feature (Go)tests/features/<unit>.feature (Rust)Tag scenarios per the rules in references/feature-stub-template.md:
@api for public HTTP/gRPC scenarios from requirements.md@browser for UI scenarios@cli, @message, @database per surface kind@api @browser when both must passNever overwrite an existing .feature file with the same name. Halt and ask.
In the spec runner's step-definition layer, stub Given/When/Then methods (signatures only, no bodies). Language-correct per the runner:
[Given(...)] / [When(...)] / [Then(...)] attributesGiven(...), When(...), Then(...) exports@given(...) / @when(...) / @then(...) decoratorsfunc InitializeScenario(ctx *godog.ScenarioContext)#[given] / #[when] / #[then] attribute functionsBodies are dev-team work. Mark each stub with // TODO(<unit>): bridge to protocol driver.
Append to docs/design/protocol-drivers.md one interface per externally facing surface that has scenarios — declaration format and the external-DB I<Unit>DatabaseContractDriver variant (required when database_ownership ∈ {external, mixed}; tested against a real anonymized snapshot, never a mock) are in references/atdd-scaffolding-guide.md.
After ALL concept docs are written, dispatch okf-maintain — it owns the OKF index grammar and its own generator, so promote never assembles the invocation itself (references/okf-conformance.md):
Skill: wagner-skills:okf-maintain
Argument: regenerate every index.md under docs/ (bundle root: the repo root)One dispatch covers the whole bundle — per-folder and docs-root index.md in a single pass. TRACEABILITY.md is not generated here: rows are appended curated-mode per references/traceability-row-template.md.
If okf-maintain is unavailable, hand-write the per-folder indexes in the exact frozen format from the reference and warn the user.
For each unit's tasks.md (already in .doc-this-sdd/<unit>/), update the "Protocol drivers to implement" section with the actual interface names just declared.
Suggest:
docs(FR-NNN, FR-NNN+1): promote reverse-engineered specs (<unit-1>, <unit-2>) — OKF frontmatter, indexes, traceabilityOr per-unit:
docs(FR-001): promote orders unit from legacy reverse engineering
docs(FR-002): promote payments unit from legacy reverse engineeringdocs: is the right prefix — promotion stages documentation, no behavior ships — while the FR IDs keep the backward git trace and resolve against the just-generated index. Never suggest feat(FR-NNN) here: nothing executable ships with a promotion. Tell the user to review the staged diff before committing.
.feature collision: target filename exists. Ask the user; existing specs may be hand-written.TRACEABILITY.md is missing or malformed (curated mode): ask the user to scaffold first.traceability: generated declared in okf.yaml: halt — the repo carries a projection obligation this session cannot satisfy; never hand-write the projection and never hand-append rows into it.index.md without the generator marker: hand-authored — halt and ask before overwriting.docs/BOUNDARIES.md mentioned in an ADR but absent: warn the user that any architecture-boundary gate their project runs will fail on the first commit against a missing boundaries file; offer to scaffold.docs/bugs/: doc-this never writes there. If any unit's content was framed as a bug report, halt and ask the user to refile it manually as a human-authored BUG-NNN outside this workflow.In a client workspace — any project outside your own or your organization's namespace — this skill stops at "staged for commit": never run git commit, git push, or any deployment automatically. The user reviews and commits manually.
Report:
docs/ (count by type)docs/okf.yaml was bootstrapped (note: in a repo whose toolchain enforces OKF, this arms that gate — the staged diff is the review point), traceability mode used, index files (re)generated.feature files generated (count, runner).tessl-plugin
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