ADR-0020's stated anti-goal is satisfying the size gate by deleting content rather
than relocating it. prototype's logic.md lost three anti-patterns, including
"Don't generalise" — the one with a distinct failure mode, a throwaway growing
abstractions for hypothetical futures, and the one the logic branch is most exposed
to. It survived nowhere in the repo.
The deletion bought nothing measurable: references/ sits outside the body FAIL,
outside the 600-word suggestion and outside the Vale gate, and prototype's body is
483 words. 4011d14 restored the byte-identical defect in the sibling ui.md with
exactly that reasoning in its message and left this file alone. Restored verbatim
from main.
improve-codebase-architecture had dropped "refactoring" from its description
entirely, so "find refactoring opportunities in this repo" had no lexical match,
while spending characters on a boundary against tdd — which cannot plausibly steal
an architecture request. retrofit.md names that exact failure: an invented boundary
costs characters and buys no routing accuracy.
write-docs had dropped all four literal trigger phrasings, leaving them only in the
body and a `when:` field, neither visible to the router at routing time. Its
boundary also sent PRDs to grill-with-docs, which has no PRD flow, and the body
repeated that at two more places. Per #123 nothing in the corpus produces a PRD, so
no target was invented — the boundary is now honest about the ADR case only.
Two READMEs added by this branch contradicted the SKILL.md they document: triage's
label resolution, and grill-with-docs' fifth during-session behaviour. Unconditional
reference pointers in tdd and improve-codebase-architecture are now conditional; the
files stay at the skill root, which is #122's scope.
Refs: #114, #122, #123
ADR: 0020
write-docs
Produce technical documentation derived from code and spec, one section at a time, with a confirmation gate on every section.
What it does
Casts the agent as a technical writer with one non-negotiable constraint: every claim must be traceable to a source file line, a spec section, or an explicit user statement. Nothing is invented, and behaviour that genuinely cannot be documented from the available sources is marked out-of-scope rather than explained away.
The process is eight steps — identify scope, read and extract, gap check, draft section by section, confirmation gate, delta summary, reader testing, finalise — and several of them are deliberately gated on the human:
- Files are read only after the user approves them by name. The skill may propose candidates; it waits.
- The gap check presents what the code does say and asks the user to fill only what it does not: caller intent, error-handling rationale, non-obvious side effects.
- No section is finalised until the full revised text has been shown. The skill never gates on output the user has not seen, and never reprints the whole document — all edits are surgical.
- Reader testing predicts 5–10 questions a target reader would ask, then spawns a sub-agent that receives only the finished doc and the questions — no source files. If the doc cannot answer them, neither can the sub-agent, and the run loops back to drafting.
Summary and overview sections are written last, once the detail sections are stable.
Usage
/write-docs
Name the files or modules to document, the target audience (developer / user / contributor / internal), and the documentation type (reference, guide, README section, inline comment, changelog entry). For a PRD, ADR or decision doc, use grill-me or grill-with-docs instead — those have dedicated handling.
Files
| File | Purpose |
|---|---|
SKILL.md |
The whole skill — role, use/do-not-use boundaries, required inputs, constraints, the eight-step process, output format, failure handling, and a nine-item self-check |