refactor(work): drop date prefixes + move _state.json into _system/

Convention shift: epic folders + PRD filenames + frontmatter id
fields are now bare slugs. The created: timestamp (Phase 2) carries
the date; folder names don't repeat it. A future <task-id>-<slug>
shape (e.g. ClickUp) lands cleanly when that integration ships.

Renames (git mv preserves history):
- docs/work/2026-05-13-binder-wrap-helper/
    -> docs/work/binder-wrap-helper/
- docs/work/2026-05-14-library-evaluation-policy/
    -> docs/work/library-evaluation-policy/
- docs/work/2026-05-14-ci-security-and-supply-chain/
    -> docs/work/ci-security-and-supply-chain/
- docs/work/prds/2026-05-13-binder-wrap-helper.prd.md
    -> docs/work/prds/binder-wrap-helper.prd.md
- docs/work/prds/2026-05-13-coverage-architecture.prd.md
    -> docs/work/prds/coverage-architecture.prd.md
- docs/work/prds/2026-05-14-library-evaluation-policy.prd.md
    -> docs/work/prds/library-evaluation-policy.prd.md
- docs/work/prds/2026-05-14-ci-security-and-supply-chain.prd.md
    -> docs/work/prds/ci-security-and-supply-chain.prd.md

Frontmatter updates inside the renamed files: epic id, epic prd,
story epic, PRD id, PRD builds-on all drop date prefixes.

System folder + state file move:
- New docs/work/_system/ holds framework-managed state.
- docs/work/_state.json -> docs/work/_system/_state.json.
- state-builder.mjs adds _system to SKIP_FOLDERS.
- cli.mjs + state-sync-guard.mjs + .husky/pre-commit point at the
  new path.

template-reset-v1 epic deleted entirely (one-off cleanup epic from
the pre-date-convention era; status was already done).

Generator-template updates (so new artifacts ship in the right
shape):
- .sandcastle/decomposer.prompt.md emits bare-slug folder names +
  ISO created: timestamp.
- .claude/skills/to-prd/SKILL.md template uses bare-slug filename +
  bare-slug id field + ISO created: timestamp.

Doc reference updates: glossary, runbook, agent-first-workflow-
and-conformance, reviewer prompt, ADR-020, ADR-022, ADR-023 all
point at the new paths/slugs.
This commit is contained in:
2026-05-14 21:16:51 +02:00
parent 90fc2853f2
commit bae4b66fa4
43 changed files with 109 additions and 161 deletions

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---
id: 05-human-guide
epic: library-evaluation-policy
title: Human reading-room guide — docs/guides/adding-a-library.md
type: technical-story
status: done
feature: docs
depends-on: [04-evaluate-library-skill]
blocks: [09-claude-md-update]
created: 2026-05-14T06:52:02+02:00
updated: 2026-05-14T19:16:52.691Z
---
## Goal
Write `docs/guides/adding-a-library.md` — the human-readable guide explaining the library evaluation policy with worked examples (one approved, one rejected), the tier trigger, the four enforcement layers, and how to invoke the skill. The guide targets a maintainer reading the repo for the first time.
## Why
ADR-022 is the source of truth but is written for decision-record density, not onboarding. The guide translates the policy into a narrative that answers "why does this exist?" and "what do I actually do?" before a developer encounters the pre-commit gate for the first time. Worked examples anchor the abstract filter list to concrete outcomes.
## Done when
- `docs/guides/adding-a-library.md` exists with: (1) a "Why this exists" section explaining the uncodified-surface problem and the three signals from the PRD; (2) the tier trigger (feature/core packages require traces; app-tier does not; devdeps exempt); (3) the four enforcement layers (Claude hook → skill → pre-commit → sandcastle) in latency order; (4) step-by-step "how to add a library" walkthrough pointing at the `/evaluate-library` skill; (5) a worked approved example (brief — the full trace lives in `EXAMPLES/` from Story 04); (6) a worked rejected example (`trpc-to-openapi`, `named-consumer: fail`); (7) a link to ADR-022 and `docs/library-decisions/_template.md`.
- `pnpm lint && pnpm fallow:audit` pass.
## In scope
- `docs/guides/adding-a-library.md` — the guide document.
## Out of scope
- The skill itself (Story 04) — already landed.
- CLAUDE.md update (Story 09) — that bullet points here and to ADR-022 but lands separately.
- Changing any existing guide or ADR.
## Tasks
- [x] Write `docs/guides/adding-a-library.md` with all seven sections from Done when (why, tier trigger, four layers, how-to walkthrough, worked approved + rejected examples, cross-links); all gates pass on this single commit.