changelog-collect

name	changelog-collect
description	Generate a weekly changelog entry from git history. Collects commits for a date range, filters noise, clusters by theme, writes an editorial summary, and outputs a ChangelogEntry file. Default behavior stops for review; pass --commit to also commit.
user_invocable	true

Changelog Collection Skill

Generate a complete changelog entry for a given period. Default range is "since the previous published entry."

Invocation

/changelog-collect                                   # from previous entry's `to` date → today
/changelog-collect 2026-03-17 2026-03-24             # explicit ISO range
/changelog-collect 2026-03-17 2026-03-24 --commit    # also commit (default prints for review)
/changelog-collect 2026-03-17 2026-03-24 --force     # allow overlap with an existing entry

Extended reference (edge cases, history, examples): read ./reference.md when needed.

Workflow

1. Resolve the date range

If two ISO dates are provided, use them as from and to.

Otherwise:

• List src/data/changelogs/*.ts (exclude index.ts, types.ts, __tests__/).
• Pick the newest by filename; read its dateRange.to.
• Set from = previous_to + 1 day, to = today.

Overlap guard: if the requested range intersects any existing entry's [from, to], refuse unless --force is passed. Report which entry it overlaps.

2. Collect commits

Use 8-char hashes (matches the card's slice(0, 8) display) and skip merges:

git log --no-merges --abbrev=8 --since="<from>" --until="<to> 23:59:59" --format="%h %s"

Keep the default newest-first ordering for commits[] — existing entries follow it.

3. Strip operational noise

Drop commits matching any of these patterns from both commits[] and cluster analysis:

• ^chore(\([^)]+\))?: update hotspot ratchet baseline
• ^chore(\([^)]+\))?: refresh hotspot ratchet
• ^chore(\([^)]+\))?: satisfy hotspot ratchet
• ^chore(\([^)]+\))?: update .* coverage baseline
• ^(docs|Docs|Agent Docs) cleanup$
• ^\[skip ci\]
• ^Merge branch 'worktree-agent-
• ^Merge pull request #\d+ from [^ ]+/dependabot/
• ^chore\(deps(-dev)?\): bump
• ^Revert "Revert " → treat as a no-op pair; drop both the revert-of-revert and its original revert if both appear

If filtering removes >50% of the raw range, surface a note ("Filtered N noise commits — please sanity-check") in the review output.

4. Cluster by theme

Group the surviving commits by conventional prefix (feat, fix, docs, refactor, chore, test, ci, style, perf) and scope.

Aim for 5–8 clusters. Combine related work before adding filler; never split one story into two thin clusters to avoid hitting 9. A quiet 5-day cycle with one major shipping item is fine.

5. Detect milestone facts

Actively check these signals — they often belong in the headline or a labeled cluster:

• Stablecoin count crossings: compare the count implied by shared/data/stablecoins/coins.generated.json (or the npm run check:doc-counts output) against the previous entry's claim. A crossing (e.g., 192 → 194) is headline-worthy.
• Methodology version bumps: grep filtered commits for v\d+\.\d+\d? (e.g., v6.93, v5.0). Map each bump to a cluster with the correct href (see step 7).
• New data source integrations: updates the about page too — flag so the reviewer can cross-check.

6. Write the headline (≤ 120 chars)

Template: [Big move 1], [big move 2], and [big move 3].

Each "big move" is a concrete, user-facing shipping fact.

Do: name shipped features; cite a number when meaningful; end with a period. Don't: open with "This week we…" / "Various improvements…" / "Multiple fixes across…"; don't write a purely infra headline unless infra genuinely is the story (a major migration, auth rollout, etc.).

7. Write summary items

For each cluster, one SummaryItem:

• label (2–4 words, noun phrase): "Broader coverage", "Yield intelligence overhaul", "Stronger pipelines" — never "We broadened coverage".
• tag (always set explicitly — don't rely on the card's inferTag() fallback):
  • feature — new capabilities, scoring updates, integrations
  • security — auth, hardening, audit remediation
  • coverage — stablecoin additions, reserve expansion, data sources
  • infra — pipeline reliability, cron, sync, CI, status page
  • design — UI/UX polish, onboarding, motion, navigation
• description (≤ 220 chars, 1–3 sentences): user-facing impact, not a git log. Combine related commits into one sentence about the area, not a bulleted enumeration.
• href (set whenever a methodology is versioned or touched).

8. Write Field Notes

Populate fieldNotes for every new entry. This is the recurring Editor's note slot rendered above the structural summary list, so treat it as part of the changelog contract rather than optional decoration.

Requirements:

• 45-80 words.
• One paragraph.
• Editorial synthesis of what the week meant, not a commit summary.
• No bullets, commit hashes, Markdown, or "this release refactored..." phrasing.
• Modest claims when the evidence is mostly maintenance or validation work.

Use headline for the compact thesis, fieldNotes for the human framing, and summary[] for the commit-derived facts.

9. Build the commits list

Format the surviving commits as CommitRef[]:

• hash: 8-char abbreviation.
• message: full first line, unmodified.

Order: newest first (matches git log default and existing entries).

10. Self-check before writing

Hard checks (must pass):

• commits.length === stats.totalCommits (the card renders stats.totalCommits; divergence misleads readers).
• Every summary[i].tag is one of the five enum values.
• Every summary[i].description.length <= 220.
• headline.length <= 120.
• fieldNotes is present and 45-80 words.
• dateRange.from <= dateRange.to.
• No existing changelog file overlaps the date range (re-verify after step 1 in case a parallel push landed).

Soft checks (warn, don't block):

• summary.length outside 5–8.
• A cluster touches a methodology but has no href.
• A coin count / adapter count / methodology version cited in the summary doesn't match the source of truth.

stats.totalCommits reflects the filtered count (after step 3). This is a deliberate break from older entries, which counted raw commits; do not try to match historical totals.

11. Write the entry file

Path: src/data/changelogs/<to>.ts (e.g., 2026-04-24.ts).

import type { ChangelogEntry } from "./types";

export const entry: ChangelogEntry = {
  dateRange: { from: "<from>", to: "<to>" },
  headline: "<one-sentence thesis, ≤120 chars>",
  fieldNotes: "<45-80 word editor's note>",
  summary: [
    { label: "...", tag: "feature", description: "...", href: "/methodology/..." },
    // 5–8 items
  ],
  stats: { totalCommits: <N> },
  commits: [
    { hash: "<8-char>", message: "<first line>" },
    // exhaustive, after noise filter
  ],
};

12. Update the barrel

Edit src/data/changelogs/index.ts:

• Insert the import in chronological order (existing convention — don't just append):

  import { entry as e<YYYYMMDD> } from "./<YYYY-MM-DD>";
  

• Insert e<YYYYMMDD> into the all array, also in chronological order.

The barrel's .sort() handles runtime ordering; the chronological layout exists for diff readability.

13. Verify

Run the relevant gates locally:

npx tsc --noEmit                           # Catches bad tag enum, missing fields
npm run lint
npm test -- src/data/changelogs/           # Type + barrel tests
npm run check:doc-counts                   # Only if the summary cites a coin count

Cross-check any cited number (coin count, reserve adapter total, methodology version) against the source of truth.

Also confirm every href path exists under src/app/methodology/ before declaring done.

14. Present for review (default) or commit (--commit)

Default (no --commit): print to the user:

• Path of the new entry file
• Final headline
• fieldNotes
• Each summary label (+ tag)
• stats.totalCommits
• Any filter-warning notes from step 3
• Any soft-check warnings from step 9

Then stop. Wait for review.

With --commit: stage and commit only after all hard checks in step 9 pass:

git add src/data/changelogs/<to>.ts src/data/changelogs/index.ts
git commit -m "docs(changelog): add changelog for <from> to <to>"

Per CLAUDE.md, run npm run test:merge-gate before any push.