{"id":"042a7771-8e9a-4b30-9fb6-5f0128da1455","shortId":"4R9WnN","kind":"skill","title":"pmstudio-changelog","tagline":"Create or update a structured change log for a product or platform. Use when someone asks to \"create a change log\", \"log this change\", \"what changed\", \"update the change log\", \"release notes\", or \"changelog\". Reads project memory (CLAUDE.local.md Recent Changes) and meeting notes","description":"# Change Log — Running Product Change Record\n\n## Purpose\n\nMaintains a chronological, append-only record of all meaningful changes to a product. Unlike CLAUDE.local.md (which is AI context), the change log is a **stakeholder-facing** document suitable for sharing with leadership, auditors, and team members.\n\n## Process\n\n### Step 1: Determine Mode\n\n- **`/change-log init`** — Create new change log, backfill from CLAUDE.local.md\n- **`/change-log update`** — Find changes since last entry, propose new entries\n- **`/change-log release {version}`** — Create release summary from accumulated entries\n- **`/change-log`** (no args) — Same as `update`\n\n### Step 2: Read Context\n\n**Always read:**\n- `CLAUDE.local.md` — Recent Changes section (primary source of truth for what changed)\n- Existing change log file (if `update` or `release` mode)\n\n**For `init` mode, also read:**\n- `Meeting-Notes/` directory listing — to identify decision-bearing meetings\n- `PRD/` — version history sections\n- `.sync-watch.json` — project name\n\n**For `update` mode:**\n- Find the date of the last change log entry\n- Read any `Meeting-Notes/` files dated after that\n- Read `CLAUDE.local.md` Recent Changes entries dated after that\n\n### Step 3: Extract Changes\n\nFor each source, extract structured change data:\n\n```\n- Date: YYYY-MM-DD\n- Summary: one-line description\n- Type: Feature | Enhancement | Bug Fix | Configuration | Process | Security | Documentation\n- Impact: High | Medium | Low\n- Components: which modules/layers/documents were affected\n- Author: who made or requested the change\n- Approved By: who approved (if known from meeting notes)\n- Details: bullet list of specific changes\n- Rationale: why the change was made\n- Downstream: what else was updated as a result\n```\n\n**Impact classification:**\n- **High** — Changes product behavior, affects users, or modifies architecture\n- **Medium** — Updates documentation, adds stakeholders, changes processes\n- **Low** — Minor fixes, formatting, internal-only changes\n\n### Step 4: Propose Entries (update/init)\n\nPresent proposed entries to user before writing:\n\n```markdown\n## Proposed Change Log Entries\n\n### [2026-03-17] PRD v0.9 — User Journey Sections\n**Type:** Enhancement | **Impact:** High\n**Components:** ProductB PRD, ProductB PRD Presentation\n- Added Current User Journey (6-step timeline)\n- Added Future User Journey (3-layer cascading)\n- Renumbered all sections (19 total)\n\nAccept? [Y/n] or modify?\n```\n\n### Step 5: Write\n\n**File location:** `Data/Change-Log-{ProjectName}.md`\n\n**File structure:**\n\n```markdown\n# Change Log — {Product Name}\n\n> Running record of all changes. Newest entries first.\n> Generated and maintained via `/change-log` skill.\n\nLast updated: {date}\nTotal entries: {count}\n\n---\n\n## [YYYY-MM-DD] v{X.Y} — {Summary}\n\n**Type:** {type} | **Impact:** {impact}\n**Components:** {affected components}\n**Author:** {name} | **Approved By:** {name or \"—\"}\n\n### Changes\n- {specific change 1}\n- {specific change 2}\n\n### Rationale\n- {why this change was made}\n\n### Downstream Effects\n- {what else was updated}\n\n---\n\n## [YYYY-MM-DD] ...\n```\n\n**For `release` mode:**\n\nCollect all entries since the last release entry (or all entries if first release). Produce a summary:\n\n```markdown\n## Release: v{version} — {date}\n\n### Summary\n{2-3 sentence overview of what this release includes}\n\n### Changes Included\n| Date | Type | Summary | Impact |\n|------|------|---------|--------|\n| ... | ... | ... | ... |\n\n### Highlights\n- {Most important change}\n- {Second most important}\n\n### Known Issues\n- {Any caveats}\n```\n\n## Critical Rules\n\n1. **Append-only.** Never modify existing entries. Only add new ones at the top.\n2. **Propose before writing.** Always show the user what entries will be added.\n3. **Don't duplicate.** Check existing entries before proposing. If a change is already logged, skip it.\n4. **Real content only.** Don't log trivial changes (typo fixes, formatting) unless the user specifically asks.\n5. **Dates from sources.** Use the date from CLAUDE.local.md or meeting notes, not today's date, for the change date. 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