Initial commit: copilot-skill-factory v0.1.0

Meta-plugin for GitHub Copilot CLI that watches workflows and
auto-generates reusable agent skills.

- postToolUse hook: fingerprints and logs tool calls per session
- sessionEnd hook: sliding-window pattern detection across sessions
- sessionStart hook: injects context about proposed skills
- /skill-factory slash command for reviewing/managing skills
- 13 passing tests validating observer, analyzer, and edge cases

Inspired by hermes-skill-factory (Romanescu11/hermes-skill-factory)

skills/skill-factory/SKILL.md

@@ -0,0 +1,91 @@
+---
+name: skill-factory
+description: >
+  Meta-skill for managing automatically detected workflows. Review proposed skills,
+  inspect detected patterns, and turn your repeated tool-call sequences into
+  reusable Copilot CLI agent skills. Use /skill-factory review to see what's ready.
+argument-hint: '[review|propose|list|status|save <name>|dismiss <name>|clear]'
+---
+
+# 🏭 Skill Factory
+
+> **The meta-skill that creates skills.**
+> Automatically watches your workflows and turns them into reusable agent skills.
+
+## Commands
+
+When the user types `/skill-factory` (with or without arguments), follow this guide:
+
+### `/skill-factory review`
+Show all proposed skills ready for review. For each one:
+1. Read the `SKILL.md` in `~/.copilot/skills/skill-factory/proposed/<name>/SKILL.md`
+2. Read the `.proposal.json` for metadata (session count, occurrences)
+3. Present a summary to the user and ask if they want to:
+   - **Accept** — move to `~/.copilot/skills/<name>/` (makes it active)
+   - **Edit** — open the SKILL.md for editing first
+   - **Dismiss** — archive to `~/.copilot/skills/skill-factory/dismissed/`
+   - **Skip** — leave as-is for later
+
+### `/skill-factory propose`
+Force analysis of current session patterns. Read the pattern database:
+- `~/.copilot/skills/skill-factory/.data/pattern-db.json` (or in the plugin's data directory)
+- Show the top 5 most frequent patterns (by session count)
+- For each, describe the tool-call sequence and ask if the user wants to generate a skill
+
+### `/skill-factory list`
+List all skills generated by Skill Factory (both proposed and accepted):
+- `~/.copilot/skills/skill-factory/proposed/` — proposed
+- `~/.copilot/skills/<name>/` — accepted (look for `.factory.json` marker)
+
+### `/skill-factory status`
+Show Skill Factory statistics:
+- Number of sessions tracked
+- Number of patterns detected
+- Number of proposed/accepted/dismissed skills
+- Read from `~/.copilot/skills/skill-factory/.data/pattern-db.json`
+
+### `/skill-factory save <name>`
+Save the last proposal with a custom name. Used when the user wants to rename a proposed skill.
+
+### `/skill-factory dismiss <name>`
+Dismiss a proposed skill. Moves it to `~/.copilot/skills/skill-factory/dismissed/`.
+
+### `/skill-factory clear`
+Clear the pattern database and all proposed skills. Asks for confirmation first.
+
+## Data Locations
+
+| Data | Path |
+|---|---|
+| Pattern database | `~/.copilot/skills/skill-factory/.data/pattern-db.json` |
+| Proposed skills | `~/.copilot/skills/skill-factory/proposed/<name>/` |
+| Accepted skills | `~/.copilot/skills/<name>/` (with `.factory.json` marker) |
+| Dismissed skills | `~/.copilot/skills/skill-factory/dismissed/<name>/` |
+| Session logs | `~/.copilot/skills/skill-factory/.data/sessions/<id>.jsonl` |
+
+## Accepting a Skill
+
+When the user accepts a proposed skill:
+1. Read the `SKILL.md` from `proposed/<name>/`
+2. Create `~/.copilot/skills/<name>/SKILL.md` with the content
+3. Create `~/.copilot/skills/<name>/.factory.json` with:
+   ```json
+   { "generatedBy": "skill-factory", "generatedAt": "<ISO timestamp>", "patternKey": "<key>" }
+   ```
+4. Remove from `proposed/<name>/`
+5. Tell the user the skill is now active and can be invoked with `/<name>`
+
+## Dismissing a Skill
+
+When the user dismisses a proposed skill:
+1. Move `proposed/<name>/` to `dismissed/<name>/`
+2. Update the pattern in the DB to mark it as dismissed
+
+## Important Notes
+
+- The plugin (`copilot-skill-factory`) handles automatic pattern detection via hooks.
+- This skill handles user interaction — reviewing, accepting, editing, dismissing.
+- Always confirm before deleting or moving files.
+- If the data directory doesn't exist yet, tell the user the plugin needs to run for at least one session first.
+- Proposed skills are **suggestions** — they may need editing before they're useful.
+- Encourage the user to customize accepted skills with specific instructions, pitfalls, and examples.