archive: Archive Session Learnings

# Archive Skill Capture, index, and reuse project knowledge across sessions. ## When to Archive - After completing a significant task (deploy, migration, major feature) - After resolving a tricky debugging session - When the user says "archive this" - After any multi-step process with learnings worth preserving ## When to Consult Archives - Before debugging infrastructure, deploy, or CI issues - Before repeating a process done in a past session - When encountering an error that may have been solved before **Search**: `grep -ri "keyword" .archive/` **Index**: `.archive/MEMORY.md` ## Archive Workflow 1. Read `.archive/MEMORY.md` — check for related existing archives 2. Create `.archive/YYYY-MM-DD/` directory if needed 3. Write markdown file with YAML frontmatter (see `references/TEMPLATE.md`) 4. **Update `.archive/MEMORY.md`**: add one-line entry under the right category 5. If related archives exist, add `related` field in frontmatter ## Lookup Workflow 1. Read `.archive/MEMORY.md` to find relevant entries 2. Read the specific archive file for detailed context 3. Apply learnings to current task ## Categories - **infrastructure** — AWS, ECS, IAM, networking, secrets, CloudWatch - **release** — TestFlight, versioning, Git Flow, CHANGELOG - **debugging** — Bug fixes, error resolution, gotchas - **feature** — Feature design, implementation notes - **design** — UI/UX, icons, visual design ## Rules - `.archive/` must be in `.gitignore` — local-only notes - Keep entries concise but reproducible - Focus on **problems, fixes, and exact commands** - Always update MEMORY.md after creating an archive - Use descriptive filenames (e.g., `cloudwatch-logging.md` not `session.md`) - Include YAML frontmatter with `tags`, `category`, and optional `related`