Files
claude-foundations/memory/decisions.md
Paul O'Reilly e94417b896 Add best practices, hooks, memory files, and scripts from recent sessions
Includes: spec-driven and test-driven development best practices,
reproduce-before-fixing debugging workflow, require-plan-file hook,
find-project-root script, session logs, memory files for decisions/
gotchas/process-lessons, and updates to existing best practice topics.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-17 09:47:47 +13:00

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# Architecture & Design Decisions
## Knowledge Pipeline: Separate /reflect-logs from /reflect
`/reflect-logs` handles continuous log processing; `/reflect` handles milestone reflections. Different purpose, different cadence — combining them would overcomplicate the milestone skill.
## Knowledge Pipeline: MD5 for reflection state, git SHAs for distill state
Log files may not be committed when reflected on, so MD5 of file content is the right identity. `/distill-best-practices` works across committed repos, so git SHAs are appropriate there.
## Knowledge Pipeline: Pruning happens in /log, not /reflect-logs
`/log` runs most frequently (every session end), so it naturally keeps the log directory clean as a side effect.
## Knowledge Pipeline: /distill-best-practices is interactive
Cross-project convention changes need human judgment. The skill proposes updates and waits for approval before writing.
## Session Logs: Timestamp-based IDs (HHMMSS)
Human-readable, naturally sorted, no external dependencies. Format: `YYYY-MM-DD.HHMMSS.md`.
## Linting: Formatter exit codes vs hook exit codes
Formatter scripts exit 1 on lint errors. The dispatcher hook decides the final exit code (exit 2 for PostToolUse feedback). This separates formatter logic from hook semantics — same scripts work for both PostToolUse and pre-commit.
## Linting: Checkpoint via git hash-object with .pre-lint sidecar
Fast (~1ms), no commits or stash needed, orphan blobs auto-GC'd. Falls back to `cp` outside git repos.
## Linting: Project opt-in via formatter symlinks
Projects opt in by having a `formatters/` directory with symlinks back to canonical scripts. Zero-config, visible in `ls`, no parsing needed. The hook walks up the directory tree to find `formatters/`.
## CLAUDE.md: Remove technology-specific sections from root
Ansible and Helm sections removed from root CLAUDE.md — already covered with more detail in `best-practices/ansible.md` and `best-practices/helm.md`. Technology-specific practices belong in best-practices, not root guidelines.
## context-load: Walk upward collecting context files
Walks from cwd upward collecting CLAUDE.md, CONTEXT.md, MEMORY.md, BESTPRACTICES.md at each level. Gives hierarchical context inheritance — highest ancestor provides global guidelines, project dir provides specifics.
## context-load: Dedup via readlink -f
Root CLAUDE.md is a symlink to claude-foundations. Without dedup it would load twice. `readlink -f` resolves all symlinks before comparison.
## context-load: Tree depth 3
Deep enough to show project structure without overwhelming output. Applied at every CLAUDE.md location.
## CONTEXT.md follows MEMORY.md pattern
Thin index + `context/` folder. Consistency with MEMORY.md. CONTEXT.md focuses on active work for agent orientation; MEMORY.md on accumulated learnings.