docs: initialize blueprint development structure (#171)

## Summary

- Initialize Blueprint Development v3.2.0 with manifest, task registry,
and directory structure
- Migrate 13 existing ADRs from `docs/adr/` to `docs/adrs/` (blueprint
convention)
- Derive PRD-001 (project overview) from README, CLAUDE.md, and
component docs
- Derive 3 new ADRs from git history: profile-based packages (0014),
gitleaks (0015), shell completions (0016)
- Create 3 PRPs for future work: Fish shell, NixOS, Sketchybar
- Generate 5 new Claude rules: development, testing,
document-management, chezmoi-conventions, dependency-management
- Update CLAUDE.md with blueprint references

## Test plan

- [ ] `chezmoi diff ~/.claude` shows no changes (rules synced)
- [ ] `chezmoi apply --dry-run` runs clean
- [ ] `pre-commit run --all-files` passes (actionlint warnings are
pre-existing)
- [ ] `docs/adrs/README.md` index includes all 16 ADRs
- [ ] `docs/blueprint/manifest.json` is valid JSON with v3.2.0 format

## Follow-up

- [ ] Run `/configure:select` for infrastructure standards audit
(separate PR)
- [ ] Run `/blueprint:adr-validate` after merge to check
cross-references
- [ ] Create GitHub issues for PRD-001 and PRPs (GitHub MCP auth was
unavailable)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: laurigates

.gitignore

@@ -18,6 +18,9 @@ settings.local.json
 
 tmp/
 
+# Blueprint work orders (task-specific, may contain sensitive details)
+docs/blueprint/work-orders/
+
 # Security: prevent accidental commit of secrets/credentials
 .env
 .env.*

CLAUDE.md

@@ -72,6 +72,16 @@ pre-commit run detect-secrets --all-files
 - **smoke.yml** — Multi-platform (Ubuntu/macOS) linting and build
 - **claude.yml** — AI-assisted dev with auto plugin install from [laurigates/claude-plugins](https://github.com/laurigates/claude-plugins)
 
+## Blueprint Documentation
+
+Blueprint v3.2.0 manages project documentation and rules.
+
+- **PRD**: `docs/prds/project-overview.md` — Feature requirements and scope
+- **ADRs**: `docs/adrs/` — 16 Architecture Decision Records ([index](docs/adrs/README.md))
+- **PRPs**: `docs/prps/` — Implementation plans (fish, NixOS, sketchybar)
+- **Manifest**: `docs/blueprint/manifest.json` — Configuration and task registry
+- **Commands**: `/blueprint:status`, `/blueprint:execute`, `/blueprint:derive-plans`
+
 ## Sub-documentation
 
 - `exact_dot_claude/CLAUDE.md` — Claude Code design and directory structure
@@ -80,6 +90,7 @@ pre-commit run detect-secrets --all-files
 - `private_dot_config/CLAUDE.md` — Application configuration
 - `private_dot_config/nvim/CLAUDE.md` — Neovim configuration
 - `scripts/CLAUDE.md` — Maintenance scripts
+- `docs/blueprint/README.md` — Blueprint structure overview
 
 ## Security & Release