docs(01-01): complete project foundation plan

Tasks completed: 2/2
- Initialize Node.js project with TypeScript and ESM
- Create source structure and entry point

SUMMARY: .planning/phases/01-core-infrastructure/01-01-SUMMARY.md

.planning/phases/01-core-infrastructure/01-01-SUMMARY.md

@@ -0,0 +1,113 @@
+---
+phase: 01-core-infrastructure
+plan: 01
+subsystem: infra
+tags: [typescript, esm, nodejs, cli]
+
+# Dependency graph
+requires: []
+provides:
+  - TypeScript project with ESM configuration
+  - Build tooling (tsc, tsx, rimraf)
+  - CLI entry point at dist/bin/cw.js
+  - Library entry point at dist/index.js
+affects: [01-02, 01-03, 01-04, 01-05]
+
+# Tech tracking
+tech-stack:
+  added: [typescript, tsx, rimraf, commander, execa]
+  patterns: [ESM modules, NodeNext resolution]
+
+key-files:
+  created: [package.json, tsconfig.json, .gitignore, src/index.ts, src/bin/cw.ts]
+  modified: []
+
+key-decisions:
+  - "Merged Tasks 1 and 2 since build verification required source files"
+
+patterns-established:
+  - "ESM with NodeNext module resolution"
+  - "Version exported from src/index.ts, imported in bin entry"
+
+# Metrics
+duration: 2min
+completed: 2026-01-30
+---
+
+# Phase 1 Plan 01: Project Foundation Summary
+
+**TypeScript ESM project with commander/execa dependencies, tsc build, tsx dev runner, and cw CLI entry point**
+
+## Performance
+
+- **Duration:** 2 min
+- **Started:** 2026-01-30T12:08:28Z
+- **Completed:** 2026-01-30T12:10:19Z
+- **Tasks:** 2
+- **Files modified:** 6
+
+## Accomplishments
+
+- Initialized Node.js project with ESM (`"type": "module"`)
+- Configured TypeScript with ES2022 target and NodeNext module resolution
+- Added core dependencies: commander (CLI), execa (process management)
+- Added dev tooling: typescript, tsx (dev runner), rimraf (clean)
+- Created CLI entry point that prints version
+- Created library entry point exporting VERSION constant
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Initialize Node.js project with TypeScript and ESM** - `d284603` (chore)
+2. **Task 2: Create source structure and entry point** - included in Task 1 commit (see deviation)
+
+**Plan metadata:** (this commit)
+
+## Files Created/Modified
+
+- `package.json` - ESM project config with scripts, dependencies, bin entry
+- `package-lock.json` - Dependency lock file
+- `tsconfig.json` - TypeScript compiler options for ES2022/NodeNext
+- `.gitignore` - Excludes node_modules and dist
+- `src/index.ts` - Library entry point with VERSION export
+- `src/bin/cw.ts` - CLI entry point with shebang
+
+## Decisions Made
+
+- Merged Tasks 1 and 2 execution since build verification required source files to exist
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 3 - Blocking] Created source files during Task 1**
+- **Found during:** Task 1 verification (npm run build)
+- **Issue:** Plan specified Task 1 should work "even with empty src" but tsc requires valid source files to compile
+- **Fix:** Created minimal src/index.ts and src/bin/cw.ts during Task 1
+- **Files modified:** src/index.ts, src/bin/cw.ts
+- **Verification:** Build succeeds, CLI runs
+- **Committed in:** d284603 (Task 1 commit)
+
+---
+
+**Total deviations:** 1 auto-fixed (blocking)
+**Impact on plan:** Task 2 had no separate commit since its files were already created in Task 1. All work completed successfully.
+
+## Issues Encountered
+
+None
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- Project foundation complete
+- Build tooling working (npm run build, npm run dev, npm run clean)
+- Ready for 01-02: CLI Entry Point
+
+---
+*Phase: 01-core-infrastructure*
+*Completed: 2026-01-30*