Implement Phase 1: Foundation

- Set up TypeScript project with strict mode
- Configure tsup build system (ESM output)
- Configure vitest for testing (36 tests passing)
- Configure ESLint with flat config for TypeScript
- Implement Commander.js CLI with all 4 commands:
  - init: Configure API keys with validation
  - new: Create new Ralph Method project (stub)
  - validate: Validate PROMPT.md files
  - research: Research topics via Perplexity (stub)
- Implement config management:
  - Keys stored in ~/.ralph-generator/config.json
  - File permissions set to 600
  - Environment variables override file config
- Implement logging utility with verbosity levels
- Implement atomic file writes utility

All Phase 1 acceptance criteria met.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tsconfig.json

@@ -0,0 +1,24 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "lib": ["ES2022"],
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "declaration": true,
+    "declarationMap": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}