feat: complete Week 1 foundation setup

- Setup project structure with TypeScript, ESLint, Prettier
- Configure build pipeline with tsup
- Setup testing framework with Vitest
- Implement core TypeScript interfaces and types
- Create comprehensive error hierarchy
- Setup constants and configuration utilities
- Implement logging system
- Create CLI framework with Commander.js
- Setup CI/CD pipelines with GitHub Actions
- Add initial unit tests

All acceptance criteria for Week 1 (Task 1.1, 1.2, 1.3) completed:
✓ npm install works
✓ npm test runs with 12 passing tests
✓ npm run build produces dist/
✓ Type checking passes
✓ Linting passes
✓ oct --help and oct --version work

Author: lucaforni

.eslintrc.json

@@ -0,0 +1,30 @@
+{
+  "root": true,
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": 2022,
+    "sourceType": "module",
+    "project": "./tsconfig.json"
+  },
+  "plugins": ["@typescript-eslint", "prettier"],
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:@typescript-eslint/recommended-requiring-type-checking",
+    "prettier"
+  ],
+  "rules": {
+    "prettier/prettier": "error",
+    "@typescript-eslint/explicit-function-return-type": "warn",
+    "@typescript-eslint/no-explicit-any": "error",
+    "@typescript-eslint/no-unused-vars": [
+      "error",
+      {
+        "argsIgnorePattern": "^_",
+        "varsIgnorePattern": "^_"
+      }
+    ],
+    "@typescript-eslint/consistent-type-imports": "error"
+  },
+  "ignorePatterns": ["dist", "node_modules", "*.config.ts"]
+}

.github/workflows/ci.yml

@@ -0,0 +1,69 @@
+name: CI
+
+on:
+  push:
+    branches: [main, develop]
+  pull_request:
+    branches: [main, develop]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        node-version: [18.x, 20.x]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run linter
+        run: npm run lint
+
+      - name: Run type check
+        run: npm run typecheck
+
+      - name: Run tests
+        run: npm run test:coverage
+
+      - name: Upload coverage to Codecov
+        if: matrix.os == 'ubuntu-latest' && matrix.node-version == '20.x'
+        uses: codecov/codecov-action@v3
+        with:
+          files: ./coverage/coverage-final.json
+          flags: unittests
+          name: codecov-umbrella
+
+  build:
+    runs-on: ubuntu-latest
+    needs: test
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20.x'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: dist
+          path: dist/

.github/workflows/release.yml

@@ -0,0 +1,44 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20.x'
+          registry-url: 'https://registry.npmjs.org'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test
+
+      - name: Build
+        run: npm run build
+
+      - name: Publish to npm
+        run: npm publish --provenance --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v1
+        with:
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -0,0 +1,32 @@
+# Dependencies
+node_modules/
+
+# Build output
+dist/
+
+# Testing
+coverage/
+
+# Logs
+*.log
+logs/
+
+# Environment
+.env
+.env.local
+.env.*.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Temporary files
+*.tmp
+.temp/

.prettierignore

@@ -0,0 +1,4 @@
+dist
+node_modules
+coverage
+*.md

.prettierrc.json

@@ -0,0 +1,10 @@
+{
+  "semi": true,
+  "trailingComma": "es5",
+  "singleQuote": true,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false,
+  "arrowParens": "always",
+  "endOfLine": "lf"
+}