Create directory structure for frontend with requisite justfile changes. (#6)

Reviewed-on: #6
Co-authored-by: Drew Galbraith <drew@tiramisu.one>
Co-committed-by: Drew Galbraith <drew@tiramisu.one>

frontend/justfile

@@ -0,0 +1,70 @@
+# Frontend development commands for Captain's Log
+
+# Start development server with backend API proxy
+[working-directory: 'frontend']
+dev-frontend:
+    npm run dev
+
+# Build frontend for production (includes SSR build)
+[working-directory: 'frontend']
+build-frontend:
+    npm run build
+
+# Run all tests
+[working-directory: 'frontend']
+test-frontend:
+    npm run test:run
+
+# Run tests with coverage reporting
+[working-directory: 'frontend']
+test-coverage-frontend:
+    npm run test:coverage
+
+# Run tests in watch mode
+[working-directory: 'frontend']
+test-watch-frontend:
+    npm run test
+
+# Run TypeScript type checking
+[working-directory: 'frontend']
+typecheck-frontend:
+    npm run typecheck
+
+# Lint code with ESLint
+[working-directory: 'frontend']
+lint-frontend:
+    npm run lint
+
+# Fix linting issues automatically
+[working-directory: 'frontend']
+lint-fix-frontend:
+    npm run lint:fix
+
+# Format code with Prettier
+[working-directory: 'frontend']
+fmt-frontend:
+    npm run format
+
+# Check if code is properly formatted
+[working-directory: 'frontend']
+fmt-check-frontend:
+    npm run format:check
+
+# Install dependencies
+[working-directory: 'frontend']
+install-frontend:
+    npm install
+
+# Clean build artifacts and dependencies
+[working-directory: 'frontend']
+clean-frontend:
+    rm -rf build .react-router node_modules
+
+# Start production server
+[working-directory: 'frontend']
+start-frontend:
+    npm run start
+
+# Run full quality checks (lint + format + typecheck + test)
+[working-directory: 'frontend']
+check-frontend: lint-frontend fmt-check-frontend typecheck-frontend test-frontend