feat(logging): add professional logging with pino and headless E2E tests - Add ILogger port interface in application layer - Implement PinoLogAdapter with Electron-compatible structured logging - Add NoOpLogAdapter for testing - Wire logging into DI container and all adapters - Create 32 E2E tests for automation workflow (headless-only) - Add vitest.e2e.config.ts for E2E test configuration - All tests enforce HEADLESS mode (no headed browser allowed)

packages/infrastructure/config/LoggingConfig.ts

@@ -0,0 +1,82 @@
+import type { LogLevel } from '../../application/ports/ILogger';
+
+export type LogEnvironment = 'development' | 'production' | 'test';
+
+export interface LoggingEnvironmentConfig {
+  level: LogLevel;
+  prettyPrint: boolean;
+  fileOutput: boolean;
+  filePath?: string;
+  maxFiles?: number;
+  maxFileSize?: string;
+}
+
+/**
+ * Load logging configuration from environment variables.
+ * 
+ * Environment variables:
+ * - NODE_ENV: 'development' | 'production' | 'test' (default: 'development')
+ * - LOG_LEVEL: Override log level (optional)
+ * - LOG_FILE_PATH: Path for log files in production (default: './logs/gridpilot')
+ * - LOG_MAX_FILES: Max rotated files to keep (default: 7)
+ * - LOG_MAX_SIZE: Max file size before rotation (default: '10m')
+ * 
+ * @returns LoggingEnvironmentConfig with parsed environment values
+ */
+export function loadLoggingConfig(): LoggingEnvironmentConfig {
+  const envValue = process.env.NODE_ENV;
+  const environment = isValidLogEnvironment(envValue) ? envValue : 'development';
+  
+  const defaults = getDefaultsForEnvironment(environment);
+  
+  const levelOverride = process.env.LOG_LEVEL;
+  const level = isValidLogLevel(levelOverride) ? levelOverride : defaults.level;
+  
+  return {
+    level,
+    prettyPrint: defaults.prettyPrint,
+    fileOutput: defaults.fileOutput,
+    filePath: process.env.LOG_FILE_PATH || './logs/gridpilot',
+    maxFiles: parseIntSafe(process.env.LOG_MAX_FILES, 7),
+    maxFileSize: process.env.LOG_MAX_SIZE || '10m',
+  };
+}
+
+function getDefaultsForEnvironment(env: LogEnvironment): LoggingEnvironmentConfig {
+  switch (env) {
+    case 'development':
+      return {
+        level: 'debug',
+        prettyPrint: true,
+        fileOutput: false,
+      };
+    case 'production':
+      return {
+        level: 'info',
+        prettyPrint: false,
+        fileOutput: true,
+      };
+    case 'test':
+      return {
+        level: 'warn',
+        prettyPrint: false,
+        fileOutput: false,
+      };
+  }
+}
+
+function isValidLogEnvironment(value: string | undefined): value is LogEnvironment {
+  return value === 'development' || value === 'production' || value === 'test';
+}
+
+function isValidLogLevel(value: string | undefined): value is LogLevel {
+  return value === 'debug' || value === 'info' || value === 'warn' || value === 'error' || value === 'fatal';
+}
+
+function parseIntSafe(value: string | undefined, defaultValue: number): number {
+  if (value === undefined || value === '') {
+    return defaultValue;
+  }
+  const parsed = parseInt(value, 10);
+  return isNaN(parsed) ? defaultValue : parsed;
+}