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/application/ports/ILogger.ts

@@ -0,0 +1,35 @@
+/**
+ * Log levels in order of severity (lowest to highest)
+ */
+export type LogLevel = 'debug' | 'info' | 'warn' | 'error' | 'fatal';
+
+/**
+ * Contextual metadata attached to log entries
+ */
+export interface LogContext {
+  /** Unique session identifier for correlation */
+  sessionId?: string;
+  /** Current automation step (1-18) */
+  stepId?: number;
+  /** Step name for human readability */
+  stepName?: string;
+  /** Adapter or component name */
+  adapter?: string;
+  /** Operation duration in milliseconds */
+  durationMs?: number;
+  /** Additional arbitrary metadata */
+  [key: string]: unknown;
+}
+
+/**
+ * ILogger - Port interface for application-layer logging.
+ */
+export interface ILogger {
+  debug(message: string, context?: LogContext): void;
+  info(message: string, context?: LogContext): void;
+  warn(message: string, context?: LogContext): void;
+  error(message: string, error?: Error, context?: LogContext): void;
+  fatal(message: string, error?: Error, context?: LogContext): void;
+  child(context: LogContext): ILogger;
+  flush(): Promise<void>;
+}