feat(server): migrate all logging to pino

- Add pino with pino-pretty for structured logging
- Create root logger in index.ts with child loggers per module
- Support log level via PASEO_LOG env var and config.json
- Support log format (pretty/json) via PASEO_LOG_FORMAT and config.json
- Replace all console.* in runtime code with appropriate log levels
- Scripts use process.stdout/stderr for output
- Error logging uses correct pattern: logger.error({ err }, msg)

packages/server/src/poc-commands/commands-poc.test.ts

@@ -53,15 +53,6 @@ describe("Claude Agent SDK Commands POC", () => {
         // Should be an array
         expect(Array.isArray(commands)).toBe(true);
 
-        // Log what we found
-        console.log(`[Test] Found ${commands.length} commands:`);
-        commands.slice(0, 10).forEach((cmd) => {
-          console.log(`  - /${cmd.name}: ${cmd.description} [${cmd.argumentHint}]`);
-        });
-        if (commands.length > 10) {
-          console.log(`  ... and ${commands.length - 10} more`);
-        }
-
         // Verify structure
         if (commands.length > 0) {
           const firstCommand = commands[0];