feat(lsp): add logger package with pino integration

[amondnet]

Summary

Create a shared logger package for consistent logging across the monorepo.

Motivation

• Structured logging needed for debugging MCP communication
• Consistent log format across packages (code, dora, lsp, format)
• Performance-critical for MCP server

Implementation

Package: packages/logger

• Create new @pleaseai/logger package
• Integrate pino as the logging library
• Add pino-pretty for development mode
• Configure structured JSON output for production
• Export typed logger factory

Features

• Log levels: trace, debug, info, warn, error, fatal
• Child loggers with context (e.g., logger.child({ tool: "findSymbol" }))
• Environment-based configuration (LOG_LEVEL env var)
• Pretty printing in development, JSON in production
• Redaction of sensitive fields

Integration

• Integrate with @pleaseai/dora (MCP server)
• Integrate with @pleaseai/code (CLI)
• Integrate with @pleaseai/code-lsp (LSP client)

API Design

import { createLogger } from "@pleaseai/logger"

const logger = createLogger("dora")
logger.info({ tool, query }, "MCP request received")
logger.error({ err }, "Request failed")

// Child logger with context
const toolLogger = logger.child({ tool: "findSymbol" })
toolLogger.debug({ query }, "Searching symbols")

Why pino?

• Fastest Node.js logger
• Small bundle size (~8KB)
• Excellent Bun support
• Native structured logging
• Strong TypeScript support