feat(logger): add shared logger package with pino integration

[amondnet]

Summary

Adds a new @pleaseai/logger package with pino integration for consistent, structured logging across the monorepo.

Changes

• New package: @pleaseai/logger with pino wrapper

  • Structured logging with child loggers
  • Environment-based configuration (LOG_LEVEL env var)
  • Auto-detect pretty printing via NODE_ENV
  • Sensitive field redaction (password, token, apiKey, etc.)
  • Logs to stderr to avoid interfering with protocol output

• Package integrations:

  • @pleaseai/code: Fatal error logging
  • @pleaseai/code-format: Format initialization and operations
  • @pleaseai/code-lsp: LSP server lifecycle, diagnostics, spawn operations
  • @pleaseai/dora: MCP server, port discovery, ast-grep provider

API

import { createLogger, logger, type Logger, type LogLevel } from '@pleaseai/logger'

// Create named child logger
const log = createLogger('my-component')

// Structured logging
log.info({ userId: 123 }, 'User logged in')
log.error({ err }, 'Operation failed')

Test plan

• Logger package tests pass (7 tests)
• All package typechecks pass
• All package tests pass
• Verified structured output in development mode
• Verified JSON output in production mode

Closes #36

[codecov]

Codecov Report

❌ Patch coverage is 46.85714% with 93 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.13%. Comparing base (74117d3) to head (a269ec7).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/lsp/src/server.ts	7.57%	61 Missing ⚠️
packages/logger/src/index.ts	81.69%	13 Missing ⚠️
packages/dora/src/providers/ast-grep/downloader.ts	22.22%	7 Missing ⚠️
packages/format/src/index.ts	22.22%	7 Missing ⚠️
packages/lsp/src/index.ts	62.50%	3 Missing ⚠️
packages/dora/src/providers/ast-grep/cli.ts	66.66%	1 Missing ⚠️
packages/format/src/config/loader.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #37      +/-   ##
==========================================
+ Coverage   49.37%   50.13%   +0.76%     
==========================================
  Files          21       22       +1     
  Lines        4324     4392      +68     
==========================================
+ Hits         2135     2202      +67     
- Misses       2189     2190       +1     

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