First Adapter + Formatters (SearchAdapter)

[prosdev]

Description

Validate the adapter framework by implementing the SearchAdapter and token-efficient formatters. This proves the adapter pattern works and establishes best practices for token optimization.

Milestone: Adapter framework validated! First working MCP tool! ✅

Scope

• SearchAdapter (dev_search tool)
• CompactFormatter + VerboseFormatter
• Token estimation utilities
• Integration test with real MCP messages

Acceptance Criteria

• SearchAdapter implements ToolAdapter interface
• dev_search tool callable via MCP
• Compact format returns summaries only (default)
• Verbose format returns full details (opt-in)
• Token estimation within 20% accuracy
• Integration test with server + adapter
• >80% test coverage

Estimate: 2 days
Parent Epic: #26 (MCP Integration)
Depends on: #27