feat: Add/enhance tool annotations for improved LLM tool understanding

[bryankthompson]

Summary

Adds complete MCP tool annotations to all 8 tools to help LLMs better understand tool behavior and enable clients to make safer decisions about tool execution.

Changes

New annotations added (5 tools):

• company_research_exa: Company Research
• crawling_exa: Web Crawling
• linkedin_search_exa: LinkedIn Search
• deep_researcher_start: Start Deep Research
• deep_researcher_check: Check Deep Research Status

Enhanced annotations (3 tools):

Added title and openWorldHint to existing annotations:

• web_search_exa: Web Search
• deep_search_exa: Deep Search
• get_code_context_exa: Code Context Search

Annotation details for all tools:

Tool	Title	readOnlyHint	openWorldHint	idempotentHint
web_search_exa	Web Search	true	true	true
deep_search_exa	Deep Search	true	true	true
get_code_context_exa	Code Context Search	true	true	true
company_research_exa	Company Research	true	true	true
crawling_exa	Web Crawling	true	true	true
linkedin_search_exa	LinkedIn Search	true	true	true
deep_researcher_start	Start Deep Research	true	true	false
deep_researcher_check	Check Deep Research Status	true	true	true

Why This Matters

• Safety: Clients can auto-approve read-only operations without user confirmation
• External API awareness: openWorldHint: true indicates tools access external systems
• UI improvements: title provides human-readable names for display
• Idempotency: Helps clients understand retry behavior (all idempotent except deep_researcher_start)

Testing

• Build passes (npm run build)
• All 8 tools have complete annotations
• Annotations visible in bundled output

🤖 Generated with Claude Code

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