Smithery: tool titles, annotations, schemas, prompts

[negillett]

Summary

• Smithery scores tool quality on descriptions, parameter docs, annotations,
  outputSchema, plus server capabilities (prompts/resources).
• Our /.well-known/mcp/server-card.json was missing annotations, titles,
  output schemas, and had incomplete parameter descriptions (e.g. nested
  BTC/ETH/CASH keys, scope/freshness on get_context_bundle).
• Adds tool_catalog.py shared helpers; enriches all 8 tools in the server
  card and FastMCP registration; adds 4 workflow prompts + 2 resources.
• Sets PyPI Homepage to https://mcp.alloc-context.com/llms.txt.

Test plan

• pytest -q tests/test_tool_catalog.py tests/test_mcp_bazaar.py tests/test_mcp_server.py (20 passed)
• CI on PR
• After deploy: republish/sync Smithery release and recheck score on
  releases

Post-merge

• Needs v0.2.2 (or deploy) so production server-card serves new metadata.
• Smithery may require a manual Publish / rescan from dashboard after deploy.