feat: add search_assets MCP tool

[connor-savage]

Summary

Add search_assets MCP tool to Chip.

Generated by chip-factory pipeline.

[svc-snyk-github-jira]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues
✅	Licenses	0	0	0	0	0 issues
✅	Code Security	0	0	0	0	0 issues

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[connor-savage]

  Summary:                                                                                                                                                  - 6/6 steps passed in 6m25s, cost $0.77
  - factory open-pr worked — branch factory/search_assets pushed, PR opened against bot/main                                                               
  - The agent also found and fixed a real bug during MCP validation: Collibra returns status as a JSON object ({id, name}) but the client struct had    
  Status string. Fixed across 3 files.
  - All unit tests pass, full regression suite passes (16 packages)
  - 2 MCP validation calls confirmed correct behavior