Framework-specific agent integration examples + an HTTP contract compatibility test around the stable /v1/kb/q

[sarthakagrawal927]

Work

5. Framework-specific agent integration examples + an HTTP contract
   compatibility test around the stable /v1/kb/query contract.

Context

Migrated from STATUS.md on 2026-07-29 when Fleet made GitHub Issues the sole operational work queue.

This issue is the to-do. Link the implementing pull request with Closes #<issue>; the linked pull request makes the work in progress, and merge + issue closure makes it done.