refactor: split backend plans and remove Collector dependency - #749

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refactor/backend-plan-split

Commits on Sep 19, 2026

refactor: split installed maintenance DAGs from query execution
zzylol
committed
f6d9cb3
refactor: remove backend Collector dependency and normalize legacy DAGs
zzylol
committed
9713cbc
test: restore whole-backend process coverage without Collector
zzylol
committed
7ee09b6