ControlJobByID parses every selection with ParseIdentitySelection before
any store access (first rejection: 400, nothing dispatched), collects
the jobs to act on de-duplicated by unique_job_id plus one not-found
result per missing number per selection (carrying the would-be element
ID), validates each job once after the loop and dispatches each
accepted job once. foundJob gains an explicit-index flag so
<array-id>[0] matches only element 0 and never falls back to the whole
array or an ordinary job. Fixes bug-1899 (earlier selections were
re-dispatched for every later one).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>