TASK-083: mark task Done in spec and milestone index

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Rkuh4aSmrD8m2f2vYqakb6

Author: etr

specs/tasks/M7-v2-cleanup/TASK-083.md

@@ -35,4 +35,4 @@ Land the gates that were asked for in TASK-052 and TASK-053, separate the bench_
 **Related Requirements:** PRD §3.6 performance acceptance, PRD-HOOK-REQ-008 (zero-cost when unused)
 **Related Decisions:** §4.5 routing, DR-012
 
-**Status:** Backlog
+**Status:** Done

specs/tasks/M7-v2-cleanup/_index.md

@@ -47,7 +47,7 @@ TASK-093).
 | TASK-080 | Tighten threadsafety_stress latency gate back from 100× to 10× | MED | M | Done |
 | TASK-081 | Fill empty-on-correct-build unit suites and re-enable pthread leak detector | MED | M | Done |
 | TASK-082 | Tighten static-size bounds in `http_resource_test` and `webserver_pimpl_test` | MED | S | Done |
-| TASK-083 | Wire real CI gates into benchmarks | MED | M | Backlog |
+| TASK-083 | Wire real CI gates into benchmarks | MED | M | Done |
 | TASK-084 | Re-measure libstdc++/Linux v1 baseline for `get_headers` ns/call | MED | S | Backlog |
 | TASK-085 | Residual test-smell sweep | MED | S | Backlog |
 | TASK-086 | Execute file-size split roadmap (FILE_LOC_MAX 750 → 500) | HIGH | L | Backlog |