frank-primary: deploy health gate reads the body (FreeToken 200-loading)

FreeToken's /health returns 200 with {"status":"loading"} while the
engine loads — the FastAPI front end binds before the scheduler is up.
Measured 2026-10-06: the deploy gate went green after 6s while 131 shards
were still paging in (vLLM 503'd during load, which made the bare curl
honest there). The frank-primary gate now loops until status:ok; the
MainPID stray-port guard is unchanged.

scripts/deploy-remote.sh

@@ -1339,7 +1339,26 @@ deploy_llm_primary() {
     run_privileged systemctl restart frank-primary.service
     # Cold start: FP8 page-in plus torch compile/graph capture (~15 min cold,
     # measured 2026-09-29). Parity with every predecessor on this port.
-    wait_for_health frank-primary http://127.0.0.1:7770/health 1800 || return 1
+    # FreeToken's /health returns 200 with {"status":"loading"} while the
+    # engine loads (the FastAPI front end binds before the scheduler is
+    # up), so a bare 200 false-greens — measured 2026-10-06: "healthy after
+    # 6 s" while 131 shards were still paging in. vLLM 503'd during load,
+    # which made the bare curl honest there; FreeToken needs the BODY read.
+    # Only status:"ok" counts. (The MainPID check below still guards the
+    # stray-port case.)
+    local i ok=0
+    for ((i=1; i<=900; i++)); do
+        if curl -fsS http://127.0.0.1:7770/health 2>/dev/null | grep -q '"status":"ok"'; then
+            echo "frank-primary engine healthy after approximately $((i * 2))s"
+            ok=1
+            break
+        fi
+        sleep 2
+    done
+    if [[ "$ok" != 1 ]]; then
+        echo "FAIL: frank-primary never reached /health status ok in 1800s" >&2
+        return 1
+    fi
     # False-green hardening (the 2026-09-26 lesson): a bare curl against the
     # port cannot tell WHO answers — a stray probe holding :7770 satisfies
     # it while the unit is stopped. The deploy is only green if the unit