Fix correlation over-merge, thin-call hallucination, and geocoding accuracy

- Cap unit-continuity path at 20 min idle (unit_continuity_max_idle_minutes)
- Block time_fallback and unit-continuity matching on reassignment calls
- Expand reassignment detection to cover unit-initiated self-reassignment
- Skip GPT extraction entirely for transcripts ≤5 words (prevents hallucinated tags/units)
- Reduce geocode_max_km from 75 to 40 to reject far-out-of-area results
- Include county in geocoding query for tighter jurisdiction anchoring

drb-c2-core/app/routers/upload.py

@@ -112,7 +112,8 @@ async def _run_extraction_pipeline(
         all_tags.extend(scene["tags"])
         # When dispatch is pulling a unit to a NEW call (reassignment), suppress unit
         # overlap so the new scene doesn't chain into the unit's previous incident.
-        corr_units = [] if scene.get("reassignment") else scene.get("units")
+        is_reassignment = bool(scene.get("reassignment"))
+        corr_units = [] if is_reassignment else scene.get("units")
         incident_id = await incident_correlator.correlate_call(
             call_id=call_id,
             node_id=node_id,
@@ -126,6 +127,7 @@ async def _run_extraction_pipeline(
             units=corr_units,
             vehicles=scene.get("vehicles"),
             cleared_units=scene.get("cleared_units"),
+            reassignment=is_reassignment,
         )
         if incident_id and incident_id not in incident_ids:
             incident_ids.append(incident_id)
@@ -213,7 +215,8 @@ async def _run_intelligence_pipeline(
     if flags["correlation_enabled"]:
         for scene in scenes:
             all_tags.extend(scene["tags"])
-            corr_units = [] if scene.get("reassignment") else scene.get("units")
+            is_reassignment = bool(scene.get("reassignment"))
+            corr_units = [] if is_reassignment else scene.get("units")
             incident_id = await incident_correlator.correlate_call(
                 call_id=call_id,
                 node_id=node_id,
@@ -227,6 +230,7 @@ async def _run_intelligence_pipeline(
                 units=corr_units,
                 vehicles=scene.get("vehicles"),
                 cleared_units=scene.get("cleared_units"),
+                reassignment=is_reassignment,
             )
             if incident_id and incident_id not in incident_ids:
                 incident_ids.append(incident_id)