diff --git a/drb-c2-core/app/config.py b/drb-c2-core/app/config.py
index 922576d..265fa63 100644
--- a/drb-c2-core/app/config.py
+++ b/drb-c2-core/app/config.py
@@ -17,8 +17,9 @@ class Settings(BaseSettings):
     # Node health
     node_offline_threshold: int = 90  # seconds without checkin before marking offline
 
-    # OpenAI (Whisper STT)
+    # OpenAI (STT + intelligence)
     openai_api_key: Optional[str] = None
+    stt_model: str = "gpt-4o-transcribe"  # whisper-1 | gpt-4o-mini-transcribe | gpt-4o-transcribe
 
     # Gemini (intelligence extraction, embeddings, incident summaries)
     gemini_api_key: Optional[str] = None
@@ -31,6 +32,7 @@ class Settings(BaseSettings):
     incident_auto_resolve_minutes: int = 90   # auto-resolve after N minutes with no new calls
     recorrelation_scan_minutes: int = 60      # re-examine orphaned calls ended within this window
     tg_fast_path_idle_minutes: int = 90       # fast path: max minutes since incident last updated
+    tg_dispatch_thin_idle_minutes: int = 10   # dispatch channels only: thin calls only attach to incidents idle < this many minutes
 
     # Vocabulary learning
     vocabulary_induction_interval_hours: int = 24   # how often the induction loop runs
diff --git a/drb-c2-core/app/internal/incident_correlator.py b/drb-c2-core/app/internal/incident_correlator.py
index 249e60c..c873129 100644
--- a/drb-c2-core/app/internal/incident_correlator.py
+++ b/drb-c2-core/app/internal/incident_correlator.py
@@ -249,16 +249,33 @@ async def correlate_call(
 
         if tg_recent and is_thin_call:
             # Status/ack call — no scene data to reason about.
-            # Attach to whichever recent incident was most recently active on this TGID.
-            matched_incident = max(tg_recent, key=lambda inc: inc.get("updated_at", ""))
-            corr_debug = {
-                "corr_path": "fast/thin",
-                "corr_incident_idle_min": round(_incident_idle_minutes(matched_incident, now), 1),
-            }
-            logger.info(
-                f"Correlator fast-path (thin→last TGID incident): "
-                f"call {call_id} → {matched_incident['incident_id']}"
-            )
+            # On dispatch channels (shared backbone), apply a much tighter idle gate so
+            # a "10-4" or "Dispatch." doesn't re-activate an incident that's been quiet
+            # for an hour and then absorb the next unrelated dispatch on the same TGID.
+            if is_dispatch:
+                thin_pool = [
+                    inc for inc in tg_recent
+                    if _incident_idle_minutes(inc, now) <= settings.tg_dispatch_thin_idle_minutes
+                ]
+            else:
+                thin_pool = tg_recent
+
+            if not thin_pool:
+                logger.info(
+                    f"Correlator fast-path thin: dispatch channel idle > "
+                    f"{settings.tg_dispatch_thin_idle_minutes}min, skipping thin call {call_id}"
+                )
+            else:
+                # Attach to whichever pool incident was most recently active on this TGID.
+                matched_incident = max(thin_pool, key=lambda inc: inc.get("updated_at", ""))
+                corr_debug = {
+                    "corr_path": "fast/thin",
+                    "corr_incident_idle_min": round(_incident_idle_minutes(matched_incident, now), 1),
+                }
+                logger.info(
+                    f"Correlator fast-path (thin→last TGID incident): "
+                    f"call {call_id} → {matched_incident['incident_id']}"
+                )
         elif len(tg_recent) == 1:
             candidate = tg_recent[0]
             if _call_fits_incident(
diff --git a/drb-c2-core/app/internal/transcription.py b/drb-c2-core/app/internal/transcription.py
index 3dff828..c7a37d8 100644
--- a/drb-c2-core/app/internal/transcription.py
+++ b/drb-c2-core/app/internal/transcription.py
@@ -116,7 +116,7 @@ def _sync_transcribe(
         openai_client = OpenAI(api_key=settings.openai_api_key)
         with open(tmp_path, "rb") as f:
             response = openai_client.audio.transcriptions.create(
-                model="whisper-1",
+                model=settings.stt_model,
                 file=f,
                 language="en",
                 prompt=prompt,
diff --git a/drb-c2-core/app/internal/vocabulary_learner.py b/drb-c2-core/app/internal/vocabulary_learner.py
index 960f270..be120cb 100644
--- a/drb-c2-core/app/internal/vocabulary_learner.py
+++ b/drb-c2-core/app/internal/vocabulary_learner.py
@@ -18,7 +18,7 @@ import asyncio
 import difflib
 import json
 import random
-from datetime import datetime, timezone
+from datetime import datetime, timezone, timedelta
 from typing import Optional
 from app.internal.logger import logger
 from app.internal import firestore as fstore
diff --git a/drb-frontend/app/admin/page.tsx b/drb-frontend/app/admin/page.tsx
index bd85041..c05f65e 100644
--- a/drb-frontend/app/admin/page.tsx
+++ b/drb-frontend/app/admin/page.tsx
@@ -85,9 +85,29 @@ function CorrelationDebugTab() {
     }
   }
 
-  async function handleCopy() {
+  function handleCopy() {
     if (!data) return;
-    await navigator.clipboard.writeText(JSON.stringify(data, null, 2));
+    const text = JSON.stringify(data, null, 2);
+    if (navigator.clipboard) {
+      navigator.clipboard.writeText(text).then(() => {
+        setCopied(true);
+        setTimeout(() => setCopied(false), 2000);
+      }).catch(() => fallbackCopy(text));
+    } else {
+      fallbackCopy(text);
+    }
+  }
+
+  function fallbackCopy(text: string) {
+    const ta = document.createElement("textarea");
+    ta.value = text;
+    ta.style.position = "fixed";
+    ta.style.opacity = "0";
+    document.body.appendChild(ta);
+    ta.focus();
+    ta.select();
+    document.execCommand("copy");
+    document.body.removeChild(ta);
     setCopied(true);
     setTimeout(() => setCopied(false), 2000);
   }