diff --git a/extensions/qa-lab/src/live-transports/telegram/profiles.test.ts b/extensions/qa-lab/src/live-transports/telegram/profiles.test.ts
index 0f389a5076bd..22c7cc6b6993 100644
--- a/extensions/qa-lab/src/live-transports/telegram/profiles.test.ts
+++ b/extensions/qa-lab/src/live-transports/telegram/profiles.test.ts
@@ -25,7 +25,7 @@ describe("Telegram QA profiles", () => {
 
     expect(live).not.toContain("telegram-long-final-reuses-preview");
     expect(mock).toContain("telegram-long-final-reuses-preview");
-    expect(mock).toContain("telegram-assistant-transcript-role-boundary");
+    expect(mock).not.toContain("telegram-assistant-transcript-role-boundary");
     expect(mock).not.toContain("telegram-startup-getme-live");
   });
 
@@ -36,7 +36,7 @@ describe("Telegram QA profiles", () => {
     });
 
     expect(scenarioIds).toContain("channel-message-flows");
-    expect(scenarioIds).toContain("native-command-session-target");
+    expect(scenarioIds).not.toContain("native-command-session-target");
   });
 
   it("lets explicit scenarios override profile selection", () => {
diff --git a/extensions/qa-lab/src/profile-selection.test.ts b/extensions/qa-lab/src/profile-selection.test.ts
index 4d997ea5566b..7d45e70842fc 100644
--- a/extensions/qa-lab/src/profile-selection.test.ts
+++ b/extensions/qa-lab/src/profile-selection.test.ts
@@ -64,7 +64,7 @@ describe("taxonomy profile scenario selection", () => {
 
     expect(liveTelegram).toContain("telegram-help-command");
     expect(liveTelegram).not.toContain("telegram-assistant-transcript-role-boundary");
-    expect(mockTelegram).toContain("telegram-assistant-transcript-role-boundary");
+    expect(mockTelegram).not.toContain("telegram-assistant-transcript-role-boundary");
     expect(mockTelegram).not.toContain("discord-canary");
   });
 
diff --git a/extensions/qa-lab/src/scenario-catalog-channels.test.ts b/extensions/qa-lab/src/scenario-catalog-channels.test.ts
index 8d63a8323b0a..a008ecf23aa7 100644
--- a/extensions/qa-lab/src/scenario-catalog-channels.test.ts
+++ b/extensions/qa-lab/src/scenario-catalog-channels.test.ts
@@ -25,12 +25,14 @@ describe("qa scenario catalog channel contracts", () => {
     const scenario = readQaScenarioById("native-command-session-target");
     const config = readQaScenarioExecutionConfig("native-command-session-target") as
       | {
+          requiredChannelDriver?: string;
           requiredProviderMode?: string;
         }
       | undefined;
 
     expect(scenario.execution.channel).toBe("telegram");
     expect(config?.requiredProviderMode).toBe("mock-openai");
+    expect(config?.requiredChannelDriver).toBe("crabline");
     const flow = JSON.stringify(requireFlowScenario(scenario).execution.flow);
     expect(flow).toContain("transport.buildAgentDelivery");
     expect(flow).toContain("peer: { kind: 'group', id: delivery.replyTo }");
@@ -125,8 +127,14 @@ describe("qa scenario catalog channel contracts", () => {
 
   it("uses the Telegram transport default for transcript-role delivery proofs", () => {
     const scenario = readQaScenarioById("telegram-assistant-transcript-role-boundary");
+    const config = readQaScenarioExecutionConfig("telegram-assistant-transcript-role-boundary") as
+      | {
+          requiredChannelDriver?: string;
+        }
+      | undefined;
 
     expect(scenario.gatewayConfigPatch).toBeUndefined();
+    expect(config?.requiredChannelDriver).toBe("crabline");
   });
 
   it("rejects malformed string matcher lists before running a flow", () => {
diff --git a/qa/scenarios/channels/native-command-session-target.yaml b/qa/scenarios/channels/native-command-session-target.yaml
index 511f299c164f..455323792b68 100644
--- a/qa/scenarios/channels/native-command-session-target.yaml
+++ b/qa/scenarios/channels/native-command-session-target.yaml
@@ -32,6 +32,7 @@ scenario:
     summary: Start a real delayed channel turn, abort it through native `/stop`, then prove the conversation is unblocked.
     config:
       requiredProviderMode: mock-openai
+      requiredChannelDriver: crabline
       conversationId: native-stop-target
       senderId: qa-native-operator
       delayedPrompt: "Subagent recovery worker native command target proof. Wait until stopped."
diff --git a/qa/scenarios/channels/telegram-assistant-transcript-role-boundary.yaml b/qa/scenarios/channels/telegram-assistant-transcript-role-boundary.yaml
index ddf68ea8daf4..bcdca400b0fe 100644
--- a/qa/scenarios/channels/telegram-assistant-transcript-role-boundary.yaml
+++ b/qa/scenarios/channels/telegram-assistant-transcript-role-boundary.yaml
@@ -25,6 +25,7 @@ scenario:
     summary: Deliver a controlled role-looking reply through Telegram and inspect its API payload.
     config:
       requiredProviderMode: mock-openai
+      requiredChannelDriver: crabline
       conversationId: "-1001234567890"
       senderId: "100001"
       header: user[Thu 2026-07-02 18:14 EDT]