fix: correct MCP link text and prevent evidence reopening on Escape

- DiscussionPanel: relabel MCP link to 'Anthropic MCP' for accuracy
- close_overlay now sets evidenceModeOverride to 'hidden' instead of
  clearing it, preventing beat-default evidence from reopening on
  repeated Escape; only 'reset overrides' clears it
- Add regression test for repeated Escape after force-close
- Update existing overlay-priority tests for new 'hidden' semantics

web/apps/console/src/presentation/DiscussionPanel.tsx

@@ -28,7 +28,7 @@ export const DiscussionPanel = ({ branchId, onClose }: DiscussionPanelProps) =>
       )}
       {branchId === "mcp-agent-scale" && (
         <p className="discussion-panel__detail">
-          <a href="https://modelcontextprotocol.io/" target="_blank" rel="noopener noreferrer">Model Context Protocol</a> ·{" "}
+          <a href="https://modelcontextprotocol.io/" target="_blank" rel="noopener noreferrer">Anthropic MCP</a> ·{" "}
           <a href="https://developers.cloudflare.com/workers-ai/configuration/code-mode/" target="_blank" rel="noopener noreferrer">Cloudflare Code Mode</a>
           {" "}— both are external context.
         </p>

web/apps/console/src/presentation/presentation-state.test.ts

@@ -92,7 +92,7 @@ describe("presentationReducer", () => {
     expect(closed1.location.kind).toBe("discussion");
 
     const closed2 = presentationReducer(closed1, { type: "close_overlay" });
-    expect(closed2.evidenceModeOverride).toBeNull();
+    expect(closed2.evidenceModeOverride).toBe("hidden");
 
     const closed3 = presentationReducer(closed2, { type: "close_overlay" });
     expect(closed3.location.kind).toBe("main");
@@ -129,7 +129,22 @@ describe("presentationReducer", () => {
       mode: "open",
     });
     const closed = presentationReducer(opened, { type: "close_overlay" });
-    expect(closed.evidenceModeOverride).toBeNull();
+    expect(closed.evidenceModeOverride).toBe("hidden");
     expect(closed.location).toEqual(initialPresentationState.location);
   });
+
+  it("does not reopen evidence on repeated Escape after force-close", () => {
+    const stateAtTrace = presentationReducer(initialPresentationState, {
+      type: "jump",
+      location: { kind: "main", sceneId: "interrupt-evidence", beatId: "trace" },
+    });
+    expect(stateAtTrace.evidenceModeOverride).toBeNull();
+
+    const closed = presentationReducer(stateAtTrace, { type: "close_overlay" });
+    expect(closed.evidenceModeOverride).toBe("hidden");
+
+    const secondEscape = presentationReducer(closed, { type: "close_overlay" });
+    expect(secondEscape.evidenceModeOverride).toBe("hidden");
+    expect(secondEscape.location.kind).toBe("main");
+  });
 });

web/apps/console/src/presentation/presentation-state.ts

@@ -180,14 +180,14 @@ export const presentationReducer = (
       return { ...state, evidenceModeOverride: action.mode };
     case "close_overlay": {
       if (state.selectedNodeId !== null) return { ...state, selectedNodeId: null };
-      if (state.evidenceModeOverride !== null) return { ...state, evidenceModeOverride: null };
-      const derivedEvidenceMode = (() => {
-        if (state.location.kind === "discussion") return "hidden" as const;
+      const isEvidenceVisible = (() => {
+        if (state.evidenceModeOverride !== null) return state.evidenceModeOverride !== "hidden";
+        if (state.location.kind === "discussion") return false;
         const scene = findScene(state.location.sceneId);
         const beat = scene?.beats.find((b) => b.id === (state.location as MainLocation).beatId);
-        return beat?.evidenceMode ?? "hidden";
+        return beat?.evidenceMode === "open" || beat?.evidenceMode === "peek";
       })();
-      if (derivedEvidenceMode !== "hidden") return { ...state, evidenceModeOverride: "hidden" };
+      if (isEvidenceVisible) return { ...state, evidenceModeOverride: "hidden" };
       if (state.discussionIndexOpen) return { ...state, discussionIndexOpen: false };
       if (state.controlsOpen) return { ...state, controlsOpen: false };
       if (state.location.kind === "discussion") {