fix: address review findings for defense compositor

- S1: Remove global html/body overflow:hidden; scope to .presentation-route
- S2+P1: Add CSS selectors for data-stage-theme, data-chat-theme, data-chat-mode
- S3: Add distinct visual treatments per SceneView type (positioning, boundary, lifecycle, architecture, authoring, evaluation)
- S4+P2: Move discussion index to reducer state; Escape closes all overlays; remove miswired button
- P3: Add 8 missing Q&A discussion branches across lifecycle, authoring, architecture, evaluation, workflow-demo
- P4: Force replay now restores replay evidence
- P5: Add scene progress display and scene reset to presenter controls
- P6: Fix default dock mode to use composition.chatMode
- P7: Wrap decodeURIComponent in try-catch for malformed hashes

web/apps/console/src/presentation/storyboard.test.ts

@@ -41,15 +41,21 @@ describe("defense storyboard catalog", () => {
     expect(findBeat("interrupt-evidence", "trace")?.chatMode).toBe("dock");
   });
 
-  it("defines the five positioning discussion branches", () => {
-    expect(discussionBranches.map((branch) => branch.id)).toEqual([
+  it("defines discussion branches across multiple scenes", () => {
+    expect(discussionBranches.length).toBeGreaterThanOrEqual(5);
+    const positioningBranches = discussionBranches.filter((b) => b.parentSceneId === "positioning");
+    expect(positioningBranches.map((b) => b.id)).toEqual([
       "direct-orchestration",
       "generated-scripts",
       "hosted-automation",
       "durable-agent-graphs",
       "mcp-agent-scale",
     ]);
-    expect(discussionBranches.every((branch) => branch.parentSceneId === "positioning")).toBe(true);
+    for (const branch of discussionBranches) {
+      expect(branch.title.length).toBeGreaterThan(0);
+      expect(branch.summary.length).toBeGreaterThan(0);
+      expect(branch.evidencePointer.length).toBeGreaterThan(0);
+    }
   });
 
   it("exposes a valid default location", () => {