feat: add neutral architecture overview beat

web/apps/console/src/presentation/PresentationRoute.test.tsx

@@ -75,6 +75,7 @@ afterEach(() => {
 describe("PresentationRoute", () => {
   const directHashRoutes = [
     { hash: "#scene/thesis/title", heading: "Design and Implementation of lda.chat", hasDemoChrome: false },
+    { hash: "#scene/architecture/overview", heading: "Architecture Zoom", hasDemoChrome: false },
     { hash: "#scene/architecture/client", heading: "Architecture Zoom", hasDemoChrome: false },
     { hash: "#scene/authoring/diagnose", heading: "Author, Validate, Repair", hasDemoChrome: false },
     {

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

@@ -148,6 +148,7 @@ const beatContracts = {
   "thesis/substrate": { mode: "split", primarySurface: "opening-decomposition", supportSurface: "none" },
   "problem/direct-actions": { mode: "split", primarySurface: "tool-loop-transcript", supportSurface: "workflow-blueprint" },
   "problem/missing-contracts": { mode: "split", primarySurface: "workflow-blueprint", supportSurface: "tool-loop-transcript" },
+  "architecture/overview": { mode: "focal", primarySurface: "interactive-architecture", supportSurface: "none" },
   "architecture/client": { mode: "zoom", primarySurface: "interactive-architecture", supportSurface: "none" },
   "architecture/api": { mode: "zoom", primarySurface: "interactive-architecture", supportSurface: "none" },
   "architecture/runtime": { mode: "zoom", primarySurface: "interactive-architecture", supportSurface: "none" },

web/apps/console/src/presentation/presentation.css

@@ -368,7 +368,7 @@
 
 .architecture-scene .interactive-figure:has(.figure-node[data-active="true"])
   .figure-node:not([data-active="true"]) {
-  opacity: 0.48;
+  opacity: 0.76;
 }
 
 .architecture-scene .figure-node[data-active="true"] {

web/apps/console/src/presentation/presenter/PresenterRoute.test.tsx

@@ -15,7 +15,7 @@ describe("PresenterRoute", () => {
     expect(screen.getByRole("main", { name: /lda.chat presenter notes/i })).toBeInTheDocument();
     expect(screen.getByText(/This project began with the goal/i)).toBeInTheDocument();
     expect(screen.getByText("the system underneath the chat").tagName).toBe("STRONG");
-    expect(screen.getByRole("navigation", { name: /presenter note navigation/i })).toHaveTextContent("1 / 42");
+    expect(screen.getByRole("navigation", { name: /presenter note navigation/i })).toHaveTextContent("1 / 43");
     expect(screen.getByRole("link", { name: "Next →" })).toHaveAttribute("href", "#scene/thesis/substrate");
     expect(screen.getByRole("link", { name: /open audience slide/i })).toHaveAttribute("href", "/present#scene/thesis/title");
     expect(screen.queryByText(/live target/i)).not.toBeInTheDocument();

web/apps/console/src/presentation/presenter/presenter-notes.ts

@@ -154,34 +154,41 @@ export const presenterNotes = [
     ["Thesis Workflow Lifecycle"],
     { qnaBranchIds: ["lifecycle-states", "run-persistence"] },
   ),
+  beatNote(
+    "architecture",
+    "overview",
+    7,
+    "First, the **implemented architecture spine** and its ownership boundaries.",
+    ["Thesis System Architecture", "docs/project_map.md"],
+  ),
   beatNote(
     "architecture",
     "client",
-    13,
-    "Human operators and external agents enter through **the same public lifecycle surface**.",
+    10,
+    "Humans and agents share **one public lifecycle surface**.",
     ["Thesis System Architecture", "docs/project_map.md"],
   ),
   beatNote(
     "architecture",
     "api",
-    13,
-    "**WorkflowApi owns lifecycle operations**; JSON-RPC adapts requests without owning domain behavior.",
+    11,
+    "WorkflowApi owns lifecycle operations; **JSON-RPC only adapts transport**.",
     ["Thesis System Architecture", "docs/source_architecture.md"],
     { qnaBranchIds: ["not-just-cli"] },
   ),
   beatNote(
     "architecture",
     "runtime",
-    14,
-    "**WorkflowServer composes records, provider-neutral capabilities, WorkflowApi, and the execution kernel**; provider behavior remains outside the core.",
+    13,
+    "WorkflowServer composes **records, capabilities, API, and kernel**; providers remain outside the core.",
     ["Thesis System Architecture", "docs/source_architecture.md"],
     { qnaBranchIds: ["provider-security"] },
   ),
   beatNote(
     "architecture",
     "node-use",
-    15,
-    "A NodeUse resolves bindings, **invokes its NodeDef handler**, reduces output into state, appends a trace frame, and routes the outcome.",
+    14,
+    "NodeUse **invokes a NodeDef handler**, reduces state, records trace, and routes the declared outcome.",
     ["Thesis Workflow Core Model"],
   ),
   beatNote(

web/apps/console/src/presentation/scenes/ArchitectureScene.test.tsx

@@ -71,6 +71,17 @@ const renderArchitecture = (overrides: Partial<React.ComponentProps<typeof Archi
 afterEach(() => cleanup());
 
 describe("ArchitectureScene", () => {
+  it("keeps the overview beat neutral so the entire spine remains readable", () => {
+    renderArchitecture({
+      beat: { ...mockBeat, id: "overview" },
+      focusPath: [],
+      activeNodeId: null,
+    });
+
+    expect(screen.getByTestId("architecture-scene")).toHaveAttribute("data-architecture-beat", "overview");
+    expect(document.querySelector('.figure-node[data-active="true"]')).toBeNull();
+  });
+
   it("renders the architecture spine and expands the capability boundary", () => {
     const onFocusPathChange = vi.fn();
     renderArchitecture({ focusPath: [], onFocusPathChange });

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

@@ -132,6 +132,7 @@ export const mainScenes = defineScenes([
     evidencePointer: "Thesis System Architecture; docs/project_map.md; docs/source_architecture.md",
     view: "architecture",
     beats: [
+      sceneBeat("overview", "Architecture spine", "The implemented system separates its public surface, lifecycle records, provider boundary, and execution kernel.", { figure: { catalogId: "system-architecture", focusPath: [], activeNodeId: null } }),
       sceneBeat("client", "Client operations", "Human and agent clients use the same public lifecycle surface.", { figure: { catalogId: "system-architecture", focusPath: [], activeNodeId: "client-operations" } }),
       sceneBeat("api", "Transport and API", "JSON-RPC reaches WorkflowApi without owning domain behavior.", { figure: { catalogId: "system-architecture", focusPath: ["application-lifecycle"], activeNodeId: "workflow-api-boundary" } }),
       sceneBeat("runtime", "Runtime and providers", "The runtime resolves provider-neutral capabilities and stores lifecycle records.", { figure: { catalogId: "system-architecture", focusPath: ["runtime-providers"], activeNodeId: "configured-providers" } }),