fix: reset conclusion map on mobile

.superpowers/sdd/task-2-report.md

@@ -124,3 +124,51 @@ $ tsc -b --pretty false
 git diff --check
 passed
 ```
+
+## Final Responsive Fix
+
+### RED
+
+Command:
+
+```text
+pnpm --dir web --filter @lda/console test -- src/presentation/presentation-css.test.ts
+```
+
+Result:
+
+```text
+Test Files  1 failed (1)
+Tests       1 failed, 4 passed (5)
+```
+
+The failure was the missing 640px explicit placement reset and stale generic connector selector.
+
+### GREEN
+
+Command:
+
+```text
+pnpm --dir web --filter @lda/console test -- src/presentation/presentation-css.test.ts
+```
+
+Result:
+
+```text
+Test Files  1 passed (1)
+Tests       5 passed (5)
+```
+
+### Final Verification
+
+```text
+pnpm --dir web --filter @lda/console test -- src/presentation/conclusion/conclusion-model.test.ts src/presentation/conclusion/ConclusionScene.test.tsx
+Test Files  2 passed (2)
+Tests       12 passed (12)
+
+pnpm --dir web --filter @lda/console typecheck
+$ tsc -b --pretty false
+
+git diff --check
+passed
+```

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

@@ -34,4 +34,11 @@ describe("presentation.css", () => {
     expect(css).toMatch(/\.conclusion-map__future svg\s*\{[^}]*color: var\(--text-secondary\);/s);
     expect(css).not.toMatch(/\.conclusion-map__future svg\s*\{[^}]*color: var\(--accent-cyan\);/s);
   });
+
+  it("resets conclusion node placement and keeps connectors node-specific on narrow screens", () => {
+    expect(css).toMatch(
+      /@media \(max-width: 640px\) \{[\s\S]*?\.conclusion-map__node--planner,\s*\.conclusion-map__node--substrate,\s*\.conclusion-map__node--runtime,\s*\.conclusion-map__node--evidence\s*\{\s*grid-column: auto;\s*grid-row: auto;/,
+    );
+    expect(css).not.toContain(".conclusion-map__node:not(:last-child)::after");
+  });
 });

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

@@ -392,7 +392,16 @@
 
 @media (max-width: 640px) {
   .conclusion-map__flow { grid-template-columns: 1fr; gap: 0.85rem; }
-  .conclusion-map__node:not(:last-child)::after {
+  .conclusion-map__node--planner,
+  .conclusion-map__node--substrate,
+  .conclusion-map__node--runtime,
+  .conclusion-map__node--evidence {
+    grid-column: auto;
+    grid-row: auto;
+  }
+
+  .conclusion-map__node--planner::after,
+  .conclusion-map__node--substrate::after {
     top: auto;
     right: 50%;
     bottom: -0.85rem;