framing-lint: places-no-image (require image carousels on place cards)

packages/viewer/src/flow-geometry.ts

@@ -65,6 +65,7 @@ export interface Finding {
     // Framing codes (framing-lint.ts): does the board tell a first-time reader WHAT it is and HOW to use it?
     | "framing-no-title" | "framing-no-lede" | "framing-interactive-unexplained"
     | "framing-data-no-legend" | "framing-skeletal"
+  | "places-no-image"
     // Density codes (element-density.ts): UI cells rendered below the readable-width floor.
     | "narrow-nested-grid" | "narrow-table-cols" | "narrow-standalone-grid";
   message: string;

packages/viewer/src/framing-lint.ts

@@ -189,6 +189,63 @@ function isPlaceholderTitle(t: string): boolean {
   return PLACEHOLDER_TITLES.has(t.trim().toLowerCase());
 }
 
+/** True if a subtree contains a rendered image component with real content —
+ *  an ImageCarousel with a non-empty `images` array, or an Image with a `src`.
+ *  Bounded (shares MAX_TEXT_NODES cap) so a huge item.node can't stall the lint. */
+function subtreeHasImage(node: unknown, cap = { n: 0 }): boolean {
+  if (cap.n > MAX_TEXT_NODES) return false;
+  cap.n++;
+  if (!node || typeof node !== "object") return false;
+  const n = node as { type?: unknown; props?: Record<string, unknown>; children?: unknown };
+  if (n.type === "ImageCarousel") {
+    const imgs = (n.props as { images?: unknown } | undefined)?.images;
+    if (Array.isArray(imgs) && imgs.length > 0) return true;
+  }
+  if (n.type === "Image") {
+    const src = (n.props as { src?: unknown } | undefined)?.src;
+    if (typeof src === "string" && src.trim()) return true;
+  }
+  const ch = n.children;
+  if (Array.isArray(ch)) { for (const c of ch) if (subtreeHasImage(c, cap)) return true; }
+  else if (ch && typeof ch === "object") { if (subtreeHasImage(ch, cap)) return true; }
+  return false;
+}
+
+/** A PlacesExplorer item "has an image" if it carries an item-level `img` (map-pin thumbnail),
+ *  a non-empty `images` array, or its detail `node` renders an ImageCarousel/Image. */
+function placesItemHasImage(item: unknown): boolean {
+  if (!item || typeof item !== "object") return false;
+  const it = item as { img?: unknown; images?: unknown; node?: unknown };
+  if (typeof it.img === "string" && it.img.trim()) return true;
+  if (Array.isArray(it.images) && it.images.length > 0) return true;
+  if (it.node && subtreeHasImage(it.node)) return true;
+  return false;
+}
+
+/** Walk the tree; for every PlacesExplorer with items, report how many lack a photo.
+ *  Correct-by-construction guard: place cards are expected to carry image carousels. */
+function placesImageGaps(node: unknown, out: { group: string; missing: number; total: number }[] = [], cap = { n: 0 }): { group: string; missing: number; total: number }[] {
+  if (cap.n > MAX_TEXT_NODES) return out;
+  cap.n++;
+  if (!node || typeof node !== "object") return out;
+  const n = node as { type?: unknown; props?: Record<string, unknown>; children?: unknown };
+  if (n.type === "PlacesExplorer") {
+    const items = Array.isArray((n.props as { items?: unknown } | undefined)?.items)
+      ? ((n.props as { items: unknown[] }).items) : [];
+    if (items.length > 0) {
+      const missing = items.filter((it) => !placesItemHasImage(it)).length;
+      const group = typeof (n.props as { group?: unknown } | undefined)?.group === "string"
+        ? (n.props as { group: string }).group
+        : (typeof (n.props as { id?: unknown } | undefined)?.id === "string" ? (n.props as { id: string }).id : "?");
+      out.push({ group, missing, total: items.length });
+    }
+  }
+  const ch = n.children;
+  if (Array.isArray(ch)) for (const c of ch) placesImageGaps(c, out, cap);
+  else if (ch && typeof ch === "object") placesImageGaps(ch, out, cap);
+  return out;
+}
+
 /** Deterministic framing lint. Same {warnings, findings} shape as geometryReport() so
  *  the push handler can concatenate them and x-termchart-strict gates uniformly. */
 export function framingReport(type: string, content: string): { warnings: string[]; findings: Finding[] } {
@@ -253,6 +310,19 @@ export function framingReport(type: string, content: string): { warnings: string
     const allTypes = collectTypes(root);
     for (const t of allTypes) if (INTERACTIVE_TYPES.has(t)) interactiveTypes.add(t);
     for (const t of allTypes) if (ENCODED_DATA_TYPES.has(t)) { hasEncodedData = true; break; }
+    // Rule 6 (correct-by-construction): PlacesExplorer place cards must carry an image
+    // (ImageCarousel / Image / item.img). Text-only place cards read as unfinished; the
+    // expectation is a photo per card. Non-blocking warning (same as other framing rules).
+    for (const gap of placesImageGaps(root)) {
+      if (gap.missing > 0) {
+        findings.push({
+          severity: "warning", code: "places-no-image", count: gap.missing,
+          message: `PlacesExplorer "${gap.group}": ${gap.missing}/${gap.total} place card(s) have no photo. ` +
+            `Every place card should carry an ImageCarousel (fetch Google Places photos and add ` +
+            `{type:"ImageCarousel",props:{images:[{src,alt},…]}} as the card's first child, and set item.img for the map pin).`,
+        });
+      }
+    }
     allText = textOf(root);
     nodeCount = totalNodeCount(root);
     // BoardHeader's structured legend/howToUse satisfy the interactive-hint and legend rules —

packages/viewer/test/framing-lint.test.ts

@@ -325,3 +325,34 @@ describe("framingReport — {warnings, findings} shape", () => {
     expect(bad.warnings[0]).toMatch(/^framing:/);
   });
 });
+
+describe("framingReport — PlacesExplorer image carousels (places-no-image)", () => {
+  const item = (id: string, withImg: boolean) => ({
+    id, meta: { name: id }, lat: 33, lng: 130, label: id,
+    node: { type: "Card", children: [
+      ...(withImg ? [{ type: "ImageCarousel", props: { images: [{ src: "https://x/p.jpg", alt: id }] } }] : []),
+      { type: "Text", children: id },
+    ] },
+  });
+  const board = (items: unknown[]) => j({
+    type: "Stack", children: [
+      { type: "Title", children: "Yanagawa shops" },
+      { type: "Text", children: lede20 + " Tap a pin for photos, details and a map link." },
+      { type: "PlacesExplorer", props: { group: "yshop", items } },
+    ],
+  });
+  it("flags place cards missing an image carousel", () => {
+    const r = framingReport("component", board([item("a", true), item("b", false), item("c", false)]));
+    const f = r.findings.find((x) => x.code === "places-no-image");
+    expect(f).toBeTruthy();
+    expect(f!.count).toBe(2);
+  });
+  it("passes when every place card has an image (carousel or item.img)", () => {
+    const items = [
+      item("a", true),
+      { id: "b", meta: { name: "b" }, img: "https://x/pin.jpg", node: { type: "Card", children: [{ type: "Text", children: "b" }] } },
+    ];
+    const r = framingReport("component", board(items));
+    expect(r.findings.map((f) => f.code)).not.toContain("places-no-image");
+  });
+});