docs: document object viewers and asset proxy

Add a /mod/:id/setup page that lays out every renderable object in a single shared scene. Export object-facing mesh wrappers from the viewers and share geometry and materials across objects via module-level caches.

README.md

@@ -7,10 +7,11 @@ analyze their contents. A lightweight, client-only pnpm monorepo.
 
 | Package             | Role                                                   | Runtime    |
 | ------------------- | ------------------------------------------------------ | ---------- |
-| `apps/web`          | React frontend: search + mod pages                     | Browser    |
+| `apps/web`          | React frontend: search + mod pages + 3D object viewers | Browser    |
-| `apps/proxy`        | Hono HTTP server: Workshop search + save fetch         | Node       |
+| `apps/proxy`        | Hono HTTP server: Workshop search, save fetch, tracing | Node       |
 | `packages/tts`      | Fetch save from Steam, BSON-parse to `TTSMod`          | Node       |
 | `packages/extract`  | Analyze a `TTSMod`: objects, asset refs, downloads     | Isomorphic |
+| `packages/mesh`     | 2D shapes + extrusion into 3D mesh geometry            | Isomorphic |
 | `packages/shared`   | Shared types + zod schemas                             | Isomorphic |
 
 See [`docs/architecture.md`](docs/architecture.md) for the architecture and
@@ -28,7 +29,7 @@ Get a Steam Web API key at https://steamcommunity.com/dev/apikey (free).
 
 To run the frontend alongside the proxy, open a second terminal and run
 `pnpm --filter @tts/web dev` (serves at http://localhost:5173 and proxies
-`/search`, `/items`, and `/health` to the backend).
+`/search`, `/items`, `/health`, `/asset`, and `/trace` to the backend).
 
 ## API
 
@@ -38,6 +39,7 @@ To run the frontend alongside the proxy, open a second terminal and run
 | GET    | `/search?q=&page=`| Search the Workshop (scrapes browse page)    |
 | GET    | `/items/:id`      | Full parsed `TTSMod` (BSON save)             |
 | GET    | `/items/:id/file` | Raw save bytes, filename from header         |
+| GET    | `/asset?url=`      | CORS-safe proxy for external assets (textures, models) |
 | GET    | `/trace?url=&mode=&format=&offset=` | Trace an image into a vector shape (BSON); `offset` insets/outsets in pixels |
 
 ## Commands
@@ -51,6 +53,24 @@ pnpm test         # run the unit tests (vitest)
 pnpm lint         # lint all packages
 ```
 
+## Object viewers
+
+The mod page renders each selected object in 3D. Tiles, tokens, cards, and
+custom models each have a viewer built on `@react-three/fiber`, `@react-three/drei`,
+and `@react-three/postprocessing`, registered per object class and lazy-loaded
+so the three.js stack is code-split out of the main bundle.
+
+- **Tiles / tokens** — extruded from a 2D shape; tokens trace the image's alpha
+  channel via `/trace` to match the artwork's silhouette.
+- **Cards** — a thin rounded rect. Deck images are sheets divided into a
+  `NumWidth` x `NumHeight` grid; the face/back sprite is selected by `CardID`
+  from the containing deck's config.
+- **Custom models** — GLTF/OBJ/FBX loaded from `CustomMesh.MeshURL`.
+
+The camera fits the object's bounds on load, and back faces are flipped so
+they aren't mirrored. See [`docs/decisions.md`](docs/decisions.md) for the
+rationale behind these choices.
+
 ## How search works
 
 Steam has no official search API. The proxy fetches the Workshop browse page

apps/web/src/App.tsx

@@ -1,6 +1,7 @@
 import { Link, Route, Routes } from 'react-router-dom';
 import SearchPage from './pages/SearchPage';
 import ModPage from './pages/ModPage';
+import FullSetupPage from './pages/FullSetupPage';
 
 export default function App() {
   return (
@@ -21,6 +22,7 @@ export default function App() {
         <Routes>
           <Route path="/" element={<SearchPage />} />
           <Route path="/mod/:id" element={<ModPage />} />
+          <Route path="/mod/:id/setup" element={<FullSetupPage />} />
         </Routes>
       </main>
     </div>

apps/web/src/components/viewers/CardViewer.tsx

@@ -11,6 +11,7 @@ import Scene from './Scene';
 import { assetUrl } from './assetUrl';
 import { cardAspect, resolveCardConfig, spriteUv } from './cardResolution';
 import { flipTexture } from './flipTexture';
+import { getSharedGeometry } from './sharedResources';
 
 /** Longer card dimension, in world units. */
 const CARD_LENGTH = 2;
@@ -49,11 +50,22 @@ const FALLBACK_URL =
  * the card.
  */
 export default function CardViewer({ object }: { object: TTSObject }) {
+  return (
+    <Scene>
+      <CardObjectMesh object={object} />
+    </Scene>
+  );
+}
+
+/**
+ * The card mesh for an object, exported so the full-setup view can compose it
+ * into a shared scene.
+ */
+export function CardObjectMesh({ object }: { object: TTSObject }) {
   const { cardId, faceUrl, backUrl, numWidth, numHeight, uniqueBack } =
     resolveCardConfig(object);
 
   return (
-    <Scene>
     <CardMesh
       faceUrl={faceUrl}
       backUrl={backUrl}
@@ -62,12 +74,12 @@ export default function CardViewer({ object }: { object: TTSObject }) {
       uniqueBack={uniqueBack}
       cardId={cardId}
     />
-    </Scene>
   );
 }
 
 // Rendered inside the Canvas so `useTexture` can access the R3F store.
-function CardMesh({
+// Exported so the full-setup view can compose it into a shared scene.
+export function CardMesh({
   faceUrl,
   backUrl,
   numWidth,
@@ -116,7 +128,9 @@ function CardMesh({
 
   // Build the rounded-rect geometry from the card sprite's aspect ratio. The
   // front and back faces each get their own material; the walls are a solid
-  // white, matching TTS card tinting.
+  // white, matching TTS card tinting. Geometry is shared across cards of the
+  // same size so the full-setup view reuses it; the face/back materials stay
+  // per-card because each card clones its texture for sprite UVs.
   const { frontGeo, backGeo, wallsGeo } = useMemo(() => {
     const img = (faceUrl ? face.image : backUrl ? back.image : undefined) as
       | HTMLImageElement
@@ -127,13 +141,12 @@ function CardMesh({
     // Radius scales with the shorter edge so corners look proportional and
     // stay circular (no scaling distortion).
     const shape = roundedRectShape(width, height, CORNER_RADIUS * Math.min(width, height));
-    const { front: frontGeo, back: backGeo, walls: wallsGeo } = extrudeShapeParts(shape, {
+    const parts = extrudeShapeParts(shape, { height: CARD_THICKNESS });
-      height: CARD_THICKNESS,
+    const key = `card:${width}:${height}:${CARD_THICKNESS}`;
-    });
     return {
-      frontGeo: toGeometry(frontGeo),
+      frontGeo: getSharedGeometry(key + ':front', () => toGeometry(parts.front)),
-      backGeo: toGeometry(backGeo),
+      backGeo: getSharedGeometry(key + ':back', () => toGeometry(parts.back)),
-      wallsGeo: toGeometry(wallsGeo),
+      wallsGeo: getSharedGeometry(key + ':walls', () => toGeometry(parts.walls)),
     };
   }, [faceUrl, face, backUrl, back, numWidth, numHeight]);
 

apps/web/src/components/viewers/CustomModelViewer.tsx

@@ -15,24 +15,33 @@ import { FlexibleModelLoader } from './flexibleModelLoader';
  * model's materials when present.
  */
 export default function CustomModelViewer({ object }: { object: TTSObject }) {
+  return (
+    <Scene>
+      <CustomModelMesh object={object} />
+    </Scene>
+  );
+}
+
+/**
+ * The mesh content for a custom model, exported so the full-setup view can
+ * compose it into a shared scene. Renders the model from `CustomMesh.MeshURL`
+ * (or a neutral box placeholder when absent).
+ */
+export function CustomModelMesh({ object }: { object: TTSObject }) {
   const meshUrl = object.CustomMesh?.MeshURL;
   if (!meshUrl) {
     return (
-      <Scene>
       <mesh>
         <boxGeometry args={[1, 1, 1]} />
         <meshStandardMaterial color="#52525b" />
       </mesh>
-      </Scene>
     );
   }
 
   return (
-    <Scene>
     <Suspense fallback={null}>
       <Model meshUrl={meshUrl} diffuseUrl={object.CustomMesh?.DiffuseURL} />
     </Suspense>
-    </Scene>
   );
 }
 

apps/web/src/components/viewers/TileViewer.tsx

@@ -14,6 +14,7 @@ import {
 import Scene from './Scene';
 import { assetUrl } from './assetUrl';
 import { flipTexture } from './flipTexture';
+import { getSharedGeometry, getSharedMaterial } from './sharedResources';
 
 /** `CustomTile.Type` enum from Tabletop Simulator. */
 const TileType = {
@@ -34,20 +35,29 @@ const TILE_SIZE = 2;
  * source image instead of being forced square.
  */
 export default function TileViewer({ object }: { object: TTSObject }) {
+  return (
+    <Scene>
+      <TileObjectMesh object={object} />
+    </Scene>
+  );
+}
+
+/**
+ * The tile mesh for an object, exported so the full-setup view can compose it
+ * into a shared scene.
+ */
+export function TileObjectMesh({ object }: { object: TTSObject }) {
   const url = object.CustomImage?.ImageURL ?? object.CustomImage?.ImageSecondaryURL;
   const thickness = object.CustomImage?.CustomTile?.Thickness ?? 0.2;
   const type = object.CustomImage?.CustomTile?.Type ?? TileType.Box;
   const stretch = object.CustomImage?.CustomTile?.Stretch ?? true;
 
-  return (
+  return <TileMesh url={url} thickness={thickness} type={type} stretch={stretch} />;
-    <Scene>
-      <TileMesh url={url} thickness={thickness} type={type} stretch={stretch} />
-    </Scene>
-  );
 }
 
 // Rendered inside the Canvas so `useTexture` can access the R3F store.
-function TileMesh({
+// Exported so the full-setup view can compose it into a shared scene.
+export function TileMesh({
   url,
   thickness,
   type,
@@ -62,16 +72,18 @@ function TileMesh({
 
   // Build the extruded geometry from the tile shape. When `stretch` is false
   // and a texture is available, scale the shape to the image's aspect ratio so
-  // the tile matches the source proportions instead of being square.
+  // the tile matches the source proportions instead of being square. Shared
+  // across tiles with the same shape so the full-setup view reuses geometry.
   const { front, back, walls } = useMemo(() => {
     const img = texture?.image as HTMLImageElement;
     const aspect = stretch ? img.width / img.height : 1;
     const shape = tileShape(type, aspect);
     const parts = extrudeShapeParts(shape, { height: thickness });
+    const key = `tile:${type}:${aspect}:${thickness}`;
     return {
-      front: toGeometry(parts.front),
+      front: getSharedGeometry(key + ':front', () => toGeometry(parts.front)),
-      back: toGeometry(parts.back),
+      back: getSharedGeometry(key + ':back', () => toGeometry(parts.back)),
-      walls: toGeometry(parts.walls),
+      walls: getSharedGeometry(key + ':walls', () => toGeometry(parts.walls)),
     };
   }, [type, thickness, stretch, texture]);
 
@@ -79,28 +91,32 @@ function TileMesh({
   // left/right to avoid a mirrored texture when viewed from behind.
   const backMap = useMemo(() => (texture ? flipTexture(texture) : null), [texture]);
 
+  // Shared materials: the front/back carry the tile texture (or a neutral
+  // color when absent); the walls are a solid white, matching TTS tinting.
+  const faceKey = `tile-face:${url ?? 'none'}`;
+  const faceMat = getSharedMaterial(faceKey, {
+    color: texture ? '#ffffff' : '#52525b',
+    map: texture ?? undefined,
+    roughness: 0.8,
+  });
+  const backMat = getSharedMaterial(faceKey + ':back', {
+    color: texture ? '#ffffff' : '#52525b',
+    map: backMap ?? undefined,
+    roughness: 0.8,
+  });
+  const wallMat = getSharedMaterial('tile-wall', {
+    color: '#ffffff',
+    roughness: 0.8,
+  });
+
   return (
     <group>
       {/* Front face carries the tile texture. */}
-      <mesh geometry={front}>
+      <mesh geometry={front} material={faceMat} />
-        <meshStandardMaterial
-          color={texture ? '#ffffff' : '#52525b'}
-          map={texture ?? undefined}
-          roughness={0.8}
-        />
-      </mesh>
       {/* Back face, flipped so it isn't mirrored. */}
-      <mesh geometry={back}>
+      <mesh geometry={back} material={backMat} />
-        <meshStandardMaterial
-          color={texture ? '#ffffff' : '#52525b'}
-          map={backMap ?? undefined}
-          roughness={0.8}
-        />
-      </mesh>
       {/* Sides are a solid white, matching TTS tile tinting. */}
-      <mesh geometry={walls}>
+      <mesh geometry={walls} material={wallMat} />
-        <meshStandardMaterial color="#ffffff" roughness={0.8} />
-      </mesh>
     </group>
   );
 }

apps/web/src/components/viewers/TokenViewer.tsx

@@ -11,6 +11,7 @@ import {
 import { traceImage } from '../../api';
 import Scene from './Scene';
 import { assetUrl } from './assetUrl';
+import { getSharedGeometry, getSharedMaterial } from './sharedResources';
 
 const TOKEN_SIZE = 1.8;
 
@@ -24,18 +25,27 @@ const TRACE_INSET = 2;
  * the proxy `/trace` endpoint, so the token matches the artwork's silhouette.
  */
 export default function TokenViewer({ object }: { object: TTSObject }) {
-  const url = object.CustomImage?.ImageURL ?? object.CustomImage?.ImageSecondaryURL;
-  const thickness = object.CustomImage?.CustomToken?.Thickness ?? 0.1;
-
   return (
     <Scene>
-      <TokenMesh url={url} thickness={thickness} />
+      <TokenObjectMesh object={object} />
     </Scene>
   );
 }
 
+/**
+ * The token mesh for an object, exported so the full-setup view can compose it
+ * into a shared scene.
+ */
+export function TokenObjectMesh({ object }: { object: TTSObject }) {
+  const url = object.CustomImage?.ImageURL ?? object.CustomImage?.ImageSecondaryURL;
+  const thickness = object.CustomImage?.CustomToken?.Thickness ?? 0.1;
+
+  return <TokenMesh url={url} thickness={thickness} />;
+}
+
 // Rendered inside the Canvas so `useTexture` can access the R3F store.
-function TokenMesh({ url, thickness }: { url?: string; thickness: number }) {
+// Exported so the full-setup view can compose it into a shared scene.
+export function TokenMesh({ url, thickness }: { url?: string; thickness: number }) {
   const texture: THREE.Texture | null = url ? useTexture(assetUrl(url)) : null;
 
   // Trace the image's alpha channel into a shape. Suspends until the trace
@@ -50,28 +60,30 @@ function TokenMesh({ url, thickness }: { url?: string; thickness: number }) {
     const shape = trace ? toMeshShape(trace) : circleShape();
     const uvBounds = trace ? toUvBounds(trace) : undefined;
     const parts = extrudeShapeParts(shape, { height: thickness, uvBounds });
+    // Shared across tokens with the same source image (the trace is cached per
+    // URL, so the silhouette is deterministic) so the full-setup view reuses
+    // geometry.
+    const key = `token:${url ?? 'none'}:${thickness}`;
     return {
-      front: toGeometry(parts.front),
+      front: getSharedGeometry(key + ':front', () => toGeometry(parts.front)),
-      back: toGeometry(parts.back),
+      back: getSharedGeometry(key + ':back', () => toGeometry(parts.back)),
-      walls: toGeometry(parts.walls),
+      walls: getSharedGeometry(key + ':walls', () => toGeometry(parts.walls)),
     };
-  }, [trace, thickness]);
+  }, [trace, thickness, url]);
 
   // A token is solid: front, back, and walls all carry the texture (projected
   // UV), unlike tiles/cards where only the faces are textured.
-  const material = (
+  const material = getSharedMaterial(`token:${url ?? 'none'}`, {
-    <meshStandardMaterial
+    color: texture ? '#ffffff' : '#52525b',
-      color={texture ? '#ffffff' : '#52525b'}
+    map: texture ?? undefined,
-      map={texture ?? undefined}
+    roughness: 0.8,
-      roughness={0.8}
+  });
-    />
-  );
 
   return (
     <group>
-      <mesh geometry={front}>{material}</mesh>
+      <mesh geometry={front} material={material} />
-      <mesh geometry={back}>{material}</mesh>
+      <mesh geometry={back} material={material} />
-      <mesh geometry={walls}>{material}</mesh>
+      <mesh geometry={walls} material={material} />
     </group>
   );
 }
@@ -82,30 +94,39 @@ interface TraceData {
   height: number;
 }
 
-// Cache trace promises by URL so Suspense doesn't re-issue the request on every
+// Cache traces by URL so Suspense doesn't re-issue the request on every render
-// render while the boundary is held open.
+// while the boundary is held open. A URL maps to either a pending promise (while
-const traceCache = new Map<string, Promise<TraceData | null>>();
+// loading) or the resolved value (once loaded).
+const traceCache = new Map<string, TraceData | null | Promise<TraceData | null>>();
 
 /**
  * Suspend on the alpha trace for `url`, resolving to the traced shape (or null
- * when there's no URL / the trace fails). Throwing a cached promise here lets
+ * when there's no URL / the trace fails). Throws the cached promise only while
- * the surrounding Suspense boundary hold rendering until the trace completes.
+ * it's pending; once resolved, the value is returned directly so the retry
+ * render completes instead of suspending forever.
  */
 function useTrace(url: string | undefined): TraceData | null {
   if (!url) return null;
-  let promise = traceCache.get(url);
+  const cached = traceCache.get(url);
-  if (!promise) {
+  if (cached === undefined) {
-    promise = traceImage(url, 'alpha', -TRACE_INSET).then((result) => {
+    const promise = traceImage(url, 'alpha', -TRACE_INSET).then((result) => {
-      if (!result.shape) return null;
+      const value: TraceData | null = result.shape
-      return {
+        ? {
             shape: result.shape,
             width: result.width,
             height: result.height,
-      } as TraceData;
+          }
+        : null;
+      // Replace the pending promise with the resolved value so later renders
+      // return it instead of re-suspending on a settled promise.
+      traceCache.set(url, value);
+      return value;
     });
     traceCache.set(url, promise);
-  }
     throw promise;
+  }
+  if (cached instanceof Promise) throw cached;
+  return cached;
 }
 
 /** Convert raw extruded arrays into a three.js `BufferGeometry`. */

apps/web/src/components/viewers/sharedResources.ts

@@ -0,0 +1,42 @@
+import * as THREE from 'three';
+
+/**
+ * Module-level caches so the full-setup view can share geometry and materials
+ * across many objects instead of rebuilding them per object. Keyed by a
+ * canonical string describing the resource, so identical objects reuse one
+ * instance. drei already caches textures globally by URL, so sharing the
+ * material on top avoids per-object material allocation for tiles/tokens with
+ * the same image.
+ *
+ * These caches live for the session (like drei's global texture cache) and are
+ * not disposed on unmount; see `docs/full-setup-view.md`.
+ */
+
+const geometryCache = new Map<string, THREE.BufferGeometry>();
+const materialCache = new Map<string, THREE.MeshStandardMaterial>();
+
+/** Get or create a geometry for `key`. */
+export function getSharedGeometry(
+  key: string,
+  build: () => THREE.BufferGeometry,
+): THREE.BufferGeometry {
+  let geo = geometryCache.get(key);
+  if (!geo) {
+    geo = build();
+    geometryCache.set(key, geo);
+  }
+  return geo;
+}
+
+/** Get or create a standard material for `key`. */
+export function getSharedMaterial(
+  key: string,
+  params: THREE.MeshStandardMaterialParameters,
+): THREE.MeshStandardMaterial {
+  let mat = materialCache.get(key);
+  if (!mat) {
+    mat = new THREE.MeshStandardMaterial(params);
+    materialCache.set(key, mat);
+  }
+  return mat;
+}

apps/web/src/pages/FullSetupPage.tsx

@@ -0,0 +1,145 @@
+import { Suspense, useEffect, useMemo } from 'react';
+import { useParams } from 'react-router-dom';
+import { flattenObjects } from '@tts/extract';
+import type { TTSObject } from '@tts/shared';
+import { useModStore } from '../stores/modStore';
+import { useSearchStore } from '../stores/searchStore';
+import Scene from '../components/viewers/Scene';
+import { TileObjectMesh } from '../components/viewers/TileViewer';
+import { TokenObjectMesh } from '../components/viewers/TokenViewer';
+import { CardObjectMesh } from '../components/viewers/CardViewer';
+import { CustomModelMesh } from '../components/viewers/CustomModelViewer';
+
+/** Object classes that carry renderable assets (mirrors `viewers/register.ts`). */
+const RENDERABLE = new Set([
+  'Tile',
+  'Custom_Tile',
+  'Custom_Token',
+  'Card',
+  'CardCustom',
+  'Deck',
+  'DeckCustom',
+  'Custom_Deck',
+  'Custom_Model',
+  'Custom_Model_Bag',
+  'Custom_Model_Infinite_Bag',
+]);
+
+/** Grid cell spacing (world units) and columns per row. */
+const CELL = 2.5;
+const COLS = 8;
+
+/**
+ * A "full setup" view: renders every loadable object in a save into a single
+ * shared scene, laid out on a virtual table. Objects are grouped by type so
+ * like objects sit together. Geometry and materials are shared across objects
+ * (see `components/viewers/sharedResources.ts`).
+ */
+export default function FullSetupPage() {
+  const { id } = useParams<{ id: string }>();
+  const { mod, loading, error, load } = useModStore();
+  const item = useSearchStore((s) => s.items.find((i) => i.id === id));
+
+  useEffect(() => {
+    if (id) load(id, item?.fileUrl);
+  }, [id, item?.fileUrl, load]);
+
+  const objects = useMemo(
+    () => (mod ? flattenObjects(mod) : []),
+    [mod],
+  );
+
+  const renderable = useMemo(
+    () => objects.filter((o) => RENDERABLE.has(o.Name)),
+    [objects],
+  );
+  const skipped = objects.length - renderable.length;
+
+  const placed = useMemo(() => layoutObjects(renderable), [renderable]);
+
+  if (loading) return <p className="text-sm text-zinc-400">Loading mod…</p>;
+  if (error) return <p className="text-sm text-red-400">{error}</p>;
+  if (!mod) return <p className="text-sm text-zinc-500">No mod loaded.</p>;
+
+  return (
+    <div className="space-y-6">
+      <div>
+        <h1 className="text-2xl font-semibold">Full setup</h1>
+        <p className="mt-1 text-sm text-zinc-400">
+          {objects.length} objects · {renderable.length} rendered
+          {skipped > 0 ? ` · ${skipped} skipped` : ''}
+        </p>
+      </div>
+
+      <Scene>
+        <Suspense fallback={null}>
+          {/* Key by index, not GUID: cards in a deck share the deck's GUID. */}
+          {placed.map(({ object, position }, index) => (
+            <group key={index} position={position}>
+              <RenderObject object={object} />
+            </group>
+          ))}
+        </Suspense>
+      </Scene>
+    </div>
+  );
+}
+
+/** Dispatch a renderable object to the mesh component for its class. */
+function RenderObject({ object }: { object: TTSObject }) {
+  switch (object.Name) {
+    case 'Tile':
+    case 'Custom_Tile':
+      return <TileObjectMesh object={object} />;
+    case 'Custom_Token':
+      return <TokenObjectMesh object={object} />;
+    case 'Card':
+    case 'CardCustom':
+    case 'Deck':
+    case 'DeckCustom':
+    case 'Custom_Deck':
+      return <CardObjectMesh object={object} />;
+    case 'Custom_Model':
+    case 'Custom_Model_Bag':
+    case 'Custom_Model_Infinite_Bag':
+      return <CustomModelMesh object={object} />;
+    default:
+      return null;
+  }
+}
+
+/**
+ * Assign each renderable object a grid position, grouping by class so like
+ * objects sit together. Returns the object plus its `[x, y, z]` position.
+ */
+function layoutObjects(
+  objects: TTSObject[],
+): { object: TTSObject; position: [number, number, number] }[] {
+  // Group by type so like objects sit together.
+  const groups = new Map<string, TTSObject[]>();
+  for (const o of objects) {
+    const arr = groups.get(o.Name) ?? [];
+    arr.push(o);
+    groups.set(o.Name, arr);
+  }
+
+  const result: { object: TTSObject; position: [number, number, number] }[] = [];
+  let row = 0;
+  let col = 0;
+  for (const objs of groups.values()) {
+    for (const o of objs) {
+      result.push({ object: o, position: [col * CELL, 0, row * CELL] });
+      col++;
+      if (col >= COLS) {
+        col = 0;
+        row++;
+      }
+    }
+    // Start a fresh row after each group.
+    if (col !== 0) {
+      col = 0;
+      row++;
+    }
+  }
+  return result;
+}

apps/web/src/pages/ModPage.tsx

@@ -1,6 +1,6 @@
 import { Suspense, useEffect, useMemo, useState } from 'react';
 import { Icon } from '@iconify/react';
-import { useParams } from 'react-router-dom';
+import { Link, useParams } from 'react-router-dom';
 import { buildTree, collectRefs } from '@tts/extract';
 import { useModStore } from '../stores/modStore';
 import { useSearchStore } from '../stores/searchStore';
@@ -47,12 +47,20 @@ export default function ModPage() {
           {mod.GameMode} · {mod.Date} · {tree.length} objects · {refs.length}{' '}
           asset refs
         </p>
+        <div className="mt-3 flex gap-2">
           <a
             href={modFileUrl(id!, item?.fileUrl)}
-          className="mt-3 inline-block rounded-lg bg-zinc-100 px-4 py-2 text-sm font-medium text-zinc-900 hover:bg-zinc-300"
+            className="inline-block rounded-lg bg-zinc-100 px-4 py-2 text-sm font-medium text-zinc-900 hover:bg-zinc-300"
           >
             Download save file
           </a>
+          <Link
+            to={`/mod/${id}/setup`}
+            className="inline-block rounded-lg border border-zinc-700 px-4 py-2 text-sm font-medium text-zinc-200 hover:bg-zinc-800"
+          >
+            Full setup
+          </Link>
+        </div>
       </div>
 
       <div className="grid grid-cols-1 gap-6 lg:grid-cols-[280px_1fr]">

docs/full-setup-view.md

@@ -0,0 +1,115 @@
+# Full Setup View — Plan
+
+> **Scope:** A new page that renders every loadable object in a save into a
+> single shared 3D scene, sharing materials and geometry where possible. This
+> complements the existing per-object inspection on the mod page.
+
+## Motivation
+
+The mod page (`apps/web/src/pages/ModPage.tsx`) inspects one object at a time
+inside a shared `Scene`. A "full setup" view renders the whole save at once —
+every tile, token, card, and custom model laid out on a virtual table — so a
+user can see the entire scene at a glance.
+
+## Current architecture (relevant pieces)
+
+- Each viewer owns its own `<Scene>` wrapper (`components/viewers/Scene.tsx`),
+  which provides the camera, lights, orbit controls, contact shadows, and
+  post-processing. The mesh content lives inside each viewer:
+  - `TileViewer` → `<TileMesh>` (extruded tile, textured top face)
+  - `TokenViewer` → `<TokenMesh>` (alpha-traced extruded token)
+  - `CardViewer` → `<CardMesh>` (rounded-rect card, sprite UVs)
+  - `CustomModelViewer` → `<Model>` (GLTF/OBJ/FBX via `FlexibleModelLoader`)
+- `@tts/extract` provides `flattenObjects(mod)` / `traverseMod` to enumerate
+  every object in a save.
+- `@tts/mesh` provides the shape + extrusion helpers used by the viewers.
+- `TTSObject` carries no position data, so exact table placement is not
+  recoverable — the full setup lays objects out itself.
+
+## Plan
+
+### 1. Refactor viewers to expose their mesh content (no `Scene`)
+
+Each viewer currently wraps its mesh in `<Scene>`. To compose everything into
+one scene, extract and export the inner mesh components, keeping the existing
+viewers as thin wrappers:
+
+- `TileViewer` → export `TileObjectMesh` (accepts a `TTSObject`)
+- `TokenViewer` → export `TokenObjectMesh`
+- `CardViewer` → export `CardObjectMesh`
+- `CustomModelViewer` → export `CustomModelMesh` (the `<Model>` + fallback box)
+
+Each viewer now renders `<Scene><XxxObjectMesh object={…} /></Scene>`, so the
+object-facing wrapper is the single source of truth for both the per-object
+view and the full-setup view.
+
+### 2. New page `FullSetupPage.tsx` at `/mod/:id/setup`
+
+- Reuse `useModStore` (same load path as `ModPage`).
+- `flattenObjects(mod)` → filter to renderable classes (those registered in
+  `components/viewers/register.ts`: `Tile`, `Custom_Tile`, `Custom_Token`,
+  `Card`, `CardCustom`, `Deck`, `DeckCustom`, `Custom_Deck`, `Custom_Model*`).
+- Render **one** `<Scene>` containing all renderable objects as
+  `<group position={…}>` entries, dispatching to the right `*Mesh` by `Name`.
+- Show a summary header (total objects, rendered count, skipped count) and
+  loading/error states matching `ModPage`.
+
+### 3. Layout
+
+- Arrange objects in a grid on the "table" (fixed spacing, wrapping by row),
+  grouping by type so cards sit together, tiles together, etc.
+- `Scene`'s `Bounds fit` already auto-fits the camera to the full layout, so no
+  camera work is needed.
+- Non-renderable objects (bags, dice, boards without assets) are skipped and
+  counted, not dropped silently.
+
+### 4. Share materials & geometry
+
+- **Geometry cache (module-level `Map<string, BufferGeometry>`):** key by a
+  canonical string — `card:{w}:{h}:{t}`, `tile:{type}:{aspect}:{t}`,
+  `token:{url}:{t}`, `model:{meshUrl}`. All cards of the same size, or tiles
+  of the same type/size, reuse one geometry instead of rebuilding per object.
+  Token geometry is keyed by the source image URL (the trace is cached per
+  URL, so the silhouette is deterministic).
+- **Material cache (module-level `Map<string, Material>`):** key by
+  `textureUrl + color + roughness`. drei already caches textures by URL
+  globally, so sharing the material on top avoids per-object material
+  allocation for tiles/tokens with the same image.
+- **Cards are the exception:** each card clones its texture for sprite UVs, so
+  its face material cannot be shared — but its geometry still can (same card
+  size).
+- Dispose shared resources on page unmount, or accept a module-level cache for
+  the session (see Open decisions).
+
+### 5. Routing & navigation
+
+- Add `<Route path="/mod/:id/setup" element={<FullSetupPage />} />` in
+  `apps/web/src/App.tsx`.
+- Add a "Full setup" link/button on `ModPage` next to the download button.
+
+### 6. Edge cases
+
+- Objects with no asset (no `ImageURL`/`MeshURL`) render as neutral-colored
+  placeholders (matching the current viewers' fallback behavior).
+- Token tracing suspends per URL (already cached in `TokenViewer`); the shared
+  `Scene` Suspense boundary handles it.
+- Large saves: the grid + shared geometry keeps it performant, but cap or warn
+  on very large object counts if needed.
+
+## Files touched
+
+- `apps/web/src/components/viewers/{Tile,Token,Card,CustomModel}Viewer.tsx` —
+  export object-facing mesh wrappers
+- `apps/web/src/components/viewers/sharedResources.ts` — new geometry/material
+  caches
+- `apps/web/src/pages/FullSetupPage.tsx` — new
+- `apps/web/src/App.tsx` — route
+- `apps/web/src/pages/ModPage.tsx` — nav link
+- Possibly a small `geometryCache`/`materialCache` helper under
+  `components/viewers/`
+
+## Open decisions (defaults in bold)
+
+- **Layout style** — **grouped grid** vs a fan/stack for cards.
+- **Geometry/material cache lifetime** — **session-level module cache**
+  (simplest, consistent with drei's global texture cache) vs dispose-on-unmount.