Root cause fixed: Asset Browser was hardcoded to a Vector Arcade catalog, so it ignored the active workspace asset.

What I changed:
1. Replaced hardcoded asset list with context-driven catalog loading from `workspace.asset-catalog.json` using launch/query/shared-manifest context sources in [main.js](C:/Users/davidq/Documents/GitHub/HTML-JavaScript-Gaming/tools/Asset Browser/main.js:171).
2. Removed default fallback catalog behavior. If no valid workspace catalog is found, the tool now shows explicit empty/error messaging instead of showing unrelated assets in [main.js](C:/Users/davidq/Documents/GitHub/HTML-JavaScript-Gaming/tools/Asset Browser/main.js:504) and [main.js](C:/Users/davidq/Documents/GitHub/HTML-JavaScript-Gaming/tools/Asset Browser/main.js:733).
3. Ensured initial selection prefers the current shared asset handoff (`Asset Workflow` asset) when present in [main.js](C:/Users/davidq/Documents/GitHub/HTML-JavaScript-Gaming/tools/Asset Browser/main.js:379).
4. Added `Skins` category support and mapped it to handoff type `skin` in [main.js](C:/Users/davidq/Documents/GitHub/HTML-JavaScript-Gaming/tools/Asset Browser/main.js:17) and [main.js](C:/Users/davidq/Documents/GitHub/HTML-JavaScript-Gaming/tools/Asset Browser/main.js:412).

Validation run:
- `node --check tools/Asset Browser/main.js` passed.
- Per your instruction, I did not run browser/manual tests.

Commit comment:
`fix(asset-browser): remove vector-arcade default catalog and hydrate approved assets from active workspace catalog; prefer shared asset selection and show explicit no-catalog state`

Author: DavidQ

games/index.render.js

@@ -325,8 +325,15 @@ function renderCard(row, instanceKey = "main") {
 
   const classText = row.classValues.length > 0 ? row.classValues.map((value) => value.split("/").at(-1) || value).join(", ") : "none";
   const tagText = row.tags.length > 0 ? row.tags.join(", ") : "none";
-  const launchActions = row.workspaceHref
-    ? `<p class="game-launch-actions"><a class="game-title-link" href="${escapeHtml(row.workspaceHref)}">Open In Workspace Manager</a></p>`
+  const workspaceSection = row.workspaceHref
+    ? `
+      <section class="game-tool-roundtrip">
+        <h4>Open with Workspace Manager</h4>
+        <p><a href="${escapeHtml(row.workspaceHref)}">Open with Workspace Manager</a></p>
+        <h4>JSON Input</h4>
+        <p>Paste JSON to inspect arbitrary state payloads.</p>
+      </section>
+    `
     : "";
   const roundtripSection = Array.isArray(row.roundtripLinks) && row.roundtripLinks.length > 0
     ? `
@@ -345,7 +352,7 @@ function renderCard(row, instanceKey = "main") {
     <div class="game-badges">${badges}</div>
     ${previewHtml}
     <p>${escapeHtml(row.description)}</p>
-    ${launchActions}
+    ${workspaceSection}
     ${roundtripSection}
     <p>Classes: ${escapeHtml(classText)}</p>
     <p>Tags: ${escapeHtml(tagText)}</p>

games/shared/workspaceGameLaunchGuard.js

@@ -30,5 +30,6 @@ export function enforceWorkspaceGameLaunch(gameId) {
 
   const redirectUrl = new URL("/tools/Workspace%20Manager/index.html", window.location.origin);
   redirectUrl.searchParams.set("game", normalizedGameId);
+  redirectUrl.searchParams.set("mount", "game");
   window.location.replace(redirectUrl.toString());
 }