diff --git a/tools/installer/modules/custom-module-manager.js b/tools/installer/modules/custom-module-manager.js
index 5e5766ee2..84b250931 100644
--- a/tools/installer/modules/custom-module-manager.js
+++ b/tools/installer/modules/custom-module-manager.js
@@ -188,15 +188,17 @@ class CustomModuleManager {
    * Results are cached in _resolutionCache keyed by module code.
    * @param {string} repoPath - Absolute path to the cloned repository
    * @param {Object} plugin - Raw plugin object from marketplace.json
+   * @param {string} [repoUrl] - Original GitHub URL for manifest tracking
    * @returns {Promise<Array<Object>>} Array of ResolvedModule objects
    */
-  async resolvePlugin(repoPath, plugin) {
+  async resolvePlugin(repoPath, plugin, repoUrl) {
     const { PluginResolver } = require('./plugin-resolver');
     const resolver = new PluginResolver();
     const resolved = await resolver.resolve(repoPath, plugin);
 
-    // Cache each resolved module by its code for lookup during install
+    // Stamp repo URL onto each resolved module for manifest tracking
     for (const mod of resolved) {
+      if (repoUrl) mod.repoUrl = repoUrl;
       CustomModuleManager._resolutionCache.set(mod.code, mod);
     }
 
diff --git a/tools/installer/modules/official-modules.js b/tools/installer/modules/official-modules.js
index a203dd85d..2e18c1a15 100644
--- a/tools/installer/modules/official-modules.js
+++ b/tools/installer/modules/official-modules.js
@@ -336,10 +336,10 @@ class OfficialModules {
     const manifestObj = new Manifest();
 
     await manifestObj.addModule(bmadDir, resolved.code, {
-      version: resolved.version || '',
-      source: `custom:${resolved.pluginName}`,
-      npmPackage: '',
-      repoUrl: '',
+      version: resolved.version || null,
+      source: 'custom',
+      npmPackage: null,
+      repoUrl: resolved.repoUrl || null,
     });
 
     return { success: true, module: resolved.code, path: targetPath, versionInfo: { version: resolved.version || '' } };
diff --git a/tools/installer/ui.js b/tools/installer/ui.js
index 75b704f64..9908a462f 100644
--- a/tools/installer/ui.js
+++ b/tools/installer/ui.js
@@ -881,7 +881,7 @@ class UI {
       const allResolved = [];
       for (const plugin of plugins) {
         try {
-          const resolved = await customMgr.resolvePlugin(repoPath, plugin.rawPlugin);
+          const resolved = await customMgr.resolvePlugin(repoPath, plugin.rawPlugin, url.trim());
           if (resolved.length > 0) {
             allResolved.push(...resolved);
           } else {