feat(installer): register bmo as built-in module

- Add orchestrator-skills lookup in official-modules listAvailable()
- Add orchestrator-skills resolution in official-modules findModuleSource()
- Add bmo to discoverOfficialModuleYamls built-ins list
- Map bmo code to src/orchestrator-skills in getModulePath()

Allows --set modules.bmo.enable=true during non-interactive installs
and makes bmo appear in interactive module picker.

tools/installer/list-options.js

@@ -54,7 +54,7 @@ async function discoverOfficialModuleYamls() {
   };
 
   // Built-ins.
-  for (const code of ['core', 'bmm']) {
+  for (const code of ['core', 'bmm', 'bmo']) {
     const yamlPath = path.join(getModulePath(code), 'module.yaml');
     if (await fs.pathExists(yamlPath)) {
       // Built-ins use their well-known short codes regardless of what the

tools/installer/modules/official-modules.js

@@ -128,6 +128,15 @@ class OfficialModules {
       }
     }
 
+    // Add built-in bmo module (directly under src/orchestrator-skills)
+    const bmoPath = getSourcePath('orchestrator-skills');
+    if (await fs.pathExists(bmoPath)) {
+      const bmoInfo = await this.getModuleInfo(bmoPath, 'bmo', 'src/orchestrator-skills');
+      if (bmoInfo) {
+        modules.push(bmoInfo);
+      }
+    }
+
     return { modules };
   }
 
@@ -225,6 +234,14 @@ class OfficialModules {
       }
     }
 
+    // Check for built-in bmo module (directly under src/orchestrator-skills)
+    if (moduleCode === 'bmo') {
+      const bmoPath = getSourcePath('orchestrator-skills');
+      if (await fs.pathExists(bmoPath)) {
+        return bmoPath;
+      }
+    }
+
     // Check external official modules (pass channelOptions so channel plan applies)
     const externalSource = await this.externalModuleManager.findExternalModuleSource(moduleCode, options);
     if (externalSource) {

tools/installer/project-root.js

@@ -68,6 +68,9 @@ function getModulePath(moduleName, ...segments) {
   if (moduleName === 'bmm') {
     return getSourcePath('bmm-skills', ...segments);
   }
+  if (moduleName === 'bmo') {
+    return getSourcePath('orchestrator-skills', ...segments);
+  }
   return getSourcePath('modules', moduleName, ...segments);
 }