fix: remove redundant "None" skip option from module selection

The "None - Skip module installation" option was unnecessary since
core is always locked/selected, satisfying the required constraint.
Users can simply press Enter with only core selected to skip modules.
Also removes dead code: selectModules(), getExternalModuleChoices(),
and selectExternalModules() methods that were never called.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tools/cli/lib/ui.js

@@ -274,7 +274,6 @@ class UI {
           await prompts.log.info(`Using modules from command-line: ${selectedModules.join(', ')}`);
         } else {
           selectedModules = await this.selectAllModules(installedModuleIds);
-          selectedModules = selectedModules.filter((m) => m !== 'core');
         }
 
         // After module selection, ask about custom modules
@@ -898,104 +897,6 @@ class UI {
     return moduleChoices;
   }
 
-  /**
-   * Prompt for module selection
-   * @param {Array} moduleChoices - Available module choices
-   * @returns {Array} Selected module IDs
-   */
-  async selectModules(moduleChoices, defaultSelections = null) {
-    // If defaultSelections is provided, use it to override checked state
-    // Otherwise preserve the checked state from moduleChoices (set by getModuleChoices)
-    const choicesWithDefaults = moduleChoices.map((choice) => ({
-      ...choice,
-      ...(defaultSelections === null ? {} : { checked: defaultSelections.includes(choice.value) }),
-    }));
-
-    // Add a "None" option at the end for users who changed their mind
-    const choicesWithSkipOption = [
-      ...choicesWithDefaults,
-      {
-        value: '__NONE__',
-        label: '\u26A0 None / I changed my mind - skip module installation',
-        checked: false,
-      },
-    ];
-
-    const selected = await prompts.multiselect({
-      message: 'Select modules to install (use arrow keys, space to toggle):',
-      choices: choicesWithSkipOption,
-      required: true,
-    });
-
-    // If user selected both "__NONE__" and other items, honor the "None" choice
-    if (selected && selected.includes('__NONE__') && selected.length > 1) {
-      await prompts.log.warn('"None / I changed my mind" was selected, so no modules will be installed.');
-      return [];
-    }
-
-    // Filter out the special '__NONE__' value
-    return selected ? selected.filter((m) => m !== '__NONE__') : [];
-  }
-
-  /**
-   * Get external module choices for selection
-   * @returns {Array} External module choices for prompt
-   */
-  async getExternalModuleChoices() {
-    const externalManager = new ExternalModuleManager();
-    const modules = await externalManager.listAvailable();
-
-    return modules.map((mod) => ({
-      name: mod.name,
-      value: mod.code, // Use the code (e.g., 'cis') as the value
-      checked: mod.defaultSelected || false,
-      hint: mod.description || undefined, // Show description as hint
-      module: mod, // Store full module info for later use
-    }));
-  }
-
-  /**
-   * Prompt for external module selection
-   * @param {Array} externalModuleChoices - Available external module choices
-   * @param {Array} defaultSelections - Module codes to pre-select
-   * @returns {Array} Selected external module codes
-   */
-  async selectExternalModules(externalModuleChoices, defaultSelections = []) {
-    // Build a message showing available modules
-    const message = 'Select official BMad modules to install (use arrow keys, space to toggle):';
-
-    // Mark choices as checked based on defaultSelections
-    const choicesWithDefaults = externalModuleChoices.map((choice) => ({
-      ...choice,
-      checked: defaultSelections.includes(choice.value),
-    }));
-
-    // Add a "None" option at the end for users who changed their mind
-    const choicesWithSkipOption = [
-      ...choicesWithDefaults,
-      {
-        name: '⚠ None / I changed my mind - skip external module installation',
-        value: '__NONE__',
-        checked: false,
-      },
-    ];
-
-    const selected = await prompts.multiselect({
-      message,
-      choices: choicesWithSkipOption,
-      required: true,
-    });
-
-    // If user selected both "__NONE__" and other items, honor the "None" choice
-    if (selected && selected.includes('__NONE__') && selected.length > 1) {
-      await prompts.log.warn('"None / I changed my mind" was selected, so no external modules will be installed.');
-      return [];
-    }
-
-    // Filter out the special '__NONE__' value
-    return selected ? selected.filter((m) => m !== '__NONE__') : [];
-  }
-
   /**
    * Select all modules (core + official + community) using grouped multiselect
    * @param {Set} installedModuleIds - Currently installed module IDs
@@ -1068,11 +969,7 @@ class UI {
         }
       }
     }
-    allOptions.push(...communityModules.map(({ label, value, hint }) => ({ label, value, hint })), {
+    allOptions.push(...communityModules.map(({ label, value, hint }) => ({ label, value, hint })));
-      // "None" option at the end
-      label: '\u26A0 None - Skip module installation',
-      value: '__NONE__',
-    });
 
     const selected = await prompts.autocompleteMultiselect({
       message: 'Select modules to install:',
@@ -1083,14 +980,7 @@ class UI {
       maxItems: allOptions.length,
     });
 
-    // If user selected both "__NONE__" and other items, honor the "None" choice
+    const result = selected ? selected.filter((m) => m !== 'core') : [];
-    if (selected && selected.includes('__NONE__') && selected.length > 1) {
-      await prompts.log.warn('"None" was selected, so no modules will be installed.');
-      return [];
-    }
-
-    // Filter out the special '__NONE__' value
-    const result = selected ? selected.filter((m) => m !== '__NONE__') : [];
 
     // Display selected modules as bulleted list
     if (result.length > 0) {