fix: sync installer fixes from claude-superskills (v2.0.7-v2.0.8)

- path-resolver.js: Copilot path ~/.github/skills/ → ~/.copilot/skills/ (global + local)
- copilot.js: add migrateLegacySkills() — auto-cleans old ~/.github/skills/ on install
- cli.js nuclearUninstall: add ~/.copilot/skills/ entry + keep ~/.github/skills/ as legacy
- cli.js + interactive.js: add promptAction() — Nuke option on main installer screen

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Eric Andrade

cli-installer/bin/cli.js

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 const { detectTools, getInstallInstructions } = require('../lib/detector');
-const { promptPlatforms, promptScope, setupEscapeHandler } = require('../lib/interactive');
+const { promptPlatforms, promptScope, promptAction, setupEscapeHandler } = require('../lib/interactive');
 const { setupCleanupHandler } = require('../lib/cleanup');
 const { installCopilotSkills } = require('../lib/copilot');
 const { installClaudeSkills } = require('../lib/claude');
@@ -324,7 +324,8 @@ async function nuclearUninstall(quiet) {
   const home = os.homedir();
   const localDirs = getLocalProjectSkillDirs(process.cwd());
   const allPlatformDirs = [
-    { name: 'GitHub Copilot', dir: path.join(home, '.github', 'skills') },
+    { name: 'GitHub Copilot',        dir: path.join(home, '.copilot', 'skills') },
+    { name: 'GitHub Copilot (legacy)', dir: path.join(home, '.github', 'skills') },
     { name: 'Claude Code',    dir: path.join(home, '.claude', 'skills') },
     { name: 'Codex',          dir: path.join(home, '.codex', 'skills') },
     { name: 'OpenCode',       dir: path.join(home, '.agent', 'skills') },
@@ -372,7 +373,7 @@ async function runNuclearFlow(quiet) {
 
   console.log('\n' + chalk.bgRed.white.bold('  ☢️  NUCLEAR UNINSTALL — THIS CANNOT BE UNDONE  ') + '\n');
   console.log(chalk.red('  This will delete ALL skill folders from ALL AI platforms:\n'));
-  console.log(chalk.dim('    ~/.github/skills/              (GitHub Copilot)'));
+  console.log(chalk.dim('    ~/.copilot/skills/              (GitHub Copilot)'));
   console.log(chalk.dim('    ~/.claude/skills/              (Claude Code)'));
   console.log(chalk.dim('    ~/.codex/skills/               (OpenAI Codex)'));
   console.log(chalk.dim('    ~/.agent/skills/               (OpenCode)'));
@@ -894,6 +895,14 @@ async function main() {
       process.exit(1);
     }
 
+    if (!skipPrompt) {
+      const action = await promptAction();
+      if (action === 'nuke') {
+        await runNuclearFlow(quiet);
+        return;
+      }
+    }
+
     let scope = scopeFlag;
     if (!scope && !skipPrompt) {
       scope = await promptScope();

cli-installer/lib/copilot.js

@@ -1,8 +1,25 @@
 const fs = require('fs-extra');
 const path = require('path');
+const os = require('os');
 const chalk = require('chalk');
 const { getUserSkillsPath, isValidSkillName, assertSafePath } = require('./utils/path-resolver');
 
+const LEGACY_COPILOT_SKILLS_DIR = path.join(os.homedir(), '.github', 'skills');
+
+async function migrateLegacySkills(quiet) {
+  if (!fs.existsSync(LEGACY_COPILOT_SKILLS_DIR)) return;
+  const entries = (await fs.readdir(LEGACY_COPILOT_SKILLS_DIR)).filter(e =>
+    fs.existsSync(path.join(LEGACY_COPILOT_SKILLS_DIR, e, 'SKILL.md'))
+  );
+  if (entries.length === 0) return;
+  for (const entry of entries) {
+    await fs.remove(path.join(LEGACY_COPILOT_SKILLS_DIR, entry));
+  }
+  if (!quiet) {
+    console.log(chalk.dim(`  ↩️  Cleaned ${entries.length} skill(s) from old location ~/.github/skills/ (now using ~/.copilot/skills/)`));
+  }
+}
+
 /**
  * Install skills for GitHub Copilot CLI.
  * @param {string} cacheDir - Path to cached skills dir (~/.claude-superskills/cache/{v}/skills/)
@@ -13,6 +30,7 @@ const { getUserSkillsPath, isValidSkillName, assertSafePath } = require('./utils
  */
 async function installCopilotSkills(cacheDir, skills = null, quiet = false, targetDirOverride = null, label = 'Copilot') {
   const targetDir = targetDirOverride || getUserSkillsPath('copilot');
+  await migrateLegacySkills(quiet);
   await fs.ensureDir(targetDir);
 
   const availableSkills = (await fs.readdir(cacheDir)).filter(f =>

cli-installer/lib/interactive.js

@@ -48,6 +48,31 @@ async function confirmCancel() {
   }
 }
 
+/**
+ * Ask user to choose the main action: install skills or nuke.
+ * @returns {Promise<'install'|'nuke'>}
+ */
+async function promptAction() {
+  const { action } = await inquirer.prompt([{
+    type: 'list',
+    name: 'action',
+    message: 'What would you like to do?',
+    choices: [
+      {
+        name: 'Install / Update skills',
+        value: 'install'
+      },
+      new inquirer.Separator(),
+      {
+        name: chalk.red('☢️  Nuke   — Remove ALL skills from ALL platforms'),
+        value: 'nuke'
+      }
+    ],
+    default: 'install'
+  }]);
+  return action;
+}
+
 /**
  * Ask user to choose install scope: global (~/.<platform>/skills/) or local (./<platform>/skills/).
  * @returns {Promise<'global'|'local'>}
@@ -188,4 +213,4 @@ async function promptPlatforms(detected, options = {}) {
   return answers.platforms;
 }
 
-module.exports = { promptPlatforms, promptScope, setupEscapeHandler, confirmCancel };
+module.exports = { promptPlatforms, promptScope, promptAction, setupEscapeHandler, confirmCancel };

cli-installer/lib/utils/path-resolver.js

@@ -39,7 +39,7 @@ function getUserSkillsPath(platform) {
 
   const platformDirs = {
     'codex':       path.join(home, '.codex', 'skills'),
-    'copilot':     path.join(home, '.github', 'skills'),
+    'copilot':     path.join(home, '.copilot', 'skills'),
     'claude':      path.join(home, '.claude', 'skills'),
     'opencode':    path.join(home, '.agent', 'skills'),
     'gemini':      path.join(home, '.gemini', 'skills'),
@@ -62,7 +62,7 @@ function getUserSkillsPath(platform) {
 function getLocalSkillsPath(platform, projectRoot = process.cwd()) {
   const platformDirs = {
     'codex':       path.join(projectRoot, '.codex', 'skills'),
-    'copilot':     path.join(projectRoot, '.github', 'skills'),
+    'copilot':     path.join(projectRoot, '.copilot', 'skills'),
     'claude':      path.join(projectRoot, '.claude', 'skills'),
     'opencode':    path.join(projectRoot, '.agent', 'skills'),
     'gemini':      path.join(projectRoot, '.gemini', 'skills'),