diff --git a/test/test-installation-components.js b/test/test-installation-components.js
index befdf6e74..1b09178ed 100644
--- a/test/test-installation-components.js
+++ b/test/test-installation-components.js
@@ -726,6 +726,15 @@ async function runTests() {
 
     assert(!(await fs.pathExists(path.join(tempProjectDir13, '.roo', 'commands'))), 'Roo setup removes legacy commands dir');
 
+    // Reinstall/upgrade: run setup again over existing skills output
+    const result13b = await ideManager13.setup('roo', tempProjectDir13, installedBmadDir13, {
+      silent: true,
+      selectedModules: ['bmm'],
+    });
+
+    assert(result13b.success === true, 'Roo reinstall/upgrade succeeds over existing skills');
+    assert(await fs.pathExists(skillFile13), 'Roo reinstall preserves SKILL.md output');
+
     await fs.remove(tempProjectDir13);
     await fs.remove(installedBmadDir13);
   } catch (error) {
@@ -802,6 +811,70 @@ async function runTests() {
 
   console.log('');
 
+  // ============================================================
+  // Test 17: GitHub Copilot Native Skills Install
+  // ============================================================
+  console.log(`${colors.yellow}Test Suite 17: GitHub Copilot Native Skills${colors.reset}\n`);
+
+  try {
+    clearCache();
+    const platformCodes17 = await loadPlatformCodes();
+    const copilotInstaller = platformCodes17.platforms['github-copilot']?.installer;
+
+    assert(copilotInstaller?.target_dir === '.github/skills', 'GitHub Copilot target_dir uses native skills path');
+
+    assert(copilotInstaller?.skill_format === true, 'GitHub Copilot installer enables native skill output');
+
+    assert(
+      Array.isArray(copilotInstaller?.legacy_targets) && copilotInstaller.legacy_targets.includes('.github/agents'),
+      'GitHub Copilot installer cleans legacy agents output',
+    );
+
+    assert(
+      Array.isArray(copilotInstaller?.legacy_targets) && copilotInstaller.legacy_targets.includes('.github/prompts'),
+      'GitHub Copilot installer cleans legacy prompts output',
+    );
+
+    const tempProjectDir17 = await fs.mkdtemp(path.join(os.tmpdir(), 'bmad-copilot-test-'));
+    const installedBmadDir17 = await createTestBmadFixture();
+
+    // Create legacy .github/agents/ and .github/prompts/ files
+    const legacyAgentsDir17 = path.join(tempProjectDir17, '.github', 'agents');
+    const legacyPromptsDir17 = path.join(tempProjectDir17, '.github', 'prompts');
+    await fs.ensureDir(legacyAgentsDir17);
+    await fs.ensureDir(legacyPromptsDir17);
+    await fs.writeFile(path.join(legacyAgentsDir17, 'bmad-legacy.agent.md'), 'legacy agent\n');
+    await fs.writeFile(path.join(legacyPromptsDir17, 'bmad-legacy.prompt.md'), 'legacy prompt\n');
+
+    const ideManager17 = new IdeManager();
+    await ideManager17.ensureInitialized();
+    const result17 = await ideManager17.setup('github-copilot', tempProjectDir17, installedBmadDir17, {
+      silent: true,
+      selectedModules: ['bmm'],
+    });
+
+    assert(result17.success === true, 'GitHub Copilot setup succeeds against temp project');
+
+    const skillFile17 = path.join(tempProjectDir17, '.github', 'skills', 'bmad-master', 'SKILL.md');
+    assert(await fs.pathExists(skillFile17), 'GitHub Copilot install writes SKILL.md directory output');
+
+    // Verify name frontmatter matches directory name
+    const skillContent17 = await fs.readFile(skillFile17, 'utf8');
+    const nameMatch17 = skillContent17.match(/^name:\s*(.+)$/m);
+    assert(nameMatch17 && nameMatch17[1].trim() === 'bmad-master', 'GitHub Copilot skill name frontmatter matches directory name exactly');
+
+    assert(!(await fs.pathExists(legacyAgentsDir17)), 'GitHub Copilot setup removes legacy agents dir');
+
+    assert(!(await fs.pathExists(legacyPromptsDir17)), 'GitHub Copilot setup removes legacy prompts dir');
+
+    await fs.remove(tempProjectDir17);
+    await fs.remove(installedBmadDir17);
+  } catch (error) {
+    assert(false, 'GitHub Copilot native skills migration test succeeds', error.message);
+  }
+
+  console.log('');
+
   // ============================================================
   // Summary
   // ============================================================
diff --git a/tools/docs/native-skills-migration-checklist.md b/tools/docs/native-skills-migration-checklist.md
index f1c43db2a..57302589b 100644
--- a/tools/docs/native-skills-migration-checklist.md
+++ b/tools/docs/native-skills-migration-checklist.md
@@ -48,7 +48,7 @@ Support assumption: full Agent Skills support. BMAD currently installs legacy co
 - [x] Test reinstall/upgrade from legacy command output
 - [x] Confirm no ancestor conflict protection is needed because a child workspace surfaced child `.cursor/skills` entries but not a parent-only skill during manual verification
 - [x] Implement/extend automated tests
-- [ ] Commit
+- [x] Commit
 
 ## Windsurf
 
@@ -167,7 +167,7 @@ Support assumption: full Agent Skills support. BMAD currently installs commands
 - [x] Implement installer migration to native skills output
 - [x] Add legacy cleanup for `.roo/commands`
 - [x] Test fresh install — 43 skills installed, verified in Roo Code v3.51
-- [ ] Test reinstall/upgrade from legacy command output
+- [x] Test reinstall/upgrade from legacy command output
 - [x] Confirm no ancestor conflict protection is needed because manual Roo Code v3.51 verification showed child-local `child-only` skill loaded while parent-only skill was not inherited
 - [x] Implement/extend automated tests — 7 assertions in test suite 13
 - [x] Commit
@@ -193,13 +193,13 @@ Support assumption: full Agent Skills support. BMAD currently uses a custom inst
 
 **Install:** VS Code extension `GitHub.copilot` — search "GitHub Copilot" in Extensions or `code --install-extension GitHub.copilot`
 
-- [ ] Confirm GitHub Copilot native skills path and whether `.github/agents` remains necessary as a compatibility layer
+- [x] Confirm GitHub Copilot native skills path is `.github/skills/{skill-name}/SKILL.md` — also reads `.claude/skills/` automatically
 - [ ] Design the migration away from the custom prompt/agent installer model
 - [ ] Implement native skills output, ideally with shared config-driven code where practical
 - [ ] Add legacy cleanup for `.github/agents`, `.github/prompts`, and any BMAD-owned Copilot instruction file behavior that should be retired
 - [ ] Test fresh install
 - [ ] Test reinstall/upgrade from legacy custom installer output
-- [ ] Confirm ancestor conflict protection where applicable
+- [x] Confirm no ancestor conflict protection is needed because manual Copilot verification showed child-local `child-only` skill loaded while parent-only skill was not inherited
 - [ ] Implement/extend automated tests
 - [ ] Commit