fix: address Copilot PR review comments (round 2)

- Fix init --preset error masking: distinguish "not found" from real errors
- Fix bash resolve_template: skip hidden dirs in extensions (match Python/PS)
- Fix temp dir leaks in tests: use temp_dir fixture instead of mkdtemp
- Fix self-test catalog entry: add note that it's local-only (no download_url)
- Fix Windows path issue in resolve_with_source: use Path.relative_to()
- Fix skill restore path: use project's .specify/templates/commands/ not source tree
- Add encoding="utf-8" to all file read/write in agents.py
- Update test to set up core command templates for skill restoration

tests/test_presets.py

@@ -499,15 +499,15 @@ class TestPresetManager:
         manager = PresetManager(project_dir)
         assert manager.get_pack("nonexistent") is None
 
-    def test_check_compatibility_valid(self, pack_dir):
+    def test_check_compatibility_valid(self, pack_dir, temp_dir):
         """Test compatibility check with valid version."""
-        manager = PresetManager(Path(tempfile.mkdtemp()))
+        manager = PresetManager(temp_dir)
         manifest = PresetManifest(pack_dir / "preset.yml")
         assert manager.check_compatibility(manifest, "0.1.5") is True
 
-    def test_check_compatibility_invalid(self, pack_dir):
+    def test_check_compatibility_invalid(self, pack_dir, temp_dir):
         """Test compatibility check with invalid specifier."""
-        manager = PresetManager(Path(tempfile.mkdtemp()))
+        manager = PresetManager(temp_dir)
         manifest = PresetManifest(pack_dir / "preset.yml")
         manifest.data["requires"]["speckit_version"] = "not-a-specifier"
         with pytest.raises(PresetCompatibilityError, match="Invalid version specifier"):
@@ -1678,6 +1678,11 @@ class TestPresetSkills:
 
         (project_dir / ".claude" / "commands").mkdir(parents=True, exist_ok=True)
 
+        # Set up core command template in the project so restoration works
+        core_cmds = project_dir / ".specify" / "templates" / "commands"
+        core_cmds.mkdir(parents=True, exist_ok=True)
+        (core_cmds / "specify.md").write_text("---\ndescription: Core specify command\n---\n\nCore specify body\n")
+
         manager = PresetManager(project_dir)
         SELF_TEST_DIR = Path(__file__).parent.parent / "presets" / "self-test"
         manager.install_from_directory(SELF_TEST_DIR, "0.1.5")