chore: update README and CLI usage for cursor_gen, version bump to 1.0.1

- Changed CLI usage instructions from `dart run cursor_gen` to `cursor_gen` for global activation.
- Updated project-brief.yaml example and README to reflect new command usage.
- Added app_context section in project-brief.yaml for theme variants and RBAC roles.
- Fixed bundled template resolution for local and global installs to prevent 'Template not found' errors.
- Version bump to 1.0.1 with corresponding updates in CHANGELOG and pubspec.yaml.

flutter-cursor-templates/generator/templates/skills/generate-api-client/SKILL.md.tmpl

@@ -0,0 +1,16 @@
+# Generate API Client — {{PROJECT_NAME}}
+
+Generates type-safe API clients from {{API_DOCS_FORMAT}} spec at `{{API_DOCS_PATH}}`.
+
+## Usage
+```
+Generate API client for [endpoint or resource name]
+```
+
+## Generated files
+1. **DTO** (`data/models/[resource]_dto.dart`) — request/response models with json_serializable
+2. **DataSource** (`data/datasources/[resource]_remote_datasource.dart`) — Dio calls with error handling
+3. **Repository impl** (`data/repositories/[resource]_repository_impl.dart`)
+
+## After generation
+Run: `dart run build_runner build --delete-conflicting-outputs`