fix: replace docs/samples with git-ignored private-samples directory

Move sample API responses to docs/private-samples/ (git-ignored) to
prevent PII exposure when the repository is made public. Update all
references in tests, documentation, and linting configuration.

Replace shields.io dynamic license badge with a static badge that
works regardless of repository visibility.

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

Author: mikejhill

.gitignore

@@ -219,3 +219,6 @@ __marimo__/
 
 # HTTP Archive files (may contain credentials)
 *.har
+
+# Private sample data (contains real API responses)
+docs/private-samples/

.markdownlint-cli2.yaml

@@ -17,6 +17,6 @@ config:
 
 ignores:
   - "CHANGELOG.md"
-  - "docs/samples/**"
+  - "docs/private-samples/**"
   - ".venv/**"
   - "node_modules/**"

README.md

@@ -2,7 +2,7 @@
 
 [![CI](https://github.com/mikejhill/rouvy-api/actions/workflows/ci.yml/badge.svg)](https://github.com/mikejhill/rouvy-api/actions/workflows/ci.yml)
 [![Release](https://github.com/mikejhill/rouvy-api/actions/workflows/release.yml/badge.svg)](https://github.com/mikejhill/rouvy-api/actions/workflows/release.yml)
-[![License](https://img.shields.io/github/license/mikejhill/rouvy-api)](LICENSE)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
 
 A pure Python client library for the Rouvy indoor cycling platform with a CLI tool and a native Home Assistant integration (HACS-compatible).
 
@@ -218,7 +218,7 @@ See `scripts/demo_parser.py` for comprehensive examples of parsing different end
 Comprehensive documentation and reference materials are in the `docs/` directory:
 
 - [**docs/architecture/turbo-stream.md**](docs/architecture/turbo-stream.md) - Detailed explanation of the turbo-stream format discovery and implementation
-- [**docs/samples/**](docs/samples/) - Sample API responses for reference
+- [**docs/private-samples/**](docs/private-samples/) - Sample API responses for reference (git-ignored, local only)
 
 ## Logging
 

docs/architecture/project-structure.md

@@ -42,7 +42,7 @@ rouvy-api/
 │   │   ├── project-structure.md  # This file
 │   │   └── turbo-stream.md     # Turbo-stream format analysis
 │   ├── examples/               # Usage examples
-│   └── samples/                # Sample API responses for reference
+│   └── private-samples/         # Sample API responses (git-ignored, local only)
 │
 ├── tests/                      # Unit and integration tests
 │

tests/test_models.py

@@ -19,7 +19,7 @@
     extract_user_profile_model,
 )
 
-SAMPLES_DIR = Path(__file__).resolve().parent.parent / "docs" / "samples"
+SAMPLES_DIR = Path(__file__).resolve().parent.parent / "docs" / "private-samples"
 
 
 def _has_samples() -> bool: