Add heart rate and power zone endpoints

[dragilla]

Summary

• add get_heart_rate_zones() for configured heart-rate profiles
• add get_power_zones() for power zones across all supported sports
• add get_power_zones_for_sport() with normalized and validated Garmin sport keys
• expose the methods in the demo and update API coverage counts

Validation

• pytest -q — 152 passed, 2 skipped
• ruff check .
• isort --check-only . --skip-gitignore
• black -l 88 --check --diff .
• mypy garminconnect tests
• codespell README.md demo.py garminconnect/__init__.py tests/test_garmin_unit.py

Summary by CodeRabbit

• New Features

  • Added access to configured heart-rate zones across sport profiles.
  • Added access to power zones for all supported sports or a selected sport.
  • Expanded the demonstration menu with options for viewing heart-rate, power, and cycling power zones.
  • Added input validation and normalization for sport selections.

• Documentation

  • Updated API coverage statistics to reflect 137+ methods, including 15 advanced health metrics.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: 809cc0cb-c2be-4478-b553-46a186d80667

📥 Commits

Reviewing files that changed from the base of the PR and between 2ae0eb5 and 7a1ce47.

📒 Files selected for processing (4)

• README.md
• demo.py
• garminconnect/__init__.py
• tests/test_garmin_unit.py

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Walkthrough

Adds Garmin heart-rate and power-zone API methods, exposes them in the demo CLI, tests endpoint and validation behavior, and updates README API coverage statistics.

Changes

Heart-rate and power-zone API support

Layer / File(s)	Summary
Zone endpoints and accessors garminconnect/__init__.py, README.md	Adds biometric zone endpoints and accessors for heart-rate, all-sport power, and sport-specific power zones; updates documented API counts.
Demo menu integration demo.py	Adds three Advanced Health Metrics menu options and dispatches them to the corresponding Garmin methods.
Endpoint and input validation tests tests/test_garmin_unit.py	Verifies endpoint paths, payload passthrough, sport normalization, and invalid sport validation.

Estimated code review effort: 2 (Simple) | ~10 minutes

Sequence Diagram(s)

sequenceDiagram
  participant Demo as execute_api_call
  participant Garmin as Garmin
  participant API as connectapi
  Demo->>Garmin: Invoke zone accessor
  Garmin->>API: Request zone endpoint
  API-->>Garmin: Return zone payload
  Garmin-->>Demo: Display payload

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Possibly related PRs

• cyberjunky/python-garminconnect#351: Introduced the test module extended by these zone API tests.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: adding heart rate and power zone endpoints.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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