Add collector for Tunbridge Wells Borough Council

[github-actions]

Summary

This PR adds a new bin collection data collector for Tunbridge Wells Borough Council.

• Implements ICollector interface
• Adds integration tests
• Successfully tested with example postcode from issue

Closes #89

Test Summary

==================== Test Summary ====================

--------------------- Collector ----------------------

Tunbridge Wells Borough Council

------------------- Addresses (18) -------------------

- 1 Lurkins Rise, Goudhurst, Cranbrook, TN17 1ED, TN17 1ED, 100061189079
- 2 Lurkins Rise, Goudhurst, Cranbrook, TN17 1ED, TN17 1ED, 100061189080
- 3 Lurkins Rise, Goudhurst, Cranbrook, TN17 1ED, TN17 1ED, 100061189081
- 4 Lurkins Rise, Goudhurst, Cranbrook, TN17 1ED, TN17 1ED, 100061189082
- 5 Lurkins Rise, Goudhurst, Cranbrook, TN17 1ED, TN17 1ED, 100061189083
- ...

-------------------- Bin Days (7) --------------------

- 07/01/2026 (3 bins):
 - Recycling Bin
 - Paper Recycling
 - Food Waste

- 13/01/2026 (2 bins):
 - General Waste
 - Food Waste

- 14/01/2026 (1 bins):
 - Garden Waste

- 20/01/2026 (3 bins):
 - Recycling Bin
 - Paper Recycling
 - Food Waste

- 27/01/2026 (2 bins):
 - General Waste
 - Food Waste

- 28/01/2026 (1 bins):
 - Garden Waste

- 03/02/2026 (3 bins):
 - Recycling Bin
 - Paper Recycling
 - Food Waste

---

Generated automatically by Codex CLI

[BadgerHobbs]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces a new collector for Tunbridge Wells Borough Council. The implementation correctly follows the multi-step process required by the council's API, using AchieveForms. The code is well-structured and includes integration tests as required.

My review focuses on improving adherence to the repository's C# style guide and enhancing maintainability. I've pointed out several places where trailing commas are missing in object initializers, which is a requirement of the style guide. I also suggest using a named capture group for regex matching to improve readability. Additionally, I've identified an opportunity to reduce code duplication by extracting the creation of the initial client-side request into a helper method.

Overall, this is a solid contribution. Addressing these minor points will make the code even cleaner and more consistent with the project's standards.