fix(ai): omp commit fails with HTTP 400 on OpenAI-compatible endpoints when reasoning enabled (#577)

* fix(ai): Added developer role support for reasoning-enabled OpenAI models

- Added supportsDeveloperRole function to check developer role support based on provider and base URL.
- Updated system prompt role logic to use developer role only when supported.
- Improved reasoning content handling with provider-specific role enforcement.

* feat(ai): Added developer role support for reasoning models with provider fallback

- Exported supportsDeveloperRole function to enable cross-provider usage.
- Updated Azure provider to check developer role support before assignment.
- Implemented system role fallback when developer role is unsupported.
- Fixed role assignment to use developer role when supported.

* feat(ai): added support for Azure OpenAI inference endpoint

- Allow Azure OpenAI Inference endpoint (azure.com/openai) via `includes()` matching on baseUrl, enabling broader Azure-compatibility.

* test: add test file for developer role handler in OpenAI responses provider

* fix(ai): fixed developer role validation to reject custom base URLs

- Changed supportsDeveloperRole to use base URL pattern matching instead of provider short-circuit.
- Added tests to verify developer role support returns false for custom proxy base URLs.

* fix(ai): Updated GitHub Copilot endpoint detection

- Expands GitHub Copilot endpoint detection to support multiple GitHub Copilot enterprise and copilot-api domains.
- Adds 3 new test scenarios wrapping unsupported/correct patterns for github-copilot provider endpoints.

* chore(ci): Add *.tmp pattern in OS section

- Adds *.tmp to ignore all temporary files with .tmp extension
- Groups with other OS temp files (.DS_Store)

* docs(ai): Consolidate changelog entry for developer role fix

* feat(ai/providers): Added baseUrl resolution support across OpenAI providers

- Resolve baseUrl before buildParams calls in azure-openai-responses.ts for correct system role logic.
- Add baseUrl resolution to openai-responses.ts and openai-completions.ts.
- Add optional resolvedBaseUrl to getCompat function for better compatibility detection.
- Update supportsDeveloperRole to accept both Model objects and baseUrl strings.

.gitignore

@@ -25,6 +25,7 @@ target/
 *~
 
 # OS
+*.tmp
 .DS_Store
 
 # Logs & profiling