Improve API endpoint error handling

[sylwia-budzynska]

This PR will improve error handling when a user supplies an unsupported API endpoint to display supported endpoints.

E.g. if AI_API_ENDPOINT is:
.env

AI_API_ENDPOINT="models.github.ai"

The error the agent will show:

$ hatch run main -p seclab_taskflow_agent.personalities.assistant 'explain modems to me please'
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/workspaces/seclab-taskflow-agent/src/seclab_taskflow_agent/__main__.py", line 18, in <module>
    from .agent import DEFAULT_MODEL, TaskRunHooks, TaskAgentHooks
  File "/workspaces/seclab-taskflow-agent/src/seclab_taskflow_agent/agent.py", line 30, in <module>
    raise ValueError(f"Unsupported Model Endpoint: {api_endpoint}\n"
ValueError: Unsupported Model Endpoint: models.github.ai
Supported endpoints: ['https://models.github.ai/inference', 'https://api.githubcopilot.com']

[sylwia-budzynska]

Suggested change

	CODEQL_DBS_BASE_PATH="/app/my_data/codeql_databases"
	CODEQL_DBS_BASE_PATH="/app/data/codeql_databases"

Should we change it to data since we removed my_?

[Copilot]

Pull request overview

This PR improves error handling when users supply an unsupported API endpoint by adding a new to_url() method to the AI_API_ENDPOINT_ENUM class and updating error messages throughout the codebase to display supported endpoints in their full URL format.

Key changes:

• Added to_url() method to AI_API_ENDPOINT_ENUM to convert endpoint values to their full URLs
• Enhanced error messages in three locations to list supported endpoints when an unsupported endpoint is provided
• Updated README.md documentation to explicitly show the AI_API_ENDPOINT configuration option

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
src/seclab_taskflow_agent/capi.py	Added to_url() method to enum class and updated error messages in list_capi_models() and supports_tool_calls() to display supported endpoints
src/seclab_taskflow_agent/agent.py	Updated error message in the default model initialization to display supported endpoints
README.md	Added AI_API_ENDPOINT configuration example and updated database path example

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.

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