Return providers as list & conditionally enable remote based on installed deps.

[dmaniloff]

Summary by Sourcery

Return providers as a list and enable the remote evaluation provider only when its dependencies are available, backed by updated configuration, shared constants, demo notebooks, documentation, and tests.

New Features:

• Return multiple provider specifications as a list from get_provider_spec
• Conditionally enable remote provider only when optional dependencies are installed

Enhancements:

• Introduce constants for provider IDs and types
• Simplify distribution configuration to a single run.yaml using environment-based conditional provider inclusion
• Update demo notebooks to use provider list, pandas comparison, and unified dataset/benchmark identifiers
• Refactor provider modules to use shared constants and import inline implementation by default

Build:

• Bump project version to 0.4.1

Documentation:

• Revise README to clarify inline vs remote provider installation and usage

Tests:

• Update integration tests to use new provider ID constants

[sourcery-ai]

Hey there - I've reviewed your changes and they look great!

Prompt for AI Agents

Please address the comments from this code review:

## Individual Comments

### Comment 1
<location> `README.md:42` </location>
<code_context>
     ```
 - The sample LS distributions (one for inline and one for remote provider) is a simple LS distribution that uses Ollama for inference and embeddings. See the provider-specific sections below for setup and run commands.

-### Remote provider (default)
</code_context>

<issue_to_address>
**issue (typo):** Grammatical error: 'is' should be 'are' when referring to multiple distributions.

The sentence should use 'are' instead of 'is' to match the plural subject.

```suggestion
- The sample LS distributions (one for inline and one for remote provider) are simple LS distributions that use Ollama for inference and embeddings. See the provider-specific sections below for setup and run commands.
```
</issue_to_address>

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[sourcery-ai]

issue (typo): Grammatical error: 'is' should be 'are' when referring to multiple distributions.

The sentence should use 'are' instead of 'is' to match the plural subject.

Suggested change

	- The sample LS distributions (one for inline and one for remote provider) is a simple LS distribution that uses Ollama for inference and embeddings. See the provider-specific sections below for setup and run commands.
	- The sample LS distributions (one for inline and one for remote provider) are simple LS distributions that use Ollama for inference and embeddings. See the provider-specific sections below for setup and run commands.