fix: remove ConfigurableRuntimeFactory, read settings from schema.metadata

[Chibionos]

Summary

This PR fixes the design introduced in PR #1053 by removing ConfigurableRuntimeFactory and reading agent settings from schema.metadata instead.

Problem with PR #1053

The previous implementation:

• ❌ Wrapped the runtime factory unnecessarily
• ❌ Deserialized agent.json in the CLI layer
• ❌ Created temporary modified JSON files for settings overrides
• ❌ Required cleanup of temp files

Per feedback from @cristipufu:

"it breaks the design - we're deserializing the agent json in the core library, wrapping the factory, and disposing it. Pass the model settings via get_schema() from the low code library and then just use/override those settings, no need to wrap the factory, deserialize the json and all that"

The correct architecture

┌─────────────────────────────────────────┐
│     uipath-agents-python (low-code)     │
│                                         │
│  get_schema() returns:                  │
│    schema.metadata = {                  │
│      "settings": {                      │
│        "model": "gpt-4o",               │
│        "temperature": 0.7,              │
│        ...                              │
│      }                                  │
│    }                                    │
└─────────────────────────────────────────┘
                    │
                    ▼
┌─────────────────────────────────────────┐
│       uipath-python (this repo)         │
│                                         │
│  _get_agent_model() reads from:         │
│    schema.metadata["settings"]["model"] │
│                                         │
│  ✓ No factory wrapper                   │
│  ✓ No temp files                        │
│  ✓ No JSON deserialization in CLI       │
└─────────────────────────────────────────┘

Changes

• Removed: _configurable_factory.py - factory wrapper that created temp files
• Removed: test_configurable_factory.py - tests for removed class
• Updated: _runtime.py:
  • _get_agent_model() now reads from schema.metadata["settings"]["model"]
  • Removed factory wrapper in __init__
  • Removed temp file cleanup in __aexit__
  • Renamed _configure_model_settings_override() to _get_model_settings_override()
• Updated: pyproject.toml - uipath-runtime>=0.3.4 (includes metadata field)

Related PR

• uipath-agents-python: https://github.com/UiPath/uipath-agents-python/pull/68

Test plan

• All 1317 tests pass
• Linter passes
• E2E testing with both repos

🤖 Generated with Claude Code

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Honor model settings override when creating runtime

The execute() path now constructs the runtime directly (factory.new_runtime at lines 286‑289) but no longer applies the requested model settings override. _get_model_settings_override() (lines 554‑601) is never invoked, so the --model-settings-id option wired through cli_eval is a no-op and evaluation runs always use the agent’s default settings. Users selecting a non‑default model/temperature in the evaluation set will silently execute against the wrong model.

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[Chibionos]

handled by @mathurk's PR