fix(pydantic): skip non-dict models in list_models

[Bartok9]

Summary

• _run_list_models assumed every models[] element was a dict with name/columns/properties.
• Skip non-dict rows and nameless models; coerce non-list columns and non-dict properties.

Motivation

Malformed MDL fragments should not AttributeError wren_list_models mid-comprehension. Apache-2.0: sdk/**.

Verification

Logic exercised with an in-process fixture reproducing non-dict/name-less rows (ok model kept with column_count 0). Full pydantic-ai env not on this host; unit test added for CI:

• tests/unit/test_tools_runtime.py::test_wren_list_models_skips_non_dict_and_nameless

Test plan

• Local behavioral proof + regression test
• CI green

Summary by CodeRabbit

• Bug Fixes

  • Improved model listing resilience when metadata is incomplete or malformed.
  • Invalid or unnamed models are now skipped instead of causing failures.
  • Missing or incorrectly formatted fields receive safe default values.

• Tests

  • Added coverage for partially invalid model metadata and expected fallback behavior.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 95c32934-e8a6-4e2a-a47f-c1c102581203

📥 Commits

Reviewing files that changed from the base of the PR and between 243eec8 and c6a44fc.

📒 Files selected for processing (2)

• sdk/wren-pydantic/src/wren_pydantic/_tools.py
• sdk/wren-pydantic/tests/unit/test_tools_runtime.py

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Walkthrough

The model-listing runtime path now validates manifest structure, skips invalid or nameless entries, normalizes field types, and safely derives descriptions. A unit test covers malformed entries and default values.

Changes

Model manifest parsing

Layer / File(s)	Summary
Defensive model listing sdk/wren-pydantic/src/wren_pydantic/_tools.py, sdk/wren-pydantic/tests/unit/test_tools_runtime.py	_run_list_models validates and normalizes manifest entries, while the runtime test verifies invalid entries are skipped and missing values receive safe defaults.

Estimated code review effort: 2 (Simple) | ~10 minutes

Poem

A bunny found a crooked chart,
And checked each model part by part.
Bad names hopped away from sight,
Safe defaults made the list just right.
“Now parse with care!” it cheered tonight.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main change: skipping non-dict models in list_models.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[goldmedal]

Thanks @Bartok9