fix(context): filter non-dict items in load_relationships

[Bartok9]

Summary

load_relationships now returns only mapping items so its list[dict] contract matches loaders that already filter (e.g. models/views).

Motivation

Maintainer note on closed #2547: the leak is in the loader (context.py), not MCP consumers. #2608 covers describe_model container-type; this is the missing item filter.

Test plan

• test_load_relationships_skips_non_dict_items
• test_load_relationships_non_list_relationships_key

Summary by CodeRabbit

• Bug Fixes

  • Improved handling of relationship configuration files with invalid or unexpected formats.
  • Invalid entries are now ignored, preventing malformed data from affecting subsequent processing.

• Tests

  • Added coverage for non-list relationship data and lists containing invalid entries.

[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 Plus

Run ID: 9f4d0a6d-fe6c-442a-96c7-d129544447cc

📥 Commits

Reviewing files that changed from the base of the PR and between 99f1dbd and 0245eba.

📒 Files selected for processing (2)

• core/wren/src/wren/context.py
• core/wren/tests/unit/test_context.py

---

Walkthrough

load_relationships() now validates the YAML structure and returns only dictionary relationship entries. Unit tests cover non-dictionary list items and non-list relationships values.

Changes

Relationship YAML validation

Layer / File(s)	Summary
Validate and test relationship loading core/wren/src/wren/context.py, core/wren/tests/unit/test_context.py	load_relationships() validates the YAML root and relationships field, filters non-dictionary entries, and tests malformed inputs.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• Canner/WrenAI#2608: Adds related guards for malformed relationship entries in describe_model.

Suggested reviewers: goldmedal

Poem

I nibbled the YAML, both tidy and bright,
And skipped little scalars that weren’t quite right.
Dicts hop through the loader in a neat little stream,
While bad shapes depart like a rabbit’s daydream.
🐇 Tests now keep relationships clean!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise and accurately describes the primary change in load_relationships.
Description check	✅ Passed	The description includes summary, motivation, and test plan, which covers the core template requirements.
Linked Issues check	✅ Passed	The change filters non-dict relationship entries in the loader, matching the relevant objective in #2547.
Out of Scope Changes check	✅ Passed	The patch stays within the stated loader fix and its tests, with no unrelated behavior changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}