LoreCrawler: Dynamic retrieval of lore kernel reviews

[aditya-qti]

Is your feature request related to a problem? Please describe.
Traditional AI code reviewers often provide generic feedback that doesn't align with specific maintainer preferences or project conventions. Kernel maintainers have unique review styles, focus areas, and recurring concerns that are difficult to capture in static prompts.

Describe the solution you'd like
Retrieve relevant review examples from lore kernel and add them to the AiCodeReview prompt.

10-20 examples can be provided.

Note: Sometimes, review comments from a previous or the current series of the same patches can be retrieved - this
is a happy coincidence. The AI should be instructed not to use any author/reviewer names from these.

Design choices to consider
One-off call vs Agent tool with search flexibility or both!

If a lore search tool is being added, consider making tool_choice="required" for one of the initial iterations with this tool as the only one available.

Tests
Consider adding tests in tests/test_tools.py if a new agent tool is added.

[aditya-qti]

I would like to work on this issue. I would first like to try designing a deterministic lore search tool that ranks possible relevant review examples based on several heuristics such as:

• same touched files
• same symbols/functions in the diff
• ...
  I can think of which other heurisitics/ lei queries could be relevant, if you think this approach is good?

I plan to use this tool in my one-off call implementation

@ahmedbektic, I will add a help wanted tag if it's open for contribution.