docs(mri): document leaderboard jobs property

[RapidPoseidon]

What

Expands the documentation for the RapidataLeaderboard.jobs property added in #651.

• docs/mri.md — the "Retrieving Results" section now explains that each evaluation runs as a job and shows how to iterate leaderboard.jobs, with a pointer to the advanced guide.
• docs/mri_advanced.md — adds an "Accessing the Underlying Jobs" section covering how to reach the raw comparison results behind the standings via job.get_results() / .to_pandas(), and notes that runs without an associated job are skipped.

Notes

• uv run --group docs mkdocs build succeeds (remaining warnings are pre-existing and unrelated).
• Docs-only change.

🔗 Session: https://session-ed5c819e.poseidon.rapidata.internal/

[claude]

Review

Docs-only PR expanding documentation for the RapidataLeaderboard.jobs property (added in #651) — a short mention in docs/mri.md plus a full "Accessing the Underlying Jobs" section in docs/mri_advanced.md.

I cross-checked every technical claim in the new prose/code samples against the actual implementation:

• RapidataLeaderboard.jobs (rapidata_leaderboard.py) returns list[RapidataJob], sorted via sort=["-created_at"] — confirms the "most recent first" claim.
• Runs without a job_id are filtered out (if run.job_id is not None) — confirms the "runs without an associated job are skipped" claim.
• RapidataJob.name, .get_status(), .view(), and .get_results() -> RapidataResults all exist as documented.
• RapidataResults.to_pandas() exists, matching the advanced-guide example.
• get_status() == "Completed" is a real, exact enum value (AudienceJobState.COMPLETED = 'Completed'), so the if job.get_status() != "Completed": continue snippet is correct.
• The mri_advanced.md#accessing-the-underlying-jobs anchor link matches the new heading's generated slug.
• Code fences in mri.md are balanced after splitting the single block into prose + two blocks.

No correctness, security, or convention issues found — nothing to flag. Nice, focused addition that follows the CLAUDE.md guidance to stay concise and avoid repeating information (the intro page links out to the advanced page rather than duplicating detail).