Add CLAUDE.md and AGENTS.md repository instructions

[ronakice]

Summary: add repo-local CLAUDE instructions and AGENTS symlink.

Files changed:

• CLAUDE.md
• AGENTS.md

Testing: Not run (docs/symlink change only).

[lintool]

hey @ronakice can you describe the difference before/after? didn't Claude write the original version? What's changed?

[ronakice]

PR Comment Addressing Summary

Round: 1
Date: 2026-03-01

Addressed comments

File	Source	Verdict	Summary
N/A	N/A	NOT APPLICABLE	No unresolved review threads, no top-level review comments, and no inline PR comments were present.

CI failures fixed

• None in this pass.
• No checks are currently reported for this PR branch.

Verdict totals

• FIXED: 0
• ACKNOWLEDGED: 0
• WON'T FIX: 0
• NOT APPLICABLE: 1
• NEEDS HUMAN INPUT: 0

Deferred items / TODOs

• None.

Open NEEDS HUMAN INPUT items

• None.

[ronakice]

@lintool (AI reply) ACKNOWLEDGED — This PR is intentionally docs-only: it adds a new repo-local CLAUDE.md and an AGENTS.md symlink to it. There are no runtime code-path changes before/after; the change is to standardize contributor/agent instructions in-repo.

[ronakice]

@lintool I don't think this exists for pyserini