BAI-339 gitignore Claude Code local settings and worktree checkouts

[imranq2]

Summary

• .claude/settings.local.json and .claude/worktrees/ were showing up as untracked in git status — the former is a personal local override, the latter holds actual git worktree checkouts (each with its own .git pointer file) that should never be tracked in the parent repo.
• Adds both to .gitignore, matching the same pattern applied to baileyai.

Test plan

• git status no longer lists .claude/ as untracked.

[claude]

LGTM — straightforward .gitignore addition.

Extended reasoning...

Overview

The PR adds two entries to .gitignore: .claude/settings.local.json (a personal local override file) and .claude/worktrees/ (git worktree checkouts). This is the only change in the PR — no application code, configuration, or infrastructure is touched.

Security risks

None. Ignoring local Claude Code settings and worktree directories reduces the risk of accidentally committing personal/local state; it does not affect auth, PHI/PII handling, or any data path.

Level of scrutiny

Minimal scrutiny is appropriate here — this is a purely additive, mechanical change to a dotfile with no behavioral, architectural, or contract impact. It mirrors an existing pattern already applied in another repo (baileyai), so there is no novel decision to review.

Other factors

No tests are needed for a .gitignore change, and the PR's own manual test plan (confirming git status no longer lists .claude/ as untracked) is sufficient verification. No outstanding review comments exist on this PR.