chore: enable jest cache and broaden worktree ignore pattern

[diegolmello]

Proposed changes

Speeds up local yarn test runs by enabling a persistent Jest cache and broadens the worktree ignore pattern so tests in any */worktrees/* directory (e.g. .worktrees/, .claude/worktrees/, .omc/worktrees/, .superset/worktrees/) are skipped — not just the root .worktrees/.

Changes:

• jest.config.js
  • Replace literal .worktrees/ in testPathIgnorePatterns with regex <rootDir>/.*worktrees/ so any parent directory containing a worktrees/ folder is ignored. Anchoring to <rootDir> ensures the pattern does not match when Jest is invoked from inside a worktree (the worktree's own tests still run).
  • Add the same pattern to modulePathIgnorePatterns (previous entry was scoped only to .worktrees/).
  • Add cacheDirectory: '<rootDir>/.jest-cache' to persist Jest's transform cache across runs. Warm runs of ./app/lib/services/voip went from ~56s to ~2s locally.
• .gitignore
  • Ignore .jest-cache/.

Issue(s)

https://rocketchat.atlassian.net/browse/CORE-2103

How to test or reproduce

1. Check out the branch.
2. Run yarn test ./app/lib/services/voip twice.
3. First run warms the cache; the second should complete in ~1–2 seconds.
4. Create a worktree under any */worktrees/* path, drop a .test.ts there, and confirm yarn test (from the main checkout) does not pick it up.
5. From inside such a worktree, run yarn test and confirm that the worktree's own tests still run and its cache is stored at <worktree>/.jest-cache (separate from the main checkout).

Screenshots

N/A

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves a current function)
• New feature (non-breaking change which adds functionality)
• Documentation update (if none of the other choices apply)

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have added necessary documentation (if applicable)
• Any dependent changes have been merged and published in downstream modules

Further comments

The speedup was tracked to a broken local Watchman binary on macOS (missing libfmt.11.dylib after a Homebrew upgrade); however the Jest cache change is beneficial regardless of Watchman state and is safe for CI (actions/cache can optionally be wired up later to persist .jest-cache between CI runs, but is not required for correctness).

Summary by CodeRabbit

• Chores
  • Updated Jest test runner configuration to streamline development experience with optimized cache management stored locally on disk.
  • Refined directory patterns to improve organization and prevent potential test interference from project worktrees and module directories.
  • Updated project ignore rules to maintain a cleaner development environment.

[coderabbitai]

Walkthrough

Jest configuration and gitignore updates to manage cache directory, ignore worktrees in module and test path patterns, and store Jest cache in a project-local directory.

Changes

Cohort / File(s)	Summary
Jest Configuration and Cache Management .gitignore, jest.config.js	Added .jest-cache/ to gitignore. Updated jest.config.js with cacheDirectory pointing to project-local cache, added modulePathIgnorePatterns to ignore worktree modules, and replaced testPathIgnorePatterns entry with absolute-rooted pattern matching worktrees.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested labels

type: chore

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	The pull request title accurately summarizes the main changes: enabling Jest cache and broadening the worktree ignore pattern. It is specific, concise, and directly reflects the primary changes in the changeset.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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[OtavioStasiak]

LGTM