fix(test): exclude .claude/ from jest scanning (kills ~163 phantom worktree suites + OOM)

[jonathonbyrdziak]

Problem

yarn test:unit:jest on a clean main checkout is slow, non-deterministic, and noisy. Root cause: jest walks into .claude/worktrees/agent-* — stale registered git worktrees left behind by Claude Code agents (April/June snapshots, on old branches feat/token-ws3-slim-tool-catalog and worktree-agent-ac361fc4). Each is a full copy of the repo tree, so jest discovers and runs their test files as if they were part of the working tree.

Measured impact on this machine (node --experimental-vm-modules .../jest.js, no filters):

	before	after
total suites scanned	231	68
runtime	59 s + a jest worker OOM-killed (SIGKILL)	18 s
phantom .claude/worktrees suites	~163	0

The SIGKILL made runs non-deterministic (a worker dies mid-run) and the ~163 duplicate suites buried the real failures.

Fix

Add <rootDir>/.claude to both ignore lists in jest.config.js:

• modulePathIgnorePatterns — stops haste-map module/mock collisions from the duplicated trees
• testPathIgnorePatterns — stops test discovery inside them

.claude/ is already gitignored (it's the Claude Code convention dir), so this only affects local runs — but every agent/dev who has ever created a worktree hits it. Two-line, additive, no behavior change to real tests.

Scope / not included

This is hygiene only. After the fix, 24 real-tree suites still fail — all pre-existing and environment-specific, not touched here:

• @napi-rs/xattr-linux-arm64-musl native binding missing (arm64/musl box; fine on x64 CI)
• missing kubectl/integration fixtures + readlink ENOENT under /tmp
• ReferenceError: TextEncoder is not defined when pg is imported under the jsdom test environment (3 suites — a genuine cross-env bug worth a follow-up, but out of scope for this PR)

Note for whoever's chasing the "jest fails on clean branch" report: the earlier "missing babel-preset-expo" theory is a red herring — this repo has no Expo/babel-preset-expo dependency at all (Electron/Vue/Babel toolchain); grep babel-preset-expo over the whole jest log returns 0.

🤖 Generated with Claude Code

[jonathonbyrdziak]

PR opened: #502 (autonomous heartbeat cycle). Fix applied and verified in an isolated worktree off main; see the PR for the verification run.