fix: use completed history for forked subagents - #30

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@v4, actions/checkout@v4, actions/setup-node@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

packages/fold-agent/test/Mode/Rpi.vi.test.ts:186:3: Expect takes at most 1 argument

packages/fold-agent/test/Mode/Rpi.vi.test.ts:185:3: Expect takes at most 1 argument

packages/fold-agent/test/Mode/Rpi.vi.test.ts:179:3: Expect takes at most 1 argument

packages/fold-agent/test/Mode/Rpi.vi.test.ts:178:3: Expect takes at most 1 argument

packages/fold-agent/test/Mode/Rpi.vi.test.ts:163:3: Expect takes at most 1 argument

packages/fold-agent/test/Mode/Rpi.vi.test.ts:156:3: Expect takes at most 1 argument

packages/fold-agent/test/Mode/Rpi.vi.test.ts:155:3: Expect takes at most 1 argument

packages/fold-agent/test/Mode/Rpi.vi.test.ts:133:3: Expect takes at most 1 argument

packages/fold-agent/test/Mode/Rpi.vi.test.ts:130:3: Expect takes at most 1 argument