[gezerui888]

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Fixes #314.

I clamped maxDispatchConcurrency to at least 1 after integer parsing. This prevents 0 and 0.5 from freezing reconciliation when a task is queued. Other fleet settings keep their existing behavior.

I added regression tests for both values with a queued task. They check the config before reconciliation, so the old code fails without hanging the suite.

Tests:

• bun run typecheck
• bun test scripts/agent-docs.test.ts
• cd backend && bun run test
• cd frontend && bun run test && bun run lint
• Independent backend processes with PostgreSQL 16 and Bun 1.3.14: for both inputs, I submitted a task through POST /api/runs. Before the fix, subsequent health requests timed out. After the fix, health and run requests returned HTTP 200.

Screenshots / Recordings

Before

After

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[gezerui888]

I have read the CLA Document and I hereby sign the CLA