Greptile Summary

This PR fixes a TypeScript type regression in src/gateway/server-cron.ts where the agentEntry variable was being inferred as false | AgentEntry | undefined instead of AgentEntry | undefined, causing a type-check failure.

• Root cause: The original && short-circuit expression (Array.isArray(...) && list.find(...)) propagates the boolean false to the result type when the left-hand side is falsy, yielding a union type that includes false.
• Fix: Replacing with a ternary expression (condition ? list.find(...) : undefined) ensures agentEntry is always typed as AgentEntry | undefined.
• Runtime behavior: Unchanged — both false?.heartbeat and undefined?.heartbeat produce undefined, and spreading either is a no-op, so no behavioral difference exists at runtime.

Confidence Score: 5/5

• This PR is safe to merge — it is a minimal, correct fix with no runtime behavioral change.
• The change is a one-for-one semantic equivalent swap of && for a ternary, resolving a known TypeScript type-inference quirk. Runtime behavior is demonstrably identical (both false?.heartbeat and undefined?.heartbeat evaluate to undefined; spreading either is a no-op). No other logic is touched.
• No files require special attention.

_{Last reviewed commit: 3781b94}