Greptile Summary

This PR changes the timeLine string produced by resolveCronStyleNow from a single combined line (Current time: ... (tz) / YYYY-MM-DD HH:MM UTC) to two separate lines (Current time: ...\nReference UTC: ...). The motivation — avoiding model confusion when local and UTC dates straddle midnight — is sound.

The change itself in src/agents/current-time.ts is minimal and correct. The cron isolated-agent test was updated accordingly. However, three other test files that assert on the old single-line format were not updated and will fail:

• src/auto-reply/reply/memory-flush.test.ts:28 — asserts toContain("... (America/New_York) / 2026-02-16 15:00 UTC")
• src/auto-reply/reply/session-reset-prompt.test.ts:20 — asserts toContain("... (America/New_York) / 2026-03-03 14:00 UTC")
• src/auto-reply/reply/post-compaction-context.test.ts:215 — asserts toContain("... (America/New_York) / 2026-03-03 14:00 UTC")

Each of these needs to be split into two separate toContain checks matching the new format.

Confidence Score: 2/5

• Not safe to merge — three existing tests assert on the old combined timeLine format and will fail.
• The production logic change is correct and intentional, but the PR is incomplete: memory-flush.test.ts, session-reset-prompt.test.ts, and post-compaction-context.test.ts all contain toContain(...) assertions matching the old "... / YYYY-MM-DD HH:MM UTC" format that no longer exists in the output. These tests will fail in CI without being updated.
• src/auto-reply/reply/memory-flush.test.ts, src/auto-reply/reply/session-reset-prompt.test.ts, and src/auto-reply/reply/post-compaction-context.test.ts all need their timeLine format assertions updated.

_{Last reviewed commit: 8cd9090}