fix: apply cargo fmt formatting to fc-agent output.rs

[claude-claude]

CI Fix

Fixes CI #22188494087

Problem

The cargo fmt --check lint step failed because fc-agent/src/output.rs had formatting that didn't match rustfmt style. Four locations needed reformatting:

1. Line 80: eprintln! macro with a long format string needed to be broken across lines
2. Lines 287-300: tokio::time::timeout calls and assert! macros in test_double_reconnect_does_not_drop_messages needed reformatting
3. Lines 320-324: tokio::time::timeout call in test_no_notify_permit_cascade needed reformatting
4. Lines 331-336: tokio::time::timeout call and assert! macro in the same test needed reformatting

Solution

Applied the exact formatting changes that cargo fmt requires — no logic changes, only whitespace/line-break adjustments.

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Generated by Claude | Fix Run