zocomputer e1befe5077 feat(agent): add jittered retry backoff ...

Adds agent/retry_utils.py with jittered_backoff() — exponential backoff
with additive jitter to prevent thundering-herd retry spikes when
multiple gateway sessions hit the same rate-limited provider.

Replaces fixed exponential backoff at 4 call sites:
- run_agent.py: None-choices retry path (5s base, 120s cap)
- run_agent.py: API error retry path (2s base, 60s cap)
- trajectory_compressor.py: sync + async summarization retries

Thread-safe jitter counter with overflow guards ensures unique seeds
across concurrent retries.

Trimmed from original PR to keep only wired-in functionality.

Co-authored-by: martinp09 <martinp09@users.noreply.github.com>

2026-04-08 00:41:36 -07:00

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