[HIGH:75] Issue Found by Staging CI Review
Severity: HIGH
Confidence: 75/100
PR comment: #1359 (comment)
Description
JobContext created with Default pattern bypassing type safety — Line 1004 uses ..Default::default() leaving undocumented fields (channel, metadata, context_size) uninitialized. Fragile if defaults change. Should explicitly construct all fields or use factory function.
Auto-created by staging-ci Claude Code review