Problem

The triggerPatterns in internal/scoring/scoring.go only recognizes USE FOR:, triggers:, etc. It does not recognize WHEN: — which is the recommended trigger format in sensei for cross-model compatibility.

Expected Behavior

• Add "when:" to triggerPatterns in internal/scoring/scoring.go
• WHEN: should score at least as high as USE FOR: (sensei scores it higher)
• Update scoring tests to cover WHEN: triggers

References

• spboyer/sensei references/scoring.md — "WHEN: preferred (scores higher)"
• internal/scoring/scoring.go:76-81 — current trigger patterns

Acceptance Criteria

• WHEN: recognized as a trigger pattern
• Existing tests pass
• New test cases for WHEN: triggers added