Summary

Implement prompt engineering validation rules. Rule IDs are defined in SARIF output but no validator exists.

Rules to Implement

• PE-001: Repetition without emphasis or XML isolation
• PE-002: Chain-of-thought on simple task
• PE-003: Weak imperative language in critical rules
• PE-004: Ambiguous instructions

Deliverables

• Create crates/agnix-core/src/rules/prompt.rs
• Add prompt file detection in lib.rs
• Add test fixtures in tests/fixtures/prompt/
• Tests for each rule

References

• knowledge-base/VALIDATION-RULES.md