Translate chapter-planner and chapter-writer agents to English

[ThomasHoussin]

Convert agent instructions from French to English for consistency
with other agents (style-linter, character-reviewer, continuity-reviewer).
The output language directive remains French as per project requirements.

[claude]

Pull Request Review: Translate chapter-planner and chapter-writer agents to English

Summary

This PR translates the instructions for two critical agents (chapter-planner and chapter-writer) from French to English, bringing them into alignment with the other agents in the system (style-linter, character-reviewer, continuity-reviewer, state-updater). The output language directive correctly remains French, as specified in CLAUDE.md.

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✅ Strengths

1. Consistency Achievement: This change successfully unifies the codebase language. All six agents now have English instructions, which improves maintainability and reduces cognitive load when working across different agent files.

2. Preserved Functionality: The translation maintains all functional requirements:

   • Output language directive explicitly kept as French (line 80 in chapter-planner.md, line 55 in chapter-writer.md)
   • All section structures preserved
   • All verification checklists intact
   • File naming conventions unchanged

3. Quality Translation: The English translations are clear and professional:

   • "Tu es un architecte narratif expert" → "You are an expert narrative architect"
   • Technical terminology correctly translated
   • Tone appropriately maintained

4. No Logic Changes: This is a pure documentation change with zero impact on functionality, reducing risk.

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📋 Code Quality Assessment

Translation Accuracy: ✓ Excellent

• All semantic meaning preserved
• No ambiguities introduced
• Technical terms appropriately handled

Consistency with Existing Agents: ✓ Strong

• Matches the English style of style-linter.md:8-135
• Parallels the structure of character-reviewer.md:8-127
• Uses similar imperative voice ("You MUST", "You MUST NOT")

Completeness: ✓ Complete

• Frontmatter (YAML) unchanged - correct approach
• All sections translated
• No orphaned French fragments

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🔍 Detailed Analysis

chapter-planner.md

• Lines 7-10: Mission statement clearly translated
• Lines 18-38: Working process maintains operational clarity
• Lines 40-69: Output format template preserved exactly
• Line 80: Critical directive maintained: "All your outputs must be written in French"
• Lines 82-90: Verification checklist remains actionable

chapter-writer.md

• Lines 7-10: Writer role definition appropriately translated
• Lines 18-44: Four-step writing process clearly enumerated
• Lines 46-62: Absolute rules maintain necessary strictness
• Line 55: Output language correctly preserved as French
• Lines 70-78: Verification checklist complete

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🎯 Testing Considerations

While this is a documentation change, verification would involve:

1. Confirming agents still receive and interpret instructions correctly
2. Validating French output is still produced (as per line 80/55)
3. Ensuring no agent behavior changes post-merge

However, since agent instructions are runtime-interpreted by the LLM and no code logic changed, the risk is minimal.

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🔒 Security Concerns

None identified. This is a pure documentation change with no security implications.

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⚡ Performance Considerations

Negligible impact. English instructions may be marginally more efficient for token processing in English-primary LLMs, but the difference would be unmeasurable in practice.

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📊 Test Coverage

Not applicable - no code logic changed. Agent behavior testing would be at the integration level (workflow validation).

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💡 Recommendations

1. Post-merge validation: Run one complete chapter generation workflow to confirm both agents function correctly with English instructions.

2. Documentation note: Consider adding a comment in CLAUDE.md noting that agent instructions are in English while outputs are in French, to prevent future confusion.

3. Future consistency: If additional agents are created, use English for instructions with explicit French output directives.

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✅ Final Verdict

APPROVED - This is a clean, well-executed translation that improves codebase consistency without introducing risk. The change aligns with the existing agent architecture and maintains all critical functional requirements.

The PR achieves its stated goal: converting agent instructions to English for consistency while preserving French output as required by project specifications.

Ready to merge.