**Motivations:**
- Make the separation between the formal core and optional interpretations explicit in Chapter 1
- Provide a consistent structure for optional readings (H/E/I/C)
**Root causes:**
- The ontological interpretation was presented as a regular section, making its optional status less visible
**Correctifs:**
- Rename the section to “Optional reading (I)” and add a clear status block
- Add I.0–I.7 subheadings and the H/E/I/C format bullets
- Split out “References (Ch. 1)” as its own section
**Evolutions:**
- Improve navigation within the optional reading via explicit subheadings
**Pages affectées:**
- v0/livre_jeune_adulte.md
Co-authored-by: Cursor <cursoragent@cursor.com>