feat(learning): voice-fingerprint corpus-refresh proposal generator (#161, prose half)

The voice-fingerprint (docs/daphna-voice-fingerprint.md) is the PRIMARY abstract
style channel the writer consumes (07-learning §0.2 channel A), but it was
hand-authored and never regenerated from the growing corpus — the "voice" the
writer adapts stayed frozen while finals accumulated. PR #345 unfroze the
structural half (corpus-measured ratios → writer); this is the prose half.

scripts/regenerate_voice_fingerprint.py reads the corpus (style_corpus stats +
a bounded block-level style_exemplars sample + measured section ratios) and asks
Opus (local) to PROPOSE refinements/additions to the fingerprint — STYLE / METHOD
/ VOICE / LEXICON only, grounded in corpus evidence, never case substance
(INV-LRN5), preserving curated insights rather than replacing them.

CHAIR-GATED, HARD (INV-LRN1): the prose profile is voice-knowledge, not a
low-risk style rule, so it does NOT auto-flow. The script writes a PROPOSAL to
data/curator-proposals/ (the existing curator-proposal surface) and NEVER
overwrites the live fingerprint; the chair reviews and hand-commits accepted parts
— the same manual gate the fingerprint already uses. Runs on the host (claude CLI).

Reuses claude_session + measure_corpus_ratios + the curator-proposals dir (G2 —
no parallel synthesis or gate). SCRIPTS.md + spec §0.2 updated.

Invariants: INV-LRN1 (hard chair gate for voice-knowledge prose), INV-LRN5
(style-only synthesis), G2 (reuses existing synthesis inputs + proposal surface).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

scripts/SCRIPTS.md

@@ -101,6 +101,7 @@
 | `notify.py` | python | שליחת מייל התראה מסוכנים via SMTP (Gmail) | נקרא ע"י סוכנים |
 | `bidi_table.py` | python | יצירת טבלאות box-drawing עם תמיכה ב-BiDi (עברית+אנגלית) | ספריית עזר |
 | `convert_decision_template.py` | python | המרת `data/training/טיוטת החלטה.dotx` → `skills/docx/decision_template.docx` לטעינה ב-python-docx | להריץ כשמתעדכנת התבנית |
+| `regenerate_voice_fingerprint.py` | python | מסנתז מהקורפוס (style_corpus + דוגמאות + יחסים) **הצעה** לעדכון פרופיל-הקול (Opus מקומי). שער-יו"ר קשיח (INV-LRN1): כותב ל-`data/curator-proposals/`, לעולם לא דורס את `docs/daphna-voice-fingerprint.md` — היו"ר סוקרת ומקבעת ידנית. החצי-הפרוזה של #161 (החצי-המבני=ratios ב-PR#345). רץ על המארח (claude CLI). STYLE/METHOD בלבד (INV-LRN5) | ידני / לתזמן תקופתית |
 | `deploy-track-changes.sh` | bash | סנכרון skills CMP↔CMPA + בדיקות + הנחיות deploy לארכיטקטורת Track Changes | ידני |
 
 ## חד פעמי