Relax protein to 1.7 g/kg; add rational-portion guard + weekly protein floor

- diet.protein_per_kg 2 -> 1.7 g/kg (evidence ceiling for trained/resistance-adapted adults)
  daily target 190-200 -> 165-175 g/day, ~80-90 g/meal
- weekly non-whey protein floor 1330 -> 1190 g (170 g/day x 7), still excl whey
- SKILL.md: RATIONAL PORTIONS hard rule (per-item max_per_meal caps, no single-ingredient
  overload, honest shortfall reporting); WEEKLY PROTEIN FLOOR (>=3 sources, none >50%)
- inventory.json: per-item max_per_meal caps + rational_portions defaults table
- scripts/verify_portions.py: regression probe for overload/cap violations
- README + references synced to 1.7 g/kg; .idea/.agentbridge gitignored

README.md

@@ -1,7 +1,7 @@
 # Meal Suggestion — Kitchen Inventory + High-Protein Meals
 
 An automated, research-grounded meal system for a single user (jp): a recovering
-burns victim on a **high-protein diet (~190–200 g/day)** who is also losing fat,
+burns victim on a **high-protein diet (~165–175 g/day)** who is also losing fat,
 and who wants to **avoid buying red meat**. It does two things on a schedule:
 
 1. **Daily meal suggestions** — two meals (lunch + dinner) built only from what
@@ -66,7 +66,7 @@ meal-suggestion/
 │   ├── email-template.md          # HTML email scaffold (inline CSS, mobile-friendly)
 │   ├── food-health.md             # Healing + 46yo health + easy/tasty meal research
 │   ├── protein-sources.md         # Allowed proteins + example pairings
-│   ├── protein-targets.md         # Protein math (2 g/kg)
+│   ├── protein-targets.md         # Protein math (1.7 g/kg)
 │   ├── meal-history.md            # 7-day logger spec + reconcile-from-inventory logic
 │   └── eastbourne-shops.md        # Shop price table (Lidl preferred)
 ├── scripts/
@@ -86,7 +86,7 @@ is a synced mirror under `~/IdeaProjects/meal-suggestion/`. The two stay in step
 
 ## Core rules
 
-- **High-protein target:** ~190–200 g/day (≈2 g/kg at ~95–100 kg, for burns
+- **High-protein target:** ~165–175 g/day (≈1.7 g/kg at ~95–100 kg, for burns
   recovery + lean-mass preservation during ~15 kg fat loss). Aim ~90–100 g per
   meal and **state the per-meal and daily protein totals** in the email.
 - **Weight-loss framing:** mild calorie deficit via bulking with veg and going
@@ -202,7 +202,7 @@ creds from `~/.hermes/.env`). Both HTML (inline CSS, mobile-friendly, dark-on-li
 and a plain-text alternative are produced so the plan survives HTML-stripping
 clients.
 
-- **Daily:** header (date + `high-protein · ~190–200g/day · no red meat bought`),
+- **Daily:** header (date + `high-protein · ~165–175g/day · no red meat bought`),
   two meal cards (name, ingredients, 2–3 step method, protein total, short
   "health boost" note), footer (`Reply to tell me what you used and I'll update
   the inventory`).