feat(diet): lagg till nordisk/carnivore/paleo + LCHF som matvanor med mjuk rankning

- DIET_PATTERNS: +nordic, +carnivore, +paleo (migration 0029). Ingen separat
  "lchf" - LCHF tacks av befintliga "low_carb" for att undvika dubblett med
  keto/low_carb. UI visar low_carb med etiketten "LCHF".
- Mobil onboarding + profil: 9 rena val (allatare..carnivore), 12 sprak.
- recommendation-engine: ny mjuk dietAffinity-poangterm (0-1, neutral 0.5).
  Rankar recept mot matvanan - ALDRIG hart filter (uteslutande matvanor,
  religion, allergener hanteras redan deterministiskt i sakerhetsfiltret).
  low_carb/keto: lag kolhydrat. carnivore: hog protein + lag kolhydrat.
  paleo: glutenfri/laktosfri-proxyer. nordic: svenskt/nordiskt kok + sasong.
- 6 nya tester (35 grona). Full typecheck 20/20 + mobil gron.

infrastructure/migrations/0029_lumpy_donald_blake.sql

@@ -0,0 +1,3 @@
+ALTER TYPE "public"."diet_pattern" ADD VALUE 'nordic';--> statement-breakpoint
+ALTER TYPE "public"."diet_pattern" ADD VALUE 'carnivore';--> statement-breakpoint
+ALTER TYPE "public"."diet_pattern" ADD VALUE 'paleo';

infrastructure/migrations/meta/_journal.json

@@ -204,6 +204,13 @@
       "when": 1786797105109,
       "tag": "0028_unknown_wrecking_crew",
       "breakpoints": true
+    },
+    {
+      "idx": 29,
+      "version": "7",
+      "when": 1787093092721,
+      "tag": "0029_lumpy_donald_blake",
+      "breakpoints": true
     }
   ]
 }