feat(5.16+5.17): tipografie/antet branded + tipuri cont, planuri si enforcement

PRD 5.16 — propagare design finalizata (system font stack, fara IBM Plex self-hostat):
- US-001/002/008: tokeni --font-ui/--font-mono (system stack) + scala --fs-*; zero
  @font-face si zero /static/fonts/; landing aliniat la acelasi stack
- US-003: RAR online = dot compact in antet + meniu burger; banda rosie DOAR pe blocat
  (invariant zero-silent-failures pastrat)
- US-010: antet "ROMFAST AUTOPASS" + nume service + /login brandeit 2 coloane + badge plan;
  meniu burger cu separatoare; gate strict pe is_authenticated
- US-011: selector tema pill icon+eticheta (reuse THEMES)
- US-004/005/006/007: bug-fix editor prestatii (picker cod+denumire, add_extra in mod
  operatii, cod ales se salveaza fara "+", Renunta inchide via closest)
- US-012/013: landing Autentificare->/login; wizard import colapsat + 4 pasi pe tokeni
- fix VERIFY E2E: contoare duplicate pe 390px (inline display:flex batea @media) -> CSS + test-lock

PRD 5.17 — tipuri de cont + trial Pro 30z + enforcement DUR:
- US-001/002/008: accounts.tier + trial_until (migrare aditiva defensiva); app/plans.py
  sursa unica (PLANS, FREE_MONTHLY_LIMIT=60, effective_tier(now injectabil), monthly_usage,
  CONSUMED_STATUSES); create_account trial Pro 30z; CLI set-tier (protejat id=1, audit)
- US-003/004/005: enforce volum 60/luna INAINTE de build_key pe ambele canale
  (PLAN_LIMITA_LUNARA, 3 niveluri + log_event); gate API Pro+ (PLAN_FARA_API 403 actionabil);
  valideaza/nomenclator raman permise; downgrade lazy; flag AUTOPASS_ENFORCE_PLANS (kill-switch)
- US-006: badge plan antet + linie burger + consum N/60 + warn>=80% + 6 stari + copy RO
  pluralizat + banner one-time trial->Gratuit + pagina Cont

Regresie: 1380 passed, 0 failed, 1 deselected (live). E2E browser pe 390/1280 confirmat.
Backend trimitere (worker/masina stari/idempotenta/contract RAR) NEATINS. Lucrul 5.18
(corpus kNN) ramane separat, necomis.

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

app/config.py

@@ -104,6 +104,13 @@ class Settings(BaseSettings):
     worker_retry_max_s: int = 300
     worker_max_retries: int = 8           # peste atat -> error + banner
 
+    # --- Planuri de cont (PRD 5.17) ---
+    # Enforcement DUR al limitelor de plan (volum + acces API). True (implicit) = activ.
+    # False = kill-switch de operare: sare toate gate-urile de plan (util pentru debugging
+    # sau rollback rapid fara revert de cod). Enforcement DUR e activ implicit de la deploy
+    # (decizie user 2026-06-28, decizia #22 autoplan): nu exista conturi legacy, produs in TESTE.
+    enforce_plans: bool = True
+
     # --- Embeddings (sugestie mapare, Stratul 2 PRD 5.14) ---
     # DEZACTIVAT implicit: prima folosire lazy-load-eaza modelul fastembed/ONNX
     # (~230MB pe disc) sincron in thread-ul de cerere -> hang la prima cerere /mapari.