feat(cmp): restore vendor-agnostic fields + module wiring

Re-add 13 vendor-agnostic columns to banner models/serializers/service
(consent_method, banner_version, device_type, browser, os, etc.) that
were lost when another session overwrote the code. Keep vendor_consents
dict from the other session.

Add list_consents method back to BannerConsentService.

Wire CookieBanner, Loeschfristen and UseCases into Document Generator
contextBridge (CMP_NAME, analytics tools, retention months, feature flags).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend-compliance/compliance/db/banner_models.py

@@ -36,6 +36,20 @@ class BannerConsentDB(Base):
     user_agent = Column(Text)
     consent_string = Column(Text)
     linked_email = Column(Text)
+    # Vendor-agnostische Felder (Migration 107)
+    consent_method = Column(Text)          # accept_all / reject_all / custom_selection
+    banner_version = Column(Integer)
+    banner_config_hash = Column(Text)
+    geo_country = Column(Text)
+    geo_region = Column(Text)
+    consent_scope = Column(Text, default='domain')
+    page_url = Column(Text)
+    referrer = Column(Text)
+    device_type = Column(Text)             # mobile / desktop / tablet
+    browser = Column(Text)
+    os = Column(Text)
+    screen_resolution = Column(Text)
+    session_id = Column(Text)
     expires_at = Column(DateTime)
     created_at = Column(DateTime, nullable=False, default=datetime.utcnow)
     updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
@@ -66,6 +80,8 @@ class BannerConsentAuditLogDB(Base):
     user_agent = Column(Text)
     banner_config_hash = Column(Text)
     consent_version = Column(Integer)
+    consent_method = Column(Text)
+    page_url = Column(Text)
     created_at = Column(DateTime, nullable=False, default=datetime.utcnow)
 
     __table_args__ = (