refactor(consent-sdk,dsms-gateway): split ConsentManager, types, and main.py

- consent-sdk/src/types/index.ts: extracted 438 LOC into core.ts, config.ts,
  vendor.ts, api.ts, events.ts, storage.ts, translations.ts; index.ts is now
  a 21-LOC barrel re-exporter
- consent-sdk/src/core/ConsentManager.ts: extracted normalizeConsentInput,
  isConsentExpired, needsConsent, ALL_CATEGORIES, MINIMAL_CATEGORIES into
  consent-manager-helpers.ts; reduced from 467 to 345 LOC
- dsms-gateway/main.py: extracted models → models.py, config → config.py,
  IPFS helpers + verify_token → dependencies.py, route handlers →
  routers/documents.py and routers/node.py; main.py is now a 41-LOC app
  factory; test mock paths updated accordingly (27/27 tests pass)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

dsms-gateway/config.py

@@ -0,0 +1,9 @@
+"""
+DSMS Gateway — runtime configuration from environment variables.
+"""
+
+import os
+
+IPFS_API_URL = os.getenv("IPFS_API_URL", "http://dsms-node:5001")
+IPFS_GATEWAY_URL = os.getenv("IPFS_GATEWAY_URL", "http://dsms-node:8080")
+JWT_SECRET = os.getenv("JWT_SECRET", "your-super-secret-jwt-key-change-in-production")