feat(idaa): server-side Novi member verification endpoint

Proxies GET /customers/{uuid} to Novi AMS server-to-server so members'
browser IPs are no longer in the call path, eliminating false "Access
Denied" for users on hotel/conference WiFi, VPNs, and CDN-filtered nets.

- New router: GET /v3/action/idaa/novi_member/{uuid}
- Business logic in app/methods/idaa_novi_verify_methods.py
  - Redis cache (4h TTL, key: idaa:novi_member:{uuid})
  - 404 never cached (recently-joined member anti-pattern)
  - Email space→+ normalization (Novi quirk)
  - Display name: "FirstName L." format with Name field fallback
- Registered in registry.py under /v3/action/idaa tag
- 9 unit tests covering all response paths (200/404/429/503/unreachable,
  cache hit, email normalization, display name format)
- Frontend guide (Section 12) and tests/README updated with full spec
  and migration table for frontend hand-off

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

app/methods/idaa_novi_verify_methods.py

@@ -0,0 +1,154 @@
+import datetime
+import json
+import requests
+from typing import Dict, Optional
+
+from app.lib_general import log, logger_reset
+
+IDAA_SITE_ID_RANDOM = '58_gJESdlUh'
+_CACHE_TTL = datetime.timedelta(hours=4)
+
+
+# ── Config ────────────────────────────────────────────────────────────────
+
+@logger_reset
+def _load_idaa_cfg() -> Optional[Dict]:
+    """Load IDAA site cfg_json. Returns parsed dict or None on failure."""
+    from app.methods.site_methods import load_site_obj
+    site = load_site_obj(site_id=IDAA_SITE_ID_RANDOM, model_as_dict=True)
+    if not site:
+        log.error("Could not load IDAA site record (id_random='%s').", IDAA_SITE_ID_RANDOM)
+        return None
+    cfg = site.get('cfg_json')
+    if isinstance(cfg, str):
+        try:
+            cfg = json.loads(cfg)
+        except Exception as e:
+            log.error("Failed to parse IDAA cfg_json: %s", e)
+            return None
+    if not isinstance(cfg, dict):
+        log.error("IDAA cfg_json is not a dict after parsing.")
+        return None
+    return cfg
+
+
+def _cache_key(uuid: str) -> str:
+    return f'idaa:novi_member:{uuid}'
+
+
+# ── Public API ────────────────────────────────────────────────────────────
+
+@logger_reset
+def verify_novi_member(uuid: str) -> Dict:
+    """
+    Proxy GET /customers/{uuid} to Novi AMS and return normalized member data.
+
+    Returns a dict with one of:
+      {'status': 200, 'verified': True,  'full_name': '...', 'email': '...'}
+      {'status': 404, 'reason': '...'}
+      {'status': 429, 'reason': '...'}
+      {'status': 503, 'reason': '...'}
+
+    Redis cache key: idaa:novi_member:{uuid}, TTL 4 hours.
+    Only 200 (verified) results are cached — 404 is never cached.
+    """
+    from app.lib_redis_helpers import redis_client
+
+    cache_key = _cache_key(uuid)
+
+    # ── Cache hit ─────────────────────────────────────────────────────────
+    cached_raw = redis_client.get(cache_key)
+    if cached_raw:
+        try:
+            cached = json.loads(cached_raw)
+            log.info("Novi verify cache hit: %s", uuid)
+            return cached
+        except Exception:
+            pass  # corrupt cache entry — fall through to Novi
+
+    # ── Load credentials ──────────────────────────────────────────────────
+    cfg = _load_idaa_cfg()
+    if not cfg:
+        return {'status': 503, 'reason': 'IDAA site configuration unavailable.'}
+
+    base_url = cfg.get('novi_api_root_url', '').rstrip('/')
+    api_key  = cfg.get('novi_idaa_api_key', '')
+
+    if not base_url or not api_key:
+        log.error("novi_api_root_url or novi_idaa_api_key missing from IDAA cfg_json.")
+        return {'status': 503, 'reason': 'Novi credentials not configured.'}
+
+    headers = {'Authorization': f'Basic {api_key}', 'Accept': 'application/json'}
+
+    # ── Call Novi ─────────────────────────────────────────────────────────
+    try:
+        resp = requests.get(f'{base_url}/customers/{uuid}', headers=headers, timeout=10)
+    except requests.exceptions.ConnectionError as e:
+        log.error("Novi unreachable: %s", e)
+        return {'status': 503, 'reason': 'Novi API unreachable.'}
+    except requests.exceptions.Timeout:
+        log.error("Novi request timed out for UUID %s", uuid)
+        return {'status': 503, 'reason': 'Novi API timed out.'}
+    except Exception as e:
+        log.exception("Unexpected error calling Novi for UUID %s: %s", uuid, e)
+        return {'status': 503, 'reason': 'Unexpected error contacting Novi.'}
+
+    if resp.status_code == 429:
+        log.warning("Novi rate limit hit for UUID %s", uuid)
+        return {'status': 429, 'reason': 'Novi rate limit exceeded. Try again shortly.'}
+
+    if resp.status_code >= 500:
+        log.error("Novi server error %s for UUID %s", resp.status_code, uuid)
+        return {'status': 503, 'reason': f'Novi server error ({resp.status_code}).'}
+
+    if resp.status_code == 404:
+        log.info("Novi returned 404 for UUID %s", uuid)
+        return {'status': 404, 'reason': 'Member not found in Novi.'}
+
+    if resp.status_code != 200:
+        log.error("Unexpected Novi status %s for UUID %s: %s", resp.status_code, uuid, resp.text[:200])
+        return {'status': 503, 'reason': f'Unexpected Novi response ({resp.status_code}).'}
+
+    # ── Parse response ────────────────────────────────────────────────────
+    try:
+        data = resp.json()
+    except Exception:
+        log.error("Novi returned non-JSON for UUID %s", uuid)
+        return {'status': 503, 'reason': 'Novi returned an unparseable response.'}
+
+    if not isinstance(data, dict):
+        log.warning("Novi returned non-dict body for UUID %s", uuid)
+        return {'status': 404, 'reason': 'Member not found in Novi (empty response).'}
+
+    # Empty-member anti-pattern: Novi 200 with no identity data
+    email_raw = (data.get('Email') or '').strip()
+    if not email_raw:
+        log.info("Novi 200 with no Email for UUID %s — empty-member anti-pattern", uuid)
+        return {'status': 404, 'reason': 'Member not found in Novi (no identity data).'}
+
+    email = email_raw.replace(' ', '+')
+
+    # Build display name: "FirstName LastName[0]." — fall back to Name field
+    first = (data.get('FirstName') or '').strip()
+    last  = (data.get('LastName')  or '').strip()
+    if first and last:
+        full_name = f'{first} {last[0]}.'
+    elif first:
+        full_name = first
+    else:
+        full_name = (data.get('Name') or '').strip() or 'Member'
+
+    result = {
+        'status': 200,
+        'verified': True,
+        'full_name': full_name,
+        'email': email,
+    }
+
+    # ── Cache verified result ─────────────────────────────────────────────
+    try:
+        redis_client.setex(cache_key, _CACHE_TTL, json.dumps(result))
+    except Exception as e:
+        log.warning("Failed to cache Novi verify result for %s: %s", uuid, e)
+
+    return result