feat: add appointments, campaigns, admin, storage, tests and various updates

- Add new routers: admin, appointments, campaigns
- Add storage service and logging config
- Add migrations directory and test suite with pytest config
- Add supabase_migration_features.sql
- Update models, dependencies, config, and existing routers
- Remove whatsapp_service (deleted)
- Update pyproject.toml and uv.lock dependencies

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

app/logging_config.py

@@ -0,0 +1,34 @@
+import logging
+import os
+
+
+def configure_logging():
+    """Configure structured JSON logging for the application."""
+    log_level = logging.DEBUG if os.getenv("APP_ENV", "development") == "development" else logging.INFO
+
+    try:
+        from pythonjsonlogger import jsonlogger
+
+        handler = logging.StreamHandler()
+        formatter = jsonlogger.JsonFormatter(
+            fmt="%(asctime)s %(levelname)s %(name)s %(message)s",
+            datefmt="%Y-%m-%dT%H:%M:%S",
+            rename_fields={"asctime": "timestamp", "levelname": "level", "name": "logger"},
+        )
+        handler.setFormatter(formatter)
+    except ImportError:
+        # Fallback to plain text if pythonjsonlogger not installed yet
+        handler = logging.StreamHandler()
+        handler.setFormatter(
+            logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
+        )
+
+    root_logger = logging.getLogger()
+    root_logger.handlers.clear()
+    root_logger.addHandler(handler)
+    root_logger.setLevel(log_level)
+
+    # Silence noisy third-party loggers
+    logging.getLogger("uvicorn.access").setLevel(logging.WARNING)
+    logging.getLogger("httpx").setLevel(logging.WARNING)
+    logging.getLogger("httpcore").setLevel(logging.WARNING)