feat: Implement Phase 2 cross-cutting services with email and notification enhancements

- Refactor email verification and password reset utilities to use new email service.
- Introduce email delivery queue and notification delivery model for better tracking.
- Enhance file validation and storage services for improved security and ownership management.
- Add cron job for cleaning inactive notifications with retention policy.
- Update document worker to handle document generation and storage more efficiently.
- Implement logging improvements in activity and log workers.
- Create comprehensive documentation for new API endpoints and services.
- Add unit tests for file validation and notification policies to ensure robustness.

app/config/env.config.js

@@ -38,6 +38,13 @@ const envSchema = z.object({
   MAIL_PASS: z.string().optional(), MAIL_FROM: z.string().optional(),
   AWS_REGION: z.string().optional(), AWS_ACCESS_KEY_ID: z.string().optional(),
   AWS_SECRET_ACCESS_KEY: z.string().optional(), AWS_S3_BUCKET_NAME: z.string().optional(),
+  S3_ENDPOINT: z.string().url().optional(), S3_FORCE_PATH_STYLE: booleanString,
+  S3_SIGNED_URL_TTL_SECONDS: z.coerce.number().int().min(60).max(86400).default(900),
+  S3_MAX_UPLOAD_BYTES: z.coerce.number().int().positive().default(5242880),
+  EMAIL_QUEUE_CONCURRENCY: z.coerce.number().int().positive().default(5),
+  DOCUMENT_QUEUE_CONCURRENCY: z.coerce.number().int().positive().default(2),
+  NOTIFICATION_RETENTION_DAYS: z.coerce.number().int().positive().default(90),
+  LOG_RETENTION_DAYS: z.coerce.number().int().positive().default(30),
   DOCS_USER: z.string().optional(), DOCS_PASS: z.string().optional(),
   GOOGLE_CLIENT_ID: z.string().optional(), APPLE_CLIENT_ID: z.string().optional(),
 }).superRefine((env, context) => {