feat(infra): add tools service with document scanner, image & PDF tools

Implement self-hosted document scanner and media processing tools as
an alternative to CamScanner/ilovepdf without third-party uploads.

Backend: Rust Axum gateway + worker pool with NATS JetStream queue
Frontend: Next.js 16 + shadcn/ui + Tailwind v4 + Framer Motion
Pipeline: Canny edge detection -> DLT homography warp -> Sauvola
binarization -> Hough deskew -> Tesseract OCR -> searchable PDF

Phase 1 (MVP) delivers:
- Document scanner with perspective correction and OCR
- Image compress/resize/convert tools
- PDF merge/split/compress tools
- Real-time WebSocket progress updates
- Rate limiting, auto-cleanup, Prometheus metrics
- Full CI/CD pipeline with Docker multi-stage build

Co-Authored-By: Kilo <kilo@kilo.ai>

infra/traefik/dynamic/apps.yaml

@@ -20,6 +20,16 @@ http:
         - common-chain@file
       service: scraper-service
 
+    # ── Tools (Document Scanner & Media Processing) ──
+    tools:
+      rule: 'Host(`tools.asepharyana.my.id`) || Host(`tools.asepharyana.web.id`)'
+      entryPoints:
+        - websecure
+      tls: {}
+      middlewares:
+        - common-chain@file
+      service: tools-service
+
     # ── Jaeger UI ──
     jaeger:
       rule: 'Host(`jaeger.asepharyana.my.id`) || Host(`jaeger.asepharyana.web.id`)'
@@ -41,6 +51,11 @@ http:
         servers:
           - url: 'http://scraper-api:4091'
 
+    tools-service:
+      loadBalancer:
+        servers:
+          - url: 'http://tools:3001'
+
     jaeger-service:
       loadBalancer:
         servers: