Phase 1 MVP: synchronous OCR + regex header extraction

Implements the foundation of the OCR Sprint service:
- FastAPI app with /api/v1/health and /api/v1/documents (sync upload)
- Pydantic v2 schemas for documents, extraction result, personnel
- Pipeline: PDF/image ingest (PyMuPDF), preprocessing (resize, deskew,
  denoise, optional adaptive threshold), PaddleOCR wrapper, regex-based
  header extraction (nomor sprint, tanggal, satuan, perihal, dasar),
  signatory NRP, master-pangkat validation, confidence scoring + routing.
- Tests: 61 unit tests covering regex rules, validators, preprocess,
  ingest, confidence, and API contract (PaddleOCR mocked).
- Tooling: pyproject (setuptools), ruff, mypy strict, pytest, pre-commit,
  Dockerfile, docker-compose, Makefile.
- Docs: README + docs/architecture.md (full hybrid stack rationale and
  6-phase roadmap).

Co-authored-by: adrian kuman firmansah <adriancuman@gmail.com>

docker-compose.yml

@@ -0,0 +1,23 @@
+# Phase 1 MVP compose: API only.
+# Phase 4 will add redis, postgres, minio, and worker services.
+services:
+  api:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: ocr-sprint-service:dev
+    container_name: ocr-sprint-api
+    ports:
+      - "8000:8000"
+    environment:
+      APP_ENV: local
+      APP_LOG_LEVEL: INFO
+      OCR_USE_GPU: "false"
+      STORAGE_LOCAL_DIR: /app/storage
+    volumes:
+      - ./storage:/app/storage
+      - paddle-models:/home/app/.paddleocr
+    restart: unless-stopped
+
+volumes:
+  paddle-models: