fix: make docker compose build and start the API

The image context was backend/, so COPY frontend/ failed. Build from the
repo root, place Python modules on the import path, and pin packages that
exist on PyPI. The web process no longer loads the LLM at startup.

docker-compose.yml

@@ -1,8 +1,6 @@
-version: '3.8'
-
 services:
   qdrant:
-    image: qdrant/qdrant:latest
+    image: docker.io/qdrant/qdrant:latest
     container_name: espiritismo-qdrant
     ports:
       - "6333:6333"
@@ -11,7 +9,7 @@ services:
     restart: unless-stopped
 
   redis:
-    image: redis:7-alpine
+    image: docker.io/library/redis:7-alpine
     container_name: espiritismo-redis
     ports:
       - "6379:6379"
@@ -20,52 +18,71 @@ services:
     restart: unless-stopped
 
   web:
-    build: ./backend
+    build:
+      context: .
+      dockerfile: backend/Dockerfile
     container_name: espiritismo-web
     ports:
       - "8000:8000"
     volumes:
-      - ./PDF:/app/uploads:ro
-      - ./backend/schedules.json:/app/schedules.json
+      - ./PDF:/app/books:ro
+      - uploads_data:/app/uploads
+      - ./data/schedules.json:/app/schedules.json
+      - ./backend/models:/app/models
     environment:
-      - QDRANT_URL=http://qdrant:6333
-      - CELERY_BROKER_URL=redis://redis:6379/0
-      - CELERY_RESULT_BACKEND=redis://redis:6379/0
-      - TELEGRAM_BOT_TOKEN=${TELEGRAM_BOT_TOKEN}
-      - TELEGRAM_CHAT_ID=${TELEGRAM_CHAT_ID}
+      QDRANT_URL: http://qdrant:6333
+      CELERY_BROKER_URL: redis://redis:6379/0
+      CELERY_RESULT_BACKEND: redis://redis:6379/0
+      TELEGRAM_BOT_TOKEN: ${TELEGRAM_BOT_TOKEN:-}
+      TELEGRAM_CHAT_ID: ${TELEGRAM_CHAT_ID:-}
+      GPT4ALL_MODEL: /app/models/llama-3.2-3b-instruct-q4_0.gguf
+      BOOKS_DIR: /app/books
+      UPLOAD_DIR: /app/uploads
+      SCHEDULES_PATH: /app/schedules.json
     depends_on:
       - qdrant
       - redis
     restart: unless-stopped
 
   celery:
-    build: ./backend
+    build:
+      context: .
+      dockerfile: backend/Dockerfile
     container_name: espiritismo-celery
     command: celery -A app.tasks.celery_tasks worker --loglevel=info
     volumes:
-      - ./PDF:/app/uploads:ro
-      - ./backend/schedules.json:/app/schedules.json
+      - ./PDF:/app/books:ro
+      - uploads_data:/app/uploads
+      - ./data/schedules.json:/app/schedules.json
+      - ./backend/models:/app/models
     environment:
-      - QDRANT_URL=http://qdrant:6333
-      - CELERY_BROKER_URL=redis://redis:6379/0
-      - CELERY_RESULT_BACKEND=redis://redis:6379/0
-      - TELEGRAM_BOT_TOKEN=${TELEGRAM_BOT_TOKEN}
-      - TELEGRAM_CHAT_ID=${TELEGRAM_CHAT_ID}
+      QDRANT_URL: http://qdrant:6333
+      CELERY_BROKER_URL: redis://redis:6379/0
+      CELERY_RESULT_BACKEND: redis://redis:6379/0
+      TELEGRAM_BOT_TOKEN: ${TELEGRAM_BOT_TOKEN:-}
+      TELEGRAM_CHAT_ID: ${TELEGRAM_CHAT_ID:-}
+      GPT4ALL_MODEL: /app/models/llama-3.2-3b-instruct-q4_0.gguf
+      BOOKS_DIR: /app/books
+      UPLOAD_DIR: /app/uploads
+      SCHEDULES_PATH: /app/schedules.json
     depends_on:
       - qdrant
       - redis
     restart: unless-stopped
 
   celery-beat:
-    build: ./backend
+    build:
+      context: .
+      dockerfile: backend/Dockerfile
     command: celery -A app.tasks.celery_tasks beat --loglevel=info
     volumes:
-      - ./backend/schedules.json:/app/schedules.json
+      - ./data/schedules.json:/app/schedules.json
     environment:
-      - CELERY_BROKER_URL=redis://redis:6379/0
-      - CELERY_RESULT_BACKEND=redis://redis:6379/0
-      - TELEGRAM_BOT_TOKEN=${TELEGRAM_BOT_TOKEN}
-      - TELEGRAM_CHAT_ID=${TELEGRAM_CHAT_ID}
+      CELERY_BROKER_URL: redis://redis:6379/0
+      CELERY_RESULT_BACKEND: redis://redis:6379/0
+      TELEGRAM_BOT_TOKEN: ${TELEGRAM_BOT_TOKEN:-}
+      TELEGRAM_CHAT_ID: ${TELEGRAM_CHAT_ID:-}
+      SCHEDULES_PATH: /app/schedules.json
     depends_on:
       - redis
     restart: unless-stopped
@@ -73,3 +90,4 @@ services:
 volumes:
   qdrant_data:
   redis_data:
+  uploads_data: