feat(deploy): despliegue nativo Debian sin Docker

- Elimina todos los Dockerfiles y docker-compose.yml
- Elimina scripts Docker (start_docker, reset_and_deploy, deploy-clean)
- Agrega deploy/debian/ con despliegue nativo via systemd:
  - install.sh: instalacion completa en Debian (PostgreSQL, Redis,
    Qdrant binario, Go, Python venv, nginx, frontend compilado)
  - build.sh: recompila binarios Go y frontend sin reinstalar
  - env.example: variables de entorno sin referencias Docker
  - nginx.conf: sirve React estatico + proxy al API Go en localhost
  - systemd/*.service: 16 servicios (8 Go + 7 Python + Qdrant)

Todos los hostnames Docker (db, redis, qdrant) reemplazados por 127.0.0.1

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

rss-ingestor-go/Dockerfile

@@ -1,27 +0,0 @@
-FROM golang:alpine AS builder
-
-WORKDIR /app
-
-# Install git and SSL certs
-RUN apk add --no-cache git ca-certificates
-
-# Copy source code immediately
-COPY . .
-
-# Download dependencies
-RUN go mod tidy && go mod download
-
-# Build the Go app
-RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o rss-ingestor .
-
-# Final stage
-FROM alpine:latest  
-
-WORKDIR /root/
-
-# Copy the Pre-built binary file from the previous stage
-COPY --from=builder /app/rss-ingestor .
-COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
-
-# Command to run the executable
-CMD ["./rss-ingestor"]