Initial commit: Project foundation

- Backend: Go API server with Gin framework
- Frontend: React setup (placeholder)
- ML Service: Python FastAPI skeleton
- Docker Compose: Full stack configuration
- Database: PostgreSQL schema with migrations
- Documentation: Implementation plan and README

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

backend/Dockerfile

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+# Build stage
+FROM golang:1.21-alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache git
+
+# Set working directory
+WORKDIR /app
+
+# Copy go mod files
+COPY go.mod go.sum* ./
+
+# Download dependencies
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o server ./cmd/server
+
+# Final stage
+FROM alpine:latest
+
+# Install ca-certificates for HTTPS
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /root/
+
+# Copy binary from builder
+COPY --from=builder /app/server .
+
+# Copy configuration
+COPY --from=builder /app/configs ./configs
+
+# Expose port
+EXPOSE 8080
+
+# Run the application
+CMD ["./server"]