feat(core): initialize project structure, postgres schema and docker setup

Dockerfile

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+FROM python:3.12-slim
+
+# Prevent Python from writing .pyc files & enable unbuffered logs
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    gcc \
+    libpq-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Python requirements
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application source code
+COPY . .
+
+CMD ["python", "main.py"]