chore: upgrade to Python 3.13, node:24 LTS, nginx:1.28 stable

Author: nikolay-e

Dockerfile

@@ -1,7 +1,7 @@
 # Life-as-Code Health Analytics Platform - Multi-Stage Build
 
 # --- Builder Stage (base) ---
-FROM python:3.11-slim AS builder
+FROM python:3.13-slim AS builder
 
 ARG VERSION=dev
 ARG BUILD_DATE
@@ -31,7 +31,7 @@ FROM builder AS bot-builder
 RUN pip install --no-cache-dir '.[agent,bot]'
 
 # --- Runtime Base ---
-FROM python:3.11-slim AS runtime-base
+FROM python:3.13-slim AS runtime-base
 
 ARG VERSION=dev
 ARG BUILD_DATE
@@ -49,6 +49,7 @@ RUN mkdir -p /app/data /app/logs /app/models && \
 
 ENV PYTHONPATH=/app/src \
     PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
     APP_VERSION=${VERSION} \
     BUILD_DATE=${BUILD_DATE} \
     VCS_REF=${VCS_REF}

frontend/Dockerfile

@@ -1,5 +1,5 @@
 # Build stage
-FROM node:20-alpine AS builder
+FROM node:24-alpine AS builder
 
 ARG VITE_APP_VERSION=dev
 ARG VITE_APP_ENVIRONMENT=development
@@ -20,7 +20,7 @@ RUN VITE_APP_VERSION=${VITE_APP_VERSION} \
     npm run build
 
 # Production stage
-FROM nginx:alpine
+FROM nginx:1.28-alpine
 
 LABEL org.opencontainers.image.title="Life-as-Code Frontend" \
       org.opencontainers.image.description="React frontend for health analytics platform"

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.black]
 line-length = 88
-target-version = ['py311']
+target-version = ['py313']
 include = '\.pyi?$'
 
 [tool.isort]
@@ -9,7 +9,7 @@ line_length = 88
 
 [tool.ruff]
 line-length = 88
-target-version = "py311"
+target-version = "py313"
 
 [tool.ruff.lint]
 select = [
@@ -28,7 +28,7 @@ ignore = [
 ]
 
 [tool.mypy]
-python_version = "3.11"
+python_version = "3.13"
 warn_return_any = true
 warn_unused_configs = true
 disallow_untyped_defs = false