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README.md

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+# Honeymoon trip site (Flask + plain HTML/CSS/JS)
+
+## What it is
+
+- Minimal Flask backend with session auth (credentials from `.env`)
+- Plain frontend (no framework)
+- SQLite persistence for:
+  - To-do list
+  - Expenses (JPY/EUR)
+- Designed to run **only inside Docker network** (behind your nginx/SSL reverse proxy)
+
+## Local setup
+
+1. Create `.env` from [`./.env.example`](./.env.example:1)
+2. Create the external docker network (once):
+
+```bash
+docker network create misc
+```
+
+3. Build and run:
+
+```bash
+docker compose up -d --build
+```
+
+The container exposes port `8000` **only to the `misc` network** (no host port published).
+
+## Reverse proxy (nginx)
+
+Point your nginx upstream to `honeymoon:8000` on the `misc` network.
+
+## Files
+
+- Backend: [`server.py`](server.py:1)
+- Templates: [`templates/index.html`](templates/index.html:1), [`templates/login.html`](templates/login.html:1)
+- Static: [`static/app.js`](static/app.js:1), [`static/style.css`](static/style.css:1)
+- Docker: [`Dockerfile`](Dockerfile:1), [`docker-compose.yml`](docker-compose.yml:1)