Translate the whole site to English: English routes with 301 redirects from the Dutch paths, English UI, docs, seeds and captions, one-time live content migration

molodetz/templates/docs/prose/architecture.md

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+# Architecture
+
+FastAPI with Jinja2, rendered on the server. SQLite through `dataset`, synchronous and deliberately without a threadpool. Sessions with PBKDF2-SHA256 passwords.
+
+## Layers
+
+- `molodetz/database/`: one file per subject, always import from the package root.
+- `molodetz/routers/`: mirrors the URL path.
+- `molodetz/services/`: background services under one supervisor with a file lock.
+- `molodetz/templates/`: one Jinja environment in `templating.py`.
+
+## Deleting
+
+Everything is soft deleted with `deleted_at` and `deleted_by`. Only cleanup jobs delete for real.
+
+## Static files
+
+Assets go through `static_url()`, which versions them under `/static/v<version>/`. Those are immutably cacheable for a year.