The interface speaks Slovak

969 strings, an instance default and a per-person choice, and no half-done corner:
the admin prose is translated too. Design and reasoning: LLeMbas.wiki/Translations.

KEYED BY THE ENGLISH SENTENCE

A missing entry renders the key, which is the English -- so an untranslated string
looks as it always did, an English instance is byte-for-byte 1.6.0, and a
half-finished catalogue is a half-translated page rather than a page of dotted key
names. The cost is that editing an English sentence orphans its translation
silently, which is what tests/test_translations.py asserts in both directions.

No gettext: .po -> .mo is a build step and this project does not have one.

A JINJA GLOBAL, AND THEREFORE A CONTEXTVAR

`t()` is a global for the reason `brand` already documents -- render() is bypassed
by 25 TemplateResponse calls and 8 get_template().render() calls, the latter being
the SSE frames, which have no Request at all. A global is bound once at import and
the language is per person, so the active language is a ContextVar set per request.

🚨 `get_current_user` had to become `async def`. FastAPI runs a sync dependency in a
threadpool, and anyio copies the context in and discards it on the way out -- so
the language was set where nothing could see it and every page rendered in the
instance's language whatever anybody had chosen, with no error anywhere.

NOT TRANSLATED, ON PURPOSE

Everything a model reads: the 60 prompt fragments, and the dates in harness.py,
schedule/runner.py and schedule/compile.py. Only `i18n.stamp` is localised, and
only where a person reads it -- with the *format* translatable as well as the
words, because "26. septembra 2026" is a different pattern rather than the same one
with different words in it. A process locale is not an option: global, not
thread-safe, two people's pages at once.

A second fragment telling models to answer in the reader's language was written
during this work and removed: `core.style` has said it since long before, and
test_an_empty_override_turns_a_fragment_off caught the duplicate.

THE BULK PASS

1213 sites wrapped by a one-off script that only touched patterns it could not
misread. It got three wrong in a way that mattered -- `t('…')` inside `attr="…"`
where the sentence held an apostrophe, closing the Jinja string and 500ing two
pages whose partials no test renders. tests/test_translations.py now compiles all
110 templates. It also wrapped the product's own name, an SSH key header, a
keystroke hint and an example URL, all taken back out: a string is not
translatable just because it is a string.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/lembas/web/templates/chat/_edit_form.html

@@ -14,17 +14,17 @@
   <div class="msg__main">
     <header class="msg__meta">
       <span class="msg__author">{{ user.name or "You" }}</span>
-      <span class="msg__model">editing</span>
+      <span class="msg__model">{{ t("editing") }}</span>
     </header>
 
     <form class="edit-form"
           hx-post="/api/chats/{{ chat.id }}/messages/{{ message.id }}/edit"
           hx-target="#thread" hx-swap="innerHTML"
           hx-confirm="Rewind here? The {{ following }} message{{ '' if following == 1 else 's' }} after this one will be deleted."
-          data-confirm-title="Rewind the conversation"
-          data-confirm-label="Rewind and send">
+          data-confirm-title="{{ t('Rewind the conversation') }}"
+          data-confirm-label="{{ t('Rewind and send') }}">
       <textarea class="textarea" name="content" rows="3" data-autosize
-                data-max-height="320" aria-label="Edit message"
+                data-max-height="320" aria-label="{{ t('Edit message') }}"
                 autofocus>{{ message.content }}</textarea>
 
       <div class="btn-row">
@@ -34,9 +34,7 @@
         </button>
         <button class="btn" type="button"
                 hx-get="/api/chats/{{ chat.id }}/messages/{{ message.id }}/cancel-edit"
-                hx-target="#msg-{{ message.id }}" hx-swap="outerHTML">
-          Cancel
-        </button>
+                hx-target="#msg-{{ message.id }}" hx-swap="outerHTML">{{ t("Cancel") }}</button>
         {% if following %}
         <span class="text-xs faint">
           {{ following }} later message{{ '' if following == 1 else 's' }} will be discarded.