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/admin/mcp_detail.html

@@ -27,18 +27,18 @@
       class="form-grid">
 
   <section class="card">
-    <h2 class="card__title">The server</h2>
+    <h2 class="card__title">{{ t("The server") }}</h2>
 
     <div class="field">
-      <label class="field__label" for="name">Name</label>
+      <label class="field__label" for="name">{{ t("Name") }}</label>
       <input class="input" id="name" name="name" value="{{ server.name }}" required
-             maxlength="120" placeholder="GitHub">
+             maxlength="120" placeholder="{{ t('GitHub') }}">
     </div>
 
     <div class="field">
-      <label class="field__label" for="slug">Identifier</label>
+      <label class="field__label" for="slug">{{ t("Identifier") }}</label>
       <input class="input input--mono" id="slug" name="slug" value="{{ server.slug }}" required
-             maxlength="24" pattern="[a-z0-9][a-z0-9_\-]*" placeholder="github">
+             maxlength="24" pattern="[a-z0-9][a-z0-9_\-]*" placeholder="{{ t('github') }}">
       <p class="field__hint">
         Prefixed onto every tool name this server offers, so that two servers
         both exposing <code>search</code> do not collide.
@@ -46,40 +46,37 @@
     </div>
 
     <div class="field">
-      <label class="field__label" for="url">Endpoint URL</label>
+      <label class="field__label" for="url">{{ t("Endpoint URL") }}</label>
       <input class="input input--mono" id="url" name="url" value="{{ server.url }}" required
-             placeholder="https://mcp.example.com/mcp">
-      <p class="field__hint">
-        The streamable-HTTP endpoint itself, the one that accepts a POST. A
-        server that answers with a redirect to somewhere else will be refused.
-      </p>
+             placeholder="{{ t('https://mcp.example.com/mcp') }}">
+      <p class="field__hint">{{ t("The streamable-HTTP endpoint itself, the one that accepts a POST. A server that answers with a redirect to somewhere else will be refused.") }}</p>
     </div>
 
     <div class="field">
-      <label class="field__label" for="headers">Extra headers</label>
+      <label class="field__label" for="headers">{{ t("Extra headers") }}</label>
       <textarea class="textarea input--mono" id="headers" name="headers" rows="3"
                 spellcheck="false">{{ headers_text }}</textarea>
       <p class="field__hint">One <code>Name: value</code> per line.</p>
     </div>
 
     <div class="field">
-      <label class="field__label" for="timeout">Timeout (seconds)</label>
+      <label class="field__label" for="timeout">{{ t("Timeout (seconds)") }}</label>
       <input class="input" id="timeout" name="timeout" value="{{ server.timeout }}"
              inputmode="numeric">
     </div>
 
     <div class="field">
-      <label class="field__label" for="max_chars">Most characters to keep per call</label>
+      <label class="field__label" for="max_chars">{{ t("Most characters to keep per call") }}</label>
       <input class="input" id="max_chars" name="max_chars" value="{{ server.max_chars }}"
              inputmode="numeric">
     </div>
   </section>
 
   <section class="card">
-    <h2 class="card__title">Credential</h2>
+    <h2 class="card__title">{{ t("Credential") }}</h2>
 
     <div class="field">
-      <label class="field__label" for="secret_placement">How it is sent</label>
+      <label class="field__label" for="secret_placement">{{ t("How it is sent") }}</label>
       <select class="select" id="secret_placement" name="secret_placement">
         {% for value, label in secret_placements %}
         <option value="{{ value }}" {{ 'selected' if value == server.secret_placement }}>
@@ -90,15 +87,15 @@
     </div>
 
     <div class="field">
-      <label class="field__label" for="secret_name">Header or parameter name</label>
+      <label class="field__label" for="secret_name">{{ t("Header or parameter name") }}</label>
       <input class="input input--mono" id="secret_name" name="secret_name"
              value="{{ server.secret_name }}" maxlength="120">
     </div>
 
     <div class="field">
-      <label class="field__label" for="secret">Secret</label>
+      <label class="field__label" for="secret">{{ t("Secret") }}</label>
       <input class="input input--mono" id="secret" name="secret" type="password"
-             autocomplete="off" placeholder="No secret set"
+             autocomplete="off" placeholder="{{ t('No secret set') }}"
              value="{{ unchanged if server.secret_encrypted else '' }}">
       <p class="field__hint">
         {% if server.secret_encrypted %}
@@ -113,11 +110,8 @@
 
   {% if tools %}
   <section class="card">
-    <h2 class="card__title">Tools it offers</h2>
-    <p class="field__hint">
-      Discovered at the last refresh. Untick one to withhold it — a tool this
-      server adds later is offered by default.
-    </p>
+    <h2 class="card__title">{{ t("Tools it offers") }}</h2>
+    <p class="field__hint">{{ t("Discovered at the last refresh. Untick one to withhold it — a tool this server adds later is offered by default.") }}</p>
 
     <input type="hidden" name="tool_choices" value="1">
     <div class="checkbox-row checkbox-row--stacked">
@@ -141,7 +135,7 @@
   </section>
   {% elif not is_new %}
   <section class="card">
-    <h2 class="card__title">Tools it offers</h2>
+    <h2 class="card__title">{{ t("Tools it offers") }}</h2>
     <p class="field__hint">
       Nothing discovered yet. Save, then press <strong>Test &amp; refresh</strong>
       on the <a href="/admin/mcp">list</a>.
@@ -150,11 +144,11 @@
   {% endif %}
 
   <section class="card">
-    <h2 class="card__title">Guidance</h2>
+    <h2 class="card__title">{{ t("Guidance") }}</h2>
 
     <div class="field">
       <textarea class="textarea" name="guidance" rows="4"
-                placeholder="- Use the GitHub tools for anything about our repositories."
+                placeholder="{{ t('- Use the GitHub tools for anything about our repositories.') }}"
                 >{{ server.guidance }}</textarea>
       <p class="field__hint">
         Added to the system message whenever any tool from this server is
@@ -170,18 +164,18 @@
   </section>
 
   <section class="card">
-    <h2 class="card__title">Availability</h2>
+    <h2 class="card__title">{{ t("Availability") }}</h2>
 
     <div class="field">
       <div class="checkbox-row">
         <label class="checkbox">
           <input type="checkbox" name="enabled" value="true" {{ 'checked' if server.enabled }}>
-          <span>Enabled — offered in chats</span>
+          <span>{{ t("Enabled — offered in chats") }}</span>
         </label>
         <label class="checkbox">
           <input type="checkbox" name="allow_private" value="true"
                  {{ 'checked' if server.allow_private }}>
-          <span>May reach private and loopback addresses</span>
+          <span>{{ t("May reach private and loopback addresses") }}</span>
         </label>
       </div>
       <p class="field__hint">
@@ -193,12 +187,12 @@
     <div class="field">
       <label class="checkbox">
         <input type="checkbox" name="public" value="true" {{ 'checked' if server.public }}>
-        <span>Available to everyone</span>
+        <span>{{ t("Available to everyone") }}</span>
       </label>
     </div>
 
     <div class="field">
-      <span class="field__label">Groups with access</span>
+      <span class="field__label">{{ t("Groups with access") }}</span>
       {% if groups %}
       <div class="checkbox-row">
         {% for group in groups %}
@@ -209,7 +203,7 @@
         </label>
         {% endfor %}
       </div>
-      <p class="field__hint">Ignored while the server is available to everyone.</p>
+      <p class="field__hint">{{ t("Ignored while the server is available to everyone.") }}</p>
       {% else %}
       <p class="field__hint">
         No groups yet — <a href="/admin/groups">create one</a> to restrict access.
@@ -218,7 +212,7 @@
     </div>
 
     <div class="field">
-      <label class="field__label" for="position">Position</label>
+      <label class="field__label" for="position">{{ t("Position") }}</label>
       <input class="input" id="position" name="position" value="{{ server.position }}"
              inputmode="numeric">
     </div>
@@ -232,9 +226,7 @@
     {% if not is_new %}
     <button class="btn btn--danger" type="submit" formnovalidate
             formaction="/admin/mcp/{{ server.id }}/delete"
-            data-confirm-button="Delete the server “{{ server.name }}”? Chats that used its tools keep their transcripts.">
-      Delete
-    </button>
+            data-confirm-button="Delete the server “{{ server.name }}”? Chats that used its tools keep their transcripts.">{{ t("Delete") }}</button>
     {% endif %}
   </div>
 </form>