v0.247.0: i18n spike — the dashboard can speak English, Hungarian byte-identical

Message bundles (internal/i18n) expanded into templates before parsing, one
template set per language. Launcher, /backups, /apps/<slug> and the layout
converted; household language setting, POST /settings/language, ?lang= override,
report field. Parity test against fixtures captured from unconverted templates;
copy gates read templates expanded; new i18n_missing_gate.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

controller/scripts/native_confirm_gate.py

@@ -11,6 +11,9 @@ Exit 1 if any native confirm(/prompt(/alert( call remains in the templates.
 """
 import io, os, re, sys
 
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+import i18n_bundle  # noqa: E402
+
 ROOTS = [
     os.path.join("internal", "web", "templates"),
     os.path.join("internal", "setup", "templates"),
@@ -41,10 +44,14 @@ def main():
     for root in ROOTS:
         for path in _html_files(root):
             fn = os.path.relpath(path, root)
-            for lineno, line in enumerate(io.open(path, encoding="utf-8"), 1):
-                if NATIVE.search(line):
-                    total += 1
-                    print("%s:%d  %s" % (fn, lineno, line.strip()[:120].encode('ascii', 'backslashreplace').decode()))
+            # v0.247.0: judge each language's expansion -- JS copy lives in the i18n bundle now.
+            seen = set()
+            for lang in i18n_bundle.LANGS:
+                for lineno, line in enumerate(i18n_bundle.read_template(path, lang).split("\n"), 1):
+                    if NATIVE.search(line) and (lineno, line) not in seen:
+                        seen.add((lineno, line))
+                        total += 1
+                        print("%s:%d [%s]  %s" % (fn, lineno, lang, line.strip()[:120].encode('ascii', 'backslashreplace').decode()))
     if total:
         print("NATIVE CONFIRM GATE FAILED: %d native confirm()/prompt()/alert() call(s) remain" % total)
         sys.exit(1)