fix(i18n): re-extract pot for new drop-zone msgids + DE translations

The drop-zone-mode commit (453cc96) added two new format-list strings
to index.html — `_('Supported: JPG · PNG · WebP · TIFF')` and
`_('MP4 · MOV · AVI · MKV · WebM')` — but the locale catalogs were
not regenerated. CI's i18n drift-check caught it: pot still mirrored
main's 608-line state without the new keys.

This commit:
- Runs `pybabel extract` to refresh `locale/messages.pot` (now 624 lines).
- Runs `pybabel update` to add the two msgids to `de.po` and `en.po`.
- Fixes Babel's fuzzy auto-match (it pulled the long-format DE string
  into the short-format slot) and writes the correct translations:
  "MP4 · MOV · AVI · MKV · WebM" → "MP4 · MOV · AVI · MKV · WebM"
  "Supported: JPG · PNG · WebP · TIFF" → "Unterstützt: JPG · PNG · WebP · TIFF"
- Re-compiles `.mo` files (185/185 DE translated).

Verified: drift-check exit 0, pytest 465 passed, ruff clean.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: MrChengLen

locale/de/LC_MESSAGES/messages.mo

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FileMorph VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2026-05-07 15:22+0200\n"
+"POT-Creation-Date: 2026-05-08 15:52+0200\n"
 "PO-Revision-Date: 2026-05-08 11:00+0200\n"
 "Last-Translator: FileMorph <hallo@filemorph.io>\n"
 "Language: de\n"
@@ -347,6 +347,9 @@ msgstr "Nur JPEG / WebP."
 msgid "Language"
 msgstr "Sprache"
 
+msgid "MP4 · MOV · AVI · MKV · WebM"
+msgstr "MP4 · MOV · AVI · MKV · WebM"
+
 msgid "MP4 · MOV · AVI · MKV · WebM · MP3 · WAV · FLAC · OGG · M4A"
 msgstr "MP4 · MOV · AVI · MKV · WebM · MP3 · WAV · FLAC · OGG · M4A"
 
@@ -504,6 +507,9 @@ msgstr ""
 msgid "Supported: HEIC · JPG · PNG · WebP · BMP · TIFF · GIF"
 msgstr "Unterstützt: HEIC · JPG · PNG · WebP · BMP · TIFF · GIF"
 
+msgid "Supported: JPG · PNG · WebP · TIFF"
+msgstr "Unterstützt: JPG · PNG · WebP · TIFF"
+
 msgid "Switch to English"
 msgstr "Zu Englisch wechseln"
 

locale/de/LC_MESSAGES/messages.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FileMorph VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2026-05-07 15:22+0200\n"
+"POT-Creation-Date: 2026-05-08 15:52+0200\n"
 "PO-Revision-Date: 2026-05-07 13:43+0200\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language: en\n"
@@ -323,6 +323,9 @@ msgstr ""
 msgid "Language"
 msgstr ""
 
+msgid "MP4 · MOV · AVI · MKV · WebM"
+msgstr ""
+
 msgid "MP4 · MOV · AVI · MKV · WebM · MP3 · WAV · FLAC · OGG · M4A"
 msgstr ""
 
@@ -468,6 +471,9 @@ msgstr ""
 msgid "Supported: HEIC · JPG · PNG · WebP · BMP · TIFF · GIF"
 msgstr ""
 
+msgid "Supported: JPG · PNG · WebP · TIFF"
+msgstr ""
+
 msgid "Switch to English"
 msgstr ""
 

locale/en/LC_MESSAGES/messages.mo

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FileMorph VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2026-05-07 15:22+0200\n"
+"POT-Creation-Date: 2026-05-08 15:52+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -322,6 +322,9 @@ msgstr ""
 msgid "Language"
 msgstr ""
 
+msgid "MP4 · MOV · AVI · MKV · WebM"
+msgstr ""
+
 msgid "MP4 · MOV · AVI · MKV · WebM · MP3 · WAV · FLAC · OGG · M4A"
 msgstr ""
 
@@ -467,6 +470,9 @@ msgstr ""
 msgid "Supported: HEIC · JPG · PNG · WebP · BMP · TIFF · GIF"
 msgstr ""
 
+msgid "Supported: JPG · PNG · WebP · TIFF"
+msgstr ""
+
 msgid "Switch to English"
 msgstr ""