chore(i18n): pull filter names into the listing from the filter picker

i18n/cs/camera.ftl

@@ -311,7 +311,7 @@ metainfo-description-usage = Otevřete aplikaci a začněte zachycovat okamžiky
 metainfo-description-features-title = Klíčové funkce:
 metainfo-feature-capture = Pořizování fotografií a videí: vysoká kvalita a hardwarová akcelerace
 metainfo-feature-qr = Skener QR kódů: otevírání odkazů, připojení k Wi-Fi a další
-metainfo-feature-filters = 14 kreativních filtrů: Černobílý, Sépie, Živý, Noir, Skica a další
+metainfo-feature-filters = 14 kreativních filtrů: { filter-mono }, { filter-sepia }, { filter-vivid }, { filter-noir }, { filter-pencil } a další
 metainfo-feature-virtual-camera = Virtuální kamera: používejte filtrovaný obraz kamery při videohovorech a v dalších aplikacích
 metainfo-feature-multi-camera = Podpora více kamer: snadné přepínání mezi kamerami a mikrofony
 metainfo-caption-photo-tools = Režim fotografie s nabídkou nástrojů

i18n/en/camera.ftl

@@ -748,9 +748,9 @@ metainfo-feature-modes = Photo, video and timelapse modes, with a self timer and
 metainfo-feature-controls = Manual controls: exposure, ISO, shutter, focus and white balance
 # Feature list item. QR and WiFi are product names and stay as they are.
 metainfo-feature-qr = QR code scanner: open links, connect to WiFi, and more
-# Feature list item. The filter names are the same ones used in the app, so
-# translate them the same way there.
-metainfo-feature-filters = 14 creative filters: Mono, Sepia, Vivid, Noir, Pencil Sketch, and more
+# Feature list item. The filter names are pulled straight from the filter
+# picker above, so translate them there and they follow here on their own.
+metainfo-feature-filters = 14 creative filters: { filter-mono }, { filter-sepia }, { filter-vivid }, { filter-noir }, { filter-pencil }, and more
 # Feature list item.
 metainfo-feature-virtual-camera = Virtual camera: use your filtered camera feed in video calls and other apps
 # Feature list item.

resources/io.github.cosmic_utils.camera.metainfo.xml

@@ -39,7 +39,7 @@
       <li xml:lang="cs">Skener QR kódů: otevírání odkazů, připojení k Wi-Fi a další</li>
       <li xml:lang="uk">Сканер QR-кодів: відкривайте посилання, підключайтеся до Wi-Fi та багато іншого</li>
       <li xml:lang="zh-CN">二维码扫描器：打开链接、连接 WiFi 等</li>
-      <li>14 creative filters: Mono, Sepia, Vivid, Noir, Pencil Sketch, and more</li>
+      <li>14 creative filters: Mono, Sepia, Vivid, Noir, Pencil, and more</li>
       <li xml:lang="cs">14 kreativních filtrů: Černobílý, Sépie, Živý, Noir, Skica a další</li>
       <li>Virtual camera: use your filtered camera feed in video calls and other apps</li>
       <li xml:lang="cs">Virtuální kamera: používejte filtrovaný obraz kamery při videohovorech a v dalších aplikacích</li>

scripts/gen-metadata.py

@@ -34,10 +34,6 @@
 # the ones generated from here. These prefixes mark the latter.
 KEY_PREFIXES = ("desktop-", "metainfo-")
 
-# In-app keys the metadata reuses instead of duplicating, either as a value of
-# their own or through a { key } reference inside another string.
-SHARED_KEYS = ("camera",)
-
 # Desktop entry key -> Fluent key.
 DESKTOP_KEYS = {
     "Name": "camera",
@@ -82,14 +78,18 @@
 
 
 def read_translations() -> dict[str, dict[str, str]]:
-    """Return {fluent_key: {lang: value}} for the metadata keys of every language."""
+    """Return {fluent_key: {lang: value}} for every string of every language.
+
+    In-app keys are read too, not just the metadata ones: the metadata maps
+    some of them directly (`camera` becomes the launcher name) and references
+    others inside its own strings, so they all have to be resolvable.
+    """
     out: dict[str, dict[str, str]] = {}
     for path in sorted(I18N.glob("*/camera.ftl")):
         lang = path.parent.name
         for line in path.read_text(encoding="utf-8").splitlines():
             match = re.match(r"^([a-z0-9-]+) = (.*)$", line)
-            if match and (match.group(1).startswith(KEY_PREFIXES)
-                          or match.group(1) in SHARED_KEYS):
+            if match:
                 out.setdefault(match.group(1), {})[lang] = match.group(2).strip()
     return out
 
@@ -230,18 +230,23 @@ def main() -> int:
     if not translations:
         sys.exit(f"error: no metadata strings found in {I18N.relative_to(ROOT)}/*/camera.ftl")
 
-    source_keys = {k for k, v in translations.items() if SOURCE_LANG in v}
     expected = set(DESKTOP_KEYS.values())
     for mapping in (METAINFO_HEAD, METAINFO_DESCRIPTION, METAINFO_SCREENSHOTS):
         expected.update(k for keys in mapping.values() for k in keys)
+    # Only the prefixed keys and the mapped ones are this script's business;
+    # the rest of the file is the application's own strings.
+    source_keys = {k for k, v in translations.items() if SOURCE_LANG in v
+                   and (k.startswith(KEY_PREFIXES) or k in expected)}
     if missing := expected - source_keys:
         sys.exit(f"error: missing from i18n/{SOURCE_LANG}/camera.ftl: {', '.join(sorted(missing))}")
     if extra := source_keys - expected:
         sys.exit(f"error: unmapped keys in i18n/{SOURCE_LANG}/camera.ftl: {', '.join(sorted(extra))}")
 
     resolve_references(translations)
 
-    langs = sorted({lang for v in translations.values() for lang in v if lang != SOURCE_LANG})
+    langs = sorted({lang for v in translations.values() for lang in v
+                    if lang != SOURCE_LANG and any(
+                        lang in translations[k] for k in expected)})
     print(f"Generating metadata for: {', '.join(langs)}")
 
     write_if_changed(DESKTOP, render_desktop(translations, DESKTOP.read_text(encoding="utf-8")))