M8: localisation groundwork - resource the file-kind labels, pseudo-locale check

CHANGELOG.md

@@ -24,8 +24,22 @@ upload needs a **higher `versionCode`** than every previous upload.
   device where the user had never declined anything. Reworded so it is true whether access
   was declined or simply never granted.
 
+- **The details sheet put untranslatable English on screen.** It rendered `FileKind.name`
+  directly, so "Type" read `directory`, `archive`, `apk` — enum constants rather than
+  labels, and impossible to translate. Every category now has a string resource and a
+  `FileKind.labelRes()` mapping alongside the existing `OperationKind.titleRes()`.
+
 ### Added
 
+- **M8 — localisation groundwork.** Every user-visible string lives in
+  `res/values/strings.xml` with real `<plurals>`, and an audit of the Compose sources found
+  exactly one genuine miss (above). The debug build type enables
+  `isPseudoLocalesEnabled`, so running it in English (XA) renders resource-backed text
+  accented and bracketed while anything hardcoded looks normal — a mechanical way to catch
+  the next one. Confirmed the pseudo-locale reaches the debug APK and not the release.
+  Byte units and the timestamp pattern stay unlocalised on purpose, documented in the
+  README along with the pseudo-locale check.
+
 - **M7 — on-device validation.** The app was run on a real Xiaomi M2101K7AG (Android 12,
   MIUI V140) rather than only emulator images. Verified on hardware: the first-run
   permission prompt, "All files access" granted while the app is alive (picked up on