UI: Spinner statt LADEN-Text, Pills unter Header in Einstellungen

- ViewFallback: dezenter, zentrierter Spinner statt kaum lesbarem
  "LADEN…"-Text zwischen lazy-loaded Views
- Einstellungen: Pill-Navigation jetzt konsistent unter dem Header
  (zuvor lagen die Pills bei allen Tabs ausser "Mein Profil" darüber)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src-tauri/Cargo.lock

@@ -75,18 +75,6 @@ version = "1.0.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
 
-[[package]]
-name = "rapport"
-version = "0.6.0"
-dependencies = [
- "log",
- "serde",
- "serde_json",
- "tauri",
- "tauri-build",
- "tauri-plugin-log",
-]
-
 [[package]]
 name = "arrayvec"
 version = "0.7.6"
@@ -2760,6 +2748,18 @@ dependencies = [
  "rand_core 0.5.1",
 ]
 
+[[package]]
+name = "rapport"
+version = "0.6.0"
+dependencies = [
+ "log",
+ "serde",
+ "serde_json",
+ "tauri",
+ "tauri-build",
+ "tauri-plugin-log",
+]
+
 [[package]]
 name = "raw-window-handle"
 version = "0.6.2"