UI: Avatar entfernt, Streaming-Topbar mit Labels

- DK-Avatar aus Header entfernt (kein Zweck)
- Streaming-Felder haben jetzt Ueberschriften: Name, Titel, Passwort, Qualitaet
- Passwort-Feld von 140px auf 180px verbreitert
- Topbar aligned an Feldunterkante (flex-end)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/plugins/streaming/streaming.css

@@ -9,12 +9,27 @@
 /* ── Top Bar ── */
 .stream-topbar {
   display: flex;
-  align-items: center;
+  align-items: flex-end;
   gap: 10px;
   margin-bottom: 16px;
   flex-wrap: wrap;
 }
 
+.stream-field {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+.stream-field-grow { flex: 1; min-width: 180px; }
+.stream-field-label {
+  font-size: 11px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.5px;
+  color: var(--text-faint);
+  padding-left: 2px;
+}
+
 .stream-input {
   padding: 10px 14px;
   border: 1px solid var(--bg-tertiary);
@@ -25,11 +40,13 @@
   outline: none;
   transition: border-color var(--transition);
   min-width: 0;
+  width: 100%;
+  box-sizing: border-box;
 }
 .stream-input:focus { border-color: var(--accent); }
 .stream-input::placeholder { color: var(--text-faint); }
 .stream-input-name { width: 150px; }
-.stream-input-title { flex: 1; min-width: 180px; }
+.stream-input-title { width: 100%; }
 
 .stream-btn {
   padding: 10px 20px;
@@ -405,11 +422,12 @@
 
 /* ── Password input in topbar ── */
 .stream-input-password {
-  width: 140px;
+  width: 180px;
 }
 
 .stream-select-quality {
   width: 200px;
+  box-sizing: border-box;
   padding: 10px 14px;
   border: 1px solid var(--bg-tertiary);
   border-radius: var(--radius);