API-Keys: Source-URL, einheitliches Status-Schema, passive Usage-Erfassung, Usage-Bars

- SourceUrl-Feld in api_keys: GitHub-URL bei adoptierten Scan-Keys gespeichert
- HandleAdopt: Name = user/repo (aus URL extrahiert), SourceUrl = vollständige URL
- Status-Schema vereinheitlicht: überall 'valid' statt 'ok'/'usage_limited'
- AnthropicKeyChecker.ExtractMetaFromHeaders(): passive Header-Auswertung
- AnthropicService: TryUpdateKeyMeta() nach jedem Chat-Request (fire-and-forget)
- DatabaseService: UpdateApiKeyMetaByToken() für passive Updates per Token
- Frontend: formatKeyStatus() zentrale Status-Labels für API-Keys + Scanned-Keys
- Frontend: createUsageBadge() zweizeiliger Balken (Sitzung/Woche) mit Farbstufen
- CSS: Usage-Badge mit Track/Fill, warn (>=70%) und danger (>=90%) Klassen

Endpoints/ApiKeysEndpoint.cs

@@ -49,6 +49,7 @@ public static class ApiKeysEndpoint
             k.Usage7d,
             k.Usage5h,
             k.CheckedAt,
+            k.SourceUrl,
             k.CreatedAt,
             k.UpdatedAt
         });
@@ -205,15 +206,16 @@ public static class ApiKeysEndpoint
         }
 
         var result = await AnthropicKeyChecker.CheckKeyAsync(httpFactory, existing.ApiKey);
+        var dbStatus = (result.Status == "ok" || result.Status == "usage_limited") ? "valid" : result.Status;
 
         // Metadaten in DB speichern
-        await db.UpdateApiKeyMeta(keyId, result.Status, result.Plan, result.Usage7d, result.Usage5h);
+        await db.UpdateApiKeyMeta(keyId, dbStatus, result.Plan, result.Usage7d, result.Usage5h);
 
         await ctx.Response.WriteAsJsonAsync(new
         {
-            status = (result.Status == "ok" || result.Status == "usage_limited") ? "ok" : "error",
+            status = dbStatus,
             message = result.Message,
-            keyType = result.Plan,
+            plan = result.Plan,
             result.IsSubscription,
             result.Usage7d,
             result.Usage5h,
@@ -324,10 +326,16 @@ public static class ApiKeysEndpoint
             return;
         }
 
-        // URL als Titel verwenden, Metadaten übertragen
-        var title = !string.IsNullOrWhiteSpace(sk.SourceUrl)
-            ? sk.SourceUrl.Replace("https://github.com/", "")
-            : $"Scan: {sk.Plan}";
+        // Name: user/repo aus URL extrahieren, SourceUrl: vollständige URL
+        var sourceUrl = !string.IsNullOrWhiteSpace(sk.SourceUrl) ? sk.SourceUrl : null;
+        var title = $"Scan: {sk.Plan ?? "Unknown"}";
+        if (sourceUrl != null)
+        {
+            var path = sourceUrl.Replace("https://github.com/", "");
+            var parts = path.Split('/');
+            if (parts.Length >= 2)
+                title = parts[0] + "/" + parts[1];
+        }
 
         var now = DateTime.UtcNow.ToString("o");
         var record = new ApiKeyRecord
@@ -342,6 +350,7 @@ public static class ApiKeysEndpoint
             Usage7d = sk.Usage7d,
             Usage5h = sk.Usage5h,
             CheckedAt = sk.CheckedAt,
+            SourceUrl = sourceUrl,
             CreatedAt = now,
             UpdatedAt = now
         };