fix(llm): qwen3.5 think:false + num_ctx 8192 in allen Chat/Draft-Routen

Compliance Advisor, Drafting Agent und Validator haben nicht geantwortet
weil qwen3.5 standardmaessig im Thinking-Mode laeuft (interne Chain-of-
Thought > 2min Timeout). Keiner der Agenten benoetigt Thinking-Mode —
alle Aufgaben sind Chat/Textgenerierung/JSON-Validierung ohne tiefes
Reasoning. think:false sorgt fuer direkte schnelle Antworten.

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

admin-compliance/app/api/sdk/compliance-advisor/chat/route.ts

@@ -178,9 +178,11 @@ Der Nutzer hat "${countryLabel} (${validCountry})" gewaehlt.
         model: LLM_MODEL,
         messages,
         stream: true,
+        think: false,
         options: {
           temperature: 0.3,
           num_predict: 8192,
+          num_ctx: 8192,
         },
       }),
       signal: AbortSignal.timeout(120000),

admin-compliance/app/api/sdk/drafting-engine/chat/route.ts

@@ -88,9 +88,11 @@ export async function POST(request: NextRequest) {
         model: LLM_MODEL,
         messages,
         stream: true,
+        think: false,
         options: {
           temperature: mode === 'draft' ? 0.2 : 0.3,
           num_predict: mode === 'draft' ? 16384 : 8192,
+          num_ctx: 8192,
         },
       }),
       signal: AbortSignal.timeout(120000),

admin-compliance/app/api/sdk/drafting-engine/draft/route.ts

@@ -131,7 +131,8 @@ async function handleV1Draft(body: Record<string, unknown>): Promise<NextRespons
       model: LLM_MODEL,
       messages,
       stream: false,
-      options: { temperature: 0.15, num_predict: 16384 },
+      think: false,
+      options: { temperature: 0.15, num_predict: 16384, num_ctx: 8192 },
       format: 'json',
     }),
     signal: AbortSignal.timeout(180000),
@@ -327,7 +328,8 @@ async function callOllama(systemPrompt: string, userPrompt: string): Promise<str
         { role: 'user', content: userPrompt },
       ],
       stream: false,
-      options: { temperature: 0.15, num_predict: 4096 },
+      think: false,
+      options: { temperature: 0.15, num_predict: 4096, num_ctx: 8192 },
       format: 'json',
     }),
     signal: AbortSignal.timeout(120000),

admin-compliance/app/api/sdk/drafting-engine/validate/route.ts

@@ -187,7 +187,8 @@ export async function POST(request: NextRequest) {
             { role: 'user', content: crossCheckPrompt },
           ],
           stream: false,
-          options: { temperature: 0.1, num_predict: 8192 },
+          think: false,
+          options: { temperature: 0.1, num_predict: 8192, num_ctx: 8192 },
           format: 'json',
         }),
         signal: AbortSignal.timeout(120000),