perf: upgrade OpenAI models gpt-4o/4o-mini -> gpt-5-nano/gpt-5-mini

- openai.model.name: gpt-4o-mini -> gpt-5-nano (bash.05/bash.40, 3x cheaper input)
- openai.model.name.text: gpt-4o -> gpt-5-mini (bash.25/.00, 10x cheaper input)
- targeting.ai.audience-model: gpt-4o -> gpt-5-mini
- targeting.ai.budget-model: gpt-4o-mini -> gpt-5-nano
- targeting.ai.creatives-model: gpt-4o -> gpt-5-mini
- fix: max_tokens -> max_completion_tokens (GPT-5 requires new param name)

src/main/java/kz/konturai/parser/service/OpenAIAnalyticsService.java

@@ -83,7 +83,7 @@ public class OpenAIAnalyticsService {
         Map<String, Object> requestBody = new HashMap<>();
         requestBody.put("model", model);
         requestBody.put("messages", messages);
-        requestBody.put("max_tokens", maxTokens);
+        requestBody.put("max_completion_tokens", maxTokens);
         requestBody.put("temperature", temperature);
         return requestBody;
     }

src/main/resources/application.properties

@@ -45,8 +45,8 @@ ollama.responseTimeoutMs=18000000
 # --- OpenAI ---
 openai.api.key=${OPENAI_API_KEY}
 openai.api.url=https://api.openai.com/v1/chat/completions
-openai.model.name=gpt-4o-mini
-openai.model.name.text=gpt-4o
+openai.model.name=gpt-5-nano
+openai.model.name.text=gpt-5-mini
 openai.timeoutMs=90000
 openai.timeoutMs.instruction=180000
 openai.retry.maxAttempts=3
@@ -95,11 +95,11 @@ deep-research.api.url=${DEEP_RESEARCH_API_URL}
 deep-research.api.timeout=1800000
 
 # --- Targeting AI models ---
-targeting.ai.audience-model=gpt-4o
+targeting.ai.audience-model=gpt-5-mini
 targeting.ai.max-audience-tokens=2500
-targeting.ai.budget-model=gpt-4o-mini
+targeting.ai.budget-model=gpt-5-nano
 targeting.ai.max-budget-tokens=1000
-targeting.ai.creatives-model=gpt-4o
+targeting.ai.creatives-model=gpt-5-mini
 targeting.ai.max-creatives-tokens=2000
 
 # =============================================================================