feat(bisaya-course): refine phase 4 didactics and enhance course content generation

- Corrected grammatical errors and improved the phrasing in the BISAYA_PHASE4_DIDACTICS, ensuring clarity and accuracy in the learning materials.
- Updated the course content generation script to include lessons from phase 5, enhancing the overall structure and flow of the course.
- Introduced a new vocabulary course content synchronization process, improving the integration of vocabulary resources across different modules.
- Enhanced the VocabService to dynamically adjust temperature settings based on the mode, optimizing response generation for different contexts.
- Added new localized titles and vocabulary entries in multiple languages, enriching the learning experience for users.

frontend/src/views/settings/LanguageAssistantView.vue

@@ -40,7 +40,7 @@
                 </div>
                 <p class="language-assistant-settings__preset-hint">
                     Der Ollama-Preset setzt <code>http://127.0.0.1:11434/v1</code> und
-                    <code>qwen2.5:7b-instruct</code>. Kein API-Key erforderlich.
+                    <code>qwen2.5:3b-instruct</code>. Kein API-Key erforderlich.
                 </p>
             </div>
 
@@ -137,7 +137,7 @@ export default {
         applyOllamaPreset() {
             this.form.enabled = true;
             this.form.baseUrl = 'http://127.0.0.1:11434/v1';
-            this.form.model = 'qwen2.5:7b-instruct';
+            this.form.model = 'qwen2.5:3b-instruct';
             this.form.apiKey = '';
             this.form.clearKey = false;
         },