feat: Enhance classification logic for balanced political analysis (#…

…6941)

metrics

Purpose: Updated classification thresholds for key political analysis
metrics to ensure balanced representation across categories. From a
political analyst perspective, this adjustment aims to:

- Provide a more nuanced understanding of political careers by refining
thresholds for `experience_level`, `experience_breadth`,
`leadership_profile`, `role_stability`, and `career_phase`.
- Broaden inclusivity for categories like `PARTY_LEADERSHIP` and
`MID_CAREER` to capture diverse political trajectories.
- Better distinguish between levels of leadership and role stability for
accurate profiling.
- Ensure the framework reflects real-world political progression and
specialization trends, enhancing analytical insights.

These changes will improve the granularity and usability of the dataset
for political analysis and strategy development.

model.internal.application.user.impl/src/main/java/com/hack23/cia/model/internal/application/data/politician/impl/ViewRiksdagenPoliticianExperienceSummary.java

@@ -177,7 +177,9 @@ public enum ExperienceBreadth {
         /** The medium. */
         MEDIUM,
         /** The low. */
-        LOW
+        LOW,        
+        /** The very low. */
+        VERY_LOW
     }
 
     /**