- Refactored build_pipeline usage to ensure pipeline arguments are cloned.

- Introduced `reset_state` for clearing cached state between requests.
- Enhanced chat UI with model selector and dynamic model fetching.
- Improved error logging and detailed debug messages for chat request flows.
- Added fresh instantiation of `TextGeneration` to prevent tensor shape mismatches.

crates/inference-engine/src/text_generation.rs

@@ -117,6 +117,16 @@ impl TextGeneration {
         }
     }
     
+    // Reset method to clear state between requests
+    pub fn reset_state(&mut self) {
+        // Reset the primary device flag so we try the primary device first for each new request
+        if !self.device.is_cpu() {
+            self.try_primary_device = true;
+        }
+        // Clear the penalty cache to avoid stale cached values from previous requests
+        self.penalty_cache.clear();
+    }
+
     // Helper method to apply repeat penalty with caching for optimization
     pub fn apply_cached_repeat_penalty(
         &mut self,