feat(tui): deduplicate model metadata and populate model details cache from session

- Add `seen_meta` set and `push_meta` helper to avoid duplicate entries when building model metadata strings.
- Extend metadata handling to include context length fallback, architecture/family information, embedding length, size formatting, and quantization details.
- Introduce `populate_model_details_cache_from_session` to load model details from the controller, with a fallback to cached details.
- Update `refresh_models` to use the new cache‑population method instead of manually clearing the cache.

crates/owlen-tui/src/ui.rs

@@ -2832,22 +2832,64 @@ fn build_model_selector_label(
     }
 
     let mut meta_parts: Vec<String> = Vec::new();
+    let mut seen_meta: HashSet<String> = HashSet::new();
+    let mut push_meta = |value: String| {
+        let trimmed = value.trim();
+        if trimmed.is_empty() {
+            return;
+        }
+        let key = trimmed.to_ascii_lowercase();
+        if seen_meta.insert(key) {
+            meta_parts.push(trimmed.to_string());
+        }
+    };
+
     if let Some(detail) = detail {
+        if let Some(ctx) = detail.context_length {
+            push_meta(format!("max tokens {}", ctx));
+        } else if let Some(ctx) = model.context_window {
+            push_meta(format!("max tokens {}", ctx));
+        }
+
         if let Some(parameters) = detail
             .parameter_size
             .as_ref()
             .or(detail.parameters.as_ref())
             && !parameters.trim().is_empty()
         {
-            meta_parts.push(parameters.trim().to_string());
+            push_meta(parameters.trim().to_string());
+        }
+
+        if let Some(arch) = detail.architecture.as_deref() {
+            let trimmed = arch.trim();
+            if !trimmed.is_empty() {
+                push_meta(format!("arch {}", trimmed));
+            }
+        } else if let Some(family) = detail.family.as_deref() {
+            let trimmed = family.trim();
+            if !trimmed.is_empty() {
+                push_meta(format!("family {}", trimmed));
+            }
+        } else if !detail.families.is_empty() {
+            let families = detail
+                .families
+                .iter()
+                .map(|f| f.trim())
+                .filter(|f| !f.is_empty())
+                .take(2)
+                .collect::<Vec<_>>()
+                .join("/");
+            if !families.is_empty() {
+                push_meta(format!("family {}", families));
+            }
+        }
+
+        if let Some(embedding) = detail.embedding_length {
+            push_meta(format!("embedding {}", embedding));
         }
 
         if let Some(size) = detail.size {
-            meta_parts.push(format_short_size(size));
-        }
-
-        if let Some(ctx) = detail.context_length {
-            meta_parts.push(format!("ctx {}", ctx));
+            push_meta(format_short_size(size));
         }
 
         if let Some(quant) = detail
@@ -2855,8 +2897,10 @@ fn build_model_selector_label(
             .as_ref()
             .filter(|q| !q.trim().is_empty())
         {
-            meta_parts.push(quant.trim().to_string());
+            push_meta(format!("quant {}", quant.trim()));
         }
+    } else if let Some(ctx) = model.context_window {
+        push_meta(format!("max tokens {}", ctx));
     }
 
     if let Some(desc) = model.description.as_deref() {