style: Apply cargo fmt and clippy fixes across codebase

Automated formatting and lint corrections from parallel agent work:

- cargo fmt: import reordering (alphabetical), line wrapping to respect
  max width, trailing comma normalization, destructuring alignment,
  function signature reformatting, match arm formatting
- clippy (pedantic): Range::contains() instead of manual comparisons,
  i64::from() instead of `as i64` casts, .clamp() instead of
  .max().min() chains, let-chain refactors (if-let with &&),
  #[allow(clippy::too_many_arguments)] and
  #[allow(clippy::field_reassign_with_default)] where warranted
- Removed trailing blank lines and extra whitespace

No behavioral changes. All existing tests pass unmodified.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/embedding/ollama.rs

@@ -67,15 +67,15 @@ impl OllamaClient {
     pub async fn health_check(&self) -> Result<()> {
         let url = format!("{}/api/tags", self.config.base_url);
 
-        let response = self
-            .client
-            .get(&url)
-            .send()
-            .await
-            .map_err(|e| LoreError::OllamaUnavailable {
-                base_url: self.config.base_url.clone(),
-                source: Some(e),
-            })?;
+        let response =
+            self.client
+                .get(&url)
+                .send()
+                .await
+                .map_err(|e| LoreError::OllamaUnavailable {
+                    base_url: self.config.base_url.clone(),
+                    source: Some(e),
+                })?;
 
         let tags: TagsResponse =
             response
@@ -111,12 +111,16 @@ impl OllamaClient {
             input: texts,
         };
 
-        let response = self.client.post(&url).json(&request).send().await.map_err(
-            |e| LoreError::OllamaUnavailable {
+        let response = self
+            .client
+            .post(&url)
+            .json(&request)
+            .send()
+            .await
+            .map_err(|e| LoreError::OllamaUnavailable {
                 base_url: self.config.base_url.clone(),
                 source: Some(e),
-            },
-        )?;
+            })?;
 
         let status = response.status();
         if !status.is_success() {