chore: suppress dead_code warning on truncate_to_chars, fix test formatting

- types.rs: add #[allow(dead_code)] to truncate_to_chars now that
  data-layer truncation was removed in favor of flex-width rendering
- timeline_seed_tests.rs: reformat multi-line assert_eq for clarity
- ollama_mgmt.rs: collapse method chain formatting

src/core/ollama_mgmt.rs

@@ -68,10 +68,7 @@ pub fn find_ollama_binary() -> Option<PathBuf> {
         "/snap/bin/ollama",
     ];
 
-    WELL_KNOWN
+    WELL_KNOWN.iter().map(PathBuf::from).find(|p| p.is_file())
-        .iter()
-        .map(PathBuf::from)
-        .find(|p| p.is_file())
 }
 
 /// TCP-connect to Ollama's port. Tries all resolved addresses (IPv4/IPv6)

src/timeline/timeline_seed_tests.rs

@@ -288,7 +288,11 @@ fn test_seed_evidence_snippet_truncated() {
         if let TimelineEventType::NoteEvidence { snippet, .. } =
             &result.evidence_notes[0].event_type
         {
-            assert_eq!(snippet.chars().count(), 500, "snippet should preserve full body text");
+            assert_eq!(
+                snippet.chars().count(),
+                500,
+                "snippet should preserve full body text"
+            );
         } else {
             panic!("Expected NoteEvidence");
         }

src/timeline/types.rs

@@ -103,6 +103,7 @@ pub enum TimelineEventType {
 }
 
 /// Truncate a string to at most `max_chars` characters on a safe UTF-8 boundary.
+#[allow(dead_code)]
 pub(crate) fn truncate_to_chars(s: &str, max_chars: usize) -> String {
     let char_count = s.chars().count();
     if char_count <= max_chars {