implement semantic titles for search and pagination requests

src/main.rs

@@ -319,7 +319,23 @@ fn list(state: &State, keyword: Option<&str>, page: Option<usize>) -> Result<Str
 
     let mut b = Vec::new();
 
-    b.push(format!("# {}\n", state.name));
+    b.push(format!("# {}\n", {
+        let mut h = String::new();
+
+        if let Some(k) = keyword {
+            h.push_str(k);
+            h.push_str(" • ");
+        }
+
+        if let Some(p) = page
+            && p > 1
+        {
+            h.push_str(&format!("Page {p} • "));
+        }
+
+        h.push_str(&state.name);
+        h
+    }));
 
     if let Some(ref description) = state.description {
         b.push(format!("{description}\n"));