fix(clippy): resolve remaining sort_by and iter_without_into_iter warnings (#554)

- cortex-prompt-harness/builder.rs: use sort_by_key with Reverse for priority sorting
- cortex-tui-input/reader.rs: add IntoIterator impl for &InputReader

Author: echobt

cortex-tui-framework/crates/cortex-tui-input/src/reader.rs

@@ -503,6 +503,15 @@ impl InputReader {
     }
 }
 
+impl<'a> IntoIterator for &'a InputReader {
+    type Item = InputResult<Event>;
+    type IntoIter = EventIterator<'a>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        self.iter()
+    }
+}
+
 /// Helper function to run a closure with terminal input configured.
 ///
 /// This function:

src/cortex-prompt-harness/src/builder.rs

@@ -162,7 +162,7 @@ impl SystemPromptBuilder {
 
         // Sort sections by priority and add them
         let mut sections: Vec<_> = self.sections.values().collect();
-        sections.sort_by(|a, b| b.priority.cmp(&a.priority));
+        sections.sort_by_key(|s| std::cmp::Reverse(s.priority));
 
         for section in sections {
             if section.enabled {