refactor: move modal paste policy into editor input

src/session.rs

@@ -5,7 +5,7 @@ use std::{
 };
 
 use crate::{
-    editor::{Editor, Effect, Input, Invocation},
+    editor::{Editor, Input, Invocation},
     ruby::{Config, RubyPlugin, load_config},
 };
 
@@ -77,15 +77,6 @@ impl EditorSession {
         }
     }
 
-    /// Applies frontend effects, such as the TUI's existing Insert-mode paste.
-    /// Plugin results are applied internally by dispatch, with owner retirement
-    /// on rejection; frontend effects have no plugin owner to retire.
-    pub fn apply(&mut self, effects: Vec<Effect>) {
-        if let Err(error) = self.editor.apply(effects) {
-            self.editor.set_message(error);
-        }
-    }
-
     fn dispatch(&mut self, invocation: Invocation) {
         let result = match self.plugins.get_mut(&invocation.plugin) {
             Some(plugin) => plugin