mind: restore age_out_images and publish_context_state after turns

These were called from handle_turn_result before the refactor but
got lost during the MindState migration. Re-add them in the turn
completion path. Delete the trivial refresh_context_state wrapper.

Co-Authored-By: Kent Overstreet <kent.overstreet@linux.dev>

src/agent/mod.rs

@@ -851,10 +851,6 @@ impl Agent {
     }
 
     /// Called after any change to context state (working stack, etc).
-    fn refresh_context_state(&mut self) {
-        self.publish_context_state();
-    }
-
     /// Load working stack from disk.
     fn load_working_stack(&mut self) {
         if let Ok(data) = std::fs::read_to_string(working_stack::file_path()) {
@@ -886,7 +882,7 @@ impl Agent {
     /// Replace base64 image data in older messages with text placeholders.
     /// Keeps the 2 most recent images live (enough for motion/comparison).
     /// The tool result message before each image records what was loaded.
-    fn age_out_images(&mut self) {
+    pub fn age_out_images(&mut self) {
         // Find image entries newest-first, skip 1 (caller is about to add another)
         let to_age: Vec<usize> = self.context.entries.iter().enumerate()
             .rev()

src/mind/mod.rs

@@ -24,10 +24,9 @@ use tokio::sync::{mpsc, Mutex};
 
 use crate::agent::{Agent, TurnResult};
 use crate::agent::api::ApiClient;
-use crate::agent::api::types as api_types;
 use crate::config::{self, AppConfig, SessionConfig};
 use crate::user::{self as tui};
-use crate::user::ui_channel::{self, ContextInfo, StatusInfo, StreamTarget, UiMessage};
+use crate::user::ui_channel::{self, StatusInfo, StreamTarget, UiMessage};
 use crate::subconscious::learn;
 
 /// Compaction threshold — context is rebuilt when prompt tokens exceed this.
@@ -373,6 +372,13 @@ impl Mind {
                         crate::user::event_loop::cmd_switch_model(&self.agent, &name, &self.ui_tx).await;
                     }
 
+                    // Post-turn maintenance
+                    {
+                        let mut ag = self.agent.lock().await;
+                        ag.age_out_images();
+                        ag.publish_context_state();
+                    }
+
                     cmds.push(MindCommand::Compact);
                     if !self.config.no_agents {
                         cmds.push(MindCommand::Score);

src/user/event_loop.rs

@@ -13,7 +13,6 @@ use tokio::sync::Mutex;
 
 use crate::agent::Agent;
 use crate::agent::api::ApiClient;
-use crate::config::SessionConfig;
 use crate::user::{self as tui, HotkeyAction};
 use crate::user::ui_channel::{self, UiMessage};