fix: resolve permission modal issues with successful operations

Fixes #113 - EnterPlanMode/ExitPlanMode infinite permission loops

This commit addresses multiple related issues with the permission system:

1. Added system tool filtering to sibling tools loop to prevent
   EnterPlanMode/ExitPlanMode from appearing in permission modals

2. Skip permission modal processing entirely when operations succeed
   (subtype == "success"), since tools were already approved and executed

3. Emit proper state change before early return to prevent Hikari
   from getting stuck in "typing" state

The early return happens after all stats, costs, and achievements
are processed, so no data tracking is affected.

✨ This issue was fixed with help from Hikari~ 🌸

src-tauri/src/wsl_bridge.rs

@@ -1218,6 +1218,12 @@ fn process_json_line(
             if let Some(denials) = permission_denials {
                 // Only process if there are actually denials
                 if !denials.is_empty() {
+                    // Skip permission prompts if the result was successful - tools were already approved
+                    if subtype == "success" {
+                        emit_state_change(app, state, None, conversation_id.clone());
+                        return Ok(());
+                    }
+
                     let mut regular_permission_requests = Vec::new();
 
                     // Get denied tool IDs for later comparison
@@ -1310,6 +1316,10 @@ fn process_json_line(
                 // Check for sibling tools that may have been cancelled
                 // Add them to the permission batch so they can be approved together
                 for tool_use in captured_pending_tools.iter() {
+                    // Skip system tools that should never require permission
+                    if is_system_tool(&tool_use.tool_name) {
+                        continue;
+                    }
                     // Only add tools that weren't explicitly denied (these are likely cancelled siblings)
                     if !denied_tool_ids.contains(&tool_use.tool_use_id) {
                         let description = format_tool_description(&tool_use.tool_name, &tool_use.tool_input);