fix(external-editor): Move panel to Operations Hub, fix config key lookup

- Moved External Editor panel from AI Settings to External Tools tab in Operations Hub
- Fixed default_editor lookup to use nested [tools.default_editor] structure
- Added example entries for vscode, notepadpp, 10xEditor, rider, sublime
- Improved panel UI with section header and clearer formatting

src/gui_2.py

@@ -871,8 +871,6 @@ class App:
       self._render_system_prompts_panel()
      if imgui.collapsing_header("RAG Settings"):
       self._render_rag_panel()
-     if imgui.collapsing_header("External Editor"):
-      self._render_external_editor_panel()
      self._render_agent_tools_panel()
     imgui.end()
    if self.ui_separate_usage_analytics and self.show_windows.get("Usage Analytics", False):
@@ -974,6 +972,9 @@ class App:
       if not self.ui_separate_external_tools:
        if imgui.begin_tab_item("External Tools")[0]:
         self._render_external_tools_panel()
+        imgui.separator()
+        imgui.text("")
+        self._render_external_editor_panel()
         imgui.end_tab_item()
       if imgui.begin_tab_item("Workspace Layouts")[0]:
        imgui.text("Experimental: Auto-switch layout by Tier")
@@ -4841,23 +4842,33 @@ def hello():
   launcher = get_default_launcher()
   editors = launcher.config.editors
   default_name = launcher.config.default_editor
-  imgui.text("Configured Editors:")
+  imgui.text_colored(vec4(0.7, 0.7, 0.7, 1), "External Editor for Diff Viewing")
+  imgui.separator()
   if not editors:
    imgui.text_colored(vec4(1, 0.5, 0, 1), "  No editors configured")
+   imgui.text("")
    imgui.text("Add editors in config.toml:")
-   imgui.text("  [tools.text_editors]")
-   imgui.text('  vscode = "C:\\\\path\\\\to\\\\code.exe"')
+   imgui.text_colored(vec4(0.5, 0.8, 1, 1), '  [tools.text_editors.vscode]')
+   imgui.text('  path = "C:\\\\path\\\\to\\\\code.exe"')
+   imgui.text('  diff_args = ["--diff"]')
+   imgui.text("")
+   imgui.text_colored(vec4(0.5, 0.8, 1, 1), '  [tools.text_editors.notepadpp]')
+   imgui.text('  path = "C:\\\\Program Files\\\\Notepad++\\\\notepad++.exe"')
+   imgui.text('  diff_args = ["-multiInst", "-nosession"]')
+   imgui.text("")
+   imgui.text("Then set default in [tools.default_editor]")
   else:
+   imgui.text("Configured Editors:")
    for name, editor in editors.items():
     is_default = name == default_name
     marker = " (default)" if is_default else ""
-    imgui.text(f"  {name}{marker}: {editor.path}")
+    imgui.text_colored(vec4(0.3, 0.9, 0.3, 1), f"  {name}{marker}")
+    imgui.text(f"    path: {editor.path}")
     if editor.diff_args:
-     imgui.text(f"    diff args: {editor.diff_args}")
-  imgui.text("")
-  imgui.text("Configuration:")
-  imgui.text("  Global: config.toml [tools.text_editors]")
-  imgui.text("  Project: manual_slop.toml default_editor")
+     imgui.text(f"    diff: {editor.diff_args}")
+   imgui.text("")
+   imgui.text_colored(vec4(0.7, 0.7, 0.7, 1), "Config: config.toml [tools.text_editors]")
+   imgui.text_colored(vec4(0.7, 0.7, 0.7, 1), "Override: manual_slop.toml default_editor")
 
  def _render_agent_tools_panel(self) -> None:
   if imgui.collapsing_header("Active Tool Presets & Biases", imgui.TreeNodeFlags_.default_open):