feat(coding-agent): add treeFilterMode setting for /tree default filter (#1852)

Add configurable initial filter mode for the session tree navigator.
Users who always switch to a specific filter (e.g. no-tools via Ctrl+T)
can now set it as default in settings.

Same pattern as doubleEscapeAction (#404). Filter infra from #747.

packages/coding-agent/src/modes/interactive/components/settings-selector.ts

@@ -38,6 +38,7 @@ export interface SettingsConfig {
 	hideThinkingBlock: boolean;
 	collapseChangelog: boolean;
 	doubleEscapeAction: "fork" | "tree" | "none";
+	treeFilterMode: "default" | "no-tools" | "user-only" | "labeled-only" | "all";
 	showHardwareCursor: boolean;
 	editorPaddingX: number;
 	autocompleteMaxVisible: number;
@@ -60,6 +61,7 @@ export interface SettingsCallbacks {
 	onHideThinkingBlockChange: (hidden: boolean) => void;
 	onCollapseChangelogChange: (collapsed: boolean) => void;
 	onDoubleEscapeActionChange: (action: "fork" | "tree" | "none") => void;
+	onTreeFilterModeChange: (mode: "default" | "no-tools" | "user-only" | "labeled-only" | "all") => void;
 	onShowHardwareCursorChange: (enabled: boolean) => void;
 	onEditorPaddingXChange: (padding: number) => void;
 	onAutocompleteMaxVisibleChange: (maxVisible: number) => void;
@@ -200,6 +202,13 @@ export class SettingsSelectorComponent extends Container {
 				currentValue: config.doubleEscapeAction,
 				values: ["tree", "fork", "none"],
 			},
+			{
+				id: "tree-filter-mode",
+				label: "Tree filter mode",
+				description: "Default filter when opening /tree",
+				currentValue: config.treeFilterMode,
+				values: ["default", "no-tools", "user-only", "labeled-only", "all"],
+			},
 			{
 				id: "thinking",
 				label: "Thinking level",
@@ -379,6 +388,11 @@ export class SettingsSelectorComponent extends Container {
 					case "double-escape-action":
 						callbacks.onDoubleEscapeActionChange(newValue as "fork" | "tree");
 						break;
+					case "tree-filter-mode":
+						callbacks.onTreeFilterModeChange(
+							newValue as "default" | "no-tools" | "user-only" | "labeled-only" | "all",
+						);
+						break;
 					case "show-hardware-cursor":
 						callbacks.onShowHardwareCursorChange(newValue === "true");
 						break;