fix: Mouse Back/Forward support in webviews + few bugfixes (#3141)

- Add Mouse-3/Mouse-4 (back/forward) navigation support in webviews
- Add COLORTERM=truecolor env variable for terminal sessions
- Fix AI button width calculation when button is hidden
- Fix setSizeAndPosition animation on tab layout updates
- Increase DevInitTimeout for slower startup scenarios
- Update .gitignore and package-lock.json

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -39,3 +39,6 @@ test-results.xml
 docsite/
 
 .kilo-format-temp-*
+.superpowers
+docs/superpowers
+.claude

emain/emain-ipc.ts

@@ -236,6 +236,14 @@ export function initIpcHandlers() {
         menu.popup();
     });
 
+    electron.ipcMain.on("webview-mouse-navigate", (event: electron.IpcMainEvent, direction: string) => {
+        if (direction === "back") {
+            event.sender.navigationHistory.goBack();
+        } else if (direction === "forward") {
+            event.sender.navigationHistory.goForward();
+        }
+    });
+
     electron.ipcMain.on("download", (event, payload) => {
         const baseName = encodeURIComponent(path.basename(payload.filePath));
         const streamingUrl =

emain/preload-webview.ts

@@ -25,4 +25,15 @@ document.addEventListener("contextmenu", (event) => {
     // do nothing
 });
 
+document.addEventListener("mouseup", (event) => {
+    // Mouse button 3 = back, button 4 = forward
+    if (!event.isTrusted) {
+        return;
+    }
+    if (event.button === 3 || event.button === 4) {
+        event.preventDefault();
+        ipcRenderer.send("webview-mouse-navigate", event.button === 3 ? "back" : "forward");
+    }
+});
+
 console.log("loaded wave preload-webview.ts");

frontend/app/tab/tabbar.tsx

@@ -189,7 +189,8 @@ const TabBar = memo(({ workspace, noTabs }: TabBarProps) => {
         const addBtnWidth = getOuterWidth(addBtnRef.current);
         const appMenuButtonWidth = appMenuButtonRef.current?.getBoundingClientRect().width ?? 0;
         const workspaceSwitcherWidth = workspaceSwitcherRef.current?.getBoundingClientRect().width ?? 0;
-        const waveAIButtonWidth = waveAIButtonRef.current != null ? getOuterWidth(waveAIButtonRef.current) : 0;
+        const waveAIButtonWidth =
+            !hideAiButton && waveAIButtonRef.current != null ? getOuterWidth(waveAIButtonRef.current) : 0;
 
         const nonTabElementsWidth =
             windowDragLeftWidth +
@@ -276,7 +277,7 @@ const TabBar = memo(({ workspace, noTabs }: TabBarProps) => {
         // Check if all tabs are loaded
         const allLoaded = tabIds.length > 0 && tabIds.every((id) => tabsLoaded[id]);
         if (allLoaded) {
-            setSizeAndPosition(newTabId === null && prevAllLoadedRef.current);
+            setSizeAndPosition(false);
             saveTabsPosition();
             if (!prevAllLoadedRef.current) {
                 prevAllLoadedRef.current = true;

pkg/util/shellutil/shellutil.go

@@ -222,6 +222,9 @@ func WaveshellLocalEnvVars(termType string) map[string]string {
 	}
 	// these are not necessary since they should be set with the swap token, but no harm in setting them here
 	rtn["TERM_PROGRAM"] = "waveterm"
+	if os.Getenv("COLORTERM") == "" {
+		rtn["COLORTERM"] = "truecolor"
+	}
 	rtn["WAVETERM"], _ = os.Executable()
 	rtn["WAVETERM_VERSION"] = wavebase.WaveVersion
 	rtn["WAVETERM_WSHBINDIR"] = filepath.Join(wavebase.GetWaveDataDir(), WaveHomeBinDir)