docs: keep Chinese README and refresh screenshots

scripts/installer.nsh

@@ -50,7 +50,7 @@
     DetailPrint `Closing running "${PRODUCT_NAME}"...`
 
     # Kill ALL processes whose executable lives inside $INSTDIR.
-    # This covers ClawX.exe (multiple Electron processes), openclaw-gateway.exe,
+    # This covers the app executable (multiple Electron processes), openclaw-gateway.exe,
     # python.exe (skills runtime), uv.exe (package manager), and any other
     # child process that might hold file locks in the installation directory.
     #
@@ -83,7 +83,7 @@
       ${nsProcess::Unload}
   ${endIf}
 
-  ; Even if ClawX.exe was not detected as running, orphan child processes
+  ; Even if the app executable was not detected as running, orphan child processes
   ; (python.exe, openclaw-gateway.exe, uv.exe, etc.) from a previous crash
   ; or unclean shutdown may still hold file locks inside $INSTDIR.
   ; Unconditionally kill any process whose executable lives in the install dir.
@@ -92,7 +92,7 @@
   Pop $1
 
   ; Always kill known process names as a belt-and-suspenders approach.
-  ; PowerShell path-based kill may miss processes if the old ClawX was installed
+  ; PowerShell path-based kill may miss processes if the old app was installed
   ; in a different directory than $INSTDIR (e.g., per-machine -> per-user migration).
   ; taskkill is name-based and catches processes regardless of their install location.
   nsExec::ExecToStack 'taskkill /F /T /IM "${APP_EXECUTABLE_FILENAME}"'