diff --git a/docs/PLAN.md b/docs/PLAN.md
index 5c3e282..bac5e75 100644
--- a/docs/PLAN.md
+++ b/docs/PLAN.md
@@ -355,17 +355,28 @@ XP consumes pre-rendered wallpapers.
     `RIOJoy\vendor\` (ViGEmBus installer for 10/11; RioGamepadXP.sys + INF
     for XP; **.NET 4.0 Full + KB2468871 redistributables** so an offline XP
     cabinet needs nothing else — adds ~70 MB, XP can't download anymore) +
-    `VERSION.txt` + README-DEPLOY.
+    `VERSION.txt` + README-DEPLOY (payload-internal detail doc).
+  - **`README.txt`** (zip root): written for a person installing on a
+    standalone computer — which Windows versions are supported, what the
+    two .bat entry points are and which one to run (`install.bat` for a
+    standalone machine; `postinstall.bat` is the cabinet launcher's hook),
+    that all prerequisites are bundled for offline install, and where the
+    app lands. Plain ASCII so XP-era Notepad renders it cleanly.
   - **`postinstall.bat`** (zip root, unattended): the TeslaConsole/launcher
     entry point, as today — detects the OS (`ver` → 5.1 = XP, 10.x = modern),
     installs the matching prereqs (ViGEmBus silently via the existing
     PowerShell on 10/11; .NET 4.0 + KB2468871 + driver INF on XP), and wires
-    the matching app flavor. No prompts, idempotent.
+    the matching app flavor. No prompts, idempotent. **Its final step
+    deletes `install.bat` and the root `README.txt`** — on cabinet deploys
+    the zip extracts into `C:\games`, and only launcher-managed files may
+    stay at that root (`del` tolerating already-missing files, so re-runs
+    stay idempotent).
   - **`install.bat`** (zip root, freestanding computers): same OS detection
     and prereq install, plus what a machine without the launcher needs —
     Start Menu/desktop shortcut to the right flavor's exe (still no logon
     auto-start; starting RIOJoy stays deliberate). Pure cmd.exe on the XP
-    path; may call PowerShell only on the 10/11 path.
+    path; may call PowerShell only on the 10/11 path. Leaves the README in
+    place (it's the standalone machine's documentation).
   - `pre-uninstall.bat` / uninstall mirror both scenarios. Release the one
     zip to Gitea per the established process.
 - **8E — Verification:** full suite stays net48-hosted (xUnit needs