docs(rust): record the walk clean-up (PLAN_LAST_FIXES section 7)

A's two test grants deleted and revoked on both rigs. The Oxide rig loses the
walk owner, RgKitProbe and RgWalk, and gets RaidableBases' config back from
the walk's backup, followed by a restart (N2). The Steam key is left to the
org lead.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E14m6SuuY6i1vASFeGDBeY

modules/rust/PLAN_LAST_FIXES.md

@@ -2,8 +2,8 @@
 
 **Status:** **all six stages done, 2026-10-22.** Every fix in §3 is built, and §8 names the PR for each. The
 questions in §5 were answered on 2026-10-21, and the stage 4 decisions on 2026-10-22. **Stage 6 released
-protocol 14 and cut the Rust repositories and website over to `main` the same day (§8.1).** §7's clean-up comes
-next, on the org lead's go. Written 2026-10-21 after the end
+protocol 14 and cut the Rust repositories and website over to `main` the same day (§8.1).** §7's clean-up was
+done the same day; the org lead rotates the Steam key himself. Written 2026-10-21 after the end
 walk's in-game pass, as a plan. It continues
 [`PLAN_REDESIGNS.md`](PLAN_REDESIGNS.md) §9.1, which lists W1–W20 and N1 from the passes without a player. This
 document adds what the in-game pass found and puts everything in one list, in the order it should be built.
@@ -181,6 +181,16 @@ site, so neither is in this list:
 - **The rigs' bridge:** done in stage 6 (§8.1). Both rigs run the released files of bundle 2026.10.22.
 - **W21** landed in stage 1 (Module-Rust#54), so the walk site's hand patch is no longer needed.
 
+**Done 2026-10-22, except the Steam key, which the org lead rotates himself.**
+
+- **Walk site:** A's two grants were deleted (#5 `backpacks.use` on rust-oxide, from staff; #7 `backpacks.use`
+  on rust-carbon, an event give). A sync then applied one revoke on each rig, and both read in sync. The walk
+  site runs Module-Rust v0.5.0 byte for byte as released, so the W21 hand patch is gone with it.
+- **Oxide rig:** `removeowner` and `server.writecfg` left `users.cfg` empty. RgKitProbe and RgWalk were deleted,
+  and Oxide unloaded both. RaidableBases' config was restored from the walk's backup, so its only difference was
+  that Easy and Medium went back to 0. The server was then saved and restarted. RaidableBases 3.2.2 loaded with
+  no errors, the config was still at 0 after the boot, and neither walk plugin came back.
+
 ---
 
 ## 8. What was built