docs: merge/w3 gate head with the child-session work (§7).

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_d2453757b8a84fdbb4ee7c9e093141df

docs/wine-native.md

@@ -1845,10 +1845,13 @@ Heads:
   compositor (`$W/pfx-w3wl`). Output modes (Wine's EmulateModeset) and VkKeyScan done; W3.4 GL: opengl32 on gex-gl through winewayland, glcompat and glfast pass (34 of 40 on `$W/pfx-w3wl`). Wine fork head 74de38ed1ba (mw).
   **gate2 landed** (master 36f55bb6), and w3-gate1 (wp_viewporter, master
   1b4bd047, merged into merge/w3). **merge/w3 gate head** sent after
-  `$W/check-w3-gate.sh` (output `$W/w3chk.out`): crates green, elf-prov 5/5
+  `$W/check-w3-gate.sh` (output `$W/w3chk.out`; the child-session head on
+  master ac269692: `$W/w3chk2.out`, the same counts plus childgui and the
+  install-as-children leg): crates green, elf-prov 5/5
   native and in the browser, x86-programs 82, nt --no-cgen 83/83 on x86 and
   pfx-gui, cgen-prefix 83/83, wasm32 4/4 + busybox both, browser nt 49/49,
-  W3 i386 32 of 40 (null driver) and 34 of 40 (Wayland + GL). The old merge/elf-prov-gate is deleted. To
+  W3 i386 32 of 40 (null driver; 33 of 41 with childgui) and 34 of 40
+  (Wayland + GL); wineboot's install as children leaves the full registry. The old merge/elf-prov-gate is deleted. To
   rebuild after new dev commits: same path split (`git checkout <dev
   head> -- <paths>` per commit), rerun the checks, merge master once
   integ-g lands, send the head.