KB: step-3 closeout -- miniconsole verification + SDK vendor note

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/GLASS_COCKPIT.md

@@ -106,3 +106,30 @@ survives. NOTE: each `[FAIL]` marks a missing L4 override — reconstruction bac
    window; all boot lines present.
 Deferred to the user (visual-only): panel/plasma appearance vs vRIO on screen, XInput stick
 feel, `L4PADFLIP` polarity.
+
+## 2026-07-17 — Step 3: the miniconsole — DONE + verified (commit c4ca87b)
+
+**Architecture: the console stays a wire peer.** `game/glass/btl4fe.*` (GDI catalog menu + the
+console-shape egg writer) and `btl4console.*` (the LocalConsole marshal: a worker-thread console
+CLIENT speaking the `tools/btconsole.py` protocol verbatim — 1040-byte chunked
+`ReceiveEggFileMessage`, 20s settle, `RunMission`×2, stay connected, own the clock,
+`StopMission`(id 6)@expiry; logs `content\marshal.log`). The engine runs the 100% stock console
+ladder — ZERO engine hooks; the planned `L4APP.H` setters proved unnecessary (launches pass real
+argv on relaunch). WinMain: one gated block — zero-mission-arg glass launch → menu → relaunch
+self with mission argv (`BT_FE_EGG/PODS/SECS` arm the marshal; `BT_FE_LOOP` returns exits to the
+menu; menu relaunches CLEAR the handoff — the leak re-armed a marshal in cycle test 1).
+
+**Verified (synthetic menu drives, all autonomous):**
+- Golden egg: `frontend.egg` section sequence + line offsets IDENTICAL to `MP.EGG`; ordinal
+  pages verbatim; GDI name-glyph pages in MP.EGG framing (32/8 rows, 16 bytes/line).
+- Solo cycle: menu → egg → relaunch → marshal → stock ladder → mission RUNS (58+ ticks) → 60s
+  clock → stop → menu returns with clean env.
+- **HOST LAN 2-node:** peer started manually (`-net 1601`); menu-hosted launch → marshal feeds
+  BOTH pods (2-pilot egg, 10 chunks each) → both in-mission (65/18 ticks) → stop both → host
+  returns to the menu, peer idles at console-wait.
+
+## 2026-07-17 — Step 4 pre: Steamworks SDK 1.64 vendored (commit 23c0019)
+
+Official Valve zip (provided by Cyd at the repo root), extracted to
+`extern/steamworks_sdk_164/` and trimmed to `public/` + `redistributable_bin/` + Readme
+(12.5 MB); zip removed. Consumed only under `-DBT_STEAM=ON`.