docs(agent): V2 results for doctor-float + offline test-install

Doctor-float PASS (kitty classed window). Offline test-install PASS:
nomarchy-live ISO name, first-boot themed desktop without autogenerated
banner (pre-activate bake). Disk-filter fixture for fd0 exclusion.

agent/JOURNAL.md

@@ -19,6 +19,28 @@ Template:
 
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+## 2026-07-15 — V2 verification of fix batches (doctor-float + test-install)
+- **Task:** V2-test shipped items that admit VM harnesses (#95 doctor,
+  #123 bake, #112/#124/#125 install path).
+- **Did / Verified:**
+  - **V2 doctor-float (boreal):** `nix build --impure -f tools/doctor-float.nix`
+    PASS. Class `com.nomarchy.doctor`, floating, centered; client
+    `title=kitty`. Screenshots:
+    `/tmp/nomarchy-v2-doctor/{desktop-before,doctor-float}.png`. SoftGL
+    window body is blank (known softGL terminal paint); float/class
+    contract holds.
+  - **V2 test-install.sh (offline LUKS+swap):** machine-checkable PASS
+    (~28 min). Artifacts `/tmp/nomarchy-v2-batch/`:
+    - ISO: `result/iso/nomarchy-live-….iso` (#125)
+    - `first-boot.png`: themed Boreal desktop + Waybar, **no** red
+      autogenerated banner, no login prompt → HM pre-activate (#123)
+      succeeded (visual)
+    - install completed poweroff; LUKS boot + passphrase works
+  - **Disk filter fixture:** fd0/loop excluded, vda/sda kept (#112 logic)
+- **Pending:** V3 on Acer/XPS; mount installed disk for log/flake-url
+  strings needs root (skipped). Doctor softGL paint is not a product fail.
+- **Next suggestion:** continue backlog or hardware V3.
+
 ## 2026-07-15 — #108 keybinds cheatsheet groups + completeness check
 - **Task:** BACKLOG #108 — group SUPER+? as Window/Workspace/Menu/Media;
   automated completeness.