feat: close #94 installed chromium; silence Hyprland update-news

Re-boot of the offline install disk proves the residual #94 pass:
chromium on PATH, https/html mime → chromium-browser.desktop, and the
browser window actually opens. Kill ecosystem update-news / donation nag
so first boot is not Hyprland's "updated to …!" dialog.

agent/BACKLOG.md

@@ -31,31 +31,6 @@ post-boot sessions). Preserve separation: the installer bake failure and the
 flake pin are different root causes even when they show up on the same machine.
 (Terminal / Ghostty-on-Acer → shipped as Kitty-only, #95.)
 
-### 94. Live ISO/install: no default browser observed
-
-**Progress 2026-07-13:** installed path VERIFIED at V1 — the exact HM
-generation the ISO pins for offline installs contains the chromium binary,
-`chromium-browser.desktop`, and all three HTTP/HTML handlers
-(mime.nix sets them; template ships the package). The Acer sighting is the
-LIVE session, which shipped NO browser by design (mime defaults name chromium,
-GIO skips it while absent).
-
-**Update 2026-07-14:** the live half is **gone** — #103 shipped, so the live
-session now carries chromium (plus office/editor/music/camera) on PATH and in
-the launcher, and `checks.live-baseline-apps` asserts HTTPS still resolves to
-`chromium-browser.desktop` *and* that the entry it names is actually present —
-the exact "mime names a package nothing ships" trap this item found. What
-remains here is only the **installed** path: a test-install VM run proving
-chromium launches post-install (chain #97's Bluetooth-click V2 into the same
-run).
-
-Chromium is the resolved default-browser decision and is present in the
-downstream template, but this hardware pass found no usable default browser.
-Trace the live-to-installed Home Manager path rather than merely checking the
-template source. Pass = Chromium launches after installation and HTTP/HTTPS
-mime defaults resolve to `chromium-browser.desktop` (and the intended live-ISO
-browser posture is explicit).
-
 ### 98. Boreal: button text renders black and is difficult to read
 
 Audit GTK button foreground/background contrast under Boreal, including the

agent/JOURNAL.md

@@ -19,6 +19,20 @@ Template:
 
 ---
 
+## 2026-07-15 — Close #94 installed chromium + kill Hyprland update-news
+- **Task:** Residual #94 (chromium on installed path) + first-boot polish
+  seen while probing.
+- **Did:** Re-booted leftover offline install disk (`target.img`). Probe:
+  Chromium 150 on PATH, https/html → `chromium-browser.desktop`, Chromium
+  window opens (`about:blank` + keyring prompt). Closed #94. Added
+  `ecosystem.no_update_news` + `no_donation_nag` (every first boot showed
+  “Hyprland updated to 0.55.x!”).
+- **Verified:** **V2** install re-boot screenshots `/tmp/nomarchy-v2-94/`;
+  V0 `nix flake check --no-build`; HM gen conf contains ecosystem keys.
+- **Pending:** V3 optional on Acer (hardware already had no browser on
+  *live* before #103; installed path is the one that mattered).
+- **Next suggestion:** #107 state.json rename, or #98 if screenshot lands.
+
 ## 2026-07-15 — File #127 docked idle blackout (no code)
 - **Task:** Bernardo: docked laptop idle → black screens; external KB/mouse
   no wake; unplug external did not restore panel; Caps Lock still worked.