docs(agent): #103 confirmed on hardware — record the why, the inventory, and the size trade

Bernardo, live ISO 2026-07-14: still no browser, no office/utility apps —
"that makes a live iso useful". Not a new item; #103 already covers it and #94
already pointed here. Recorded against #103 instead of duplicating.

Captured the rationale, which outlives the app list: a live ISO is what
someone judges the distro by before installing, and what they boot to rescue a
machine that won't start — read a wiki page, save a document off a dying disk,
check webmail. The live session can do none of that today.

Verified the inventory rather than restating the report: eval of nomarchy-live's
HM packages + systemPackages gives chromium=no firefox=no libreoffice=no
amberol=no snapshot=no text-editor=no. It does carry terminal tooling (yazi,
btop, bat, fd, ripgrep, ghostty) plus zathura and imv, so the gap is precisely
the GUI apps a non-Nix user reaches for.

Flagged the part that makes this more than a package list: the ISO-size delta
is the real trade — both browsers plus libreoffice-fresh is plausibly +2 GB on
an image people download, and squashfs can't be trimmed afterwards. Listed the
options (both browsers / Chromium only / lighter office for the live medium)
and asked for measured deltas per option, noting that nomarchy-live and the
installed profile need not carry the same set — the live medium is the one
with a size ceiling.

V0: nix flake check --no-build passes. Backlog only.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

agent/BACKLOG.md

@@ -185,12 +185,39 @@ release it can be dropped in.
 
 ### 103. Live ISO baseline desktop applications
 
+**Confirmed again on hardware, Bernardo 2026-07-14** (live ISO): still no
+browser, and no office/utility apps — *"that makes a live iso useful"*. This
+is the item's **why**, and it is worth more than the app list: a live ISO is
+what someone judges the distro by before installing, and what a user boots to
+rescue a machine that will not start — reading a wiki page, saving a document
+off a dying disk, checking a webmail. Nomarchy's live session currently cannot
+do any of those.
+
+**Verified inventory 2026-07-14** (eval of `nomarchy-live`'s HM packages +
+`environment.systemPackages`): `chromium=no firefox=no libreoffice=no
+amberol=no snapshot=no text-editor=no`. What the live session *does* carry is
+terminal tooling (yazi, btop, bat, fd, ripgrep, ghostty) plus zathura (PDF)
+and imv (images) — so the gap is exactly the GUI apps a non-Nix user would
+reach for. #94 established this is *by design* (the live profile never named
+them) and pointed here for the fix; #94's own remaining V2 (chromium launches
+post-install) is a different path and stays separate.
+
 Make Chromium and Firefox, `libreoffice-fresh`, GNOME Text Editor, Amberol, and
 GNOME Snapshot explicitly available in the live profile and application
 launcher. Text Editor and Snapshot are the maintained gedit/Cheese successors;
 HTTP remains assigned to Chromium. Pass = all six launch in the live session
 and the resulting ISO-size delta is recorded.
 
+**Settle before starting (`[human]`, and the reason this is not just a package
+list):** the ISO-size delta is the whole trade — Firefox *and* Chromium *and*
+libreoffice-fresh is plausibly +2 GB on an image people download, and the
+squashfs cannot be trimmed after the fact. Options are (a) ship both browsers,
+(b) one browser (Chromium, since it already owns the HTTP mime default and the
+installed template), (c) a lighter office story than libreoffice-fresh for the
+live medium only. Record the measured delta per option rather than guessing;
+`nomarchy-live` and the installed `nomarchy` profile need not carry the same
+set, and the live medium is the one with a size ceiling.
+
 ### 104. Runtime Airplane mode
 
 Add Airplane mode under System connectivity controls. It must disable Wi-Fi