docs(backlog): six VISION-gap PROPOSED pitches (B/C/A-residual/F)

VISION cross-checked against the tree: firmware menu, fingerprint,
doctor GPU/hibernate, rebuild-error hints, post-install hints and the
install contracts are shipped; the genuinely open gaps are filed as
PROPOSED with one-paragraph pitches — first-boot welcome card,
generation readability, battery health readout, doctor pre-activate
fail flag, dock life polish [big], hardware hall of fame.

Verification: V0 (backlog only).

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

agent/BACKLOG.md

@@ -107,6 +107,48 @@ high-ROI, etc.) live in the journal + ROADMAP — not here.*
   2026-07-10). Keep #59 commented install guidance; no
   `nomarchy.hardware.nvidia.*` until a hybrid maintainer + queue.
 
+- **First-boot welcome card** (`VISION § B`) — one dismissible "you're
+  set" toast on the first session (SUPER+M menu, SUPER+T themes,
+  SUPER+? keys, network pointer) — a notification, **not** a wizard.
+  Needs a one-shot marker that respects "no state outside the checkout":
+  either key off HM generation №1 or a `settings.firstBootShown` write.
+  Cost: one iteration (swaync notify + gate + VM assert).
+
+- **Generation readability** (`VISION § B`) — "what changed last
+  rebuild" in plain language: post-switch `nvd`/`nix store
+  diff-closures` summary (n packages up/down/added) surfaced as a toast
+  and/or a "What changed?" row beside System › Rollback. Rollback lists
+  generations but the story is incomplete. Cost: one iteration; VM
+  assert on the diff text.
+
+- **Battery health readout** (`VISION § C`) — report-only:
+  `cycle_count` + `charge_full/charge_full_design` % in a doctor
+  battery-health line (and optionally the Power menu). sysfs-gated so
+  desktops/VMs skip it. Cost: small, one iteration; extend
+  checks.doctor with a faked sysfs battery.
+
+- **Doctor first-boot section: pre-activate fail flag** (`VISION § A`
+  residual) — the installer already leaves
+  `/var/log/nomarchy-hm-preactivate.log` on the target when the theme
+  bake fails, but nothing on the installed system points at it. Doctor
+  gains a first-boot line: if the log shows failure and the HM
+  generation is missing, print the recovery one-liner. Cost: small.
+
+- **Dock life polish** (`VISION § C`) `[big]` — split before starting:
+  (a) clamshell — lid closed with external monitor connected must not
+  suspend (logind lidSwitchDocked/ExternalPower audit + display-profile
+  interplay), wake behaves; (b) default audio sink follows dock/undock
+  (switch to dock sink on plug, back to internal on unplug — WirePlumber
+  policy or a udev hook). Display profiles + auto-switch already exist;
+  this is the remaining edge-case pass.
+
+### Docs / narrative
+
+- **Hardware hall of fame** (`VISION § F`) — a HARDWARE.md
+  "install-tested machines" table (model, DMI, profile, date, notes)
+  seeded from the Latitude/dev-box sessions + a short "send your DMI
+  line" PR invite. Docs-only, one iteration.
+
 ### v1.0 pointer
 
 See **VISION**. Open PROPOSED: NVIDIA wrappers deferred past v1; IR