feat(doctor): read-only hardware health section (#44)

Six self-gating hardware checks in nomarchy-doctor, same ok/bad/warn/skip
+ one-fix-command contract: NetworkManager connectivity, default PipeWire
sink, VA-API/OpenGL smoke (only if vainfo/glxinfo present), fprintd unit +
enroll nudge, fwupd daemon + a soft warn when get-updates is non-empty,
and the laptop charge_control_end_threshold when a limit is set. Each
skips cleanly when its tool/service/device is absent, so the section
shrinks to the machine and never hard-fails on a missing feature.

Implemented by a worktree-isolated agent in parallel with the #46 install
VM; diff reviewed and cherry-picked here. Verified V0 (flake check) + V1
(nix build .#…pkgs.nomarchy-doctor — build-time bash -n + shellcheck),
re-run on main after cherry-pick; plus a read-only run on real hardware
(all six checks fired + self-gated). V2 (checks.doctor fakes) pending.

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

agent/BACKLOG.md

@@ -43,14 +43,14 @@ Core shipped 2026-07-09: self-gated **System ▸ Firmware** rofi row
    Waybar/updates-panel integration. (The doctor "updates available"
    check is item #44.) Spec: docs/HARDWARE.md §4.
 
-### 44. Doctor hardware section — read-only (`VISION § A`)
-Extend `nomarchy-doctor` with the same pass/fail + one-fix-command
-contract for: NetworkManager connectivity, default PipeWire sink,
-optional GPU smoke (`vainfo`/`glxinfo` if present), fprintd unit when
-fingerprint was enabled, fwupd active (+ warn if `get-updates`
-non-empty), laptop charge-threshold sysfs when a limit is set. Spec:
-docs/HARDWARE.md §10. Cost: doctor.sh sections; V1 in existing
-`checks.doctor` where fakes exist, rest V2/V3.
+### 44. Doctor hardware section — V2 checks.doctor extension
+Six read-only hardware checks shipped 2026-07-09 (NetworkManager,
+PipeWire sink, VA-API/GL smoke, fprintd, fwupd + get-updates warn,
+charge-threshold), all self-gating; V1 (doctor package builds:
+bash -n + shellcheck) + a real-hardware read-only smoke on the dev box.
+**Remaining V2:** extend the `checks.doctor` nixosTest with fakes to
+cover the new rows headlessly; pin the fwupd `get-updates` exit-code
+semantics (0 = updates) in that fake. Spec: docs/HARDWARE.md §10.
 
 ### 46. V2 verify: install swap=0 + unattended LUKS fail-closed (`208b8d4`)
 Pure `nix-instantiate` on disko subvols passed V0; **full install path

agent/JOURNAL.md

@@ -17,6 +17,25 @@ Template:
 
 ---
 
+## 2026-07-09 — #44 Doctor hardware section (delegated to worktree agent)
+- **Task:** NEXT #44 — read-only hardware checks in nomarchy-doctor
+  (HARDWARE.md §10). Delegated to a worktree-isolated opus agent so it ran
+  in parallel with the #46 install VM without KVM contention.
+- **Did:** Agent added six self-gating checks to `nomarchy-doctor.sh`
+  (NetworkManager, default PipeWire sink, VA-API/GL smoke, fprintd unit +
+  enroll nudge, fwupd active + get-updates warn, laptop charge-threshold),
+  each skipping cleanly when the tool/service/device is absent — same
+  ok/bad/warn/skip contract + one-fix-command style. Reviewed the diff and
+  cherry-picked onto main (branch `agent/doctor-hw-44`).
+- **Verified:** V0 flake check green; **V1** `nix build …pkgs.nomarchy-doctor`
+  (writeShellApplication runs bash -n + shellcheck at build) — re-run by me
+  on main after cherry-pick. Bonus: the agent ran the built binary on the
+  AMD dev box (read-only) — all six checks fired + self-gated correctly.
+- **Pending:** V2 — extend the `checks.doctor` nixosTest with fakes for the
+  new rows (VM; deferred while #46 held KVM). fwupd get-updates exit-code
+  semantics worth pinning in that fake.
+- **Next suggestion:** V2-verify #43+#44 together on the next VM pass.
+
 ## 2026-07-09 — #43 System ▸ Firmware fwupd menu (core shipped, V2 pending)
 - **Task:** NEXT #43 — surface fwupd/LVFS updates in the menu (VISION § A).
   Done while the VM was busy with #46, so V0/V1 only by design.

pkgs/nomarchy-doctor/nomarchy-doctor.sh

@@ -127,6 +127,129 @@ else
   skip "snapper (not enabled on this machine)"
 fi
 
+# ══ hardware ═════════════════════════════════════════════════════════
+# Every check below self-gates: it skips cleanly when the tool, service,
+# or device isn't present, so the section shrinks to fit the machine and
+# never fails just because a feature is absent. Still read-only.
+
+# ── network (NetworkManager) ─────────────────────────────────────────
+if command -v nmcli >/dev/null 2>&1; then
+  nmstate=$(nmcli -t -f STATE general status 2>/dev/null || true)
+  case "$nmstate" in
+    connected*) ok "NetworkManager: $nmstate" ;;
+    "")         skip "NetworkManager (no state reported)" ;;
+    *)          warn "NetworkManager state: $nmstate" \
+                     "connect in System › Network (or: nmcli device)" ;;
+  esac
+else
+  skip "NetworkManager (nmcli not present)"
+fi
+
+# ── default audio sink (PipeWire) ────────────────────────────────────
+# wpctl/pactl talk to the user's PipeWire session — only meaningful with
+# a user bus (not over bare SSH/root).
+if [ -n "$(systemctl --user is-system-running 2>/dev/null || true)" ]; then
+  if command -v wpctl >/dev/null 2>&1; then
+    if wpctl inspect @DEFAULT_AUDIO_SINK@ >/dev/null 2>&1; then
+      ok "default audio sink present"
+    else
+      warn "no default PipeWire sink" "pick one in System › Audio (or: wpctl status)"
+    fi
+  elif command -v pactl >/dev/null 2>&1; then
+    defsink=$(pactl get-default-sink 2>/dev/null || true)
+    if [ -n "$defsink" ] && [ "$defsink" != "@DEFAULT_SINK@" ]; then
+      ok "default audio sink: $defsink"
+    else
+      warn "no default audio sink" "pick one in System › Audio"
+    fi
+  else
+    skip "audio sink (no wpctl/pactl)"
+  fi
+else
+  skip "audio sink (no user session bus here)"
+fi
+
+# ── GPU acceleration smoke (only if the probes are installed) ────────
+if command -v vainfo >/dev/null 2>&1; then
+  if vainfo >/dev/null 2>&1; then
+    ok "VA-API acceleration works (vainfo)"
+  else
+    warn "vainfo present but VA-API probe failed" \
+         "check mkFlake.hardwareProfile / GPU drivers (or run: vainfo)"
+  fi
+else
+  skip "VA-API smoke (vainfo not installed)"
+fi
+if command -v glxinfo >/dev/null 2>&1; then
+  if [ -n "${WAYLAND_DISPLAY:-}${DISPLAY:-}" ]; then
+    if glxinfo -B >/dev/null 2>&1; then
+      ok "OpenGL renderer responds (glxinfo)"
+    else
+      warn "glxinfo present but GL probe failed" \
+           "check mkFlake.hardwareProfile / GPU drivers (or run: glxinfo -B)"
+    fi
+  else
+    skip "OpenGL smoke (no display attached)"
+  fi
+else
+  skip "OpenGL smoke (glxinfo not installed)"
+fi
+
+# ── fingerprint (only when fprintd is enabled) ───────────────────────
+if [ -n "$(systemctl list-unit-files fprintd.service --no-legend --plain 2>/dev/null || true)" ]; then
+  enrolled=""
+  if command -v fprintd-list >/dev/null 2>&1 && [ -n "${USER:-}" ]; then
+    enrolled=$(fprintd-list "$USER" 2>/dev/null || true)
+  fi
+  if [ -n "$enrolled" ] && ! printf '%s' "$enrolled" | grep -qi 'no fingers'; then
+    ok "fprintd enabled, fingerprint(s) enrolled for ${USER:-user}"
+  elif [ -n "$enrolled" ]; then
+    warn "fprintd enabled but no fingerprints enrolled" "enroll one: fprintd-enroll"
+  else
+    ok "fprintd unit installed (fingerprint enabled)"
+  fi
+else
+  skip "fingerprint (fprintd not enabled)"
+fi
+
+# ── firmware updates (fwupd) ─────────────────────────────────────────
+# fwupd is D-Bus-activated, so an idle daemon is normal, not a fault.
+# get-updates reads local metadata (no flashing); a hit is a soft warn.
+if command -v fwupdmgr >/dev/null 2>&1 \
+   && [ -n "$(systemctl list-unit-files fwupd.service --no-legend --plain 2>/dev/null || true)" ]; then
+  if systemctl is-active --quiet fwupd.service; then
+    ok "fwupd daemon active"
+  else
+    skip "fwupd daemon (idle — D-Bus-activated on demand)"
+  fi
+  if timeout 20 fwupdmgr get-updates >/dev/null 2>&1; then
+    warn "firmware updates are available" "review, then apply: fwupdmgr update"
+  else
+    ok "firmware up to date (no pending updates)"
+  fi
+else
+  skip "fwupd (not enabled / fwupdmgr absent)"
+fi
+
+# ── laptop battery charge threshold (only when a limit is set) ───────
+bat_seen=0; bat_limited=0
+for bat in /sys/class/power_supply/BAT*; do
+  f="$bat/charge_control_end_threshold"
+  [ -r "$f" ] || continue
+  bat_seen=1
+  lim=$(cat "$f" 2>/dev/null || true)
+  case "$lim" in
+    ''|*[!0-9]*) continue ;;
+  esac
+  if [ "$lim" -lt 100 ]; then
+    bat_limited=1
+    ok "$(basename "$bat") charge limit active at ${lim}%"
+  fi
+done
+if [ "$bat_seen" -eq 1 ] && [ "$bat_limited" -eq 0 ]; then
+  skip "battery charge limit (none set — charges to 100%)"
+fi
+
 # ── verdict ──────────────────────────────────────────────────────────
 echo
 if [ "$fails" -eq 0 ]; then