feat(doctor): #77 hibernate/sleep section (VISION § C)

nomarchy-doctor gains a read-only hibernate/sleep section (the highest-ROI
Day-2 gap, a natural #76 follow-on): resume device on the kernel cmdline
(+ resume_offset for a swapfile), disk swap >= RAM, zram active, and any
suspend/hibernate error in the previous boot's kernel log. Self-gates
(skip on swap=0) and emits only ok/warn/skip, so it never fails the sheet.
Adds `hibernate` to the checks.doctor probe list so the row is asserted.

Fixes a set -euo pipefail hazard the first VM run caught (exit 1, no
verdict): a no-match grep inside $(...) and a `cond && action` both abort
under set -e — now guarded with || true / || echo 0 / if. Recorded in
MEMORY as a reusable gotcha for writeShellScriptBin scripts.

Verification: V2 PASS — checks.doctor VM test green (fresh build, exit 0;
asserts the hibernate row renders, healthy run stays 0). V1 — ran on real
LUKS+@swap hardware: all three ok rows render (resume set, swap 34G >= RAM,
zram 16G) and the sheet reaches its verdict. V0 bash -n + flake check.

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

agent/BACKLOG.md

@@ -99,16 +99,7 @@ high-ROI, etc.) live in the journal + ROADMAP — not here.*
 
 ### Product / day-2
 
-- **Doctor: hibernate/sleep section** (`VISION § C`) — the doctor covers
-  units/disk/flake/network/audio/GPU/fingerprint/fwupd/charge but has **no**
-  hibernate check, even though #76 just made hibernation a default. Add a
-  read-only section: `resume=`+`resume_offset` present on `/proc/cmdline`
-  (or acknowledge the `swap=0` opt-out), a disk swap ≥ RAM present, zram
-  active at its priority, and no failed suspend/resume in the recent journal.
-  Self-gating (skip when swap=0). Why: "trust > new power UI." Cost: ~1
-  iteration, V2-guardable — the highest-ROI Day-2 gap found + a natural #76
-  follow-on. (Verified 2026-07-10: no resume/swap/hibernate lines in
-  `nomarchy-doctor.sh`.)
+_(Doctor hibernate/sleep section → promoted to **NEXT #77** 2026-07-10.)_
 
 _(Battery charge-limit instant → shipped 2026-07-10; V3 PASS Latitude
   5310: Custom charge type + live menu + unplug re-apply.)_
@@ -169,10 +160,10 @@ _(Identity taste retunes + hand `btop.theme` for white/vantablack/lumon/
 
 ### v1.0 pointer
 
-See **VISION**. Open PROPOSED: doctor hibernate section (`§C`, top Day-2
-pick); Omarchy migrant doc (`§F`); auto time-of-day theme pair (`§D`, big);
-NVIDIA wrappers deferred past v1; IR portal (b)/(c) hardware. Browser
-default = Chromium; power = PPD.
+See **VISION**. Doctor hibernate section promoted → NEXT #77. Open
+PROPOSED: Omarchy migrant doc (`§F`); auto time-of-day theme pair (`§D`,
+big); NVIDIA wrappers deferred past v1; IR portal (b)/(c) hardware.
+Browser default = Chromium; power = PPD.
 
 
 ## Decisions `[human]`