x265-only relauncher; STATE: the 16:51 stop was a machine reboot

- run/relaunch_x265.sh: start ONLY the x265 tier. run/relaunch_tiers.sh hardcodes
  `for t in x265 nvenc`, and the nvenc tier must not start while another job owns the
  GPU (the TubeSync 58-file repair batch holds it since 2026-10-09 20:36). x265 is
  pinned to the E-cores, so it shares only the RaiDrive mount -- 2 concurrent share
  jobs is the documented safe limit.
- The launcher redirects its own banners into the log (under -WindowStyle Hidden,
  stdout goes nowhere) and documents the -ArgumentList form: the script path alone.
- STATE.md: LastBootUpTime 2026-10-09 16:51:58 -- both tiers stopped by a REBOOT, not a
  bug (x265 404/589, nvenc 308/589); the stale lock pids need no cleanup because
  transcode.Lock is staleness-aware. Memory after reboot: 13 GB free / 50.3 of 55.9 GB
  committed, but the commit limit fell from 79.6 GB because D: is 92% full.

run/relaunch_x265.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+# Start ONLY the x265 tier of the 樊登读书会 conversion, DETACHED from Hermes.
+#
+# Why a separate launcher: run/relaunch_tiers.sh hardcodes `for t in x265 nvenc`, and the nvenc
+# tier must NOT start while another job owns the GPU -- the TubeSync 58-file repair batch has held
+# the GPU encoder since 2026-10-09 20:36. x265 is pure CPU pinned to the E-cores (0x3FF0000), so it
+# shares nothing with the GPU job; the only shared resource is the RaiDrive mount, and 2 concurrent
+# share jobs is the documented safe limit (3 produced `[Errno 9] Bad file descriptor`).
+#
+# Detached for the reason recorded in STATE.md: a Hermes-scoped background job is killed when the
+# session ends (measured 2026-10-08 10:37, both tiers killed mid-encode), so the launcher is started
+# by `powershell Start-Process ... -WindowStyle Hidden` and its parent exits immediately. No exit
+# notification -- watch the log; stop by PID only, never by image name.
+#
+# Idempotent: already-converted files are skipped, a failure leaves the live file untouched and the
+# next attempt retries it. Lock: C:\AI\transcode-run\run-x265.lock (stale-aware: age > 300 s AND a
+# dead pid is taken over automatically, so the lock left by the 16:51 reboot needs no cleanup).
+#
+# Started correctly (the argument form matters): the script path goes in -ArgumentList ALONE.
+#   Start-Process -FilePath "C:\Program Files\Git\bin\bash.exe" -ArgumentList "<this script>" -WindowStyle Hidden
+# NOT "-lc","bash <script>" -- that runs an interactive bash instead and starts nothing.
+
+set -u
+TOOLS=/c/Users/hoelee/AppData/Local/hermes/tools
+PY="$(ls -d $TOOLS/python-*/python.exe 2>/dev/null | head -1)"
+LIB='Z:\Class\#snapshot\GMT+08-2026.09.25-09.50.20\樊登读书\樊登读书会（每周更新）'
+LOG=/d/tmp/xcode
+OUT="$LOG/run_x265.log"
+
+# The launcher's own banners go into the log too: under -WindowStyle Hidden stdout goes nowhere,
+# so an unredirected banner leaves no evidence of how a run ended.
+exec >> "$OUT" 2>&1
+cd /d/dev/universal-video-transcode || { echo "FATAL cannot cd to the repo"; exit 1; }
+echo "=== x265-only relauncher start $(date '+%F %T')  py=$PY"
+echo "=== origin root: $LIB"
+if [ ! -x "$PY" ]; then echo "FATAL python not found under $TOOLS"; exit 1; fi
+
+for i in 1 2 3 4 5 6 7 8; do
+  echo "=== relaunch attempt $i $(date '+%F %T')"
+  "$PY" -u scripts/library_run.py --tier x265 --origin-root "$LIB" --reverse
+  rc=$?
+  echo "x265 PASS-DONE rc=$rc attempt=$i $(date '+%F %T')"
+  [ $rc -eq 0 ] && break
+  sleep 60
+done