fix(startup): add /Users/mana mount to colima start (root cause fix)

The startup script runs `colima delete` on hard shutdown recovery,
wiping the colima.yaml mount config. Then `colima start` only added
/Volumes/ManaData but forgot /Users/mana — causing all file bind-mounts
to appear as empty directories (VirtioFS can't see host files).

This was the root cause of Synapse/SearXNG/Alertmanager/Loki crashing
after the power outage. Now both mounts are always passed explicitly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/mac-mini/startup.sh

@@ -49,6 +49,7 @@ else
         --vm-type vz \
         --vz-rosetta \
         --mount-type virtiofs \
+        --mount /Users/mana:w \
         --mount /Volumes/ManaData:w \
         2>&1 | tee -a "$LOG_FILE"