fix: revert TUNNEL_LOCAL_SSH_PORT to 2223, fix registry, add incident docs

- wizard.sh + connect.conf: TUNNEL_LOCAL_SSH_PORT back to 2223 (Synology SSH port)
- port-registry: renamed x6340 → x4662 (matches QuickConnect ID)
- port-registry: added MR2200ac mesh satellite note for x4662
- deployment checklist: added kit-connect section, post-deployment rules,
  incident log, and complete fleet port registry table
- memory: added fleet-router-inventory.md with full fleet state
- hub README: updated with current status and locations

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

kit-connect/wizard.sh

@@ -44,7 +44,7 @@ ok "Device ID: ${DEVICE_ID}"
 # ── Step 2: Check prerequisites ────────────────────────────────
 step "Checking prerequisites..."
 for cmd in curl ssh ssh-keygen; do
-	command -v "$cmd" >/dev/null 2>&1 || { echo "    ✗ Missing: $cmd"; exit 1; }
+	which "$cmd" >/dev/null 2>&1 || { echo "    ✗ Missing: $cmd"; exit 1; }
 done
 ok "All prerequisites found (curl, ssh)"