stem95su: scheduled Drive->site sync CronJob (every 10m)

CronJob stem95su-gdrive-sync (*/10) mounts the content PVC RW and
rclone-syncs the read-only Drive folder "claude" (stem claude/files) onto
it (rclone/rclone:1.74.3, scope=drive.readonly, empty-source guard +
--max-delete 25). ESO ExternalSecret stem95su-rclone <- Vault
secret/stem95su. Requires the GCP OAuth app published to Production or the
refresh token expires ~weekly.

Lands the gdrive-sync stack on master (it had landed on a feature branch
by accident on the shared devvm checkout).

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

.claude/skills/setup-project/scripts/stability-gate.sh

@@ -1,71 +0,0 @@
-#!/usr/bin/env bash
-# 10-minute deploy stability gate for setup-project skill.
-# Polls pod readiness + HTTP 200 on target URL every 30s for 20 iterations.
-# Requires 18/20 probes to succeed (tolerates 2 blips for restarts/DNS propagation).
-#
-# Usage:
-#   stability-gate.sh <namespace> <app-label> <url>
-#
-# Example:
-#   stability-gate.sh myapp myapp https://myapp.viktorbarzin.me
-#
-# Exit codes:
-#   0  - Stable (>=18/20 probes OK)
-#   1  - Unstable (<18/20 probes OK)
-#   2  - Usage error
-
-set -u
-
-if [ "$#" -ne 3 ]; then
-  echo "Usage: $0 <namespace> <app-label> <url>" >&2
-  exit 2
-fi
-
-NS="$1"
-APP="$2"
-URL="$3"
-
-TOTAL_PROBES=20
-MIN_SUCCESSES=18
-INTERVAL_SECONDS=30
-
-ok_count=0
-fail_count=0
-
-echo "stability-gate: ns=$NS app=$APP url=$URL"
-echo "stability-gate: $TOTAL_PROBES probes x ${INTERVAL_SECONDS}s (need $MIN_SUCCESSES/$TOTAL_PROBES)"
-
-for i in $(seq 1 "$TOTAL_PROBES"); do
-  probe_ok=true
-
-  if ! kubectl wait --for=condition=Ready pod -l "app=$APP" -n "$NS" --timeout=25s >/dev/null 2>&1; then
-    probe_ok=false
-  fi
-
-  status=$(curl -sS -o /dev/null -w "%{http_code}" --max-time 10 "$URL" || echo "000")
-  if [ "$status" != "200" ]; then
-    probe_ok=false
-  fi
-
-  if [ "$probe_ok" = "true" ]; then
-    ok_count=$((ok_count + 1))
-    printf "  probe %2d/%d: OK (http=%s)\n" "$i" "$TOTAL_PROBES" "$status"
-  else
-    fail_count=$((fail_count + 1))
-    printf "  probe %2d/%d: FAIL (http=%s)\n" "$i" "$TOTAL_PROBES" "$status"
-  fi
-
-  if [ "$i" -lt "$TOTAL_PROBES" ]; then
-    sleep "$INTERVAL_SECONDS"
-  fi
-done
-
-echo "stability-gate: results ok=$ok_count fail=$fail_count"
-
-if [ "$ok_count" -ge "$MIN_SUCCESSES" ]; then
-  echo "stability-gate: PASS"
-  exit 0
-fi
-
-echo "stability-gate: FAIL (need $MIN_SUCCESSES, got $ok_count)" >&2
-exit 1