spark: add Hermes environment validation script and report

wizard-work/spark/VALIDATION_REPORT.md

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+# Hermes Spark Validation Report
+Date: 2026-10-23
+Lane: Snippet — quick code and micro-tasks
+
+## Status: VALIDATED
+
+All Hermes environment checks passed:
+
+| Check | Status |
+|-------|--------|
+| Scratch directory exists | PASS |
+| Scratch directory writable | PASS |
+| Python available | PASS |
+| Spark profile exists | PASS |
+
+## Artifact
+- Script: `/root/.hermes/profiles/spark/cache/scratch/validation_script.sh`
+- Verified: 2026-10-23T15:11:00Z
+
+## Environment
+- Host: Linux (6.8.0-71-generic)
+- User: root
+- Profile: spark
+- Scratch: /root/.hermes/profiles/spark/cache/scratch

wizard-work/spark/validation_script.sh

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+#!/bin/bash
+# Hermes Environment Validation Script
+# Test 1: Scratch directory writable
+SCRATCH_DIR="/root/.hermes/profiles/spark/cache/scratch"
+TEST_FILE="$SCRATCH_DIR/validate.txt"
+
+if [ -d "$SCRATCH_DIR" ]; then
+    echo "SCRATCH_EXISTS=true"
+else
+    echo "SCRATCH_EXISTS=false"
+    exit 1
+fi
+
+echo "test content" > "$TEST_FILE"
+if [ -f "$TEST_FILE" ]; then
+    echo "SCRATCH_WRITABLE=true"
+    rm -f "$TEST_FILE"
+else
+    echo "SCRATCH_WRITABLE=false"
+fi
+
+# Test 2: Check hermes-tools availability
+if command -v python3 &> /dev/null; then
+    echo "PYTHON_AVAILABLE=true"
+else
+    echo "PYTHON_AVAILABLE=false"
+fi
+
+# Test 3: Check common Hermes paths
+if [ -d "/root/.hermes/profiles/spark" ]; then
+    echo "SPARK_PROFILE_EXISTS=true"
+else
+    echo "SPARK_PROFILE_EXISTS=false"
+fi
+
+echo "VALIDATION_COMPLETE=true"