feat: CI verification pipeline and structural conformance gates

- Add scripts/check-structural.js: counts production as any, empty catch,
  and ?? 0 patterns; fails CI if counts exceed committed baseline
- Add scripts/.structural-baseline.json: committed baseline (101 as any,
  17 empty catch, 62 ?? 0); use --fix-baseline to ratchet down
- Add scripts/ci-verify.sh: ordered pipeline (build → typecheck → lint →
  structural → unit tests → E2E) with pass/fail summary
- Add npm scripts: test:structural, test:structural:fix, ci:verify
- Add cache-staleness conformance test: verifies WORLD_CACHE_SCHEMA_VERSION
  is prefixed to all cache keys for auto-invalidation on schema changes
- Cache test suite grows from 141 → 142 passes

scripts/ci-verify.sh

@@ -0,0 +1,84 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$ROOT"
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+pass_count=0
+fail_count=0
+start_time=$(date +%s)
+
+step() {
+  local label="$1"
+  shift
+  echo -e "${YELLOW}[CI]${NC} ${label}..."
+  if "$@" > /tmp/ci-output-$$.log 2>&1; then
+    echo -e "  ${GREEN}PASS${NC}"
+    pass_count=$((pass_count + 1))
+  else
+    echo -e "  ${RED}FAIL${NC}"
+    tail -30 /tmp/ci-output-$$.log
+    fail_count=$((fail_count + 1))
+  fi
+}
+
+echo "============================================================"
+echo " Imhotep CI Verification"
+echo "============================================================"
+echo ""
+
+# 1. Build all packages
+step "Build" npm run build
+
+# 2. Typecheck
+step "Typecheck" npm run typecheck
+
+# 3. Lint
+step "Lint" npm run lint
+
+# 4. Structural conformance (as any, empty catch, ?? 0 baselines)
+step "Structural conformance" node scripts/check-structural.js
+
+# 5. Unit tests (DSL, core, solver, playwright)
+step "Core tests (DSL)" npm test --workspace=imhotep-dsl --if-present
+step "Core tests (core)" npm test --workspace=imhotep-core --if-present
+step "Core tests (solver)" npm test --workspace=imhotep-solver --if-present
+step "Core tests (extractor)" npm test --workspace=imhotep-extractor --if-present
+step "Core tests (geometry)" npm test --workspace=imhotep-geometry --if-present
+
+# 6. E2E tests (requires browser)
+echo -e "${YELLOW}[CI]${NC} E2E hard tests..."
+if npx playwright test --config packages/imhotep-fixtures/playwright.config.ts --grep="hard test" --workers=1 > /tmp/ci-output-$$.log 2>&1; then
+  echo -e "  ${GREEN}PASS${NC}"
+  pass_count=$((pass_count + 1))
+else
+  echo -e "  ${RED}FAIL${NC}"
+  tail -30 /tmp/ci-output-$$.log
+  fail_count=$((fail_count + 1))
+fi
+
+# Summary
+end_time=$(date +%s)
+elapsed=$((end_time - start_time))
+
+echo ""
+echo "============================================================"
+echo " CI Summary"
+echo "============================================================"
+echo "  Passed: ${GREEN}${pass_count}${NC}"
+echo "  Failed: ${RED}${fail_count}${NC}"
+echo "  Elapsed: ${elapsed}s"
+echo ""
+
+if [ "$fail_count" -gt 0 ]; then
+  echo -e "${RED}CI verification FAILED${NC}"
+  exit 1
+else
+  echo -e "${GREEN}CI verification PASSED${NC}"
+  exit 0
+fi