Add Kiro steering files, hooks, and scripts (#812)

Co-authored-by: Sungmin Hong <hsungmin@amazon.com>

.kiro/scripts/quality-gate.sh

@@ -0,0 +1,120 @@
+#!/bin/bash
+# ─────────────────────────────────────────────────────────────
+# Quality Gate — full project quality check
+# Runs: build, type check, lint, tests
+# Used by: .kiro/hooks/quality-gate.json (userTriggered)
+# ─────────────────────────────────────────────────────────────
+
+set -o pipefail
+
+PASS="✓"
+FAIL="✗"
+SKIP="○"
+PASSED=0
+FAILED=0
+SKIPPED=0
+
+# ── Package manager detection ────────────────────────────────
+detect_pm() {
+  if [ -f "pnpm-lock.yaml" ]; then
+    echo "pnpm"
+  elif [ -f "yarn.lock" ]; then
+    echo "yarn"
+  elif [ -f "bun.lockb" ] || [ -f "bun.lock" ]; then
+    echo "bun"
+  elif [ -f "package-lock.json" ]; then
+    echo "npm"
+  elif command -v pnpm &>/dev/null; then
+    echo "pnpm"
+  elif command -v yarn &>/dev/null; then
+    echo "yarn"
+  elif command -v bun &>/dev/null; then
+    echo "bun"
+  else
+    echo "npm"
+  fi
+}
+
+PM=$(detect_pm)
+echo "📦 Package manager: $PM"
+echo ""
+
+# ── Helper: run a check ─────────────────────────────────────
+run_check() {
+  local label="$1"
+  shift
+
+  if output=$("$@" 2>&1); then
+    echo "$PASS $label"
+    PASSED=$((PASSED + 1))
+  else
+    echo "$FAIL $label"
+    echo "$output" | head -20
+    FAILED=$((FAILED + 1))
+  fi
+}
+
+# ── 1. Build ─────────────────────────────────────────────────
+if [ -f "package.json" ] && grep -q '"build"' package.json 2>/dev/null; then
+  run_check "Build" $PM run build
+else
+  echo "$SKIP Build (no build script found)"
+  SKIPPED=$((SKIPPED + 1))
+fi
+
+# ── 2. Type check ───────────────────────────────────────────
+if command -v npx &>/dev/null && [ -f "tsconfig.json" ]; then
+  run_check "Type check" npx tsc --noEmit
+elif [ -f "pyrightconfig.json" ] || [ -f "mypy.ini" ]; then
+  if command -v pyright &>/dev/null; then
+    run_check "Type check" pyright
+  elif command -v mypy &>/dev/null; then
+    run_check "Type check" mypy .
+  else
+    echo "$SKIP Type check (pyright/mypy not installed)"
+    SKIPPED=$((SKIPPED + 1))
+  fi
+else
+  echo "$SKIP Type check (no TypeScript or Python type config found)"
+  SKIPPED=$((SKIPPED + 1))
+fi
+
+# ── 3. Lint ──────────────────────────────────────────────────
+if [ -f "biome.json" ] || [ -f "biome.jsonc" ]; then
+  run_check "Lint (Biome)" npx biome check .
+elif [ -f ".eslintrc" ] || [ -f ".eslintrc.js" ] || [ -f ".eslintrc.json" ] || [ -f ".eslintrc.yml" ] || [ -f "eslint.config.js" ] || [ -f "eslint.config.mjs" ]; then
+  run_check "Lint (ESLint)" npx eslint .
+elif command -v ruff &>/dev/null && [ -f "pyproject.toml" ]; then
+  run_check "Lint (Ruff)" ruff check .
+elif command -v golangci-lint &>/dev/null && [ -f "go.mod" ]; then
+  run_check "Lint (golangci-lint)" golangci-lint run
+else
+  echo "$SKIP Lint (no linter config found)"
+  SKIPPED=$((SKIPPED + 1))
+fi
+
+# ── 4. Tests ─────────────────────────────────────────────────
+if [ -f "package.json" ] && grep -q '"test"' package.json 2>/dev/null; then
+  run_check "Tests" $PM run test
+elif [ -f "pyproject.toml" ] && command -v pytest &>/dev/null; then
+  run_check "Tests" pytest
+elif [ -f "go.mod" ] && command -v go &>/dev/null; then
+  run_check "Tests" go test ./...
+else
+  echo "$SKIP Tests (no test runner found)"
+  SKIPPED=$((SKIPPED + 1))
+fi
+
+# ── Summary ──────────────────────────────────────────────────
+echo ""
+echo "─────────────────────────────────────"
+TOTAL=$((PASSED + FAILED + SKIPPED))
+echo "Results: $PASSED passed, $FAILED failed, $SKIPPED skipped ($TOTAL total)"
+
+if [ "$FAILED" -gt 0 ]; then
+  echo "Quality gate: FAILED"
+  exit 1
+else
+  echo "Quality gate: PASSED"
+  exit 0
+fi