feat: add runner conversion scripts and strengthen cutover automation

runners-conversion/augur/check-coverage-thresholds.sh

@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+# check-coverage-thresholds.sh — Enforce minimum test coverage for critical packages.
+#
+# Runs `go test -cover` on specified packages and fails if any package
+# drops below its defined minimum coverage threshold.
+#
+# Usage: scripts/check-coverage-thresholds.sh
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$REPO_ROOT"
+
+log() {
+  printf '[coverage] %s\n' "$*"
+}
+
+err() {
+  printf '[coverage] FAIL: %s\n' "$*" >&2
+}
+
+# Package thresholds: "package_path:minimum_percent"
+# Set ~2% below current values to catch regressions without blocking on noise.
+THRESHOLDS=(
+  "internal/sync:70"
+  "internal/storage:60"
+  "internal/service:50"
+  "internal/service/conversion:80"
+  "internal/cli:30"
+  "internal/model:40"
+)
+
+failures=0
+passes=0
+
+for entry in "${THRESHOLDS[@]}"; do
+  pkg="${entry%%:*}"
+  threshold="${entry##*:}"
+
+  # Run go test with coverage and extract percentage
+  output=$(go test -cover "./$pkg" 2>&1) || {
+    err "$pkg — tests failed"
+    failures=$((failures + 1))
+    continue
+  }
+
+  # Extract coverage percentage (e.g., "coverage: 72.1% of statements")
+  coverage=$(echo "$output" | grep -oE 'coverage: [0-9]+\.[0-9]+%' | grep -oE '[0-9]+\.[0-9]+' || echo "0.0")
+
+  if [[ -z "$coverage" || "$coverage" == "0.0" ]]; then
+    # Package might have no test files or no statements
+    if echo "$output" | grep -q '\[no test files\]'; then
+      err "$pkg — no test files (threshold: ${threshold}%)"
+      failures=$((failures + 1))
+    else
+      err "$pkg — could not determine coverage (threshold: ${threshold}%)"
+      failures=$((failures + 1))
+    fi
+    continue
+  fi
+
+  # Compare using awk for floating-point comparison
+  passed=$(awk "BEGIN { print ($coverage >= $threshold) ? 1 : 0 }")
+
+  if [[ "$passed" -eq 1 ]]; then
+    log "$pkg: ${coverage}% >= ${threshold}% threshold"
+    passes=$((passes + 1))
+  else
+    err "$pkg: ${coverage}% < ${threshold}% threshold"
+    failures=$((failures + 1))
+  fi
+done
+
+echo ""
+log "Results: ${passes} passed, ${failures} failed (${#THRESHOLDS[@]} packages checked)"
+
+if [[ "$failures" -gt 0 ]]; then
+  err "Coverage threshold check failed."
+  exit 1
+fi
+
+log "All coverage thresholds met."
+exit 0