feat: add runner conversion scripts and strengthen cutover automation

runners-conversion/augur/check-browser-parity.sh

@@ -0,0 +1,111 @@
+#!/usr/bin/env bash
+# check-browser-parity.sh — Verify Chrome/Firefox extension parity for all providers.
+#
+# Compares all source files between Firefox (-exporter-extension) and Chrome
+# (-exporter-chrome) variants. The only allowed difference is the
+# browser_specific_settings.gecko block in manifest.json.
+#
+# Usage: scripts/check-browser-parity.sh
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+EXT_ROOT="$REPO_ROOT/browser-extensions/history-extensions"
+
+PROVIDERS=(gemini copilot deepseek grok perplexity poe)
+
+# Files that must be byte-identical between variants.
+PARITY_FILES=(
+  src/content/content.js
+  src/lib/export.js
+  src/lib/popup-core.js
+  src/lib/popup-utils.js
+  src/popup/popup.js
+  src/popup/popup.html
+  src/popup/popup.css
+  src/popup/permissions.html
+)
+
+log() {
+  printf '[parity] %s\n' "$*"
+}
+
+err() {
+  printf '[parity] FAIL: %s\n' "$*" >&2
+}
+
+failures=0
+checks=0
+
+for provider in "${PROVIDERS[@]}"; do
+  firefox_dir="$EXT_ROOT/${provider}-exporter-extension"
+  chrome_dir="$EXT_ROOT/${provider}-exporter-chrome"
+
+  if [[ ! -d "$firefox_dir" ]]; then
+    err "$provider — Firefox directory missing: $firefox_dir"
+    failures=$((failures + 1))
+    continue
+  fi
+
+  if [[ ! -d "$chrome_dir" ]]; then
+    err "$provider — Chrome directory missing: $chrome_dir"
+    failures=$((failures + 1))
+    continue
+  fi
+
+  for file in "${PARITY_FILES[@]}"; do
+    checks=$((checks + 1))
+    ff_path="$firefox_dir/$file"
+    cr_path="$chrome_dir/$file"
+
+    if [[ ! -f "$ff_path" ]]; then
+      err "$provider — Firefox missing: $file"
+      failures=$((failures + 1))
+      continue
+    fi
+
+    if [[ ! -f "$cr_path" ]]; then
+      err "$provider — Chrome missing: $file"
+      failures=$((failures + 1))
+      continue
+    fi
+
+    if ! diff -q "$ff_path" "$cr_path" >/dev/null 2>&1; then
+      err "$provider — $file differs between Firefox and Chrome"
+      failures=$((failures + 1))
+    fi
+  done
+
+  # Validate manifest.json: only browser_specific_settings.gecko should differ.
+  checks=$((checks + 1))
+  ff_manifest="$firefox_dir/manifest.json"
+  cr_manifest="$chrome_dir/manifest.json"
+
+  if [[ ! -f "$ff_manifest" || ! -f "$cr_manifest" ]]; then
+    err "$provider — manifest.json missing from one or both variants"
+    failures=$((failures + 1))
+    continue
+  fi
+
+  # Strip browser_specific_settings block from Firefox manifest and normalize
+  # trailing commas so the remaining JSON structure matches Chrome.
+  ff_stripped=$(sed '/"browser_specific_settings"/,/^  }/d' "$ff_manifest" | sed '/^$/d' | sed 's/,$//')
+  cr_stripped=$(sed '/^$/d' "$cr_manifest" | sed 's/,$//')
+
+  if ! diff -q <(echo "$ff_stripped") <(echo "$cr_stripped") >/dev/null 2>&1; then
+    err "$provider — manifest.json has unexpected differences beyond browser_specific_settings"
+    failures=$((failures + 1))
+  fi
+done
+
+echo ""
+passed=$((checks - failures))
+log "Results: ${passed} passed, ${failures} failed (${checks} checks across ${#PROVIDERS[@]} providers)"
+
+if [[ "$failures" -gt 0 ]]; then
+  err "Browser parity check failed."
+  exit 1
+fi
+
+log "All browser parity checks passed."
+exit 0