fix: clean up church-matcher types and add HK OSM bounding box

- Remove discovermassId/buscarmisasNetworkId from findDuplicateChurch match
  passes (importers now do their own pre-check dedup); restore as optional
  fields on ExistingChurch to keep type/runtime in sync
- Add HK bounding box to COUNTRY_BOUNDING_BOXES; fix silent 0-result
  fallback when country query returns empty from mirror server
- discovermass importer: add --limit flag and skip-already-imported
  pre-check using importedSlugs set
- Import scripts: remove discovermassId from ExistingChurch select/stubs
  (field not needed in shared matcher context)
- Schema: reorder discovermassId/kerknetId/gottesdienstzeitenId fields

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/import-discovermass.ts

@@ -94,6 +94,7 @@ interface CLIArgs {
   all: boolean;
   dryRun: boolean;
   resumeFrom?: number;
+  limit?: number;
   jobId?: string;
 }
 
@@ -507,6 +508,7 @@ function parseCLIArgs(): CLIArgs {
       case '--all': result.all = true; break;
       case '--dry-run': result.dryRun = true; break;
       case '--resume-from': result.resumeFrom = parseInt(args[++i], 10); break;
+      case '--limit': result.limit = parseInt(args[++i], 10); break;
       case '--job-id': result.jobId = args[++i]; break;
     }
   }
@@ -540,14 +542,25 @@ async function main() {
   try {
     const urls = await getAllChurchUrls();
     const existingChurches = await loadExistingChurches();
+
+    // Skip already-imported churches — check discovermassId set in DB
+    const importedSlugs = new Set(
+      existingChurches.filter(c => c.discovermassId).map(c => c.discovermassId!)
+    );
+
+    // Apply --resume-from first, then filter to unimported, then apply --limit
     const startIdx = args.resumeFrom ?? 0;
-    const churchUrls = urls.slice(startIdx);
-    console.log(`\nProcessing ${churchUrls.length} churches (starting from index ${startIdx})...\n`);
+    const candidateUrls = urls.slice(startIdx).filter(url => {
+      const slug = url.replace('https://discovermass.com/church/', '').replace(/\/$/, '');
+      return !importedSlugs.has(slug);
+    });
+    const churchUrls = args.limit ? candidateUrls.slice(0, args.limit) : candidateUrls;
+
+    console.log(`\nSitemap total: ${urls.length} | Already imported: ${importedSlugs.size} | This run: ${churchUrls.length}${args.limit ? ` (limit ${args.limit})` : ''}\n`);
 
     for (let i = 0; i < churchUrls.length; i++) {
       const url = churchUrls[i];
-      const overallIdx = startIdx + i;
-      console.log(`[${overallIdx + 1}/${urls.length}] ${url}`);
+      console.log(`[${i + 1}/${churchUrls.length}] ${url}`);
       await processChurch(url, existingChurches, args, stats);
       if (i < churchUrls.length - 1) {
         await sleep(REQUEST_DELAY_MS);