Zip: remove invalid .catch on archiver.finalize; copy shared.js.map in dev

- archiver.finalize() is not a promise; attach error via 'error' event and wrap in try/catch
- Include shared.js.map in dev copies to keep DevTools source maps complete

Author: PeterDaveHello

build.mjs

@@ -423,7 +423,11 @@ async function zipFolder(dir) {
     output.on('close', resolve)
     archive.pipe(output)
     archive.directory(dir, false)
-    archive.finalize().catch(onError)
+    try {
+      archive.finalize()
+    } catch (err) {
+      onError(err)
+    }
   })
 }
 
@@ -474,6 +478,7 @@ async function finishOutput(outputDirSuffix, sourceBuildDir = outdir) {
     ...(isProduction
       ? []
       : [
+          { src: `${sourceBuildDir}/shared.js.map`, dst: 'shared.js.map' },
           { src: `${sourceBuildDir}/content-script.js.map`, dst: 'content-script.js.map' },
           { src: `${sourceBuildDir}/background.js.map`, dst: 'background.js.map' },
           { src: `${sourceBuildDir}/popup.js.map`, dst: 'popup.js.map' },