Adding Project Files

preload.js

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+const { contextBridge, ipcRenderer } = require("electron");
+
+contextBridge.exposeInMainWorld("api", {
+    saveTags: (tags) => ipcRenderer.send("save-tags", tags),
+    loadTags: () => ipcRenderer.invoke("load-tags"),
+    listSerialPorts: () => ipcRenderer.invoke("list-serial-ports"),
+
+    // connect/disconnect + subscription API
+    connectCom: (port, baudRate) => ipcRenderer.invoke("connect-com", { port, baudRate }),
+    disconnectCom: () => ipcRenderer.invoke("disconnect-com"),
+    onSerialUpdate: (cb) => {
+        const listener = (event, data) => { cb(data); };
+        ipcRenderer.on("serial-update", listener);
+        // return unregister function
+        return () => ipcRenderer.removeListener("serial-update", listener);
+    },
+    onSerialRaw: (cb) => {
+        const listener = (event, data) => { cb(data); };
+        ipcRenderer.on("serial-raw", listener);
+        return () => ipcRenderer.removeListener("serial-raw", listener);
+    },
+    onVolumeLog: (cb) => {
+        const listener = (event, data) => { cb(data); };
+        ipcRenderer.on("volume-log", listener);
+        return () => ipcRenderer.removeListener("volume-log", listener);
+    }
+});