Make save magic command save to main.py instead of boot.py so it doesn't soft brick system

Author: malcolm-sparkfun

kernel/src/kernel.ts

@@ -4,7 +4,7 @@ import { ServiceContainer } from './services/ServiceContainer';
 
 const reconnectString: string = "%connect%"
 const saveString: string = "%save%";
-const bootFileName: string = "boot.py";
+const bootFileName: string = "/main.py";
 const bootSavePrefix: string = `with open('${bootFileName}', 'w') as f:\n    f.write('''\n`;
 const bootSaveSuffix: string = "\n''')\n";
 
@@ -81,8 +81,8 @@ export class EmbeddedKernel extends BaseKernel {
       await this.serviceContainer.deviceService.connect(this.outputResponse.bind(this));
     }
     if (code.includes(saveString)) {
-      // Burn the code after the save string into the boot.py file
-      this.outputResponse("Save command detected, saving code to boot.py...");
+      // Burn the code after the save string into the main.py file
+      this.outputResponse(`Save command detected, saving code to ${bootFileName}...`);
       const codeToSave = code.split(saveString)[1].trim();
       if (!codeToSave) {
         return {
@@ -93,19 +93,19 @@ export class EmbeddedKernel extends BaseKernel {
           traceback: ['Please provide code to save after the %save% command']
         };
       }
-      // Burn the code by adding it to the boot.py file. Can call executeRequest with the code to save 
-      // but append the code to write it to the boot.py file at the start of the code.
+      // Burn the code by adding it to the main.py file. Can call executeRequest with the code to save 
+      // but append the code to write it to the main.py file at the start of the code.
       const bootCode = `# This code is automatically generated by the Embedded Kernel\n${codeToSave}`;
       const bootCodeWithSave = `${bootSavePrefix}${bootCode}${bootSaveSuffix}`;
 
-      // Execute the command to save the boot.py file
+      // Execute the command to save the main.py file
       if (!this.serviceContainer.deviceService.getTransport()) {
-        console.log("[Kernel] executeRequest - No transport available for saving boot.py");
+        console.log(`[Kernel] executeRequest - No transport available for saving ${bootFileName}`);
         return {
           status: 'error',
           execution_count: this.executionCount,
           ename: 'TransportError',
-          evalue: 'No transport available to save boot.py',
+          evalue: `No transport available to save ${bootFileName}`,
           traceback: ['Please connect a device first']
         };
       }
@@ -123,7 +123,7 @@ export class EmbeddedKernel extends BaseKernel {
           traceback: [result.error || 'Unknown error']
         };
       }
-      console.log("[Kernel] executeRequest - Code saved to boot.py successfully");
+      console.log(`[Kernel] executeRequest - Code saved to ${bootFileName} successfully`);
       return {
         status: 'ok',
         execution_count: this.executionCount,