feat: add MySqlOperationService for archive extraction, query execution, and database management

src/main/services/MySqlOperationService.ts

@@ -2,6 +2,7 @@ import fs from 'fs'
 import path from 'path'
 import { spawn } from 'child_process'
 import decompress from 'decompress'
+import zlib from 'zlib'
 
 export interface MySqlConfig {
     binPath: string
@@ -17,6 +18,26 @@ export class MySqlOperationService {
             fs.mkdirSync(targetDir, { recursive: true })
         }
 
+        const lowerPath = archivePath.toLowerCase()
+        if (lowerPath.endsWith('.gz') && !lowerPath.endsWith('.tar.gz')) {
+            // Handle single-file gzip compression like .sql.gz
+            const baseName = path.basename(archivePath, '.gz')
+            const outPath = path.join(targetDir, baseName.endsWith('.sql') ? baseName : `${baseName}.sql`)
+
+            const source = fs.createReadStream(archivePath)
+            const destination = fs.createWriteStream(outPath)
+            const unzip = zlib.createUnzip()
+
+            await new Promise((resolve, reject) => {
+                source.pipe(unzip).pipe(destination)
+                    .on('finish', () => resolve(true))
+                    .on('error', reject)
+            })
+
+            return [outPath]
+        }
+
+        // Process standard archives (tar, zip, tar.gz)
         await decompress(archivePath, targetDir)
 
         // Find all .sql files in the extracted directory