src/parallel/worktree-manager.ts (1)

383-446: ⚠️ Potential issue | 🟠 Major

Disk‑space check should target the worktree volume, not cwd.
When worktreeDir sits on another filesystem, checking cwd can misreport free space and either block valid runs or allow failures. Consider checking the worktree path (or its parent if the directory does not exist yet).

🛠️ Suggested fix

-      let available = await this.getAvailableDiskSpaceFromStatFs();
+      const diskCheckPath = fs.existsSync(this.config.worktreeDir)
+        ? this.config.worktreeDir
+        : path.dirname(this.config.worktreeDir);
+      let available = await this.getAvailableDiskSpaceFromStatFs(diskCheckPath);
       if (available === null || available <= 0) {
-        available = await this.getAvailableDiskSpaceFromDf();
+        available = await this.getAvailableDiskSpaceFromDf(diskCheckPath);
       }

-  private async getAvailableDiskSpaceFromStatFs(): Promise<number | null> {
+  private async getAvailableDiskSpaceFromStatFs(targetPath: string): Promise<number | null> {
     try {
-      const stats = await fs.promises.statfs(this.config.cwd);
+      const stats = await fs.promises.statfs(targetPath);
       const available = Number(stats.bavail) * Number(stats.bsize);

-  private getAvailableDiskSpaceFromDf(): number | null {
+  private getAvailableDiskSpaceFromDf(targetPath: string): number | null {
     try {
-      const output = execFileSync('df', ['-k', this.config.cwd], {
+      const output = execFileSync('df', ['-k', targetPath], {
         encoding: 'utf-8',
       });