fix: copy working directory when duplicating task

[jonathanlab]

Summary

• Fixed issue where duplicating a task didn't copy the working directory configuration
• Updated useDuplicateTask hook to copy repoPath from original task to duplicated task

Changes

• Modified src/renderer/hooks/useTasks.ts to add onSuccess callback that copies working directory state
• Applied linter formatting to vite.main.config.mts

Test plan

• Duplicate a task that has a working directory configured
• Verify the duplicated task inherits the working directory
• Run the duplicated task to confirm it uses the correct working directory

🤖 Generated with Claude Code