Nr/fix/newtab

[NamanRai64]

What does this PR do?

Related issue

Fixes #

Checklist

• I tested my changes
• I didn’t break existing functionality
• I followed repo style

[7sg56]

What changes are done brief them

[NamanRai64]

Store Logic (
src/store/useAppStore.ts
)

Real Files: Updated
createNewTab
to create an actual file node (e.g., untitled.md) in the mock file system instead of a temporary "blank" tab.
Unique Naming: Added logic to automatically append numbers (e.g., untitled-1.md) if a file with that name already exists.
Renaming State: Introduced renamingFileId and
setRenamingFileId
to track which file is currently being edited.
Rename Action: Added
renameFile
to commit name changes to the file system.
Workflow: Triggering "New Tab" now creates the file, opens it, and immediately sets it to rename mode.
2. Explorer UI (
src/components/layout/explorer/FileTreeItem.tsx
)
Double-Click: Added an onDoubleClick handler to start renaming any file.
Input Field: Conditionally renders an field instead of the file name when in rename mode.
Controls:
Enter: Saves the new name.
Escape: Cancels the rename.
Blur: Auto-saves on click away.