refactor(file-browser): consolidate rename logic and prevent empty file names

[AuDevTist1C]

This PR refactors the file/folder rename control flow in fileBrowser.js to reduce code duplication and adds explicit non-empty input enforcement to the rename prompt.

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Changes

1. Enforce Non-Empty Rename Input

• Added required: true to the rename prompt options.
• While regex pattern matching was already handled via match: config.FILE_NAME_REGEX, adding required: true prevents submitting empty string values ("").

2. Refactor and Deduplicate renameFile Flow

• Consolidated the logic in renameFile(newname) to follow the DRY (Don't Repeat Yourself) principle.
• Before: The Termux branch (isTermuxUrl(url)) contained duplicate state updates (recents.removeFile, recents.addFile, editorManager.getFile, openFolder.renameItem, toast, and reload()) and exited early.
• After: Both Termux and standard filesystem paths resolve newUrl within an if / else block. Successful executions fall through to a single set of state updates and UI refreshes.

3. Unified Error Handling

• Wrapped standard filesystem operations (fs.renameTo(newname)) inside the master try...catch block to handle errors consistently alongside the Termux branch.

_{(PR name and description are AI generated (Gemini 3.6 Flash))}

[greptile-apps]

Greptile Summary

This PR consolidates the local and Termux rename flows while adding required-field validation to the rename prompt.

• Shares post-rename updates and error handling across filesystem paths.
• Constructs the Termux destination URL once before copying and deleting the original file.
• Adds required: true to the file-browser rename prompt.

Confidence Score: 4/5

The PR appears safe to merge, although Enter-key submission still bypasses the intended required-field feedback.

The filesystem rename refactor preserves the existing state-update paths, while the only accepted concern is a non-blocking prompt inconsistency that silently cancels an empty Enter-key submission.

Files Needing Attention: src/pages/fileBrowser/fileBrowser.js

Important Files Changed

Filename	Overview
src/pages/fileBrowser/fileBrowser.js	The rename-flow consolidation preserves existing backend behavior, but the added required validation is bypassed when the prompt is submitted with Enter.

_{Reviews (1): Last reviewed commit: "refactor(file-browser): deduplicate rena..." | Re-trigger Greptile}

[bajrangCoder]

Enter bypasses the new required validation.
FILE_NAME_REGEX accepts an empty string, so clearing the field enables submission. Pressing Enter runs prompt onsubmit, which resolves "" without checking options.required or hiding the prompt. The rename is cancelled by the caller, but the dialog remains in a resolved, non-functional state.