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

Refactors file and folder renaming to share post-rename state updates.

• Adds required-input configuration to the rename prompt.
• Consolidates Termux and standard filesystem rename handling under one error boundary.
• Reuses the common recent-file, editor, folder-tree, toast, and reload updates.

Confidence Score: 4/5

The PR does not yet appear safe to merge because empty rename submissions still bypass the intended required-field enforcement and silently cancel.

Although greptile replied that the issue was invalid because the regex disabled submission, FILE_NAME_REGEX accepts the empty string, so the enabled form submission resolves an empty value and the rename handler silently exits.

Files Needing Attention: src/pages/fileBrowser/fileBrowser.js; src/dialogs/prompt.js; src/lib/config.js

Important Files Changed

Filename	Overview
src/pages/fileBrowser/fileBrowser.js	Consolidates rename execution and subsequent UI/state synchronization while adding required-input configuration.

_{Reviews (2): 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.