Added new saving setting feature: "Omit single root folder", "Save in single folder". Added Korean language.

[alemem64]

Omit single root folder:
When there is only single root folder, it does not make root folder.

Save in single folder:
If it is turned on, it makes a single .tpsheet and single .sprites/ folder.

These new feature will make compatible with original texture packer.

I also added Korean language.

[Copilot]

Pull request overview

This PR adds two new settings for texture packing and introduces Korean language localization. The "Omit single root folder" feature removes a common root folder from sprite names when all sprites share one, and "Save in single folder" allows exporting multiple texture sheets into a single atlas file (currently only for GodotAtlas format). Korean translations have been added for all UI strings.

Changes:

• Added "Omit single root folder" and "Save in single folder" checkbox options to the pack properties UI
• Implemented logic to detect and strip common root folders from sprite names during export
• Extended GodotAtlas template to support multiple textures in a single output file
• Added complete Korean language localization with 144 translated strings

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/client/ui/PackProperties.jsx	Adds UI checkboxes and data binding for the two new settings
src/client/exporters/index.js	Implements root folder detection/omission logic and exports prepareData function
src/client/APP.js	Adds logic to aggregate multiple textures into single file for GodotAtlas format
src/client/resources/static/exporters/GodotAtlas.mst	Updated template to conditionally render single or multiple textures
src/client/resources/static/localization/*.csv	Added translations for new feature strings across all languages
src/client/resources/static/localization/ko.csv	New Korean localization file with complete translations
src/client/resources/static/localization/languages.json	Registered Korean language option
electron/main.js	Changed tinify and autoUpdater to lazy-load for development mode compatibility

Comments suppressed due to low confidence (2)

src/client/resources/static/exporters/GodotAtlas.mst:63

• Trailing comma in JSON object will cause JSON parse errors. The comma after the 'format' field on line 63 should be removed as it's the last property in the 'meta' object.

		"format": "{{config.format}}",

src/client/resources/static/localization/ko.csv:145

• CSV file has an extra blank line at the end (line 145). While not breaking, CSV files should typically not have trailing blank lines. The English localization file ends at line 144 without a trailing blank line, so this should match that pattern for consistency.

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[Copilot]

This logic duplicates the first/last assignment pattern from lines 156-160 in prepareData(). The first/last flags are being set twice: once per texture in prepareData (lines 156-160 in exporters/index.js), and then again here for the textures array. The second assignment appears redundant since each texture object already has these flags set correctly from prepareData.

Suggested change

	if (textures.length) {
	textures[0].first = true;
	textures[textures.length - 1].last = true;
	}

[Copilot]

The prepareData function returns an object with {rects, config} structure, but here it's being pushed directly into the textures array. This should have a comment explaining that each element is the full result object containing both rects and config, not just the texture data.

Suggested change

	if (saveSingleFolder) {
	if (saveSingleFolder) {
	// Note: prepareData returns an object { rects, config }, so each element in `textures`
	// is the full result object (metadata + rects), not just raw texture image data.