feat: better UX on file export

[JonnyPower]

• same directory as input
• same filename with results suffix

[cursor]

Bug: Filename Collision Resolution Fails

The resolveFileNameCollision method incorrectly determines the filename and extension for collision resolution. It uses originalFile.getAbsolutePath() to find the last dot, instead of originalFile.getName(). This causes incorrect parsing when directory names contain dots (e.g., /home/user.name/file.txt, /tmp/version1.2/myfile.txt) or when dealing with hidden files (e.g., /path/to/.bashrc). As a result, collision-resolved filenames are malformed (e.g., /home/user (1).name/file, /path/to/ (1).bashrc).

src/main/java/com/tractionrec/recrec/ui/RecRecResultsPreview.java#L669-L697

recrec/src/main/java/com/tractionrec/recrec/ui/RecRecResultsPreview.java

Lines 669 to 697 in 0bac776

	*/
	private File resolveFileNameCollision(File originalFile) {
	if (!originalFile.exists()) {
	return originalFile;
	}
	String originalPath = originalFile.getAbsolutePath();
	String nameWithoutExt;
	String extension;
	int dotIndex = originalPath.lastIndexOf('.');
	if (dotIndex > 0) {
	nameWithoutExt = originalPath.substring(0, dotIndex);
	extension = originalPath.substring(dotIndex);
	} else {
	nameWithoutExt = originalPath;
	extension = "";
	}
	int counter = 1;
	File candidateFile;
	do {
	String newPath = nameWithoutExt + " (" + counter + ")" + extension;
	candidateFile = new File(newPath);
	counter++;
	} while (candidateFile.exists());
	return candidateFile;
	}

Fix in Cursor

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Bug: Export Filename Extension Handling Flaw

The getDefaultExportFileName() method incorrectly derives default export filenames from input files. It preserves the original file's extension (e.g., data.txt), leading to confusing double extensions like data - results.txt.csv after the export logic appends .csv. Additionally, the logic for identifying extensions (if (dotIndex > 0)) is flawed, causing unusual filenames for files ending with a dot (e.g., file. becomes file - results.), as it treats the trailing dot as an extension.

src/main/java/com/tractionrec/recrec/ui/RecRecResultsPreview.java#L606-L617

recrec/src/main/java/com/tractionrec/recrec/ui/RecRecResultsPreview.java

Lines 606 to 617 in 0bac776

	// For CSV-based queries, use original filename + " - results"
	if (state.inputFile != null) {
	String originalName = state.inputFile.getName();
	int dotIndex = originalName.lastIndexOf('.');
	if (dotIndex > 0) {
	String nameWithoutExt = originalName.substring(0, dotIndex);
	String extension = originalName.substring(dotIndex);
	return nameWithoutExt + " - results" + extension;
	} else {
	return originalName + " - results.csv";
	}
	}

Fix in Cursor

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