refactor: add error messages i18n

web/src/lib/i18n/en.ts

@@ -108,7 +108,36 @@ export const en: Dict = {
 		noImageRun: 'This tool does not process images',
 		workerFailed: 'Worker execution failed',
 		workerUnavailable: 'Worker is unavailable',
-		notFound: 'Tool not found'
+		notFound: 'Tool not found',
+		badTransform: 'Degenerate transformation matrix',
+		skewAngle: 'Skew angles cannot be 90° or -90°',
+		badHex: 'Invalid HEX color: "{value}"',
+		radiusInt: 'Radius must be a non-negative integer',
+		kernelSize: 'Kernel does not match the image dimensions',
+		sizeInt: 'Width and height must be integers ≥ 1',
+		cropBounds: 'Crop area does not intersect the image',
+		noCanvasCtx: 'Canvas 2D context is unavailable in this environment',
+		badBase64: 'Expected a base64 string or a data-uri of an image',
+		qualityRange: 'quality must be within 0..1',
+		svgSize: 'Could not determine SVG dimensions',
+		svgLoad: 'Failed to load SVG — check the markup',
+		encodeUnsupported: 'The browser does not support encoding to {mime}',
+		unsupportedFile:
+			'Unsupported file format ({type}). Supported formats are PNG, JPEG, WebP, GIF and BMP.',
+		widthInt: 'Image width must be an integer ≥ 1',
+		noHexPixels: 'No hex pixel values found',
+		badPixelToken: 'Each pixel must be 8 hex characters RRGGBBAA, separated by spaces',
+		pixelCountMismatch: 'Pixel count ({count}) is not divisible by width {width} without a remainder',
+		toolNotFound: 'Tool "{id}" not found',
+		badJson: 'The file is not valid JSON',
+		badPipelineShape: 'The file structure does not look like a chain of steps',
+		pipelineVersion: 'Unsupported chain version: {version}',
+		noSteps: 'The file has no list of steps',
+		paramNumber: 'Parameter "{id}" must be a number',
+		paramString: 'Parameter "{id}" must be a string',
+		resizeSize: 'Width and/or height must be positive',
+		cropSize: 'Crop width and height must be positive',
+		sizePositive: 'Dimensions must be positive and finite'
 	},
 	tools: {
 		'png-is-grayscale': {