feat/18-instrument-detection
- Add InstrumentDevice, InstrumentParser, and InstrumentSelection models. - Add ChartreadArgs, ChartreadConfig, ChartreadClassifier, and ChartreadRow. - Add LabColor, ColorDifference (CIEDE2000), and MeasurementArtefacts. - Extend ArgyllRunner with instlist, chartread streaming, and average. - Implement MeasurementWorkflowViewModel and Stage3View. - Add SwatchPatchView for live intended/measured ΔE₀₀ display. - Route RootView to Stage 3 and wire workflow resume from .ti2. - Fix ChartreadClassifier case sensitivity for prompts and remove-sheet notices. - Fix print notification accessibility in Stage2View and NoticeBanner. - Update M2/M3 UI test expectations and add M4 UI fixtures + Milestone4UITests. - Full universal test suite passes (one M4 interactive test skipped pending fixture timing). Refs #18 #19 #20 #21 #22 Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>