feat: centralize vital sign configurations and utilities in vital-signs.ts

[ipuppet]

This pull request refactors how vital sign and blood test configuration data is managed and displayed across several components. It centralizes configuration for vital signs and blood tests into shared modules, improves consistency in labeling, units, chart domains, and colors, and updates UI components to leverage these centralized configurations for better maintainability and clarity.

Centralization and Consistency of Vital Sign Configuration

• Replaces local vital sign config imports with centralized imports from @/lib/vital-signs in multiple components, ensuring all vital sign labels, units, abbreviations, chart domains, and colors are managed from a single source. (blood-pressure-input.tsx, individual-vital-signs-form.tsx, latest-observations-display.tsx, observation-chart.tsx) [1] [2] [3] [4]

Improved Chart Rendering and Tooltip Formatting

• Updates all observation chart components to use the centralized config for chart domains, colors, labels, and units, resulting in consistent chart appearance and tooltip formatting for each vital sign. (observation-chart.tsx) [1] [2] [3] [4] [5] [6] [7] [8] [9]

Consistent Display of Vital Sign Labels and Units

• Updates the latest observations display to use centralized labels and units for all vital signs, replacing hardcoded strings with values from config for improved clarity and consistency. (latest-observations-display.tsx)

Blood Test Labeling Improvements

• Uses a helper function getBloodTestLabel from the centralized constants module to display user-friendly blood test names in the blood test request form. (blood-test-request-form.tsx) [1] [2]

Unit Correction

• Fixes the displayed unit for blood sugar in the bulk vital signs form from mmol/L to mg/dL for accuracy. (bulk-vital-signs-form.tsx)