Non-functional changes:

• factors uses of lerp_gamma() for neutrals into pallete_v2.rs
• removes editor theme; editor now uses the ws theme directly
• editor code block syntax highlighting now respects the ws theme

Functional changes:

• foreground green, yellow, and cyan: darkened for light mode
• egui sync button: blue -> grey
• egui suggested docs icon from blue -> magenta
• md cursor/selection, inline code, active fold buttons in dark mode: green -> blue
• md inline code: re-introduces borders
• md inline code and table header rows: lightens background in light mode
• md code blocks: colors updated to match theme

Dark Mode
Before:

After:

Light Mode
Before:

After: