feat: enhance button styling with light variant and conditional color…

[mikannkann]

…s in transaction item and edit project modal

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Closes #229

[Copilot]

Pull request overview

This PR enhances button styling by introducing a "light" variant to buttons in the EditProjectModal and adds conditional color styling to the transaction amount display in TransactionItem.

• Adds "light" variant to all action buttons (delete and add buttons) in EditProjectModal for a more subtle appearance
• Changes button colors from "green.5" to "green" to use standard Mantine theme colors
• Introduces conditional gray coloring for transaction amounts when direction is "both"

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/components/TransactionItem.tsx	Adds conditional gray color to PAmount component when transaction direction is "both"
src/components/EditProjectModal.tsx	Updates button styling to use "light" variant and standardizes green color from "green.5" to "green" for consistency

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[Copilot]

The hardcoded hex color value "#C9C9C9" is inconsistent with the project's color usage patterns. The codebase consistently uses Mantine's theme color tokens (e.g., "dimmed", "blue", "gray.7") rather than hardcoded hex values. Consider using a theme color like "gray" or "dimmed" instead for better maintainability and theme consistency.

Suggested change

	c={direction === "both" ? "#C9C9C9" : undefined}
	c={direction === "both" ? "dimmed" : undefined}