feat: build execution actions and proposal status displays (#133)

[whitezaddy]

closes #133

Description

This Pull Request resolves #133 by extending the ProposalCard UI component to handle explicit withdrawal execution flows and real-time proposal status lifecycle tracking within the DAO dashboard.

Core Changes

• Status Badges & Coloring: Integrated distinctive state mapping with color-coded badges matching the requirements taxonomy (pending=yellow, approved=blue, executed=green, rejected=red, expired=grey).
• Conditional Actions:
  • Added an Execute Withdrawal button visible exclusively to verified members when a proposal status hits approved.
  • Replaced the standard evaluation interactive inputs with a dedicated Finalize action container for expired proposals.
• Ledger-Based Expiry Timer: Implemented a minute-interval countdown utility that calculates pending proposal shelf-lives based on a ~5s/ledger chain tick rate.
• Collapsible Groups: Automatically groups and collapses past state markers (executed and rejected) into a toggleable section to clear up layout bloat.

Type of change

• Bug fix
• New feature
• Documentation update
• Other

Checklist

• I have read the contributing guidelines
• I have tested my changes locally (verified clean compiling execution via local Turborepo builds)
• My code follows the project's coding standards

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