feat: add copy-to-clipboard for contract addresses and tx hashes

[MAN7A-afk]

closes #231

Goal Enhance the user experience by allowing quick copying of critical blockchain identifiers (contract IDs, transaction hashes, and wallet addresses) directly from the UI.

Changes

• Vault Dashboard : Added a new row in the Strategy Overview for the Contract Address and integrated CopyButton for both the Strategy ID and Contract Address .

• Transaction History : Updated the transaction hash column to include a copy icon next to the explorer link.

• Transaction Receipt : Added copy functionality for the Wallet Address and Transaction Hash on the dedicated receipt page.

• UI/UX : Utilized the existing CopyButton component to ensure consistent feedback (icon change + toast notification) and accessibility compliance.
  Files Modified

• VaultDashboard.tsx : Added contract address display and copy buttons.

• TransactionHistory.tsx : Added copy button to the transaction hash column.

• TransactionReceipt.tsx : Added copy buttons for wallet and hash fields.
  Acceptance Criteria Verified

• Copy succeeds using the established copyTextToClipboard utility.

• Brief toast confirmation appears on successful copy.

• Icons provide immediate visual feedback.

• aria-label and aria-live attributes ensure screen reader accessibility.

• Buttons are keyboard-focusable and triggerable.
  Screenshots/Demo

• Strategy Overview now shows: Contract: [Hash] [Copy Icon]

• Transaction Table now shows: [Hash] [Copy Icon]

• Receipt Page now shows copy icons next to all long hex strings.

[MAN7A-afk]

@Junirezz if you still can please merge and award points

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