Add search and filter controls to the invoice list

[Cedarich]

• Complexity: Medium
• Overview: Make the invoice dashboard usable for merchants with growing invoice volume.
• Scope:
  • Support search by invoice number, client name, email, and status.
  • Add mobile-friendly filters and empty states.
• Acceptance criteria:
  • Results update predictably for combined search and filter input.
  • Filter state is preserved while navigating between screens.

[Favourof]

I will like to eork on this issue.

[abdulomeiza]

I am a Full Stack Developer specializing in Next.js,Python, TypeScript, Node.js,Rust, PostgreSQL,Oracle, JavaScript and DevOps Engineering. With over 50 contributions across projects in web3 and specifically stellar ecosystem, I’ve developed strong proficiency in delivering high-quality solutions and resolving complex issues within tight deadlines. My experience spans frontend, backend, smart contracts, and the optimization and maintenance of scalable codebases. I can handle this task. Kindly assign.

[grantfox-oss]

🦊 GrantFox — @abdulomeiza has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #145)
2. Your PR will be reviewed by the ZyntariHQ maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign campaign!

@abdulomeiza's PR #216 was approved and merged by @Cedarich.

🏆 @abdulomeiza: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (83 total points). Track your full progress on GrantFox.

👏 Great work, @abdulomeiza! Keep contributing to ZyntariHQ.