Contact Directory with Advanced Search

I need a straightforward contact-management directory whose main job is to store and neatly organise both my personal and business contacts. The core requirement is a fast, intuitive advanced-search function that lets me filter by any field in seconds—name, company, email, phone, tags, you name it.

You can build it as a small web app, a lightweight desktop tool, or a clean mobile-friendly interface; whichever stack you’re most productive in is fine with me, so long as the code is well-structured and easy for another developer to maintain. A simple relational database (MySQL, Postgres, SQLite) is perfectly acceptable.

Key deliverables:
• A responsive UI for adding, editing and deleting contacts.
• Clearly separated personal vs. business categories, with the ability to view either set or both together.
• Robust advanced search with multi-field filters and partial-match capability.
• Import/export to CSV or similar so I can move data in and out freely.
• Basic user documentation and a quick run-through of the codebase when you hand it over.

Nice-to-haves such as custom fields or future integrations (calendar, email, etc.) aren’t critical for this phase, but please keep the architecture flexible enough that they can be slotted in later. Let me know your preferred tech stack, an outline of your approach, and how soon you can deliver an MVP.