Audio guestbook & memory phone

PROJECT: Rotary Memory Phone System Goal: Create a fully assembled vintage rotary phone that functions as both a wedding audio guestbook and a long-term family memory phone. Required Features: Wedding Mode: * Pick up handset * Greeting message plays automatically * Guest leaves message after beep * Message saved automatically * No dialing required Home Mode: * Pick up handset * Dial category number * Play existing messages for that category * Option to record new messages * Messages organized by category Example of categories: 0801= Wedding Messages 0202 = household member 1 - record on record toggle. Playback persons messages on playback mode 1001 = household member 2 Etc. with the ability to program new numbers for more people. Hardware Requirements: * Vintage rotary phone * Raspberry Pi Zero 2 W (or whatever you think works best for this) * Internal SD card storage * USB export capability * Functional rotary dial input * Functional handset microphone and speaker * Hidden Wedding/Home mode switch * Optional LED indicator for new messages Recording Requirements: * Recordings stored as WAV or MP3 files * Organized by category folders * Accessible via SD card and USB export Playback Requirements: * Phone announces available messages * Playback through handset speaker * Random playback option * Sequential playback option Delivery Requirements: * Fully assembled and tested * Demonstration video showing all functions * Backup copy of source code * Wiring documentation * Ready for immediate use at wedding and later home installation