iPhone Contact Filtering Solution

I need a straightforward way to silence every caller and texter on my iPhone except one specific contact whenever I’m in a meeting. Calls and texts from that chosen person (my wife) must still ring through; everyone else should be muted until I turn the filter off.

Here’s what matters:
• It must cover both calls and texts, not just one or the other.
• I’m fine with either a clever use of built-in Focus / Do Not Disturb settings, a Shortcut, or a third-party app—whichever reliably delivers the result.
• Extra conveniences such as quick on/off toggles, schedule presets, or small automations are welcome if they make the workflow smoother, but the core requirement is the selective blocking itself.

Deliverable
1. A clear, repeatable setup (written steps, screenshots, or a concise video) that I can follow to replicate the configuration on my device.
2. If the method involves an app or shortcut you create, supply the finished installable file and any necessary instructions.
3. Brief testing guidance so I can confirm both calls and texts behave as intended before declaring the job complete.

Please base your approach on the current iOS release, note any version limitations, and keep the process as simple as possible for everyday use.