"Storage Mode -Protection": Disable Until Charger is Connected

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My new cordless hot glue gun has same problem as many other modern gadgets: It has non-removable battery and too easily operated soft power switch.
This problem gave me an idea to figure out how I could prevent my own circuits from accidentally turning on, if something hits the power button in storage.
This is simple, but effective solution that kills the power from the microcontroller when needed and only returns to normal state when the charger is connected. I call this "storage mode": When device is in storage, it doesn't need to turn on and power button can be disabled. If devices is taken back to everyday use, users connects the charger once and the device is again in normal mode.
0:00 The problem
0.36 "Storage mode"
1:00 PCBWAY
1:19 Other problematic devices
1:27 Components
1:46 Schematics
2:28 Demonstration
3:38 Relay: Expensive, but still preferred?
3:54 Kept simple, can be developed further
4:11 What do you think?
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[@Hackvlog]

Latching relay is fairly new component in my parts bin and I was exited to use them in new circuits. Using microcontroller to switch off it's own power using latching relay may sound silly, but it's actually a decent way to implement this safety feature.
Many laptops have features similar to this "storage mode": A small switch somewhere near the battery, pressing it disconnects the battery until the charger is connected... Made especially for disconnecting the power before taking the laptop apart.

[@fouzaialaa7962]

sacrificing a latching relay and an entire micro controller for a functionality that trivial is pretty wasteful , especially when there is already a tp4056 circuits that have the exact type of protection you want built in.

[@lkahfi]

I prefer using toggle switch with cover so it can't accidentally press