* web: reference meshcore nodes in chat
* data: add adv_name to messages
* web: address review comments
* derive actual companion from name string
* derive actual companion from name string
* derive actual companion from name string
* web: address review comments
* web: address review comments
* chore: refactor codebase before meshcore release
* data: run black
* fix: resolve SonarCloud S1244/S5796 reliability issues in test files
Replace floating-point equality comparisons with pytest.approx() to
satisfy S1244, and replace the `is` identity operator with id()-based
comparison to satisfy S5796.
* fix: remove duplicate encrypted_flag assignment in store_packet_dict
The encrypted_flag was computed identically on lines 307 and 345 with no
mutation of `encrypted` between them. Remove the dead second assignment.
l5y