Add support for adding contacts using the CLI, including remotely

[ianmcorvidae]

No description provided.

[Copilot]

Pull request overview

This PR adds a CLI workflow for sharing and importing “contact” (node/user) information via a shareable URL/QR, enabling users to add contacts to the NodeDB locally or via remote admin actions.

Changes:

• Add Node.getContactURL() and Node.addContactURL() for generating/parsing shareable contact URLs backed by admin_pb2.SharedContact.
• Extend the CLI with --contact-qr (generate + print QR/URL) and --add-contact (import from URL), supporting remote destinations via --dest.
• Add unit tests covering CLI argument plumbing and a protobuf URL encode/decode roundtrip.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
meshtastic/node.py	Implements contact URL generation/parsing and sends AdminMessage.add_contact.
meshtastic/__main__.py	Adds CLI flags and wiring to call the new Node APIs (local or remote).
meshtastic/tests/test_node.py	Adds a protobuf-level contact URL encode/decode roundtrip test.
meshtastic/tests/test_main.py	Adds CLI tests for --add-contact and --contact-qr argument handling.

[codecov]

Codecov Report

❌ Patch coverage is 25.00000% with 51 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.67%. Comparing base (e4f0fb2) to head (9d44509).

Files with missing lines	Patch %	Lines
meshtastic/node.py	3.84%	50 Missing ⚠️
meshtastic/__main__.py	93.75%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #933      +/-   ##
==========================================
- Coverage   63.24%   62.67%   -0.57%     
==========================================
  Files          25       25              
  Lines        4527     4595      +68     
==========================================
+ Hits         2863     2880      +17     
- Misses       1664     1715      +51     

Flag	Coverage Δ
unittests	62.67% <25.00%> (-0.57%)	⬇️

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.