Add IPv6 hint for trustd-pm

[m0baer]

Summary by Sourcery

Add a note to the README requiring IPv6 support and proper localhost-to-::1 name resolution for trustd-pm.

Documentation:

• Add hint that IPv6 must be enabled on the system
• Add instruction to ensure IPv6 name resolution from localhost to ::1 works

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates the README to note that trustd-pm requires IPv6 support and proper localhost-to-::1 name resolution.

File-Level Changes

Change	Details	Files
Add IPv6 requirement hint to documentation	Added note that IPv6 must be enabled for trustd-pm Specified that localhost must resolve to ::1 for proper operation	README.md

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[sourcery-ai]

Hey there - I've reviewed your changes and they look great!

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[ctron]

Thanks for the addition.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.15%. Comparing base (108506e) to head (5a35ef2).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2124   +/-   ##
=======================================
  Coverage   68.14%   68.15%           
=======================================
  Files         371      371           
  Lines       20838    20838           
  Branches    20838    20838           
=======================================
+ Hits        14200    14202    +2     
+ Misses       5799     5794    -5     
- Partials      839      842    +3     

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