feat: Ports command polish

[drewmalin]

Updates the ports command tree:

• Collapses HTTP and TCP/UDP into a single table, incudes port ID
• Allows for get on a single port, which includes all data in a list
• Uses open and remove/rm for creating and deleting ports
• Allows port removal or read to target the destination of an indicated instance or the unique port ID
• Allows sequential port allocation
• Allows updating of port details
• Includes port type in get/json data

Somewhat unrelated, but this also starts to use the "Brev Connect" terminology more explicitly, rather than the "external" naming.

Screen.Recording.2026-09-15.at.17.25.26.mov

[codecov]

Codecov Report

❌ Patch coverage is 73.65729% with 103 lines in your changes missing coverage. Please review.
✅ Project coverage is 31.86%. Comparing base (17ccd79) to head (9ce9800).
⚠️ Report is 19 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/cmd/ports/ports.go	70.29%	22 Missing and 8 partials ⚠️
pkg/cmd/ports/open.go	83.33%	14 Missing and 6 partials ⚠️
pkg/cmd/ports/close.go	75.71%	13 Missing and 4 partials ⚠️
pkg/cmd/cmd.go	0.00%	14 Missing ⚠️
pkg/cmd/ports/get.go	80.70%	8 Missing and 3 partials ⚠️
pkg/cmd/ls/ls.go	0.00%	6 Missing ⚠️
pkg/cmd/ports/update.go	75.00%	4 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #478      +/-   ##
==========================================
+ Coverage   24.67%   31.86%   +7.18%     
==========================================
  Files         134      153      +19     
  Lines       18337    21709    +3372     
==========================================
+ Hits         4525     6917    +2392     
- Misses      13335    14053     +718     
- Partials      477      739     +262     

Flag	Coverage Δ
Linux	31.86% <73.65%> (+7.18%)	⬆️

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