MeshTerm 0.3.4

The macOS installers of 0.3.3 never built: the notices step refused pyobjc-core and
pyobjc-framework-libdispatch, whose wheels ship no licence text. Their MIT text is vendored
now, and a test checks every vendored path on every platform.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

docs/cli.md

@@ -1460,7 +1460,7 @@ each link; the scripted face prints the link alone.
 **`--json`:**
 
 ```json
-{"page":"discord","title":"Join Discord","version":"0.3.3","text":"Join the Discord\n  Questions, ideas, bug reports, and mesh talk.\n\n  • https://discord.gg/AZwe5Uvb3S","links":["https://discord.gg/AZwe5Uvb3S"]}
+{"page":"discord","title":"Join Discord","version":"0.3.4","text":"Join the Discord\n  Questions, ideas, bug reports, and mesh talk.\n\n  • https://discord.gg/AZwe5Uvb3S","links":["https://discord.gg/AZwe5Uvb3S"]}
 ```
 
 | Field | Type | Meaning |