ci: limit desktop build trigger to desktop/frontend paths only

The desktop workflow wraps the Go sidecar binary in a Tauri shell.
Go compilation and correctness are already validated by ci.yml (build,
test, vet, lint). The desktop build only needs to run when the Tauri
wrapper, frontend assets, or workflow config change — not for every
Go code change.

Removed go.mod, go.sum, cmd/, and internal/ from the paths filter.
The desktop-release workflow (tag-triggered) still builds everything
for actual releases.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: wesm

.github/workflows/desktop-artifacts.yml

@@ -6,10 +6,6 @@ on:
     paths:
       - 'desktop/**'
       - 'frontend/**'
-      - 'cmd/agentsview/**'
-      - 'internal/web/**'
-      - 'go.mod'
-      - 'go.sum'
       - '.github/workflows/desktop-*.yml'
 
 permissions: