chore: evaluate structured logging per AGENTS.md rule 1 — no addition justified (#47)

- Existing toasts + truncated stderr provide the actionable information for users and errors
- Adding persistent debug logs would introduce state, rotation, and maintenance concerns
- with no demonstrable improvement to UX, decisions, or security for normal operation
- Explicit no-op commit closes the planning issue

Written by AI agent working for @jtmorris. Model: Grok build-0.1.

tailscalectl/TailscaleWidget.qml

@@ -114,6 +114,8 @@ PluginComponent {
             }
 
             // #42 poll-then-act: if a toggle was requested, use the *fresh* state we just received
+            // #47: structured logging evaluated and rejected — toasts + 120-char stderr already give
+            // actionable feedback; persistent logs would add state/rotation with no net UX benefit.
             if (root._pendingToggle) {
                 root._pendingToggle = false
                 toggleProcess.command = TailscaleLib.buildToggleCommand(root.isConnected)