Generalize UI: general status by default, diagnostics behind Debug details

Rework the spike-era debug readouts into general-purpose status, with the
verbose diagnostics gated behind the menu bar's "Debug details" switch:

- Controllers (was "Phase 0 spike"): always shows slot/source + live
  buttons; the raw stick/trigger numbers are debug-only.
- Injection hook status: general view is attached + focus spoof + a single
  "Game reading controller: N polls/s" summary; the per-slot poll table,
  focus-API counts, and input-path detection are debug-only.
- Audio: general view adds a "Buffered: N ms" health/latency proxy
  (AudioMirror now tracks buffered audio in both render paths) and keeps the
  render-stream count; the per-stream table is debug-only.

Default overlay is now clean general status; flip Debug details for the full
diagnostics. Completes the "generalize the UI" roadmap task. All tests pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

host/src/main.cpp

@@ -105,15 +105,15 @@ int run()
 			coop::draw_main_menu_bar(ui, stats);
 			if (ui.show_controllers)
 			{
-				coop::draw_debug_overlay(*input);
+				coop::draw_controllers_panel(*input, ui.debug_details);
 			}
 			if (ui.show_injection)
 			{
-				injection.draw();
+				injection.draw(ui.debug_details);
 			}
 			if (ui.show_audio)
 			{
-				audio.draw_ui(injection.hook_status());
+				audio.draw_ui(injection.hook_status(), ui.debug_details);
 			}
 			if (ui.show_video)
 			{