feat(runtime): report mission load phases

docs/rendering/renderer_truth_table.md

@@ -38,9 +38,11 @@
   `VulkanSmokeRenderer` с пустым списком materials (явный white-fallback). Режим использует
   отдельный bounded preview loader: normal `load_mission` по-прежнему готовит все reachable
   assets, тогда как preview останавливает asset preparation после первого root с mesh-backed
-  model. Это не является rendered acceptance: fresh GOG `MISSIONS/Autodemo.00/data.tma` test
-  с этим scope всё равно не дошёл до окна за локальный 120-second runner limit, поэтому нет
-  live report, pixel artifact или validation evidence именно для game path.
+  model. `--load-progress <file>` writes the last entered loader phase synchronously for timeout
+  diagnosis. This is not rendered acceptance: fresh GOG `MISSIONS/Autodemo.00/data.tma` test
+  with this scope still did not reach a window in the local 120-second runner; its checkpoint
+  was `Graph`, therefore no live report, pixel artifact or validation evidence exists for the
+  game path.
 - `apps/fparkan-viewer` сейчас inspection-only CLI и не открывает live Vulkan
   asset viewer.
 - Следующий реальный milestone для rendered acceptance: `VulkanAssetRenderer`

docs/tomes/05-render.md

@@ -956,8 +956,11 @@ loading remains full and transactional; the preview scope walks root spans in
 TMA order and stops asset preparation after the first mesh-backed model. It is
 therefore not a hidden relaxation of gameplay validation. A second GOG
 `Autodemo.00` attempt with this narrower asset scope still exceeded 120 seconds
-before opening a window, which locates the remaining startup cost before the
-Vulkan draw loop but does not identify it as terrain versus graph work.
+before opening a window. The diagnostic `--load-progress <file>` checkpoint
+reported `Graph`, which proves the remaining startup cost is in prototype graph
+construction/visual-dependency expansion rather than terrain decode, asset
+preparation, window creation or the Vulkan draw loop. The timeout probe does
+not distinguish individual graph suboperations; no renderer acceptance follows.
 
 `Land.msh` использует отдельный geometry-only bridge: validated `TerrainFace28`
 сохраняет source triangle order, а его positions и packed UV0 попадают в тот же