Share retained runtime GL dispatch

docs/modernization/build-inventory.md

@@ -592,6 +592,9 @@ powershell -ExecutionPolicy Bypass -File scripts\automation\apple-remote-build.p
   Retained RTT clear and masked-clear endpoints also share it for color-mask
   query/apply, clear-color, and buffer-clear callbacks instead of owning a
   local raw clear callback cluster.
+  App startup logging, Windows early context logging/window-title detection,
+  and shader capability detection now share `legacy_gl_runtime_dispatch` for
+  runtime string and extension enumeration callbacks.
   Retained desktop HMD eye rendering also routes viewport
   execution through tested backend dispatch.
   Legacy `Texture2D`, `TextureManager`, `Sampler`, and `RTT` public headers no

docs/modernization/roadmap.md

@@ -889,7 +889,9 @@ OpenGL runtime version/vendor/renderer/GLSL string queries now also use a
 tested `pp_renderer_gl` dispatch contract, leaving `App::init` to log the
 result while the backend owns the query set and order. The Windows entrypoint
 also uses that contract for early context logging and renderer-name window
-title construction before replacing the temporary WGL context.
+title construction before replacing the temporary WGL context. Retained runtime
+info and extension query callback endpoints now share
+`legacy_gl_runtime_dispatch`.
 The default app clear color and color-buffer clear operation now dispatch
 through `pp_renderer_gl` as well, moving another direct OpenGL operation out
 of `App::clear` while preserving the current gray clear behavior; the live
@@ -2611,6 +2613,12 @@ Results:
   clear-color, and buffer-clear callbacks, removing the local raw clear
   callback cluster from `src/rtt.cpp` while RTT render-target execution remains
   retained under DEBT-0036.
+- Retained app startup logging, Windows early context logging/window-title
+  detection, and shader capability detection now share
+  `legacy_gl_runtime_dispatch` for runtime string and extension enumeration
+  callbacks, removing duplicated raw runtime-query clusters from `src/app.cpp`,
+  `src/main.cpp`, and `src/app_shaders.cpp` while runtime/capability probing
+  remains retained under DEBT-0036.
 - Canvas draw-merge shader-blend selection now consumes the extracted
   `pp_paint_renderer` stroke composite planner for current layer and primary
   brush blend modes, while preserving legacy OpenGL compositing execution under