Own Web platform services directly

docs/modernization/debt.md

@@ -18,6 +18,12 @@ agent or engineer to remove them without reconstructing context from chat.
 
 ## Reductions
 
+- 2026-06-17: `DEBT-0017`/`DEBT-0050`/`DEBT-0053`/`DEBT-0057` were narrowed
+  again. `webgl/src/main.cpp` now binds a concrete
+  `src/platform_web/web_platform_services.*` `PlatformServices` instance
+  directly, so the live WebGL entrypoint no longer depends on
+  `src/platform_legacy/legacy_platform_services.*` for render-context,
+  prepared-file, picker, app-close, or default-canvas behavior.
 - 2026-06-17: `DEBT-0003` was narrowed again.
   `src/platform_windows/windows_runtime_shell.cpp` now binds a local
   `MainWindowSession` object for the live Win32 session, and the window handle,

docs/modernization/roadmap.md

@@ -70,6 +70,22 @@ What is already real:
 - `pp_app_core`
 
 Latest slice:
+- `src/platform_web/web_platform_services.*` now owns the concrete WebGL
+  `PlatformServices` implementation as well as the narrower
+  `WebPlatformServices` helper surface.
+- `webgl/src/main.cpp` now binds that owned concrete Web `PlatformServices`
+  instance directly instead of constructing the cross-platform
+  `platform_legacy` adapter around Web-specific injections.
+- The touched Web render-context acquire/present, app-close dispatch,
+  file/image picker routing, prepared-file handoff, default render-target
+  binding, and default canvas / prepared-file policy path now route through
+  `src/platform_web/web_platform_services.*` instead of the fallback adapter.
+- `pp_platform_api_tests` now compiles and exercises the concrete Web platform
+  service surface on the Windows host build, so the Web platform target is no
+  longer only indirectly covered through the narrower helper interface.
+- `src/platform_legacy/legacy_platform_services.*` no longer has a live
+  platform-entrypoint consumer; it remains only as generic fallback scaffolding
+  still linked into the retained app target graph.
 - `src/platform_web/web_platform_services.*` now owns the concrete Web
   `PlatformServices` implementation and `webgl/src/main.cpp` now binds that
   owned service directly at the WebGL entrypoint.

docs/modernization/tasks.md

@@ -139,6 +139,16 @@ Current slice:
   document-service provider/configuration surface or the touched Apple method
   branches, so the retained fallback adapter is narrower and now focused on the
   Android/Linux/Web path.
+- `src/platform_web/web_platform_services.*` now owns the concrete WebGL
+  `PlatformServices` surface in addition to the narrower helper interface used
+  by `pp_platform_api` tests.
+- `webgl/src/main.cpp` now binds that owned Web `PlatformServices` instance
+  directly instead of constructing the retained `platform_legacy` adapter.
+- The touched Web render-context acquire/present, app-close dispatch,
+  file/image picker routing, prepared-file handoff, and default render-target
+  binding now route through `src/platform_web/web_platform_services.*`.
+- `src/platform_legacy/legacy_platform_services.*` no longer has a live
+  platform-entrypoint consumer and is now down to generic fallback scaffolding.
 - The previous Web narrowing step had already moved WebGL
   publish/flush/default-canvas/save-prepared-file behavior off the old
   `try_*legacy_web*` fallback path before this concrete Web service cut.