Probe world map mappin routes

docs/red4ext-logging-shim.md

@@ -1,6 +1,7 @@
 # RED4ext logging shim
 
-`EdgeWeightGPS` is a minimal RED4ext plugin used to verify a native logging foothold without changing gameplay data.
+`EdgeWeightGPS` is a RED4ext plugin used to probe native GPS/mappin code paths
+without changing gameplay data.
 
 It writes `EdgeWeightGPS.log` beside the installed DLL:
 
@@ -12,11 +13,19 @@ Current behavior:
 
 - Logs plugin load/unload.
 - Logs the RED4ext plugin handle and SDK pointer value passed to `Main`.
-- Does not call game RTTI or register script functions.
+- Registers Running game-state callbacks so route tests can be timestamped.
+- Hooks selected native wrappers and cores around `GPSSystem`, mappin tracking,
+  world-map mappin selection, and map path framing.
+- Resolves the native mappin system when one of those paths fires, logs relevant
+  vtable slot addresses, and temporarily hooks the route-adjacent slots.
 
-Planned next step:
+Current route-probe focus:
 
-- Build a richer RTTI/hooking variant with an MSVC-compatible Windows toolchain or a narrower hand-written SDK surface. The upstream RED4ext SDK headers build under MinGW for loader-only use, but the full SDK/static library currently pulls in generated native/GPU structures with MSVC layout assumptions.
+- `FrameMappinPath` wrapper/core: `0x27c4314`, `0x27bc1ec`
+- `SetSelectedMappin` wrappers/core: `0x27c4a38`, `0x27c4944`,
+  `0x27c49c4`, `0x27c1684`
+- `TrackCustomPositionMappin` wrapper/core: `0x27c4aac`, `0x27c2318`
+- mappin-system slots `0x1f0`, `0x280`, and `0x2f0`
 
 Build and install from the Fedora toolbox: