docs: record the Enhanced Input python traps and the gameplay status

MEMORY.md

@@ -77,3 +77,13 @@ Scope: facts and traps that cost time to establish. Planned work lives in [ROADM
 - **`-executePythonScript` + editor is unreliable for captures**: the editor quits right after a *successful* deferred script (async screenshot requests never render), and after `load_map` in a commandlet every `spawn_actor` call returns None — build scenes in the default world instead.
 - **Robust in-game capture recipe**: commandlet builds a map (`ue_build_review_map.py`), then the game runs in `-game` mode and a tiny C++ actor (`AGigLineShotActor`) walks camera setups via `SetViewTarget` + `FScreenshotRequest::RequestScreenshot`. In 5.8 `FScreenshotRequest` has no resolution argument (window size via `-ResX/-ResY`) and no `IsFinished()` — poll `!IsScreenshotRequested()`. Lives in `UnrealClient.h`, not `Misc/ScreenshotManager.h`.
 - **Commandlet-only quirks**: bulk render-target readback (`read_render_target_raw`, `export_render_target`) silently returns empty in commandlets; single-pixel `read_render_target_uv` works. Game targets must use `BuildSettingsVersion.V7`.
+
+## 2026-11-07 — Enhanced Input from Python (UE 5.8)
+
+- **`unreal.InputCoreTypes` does not exist** in the 5.8 Python bindings, and `unreal.Key` takes no constructor argument. Build a key with `k = unreal.Key(); k.import_text("SpaceBar")` — the export text is the key name (`MouseX`, `Gamepad_Left2D`).
+- **Factories are `unreal.InputAction_Factory` and `unreal.InputMappingContext_Factory`**, not `InputActionFactory`. `create_asset(..., factory=None)` also works.
+- **Do not delete an asset and recreate it in the same commandlet run.** `create_asset` returns `None` for a path deleted earlier in that process. Load the existing asset and overwrite it instead (`Tools/ue_create_input_assets.py: fresh()`).
+- **Modifiers on `EnhancedActionKeyMapping` do not survive saving.** Assigning `InputModifierNegate` to the mapping's `modifiers` reads back correctly in memory, even after a `gc.collect()`, but the saved asset reads `mods=[NoneType]`. Keep-alive references, explicit flag setting, and in-place saves all failed to change it. Workaround: bind one action per direction (W and S as separate actions) so no modifier is needed.
+- **A read-only packed `.umap` silently blocks `save_map`.** `EditorLoadingAndSavingUtils.save_map` returned `False` with no error until the file's mode was fixed (`chmod u+w`). Symptom: a rebuilt review map keeps three cameras after a fourth is added.
+- `-run=pythonscript` still swallows `print()`, so write results to a file; `/tmp` is visible to the commandlets even though it is not shared between agent tool calls.
+

ROADMAP.md

@@ -65,7 +65,7 @@ Status detail in [Docs/setup.md](Docs/setup.md); workstation audit in [Docs/envi
 
 ### Gameplay
 
-- [ ] First-person movement, mouse look, and Enhanced Input bindings.
+- [-] First-person movement, mouse look, and Enhanced Input bindings. Implemented 2026-11-07: `AGigLineCharacter` (C++, 1.75 m capsule, 1.60 m eye camera, 4 m/s walk, mouse look in deg/s, jump) as the default pawn, with five actions and an 11-entry context in `/Game/Input` built by `Tools/ue_create_input_assets.py`. **Not yet confirmed interactively** — launch PIE on `Test/ReviewMap` and walk. Screenshot review pending (`Screenshots/README.md`).
 - [ ] Collision, reset, and pause functionality.
 - [ ] Walkable sidewalks and a designated street crossing. Crossing chosen: mid-block signalised crossing, OSM way 385648319, at 130 m along the block (`Geo/verification/2026-11-06-street-profile.md`).
 - [ ] Fixed daytime lighting and basic ambience.