Phase 7: cockpit overlay generator, region extraction, and profile editor

Overlay generator (pure, tested) — RioJoy.Core/Overlay:
- FontFitter ports the legacy calc-fontsize auto-fit search (validated against a
  brute-force oracle); OverlayLayoutEngine ports create-data-layer's fit + h/v
  justification and adds per-region 90 deg CCW rotation; OverlayTemplate/Region +
  OverlayTemplateStore hold cell geometry/colour/rotation (regions.json).
- GoobieDataImporter parses the legacy .data label sheet into label rows.
- src/RioJoy.Overlay: SkiaSharp rasterizer (SkiaTextMeasurer shared with the engine
  so measured layout == drawn output; SkiaOverlayRenderer -> PNG;
  ProfileWallpaperGenerator). Verified end-to-end on the real cockpit art
  (regions.json + riojoy.png + TEST.data) by OverlayRenderIntegrationTests.
- RioJoy.Tray/WallpaperApplier applies via SystemParametersInfo; RioCoordinator
  generates+applies on profile activation (opt-in via AppConfig.OverlayTemplatePath).

Region geometry — tools/XcfRegionExtract parses riojoy.xcf (a GIMP-format binary
reader, no GIMP needed) into the 119-cell regions.json: per-layer offsets/size/
font/colour, with 90 deg CCW rotation on a-00 + b-10..b-1F. Base image riojoy.png.
NOTE: the wallpaper positions are a VGA chroma-split display artifact (6 displays),
not the cockpit's logical layout.

Mapping editor (first cut) — RioJoy.Tray/Editor/ProfileEditorForm renders the
config sheet's logical grid (SheetLayout parses the sheet CSV export). The iRIO
word is edited via ButtonBinding <-> RioMapEntry.Create (no hex bit-twiddling), with
a context-sensitive picker: keyboard keys by name (KeyCatalog VK names), joystick
Button N, hat direction, mouse/RIO-command enum names; modifiers only for keyboard.
Opened from the tray ("Edit profile..."). The sheet-grid layout is a starting point
that needs rework from a better-formatted source.

~220 xUnit tests green. Docs (PLAN.md, README) updated.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/PLAN.md

@@ -100,7 +100,7 @@ tray menu is always available.
 ## Phases
 
 ### Phase 0 — Repo & scaffold ✅ (this commit)
-- `git init`, remote `https://gitea.mysticmachines.com/VWE/riovjoy2.git`.
+- `git init`, remote `https://gitea.mysticmachines.com/VWE/RIOJoy.git`.
 - Legacy C++ moved to `legacy/`; cockpit art to `docs/reference/`.
 - Solution `RioJoy.sln` with `src/RioJoy.Core` (lib) + `src/RioJoy.Tray`
   (tray app); `driver/` placeholder for the WDK project.
@@ -183,7 +183,7 @@ Implemented in `src/RioJoy.Core/Calibration` + `Plasma` (105 xUnit tests total):
 
 ### Phase 5 — Tray app + profiles — code-complete ✅
 Core logic in `src/RioJoy.Core/Profiles` + `RioRuntime`; UI/OS in `src/RioJoy.Tray`
-(123 xUnit tests total):
+(136 xUnit tests total across the suite):
 - `RioProfile` + `AppConfig` model; `ConfigStore` JSON persistence (round-trip
   tested); `RioIniImporter` ports the legacy `RIO.ini` (buttons/inverts/greeting).
 - `AutoSwitchResolver` + `AutoSwitchWatcher`: the three-state decision
@@ -205,20 +205,54 @@ Core logic in `src/RioJoy.Core/Profiles` + `RioRuntime`; UI/OS in `src/RioJoy.Tr
   acquire/release lifecycle against real RIO hardware.
 
 ### Phase 6 — Packaging / signing / deploy
-- Driver install via `pnputil`; app installer; test-signing script.
-- Cabinet deployment doc. (Production option: attestation signing.)
+- Driver test-signing + `pnputil` install already scripted (`driver/sign.ps1`,
+  `driver/install.ps1`, `driver/uninstall.ps1`, [`driver/README.md`](../driver/README.md));
+  proven on the cabinet. ⏳ Still to do: app installer, a single bundled deploy,
+  and a cabinet deployment doc. (Production option: attestation signing.)
 
-### Phase 7 — Profile/mapping editor + cockpit overlay generator
+### Phase 7 — Profile/mapping editor + cockpit overlay generator — in progress
 Replaces the legacy Google-Sheet → `.data` → GIMP → Script-Fu pipeline
 (see [`docs/reference/customBackground/`](reference/customBackground/)).
-- **Mapping editor:** per-button UI to set action + label + lamp, no hex
-  bit-twiddling; clone-from-existing profile.
-- **Overlay generator:** render labels into named regions over a base cockpit
-  image using **SkiaSharp**, porting the auto-fit/justification logic from
-  `sg-goobie-MFD.scm`; export the per-profile wallpaper and re-apply via
-  `SystemParametersInfo`.
-- **Region authoring:** extract the label rectangles from `riojoy.xcf` into a
-  `regions.json`; in-app box editor for future tweaks.
+- **Overlay generator — done ✅, verified on real assets.** `RioJoy.Core/Overlay`
+  is the pure, unit-tested layout engine: `FontFitter` is a faithful port of the
+  `calc-fontsize` auto-fit search (validated against a brute-force oracle),
+  `OverlayLayoutEngine` ports `create-data-layer`'s fit + horizontal/vertical
+  justification, and `OverlayTemplate`/`OverlayRegion` (a `regions.json` via
+  `OverlayTemplateStore`) hold the cell geometry/color. Label text is per-profile
+  (`RioProfile.OverlayLabels`); `GoobieDataImporter` reads the legacy `.data`
+  sheet into label rows. The rasterizer lives in `src/RioJoy.Overlay`
+  (**SkiaSharp**): `SkiaTextMeasurer` (shared with the engine so measured layout
+  == drawn output) + `SkiaOverlayRenderer` (draw labels → PNG). The full chain is
+  exercised end-to-end on the real cockpit art (`regions.json` + `riojoy.png` +
+  `TEST.data`) by `OverlayRenderIntegrationTests`. `RioJoy.Tray/WallpaperApplier`
+  applies the result via `SystemParametersInfo`.
+- **Region authoring — extraction done ✅.** `tools/XcfRegionExtract` parses the
+  GIMP source (`riojoy.xcf`) and writes the 119-cell
+  `docs/reference/customBackground/regions.json` (per-layer offsets/size/font/color,
+  `BaseImagePath` → exported `riojoy.png`), anchored by `CockpitRegionsTests`.
+  ⏳ Still to do: an in-app box editor for tweaks.
+- **Runtime wiring — done ✅ (opt-in).** `RioJoy.Overlay/ProfileWallpaperGenerator`
+  renders a profile's labels onto the template base image; `RioCoordinator`
+  generates + applies the wallpaper on profile activation when
+  `AppConfig.OverlayTemplatePath` is set (best-effort, off by default, never breaks
+  activation). The live `SystemParametersInfo` apply changes a user setting, so it
+  is gated behind config and not exercised by tests. ⏳ Optional: restore the prior
+  wallpaper when going dormant.
+- **Mapping editor — first cut done ✅.** `RioJoy.Tray/Editor/ProfileEditorForm`
+  shows the cockpit as a scrollable, clickable grid that mirrors the legacy
+  authoring spreadsheet's **logical** layout — parsed from the sheet's CSV export
+  (`docs/reference/customBackground/config-sheet.csv`) by `SheetLayout`, coloured
+  by section. (The layout deliberately follows the sheet, **not** the wallpaper
+  region positions: the wallpaper drives 6 displays via VGA chroma-channel
+  splitting, so its label positions stack and don't reflect the physical cockpit.)
+  Clicking an address cell edits its label and action/modifiers/lamp; the `iRIO`
+  word is read/written through `ButtonBinding` ↔ `RioMapEntry.Create` (round-trip
+  tested) — no hex bit-twiddling. The value field is a **context-sensitive picker**:
+  keyboard actions pick a key by name (`KeyCatalog` VK names), joystick a Button N,
+  hat a direction, mouse/RIO-command the enum name; modifiers enable only for
+  keyboard. Opened from the tray ("Edit profile…"); Save persists the profile.
+  ⏳ Still to refine: grouping a button's two bank addresses (edit once → both),
+  and clone-from-existing.
 - The unified profile JSON supersedes both `RIO.ini` and the Google Sheet, with
   importers for each.
 - To confirm at Phase 7: target wallpaper resolution(s); static wallpaper vs.