Add skill groups and GM character owner transfer across stack

README.md

@@ -5,8 +5,6 @@ Fresh full-stack starter scaffold:
 - `RpgRoller/`: ASP.NET Core backend + Blazor frontend host (`Components` + `wwwroot`)
 - `RpgRoller.Tests/`: xUnit integration-heavy test project
 - `RpgRoller.sln`: solution used by local CI script
-- `UX.md`: frontend UX and interaction design specification (pre-implementation baseline)
-- `FRONTEND_PROGRESS.md`: implementation tracking (`Implemented` / `Partially implemented` / `Not yet implemented`)
 
 Test layout:
 
@@ -46,6 +44,11 @@ Backend state persistence:
 - Database schema is created/upgraded automatically on startup via EF Core migrations (`Database.Migrate`)
 - Runtime state is loaded once at startup into memory and written back to SQLite on successful state changes
 
+Gameplay capabilities now include:
+
+- Skill groups per character (create, rename, and assign/reassign skills to groups)
+- GM-driven character owner transfer within campaign management flows
+
 ## Prerequisites
 
 - .NET SDK 10.0+
@@ -96,29 +99,3 @@ dotnet dotnet-ef migrations add <MigrationName> --project RpgRoller/RpgRoller.cs
   ```
 - Coverage collector scope:
   - `RpgRoller.Tests/coverlet.runsettings` now measures the full backend assembly (`RpgRoller`), not only service namespace files.
-
-## Implemented Backend Scope
-
-- Auth: register, login, logout, current user context
-- Session cookie: `HttpOnly`, `SameSite=Strict`, `Secure` when served over HTTPS
-- Rulesets: d6 and dnd5e validation rules
-- Campaigns: create/list/read
-- Characters: create/update/activate/current-campaign list
-- Skills: create/update with ruleset-aware dice expression validation and d6 wild-dice/fumble options
-- Rolls: public/private skill rolls with append-only campaign log; d6 rolls include wild/crit/fumble/add/remove die-state payloads
-- State stream: SSE endpoint for campaign version updates
-
-## Implemented Frontend Scope
-
-- Blazor-driven UI for:
-  - registration, login, logout
-  - play screen and campaign management screen switch
-  - campaign creation and selection
-  - character create/edit via modal forms, with picker selection treated as active character context
-  - skill create/edit via modal forms including d6 wild dice + allow-fumble controls
-  - public/private rolling and campaign log viewing
-  - die-state visualization in Last Roll and Campaign Log (critical, fumble, wild, removed, added)
-- responsive play UX:
-  - desktop two-column (character + log)
-  - tablet/mobile panel switching with bottom tab bar (`Character` / `Log`)
-- SSE-backed live refresh with reconnect status + manual refresh fallback