docs: remove platform-scaffold feature and tasks.

docs/FEATURES/platform-scaffold.md

@@ -1,60 +0,0 @@
-# Feature: Agentic Platform Scaffold
-
-## Status
-
-In Progress
-
-## Goal
-
-Align Socialize with the structure generated by `bootstrap-vdp-agentic.sh` while preserving the current product implementation.
-
-## Backend
-
-The backend is located at:
-
-```txt
-backend/src/Socialize.Api
-```
-
-The solution is:
-
-```txt
-backend/Socialize.slnx
-```
-
-The test project is:
-
-```txt
-backend/tests/Socialize.Tests
-```
-
-## Frontend
-
-The frontend remains the existing Vue 3 app. Feature-owned route views and stores live under `frontend/src/features/<feature>`, while shared app shell code stays under `frontend/src/layouts`, `frontend/src/components`, `frontend/src/plugins`, and `frontend/src/router`.
-
-## API Contract
-
-OpenAPI workflow:
-
-```bash
-./scripts/update-openapi.sh
-```
-
-Writes:
-
-```txt
-shared/openapi/openapi.json
-frontend/src/api/schema.d.ts
-```
-
-## Done When
-
-- [x] Backend code lives under `backend/src/Socialize.Api`
-- [x] Backend solution exists at `backend/Socialize.slnx`
-- [x] Test project exists under `backend/tests/Socialize.Tests`
-- [x] Root scripts exist
-- [x] Docker Compose and Caddy files exist
-- [x] Agentic docs, specs, tasks, and prompts exist
-- [ ] OpenAPI generation verified against a running backend
-- [x] Backend build passes
-- [x] Frontend build passes