chore: add missing multi-level editor for approval workflow, rename projects to campaings.

docs/TASKS/campaigns/001-rename-projects-to-campaigns.md

@@ -0,0 +1,25 @@
+# Rename Projects To Campaigns
+
+## Goal
+
+Align the codebase terminology with the product language by replacing the `Project` domain surface with `Campaign`.
+
+## Relevant Specs
+
+- `docs/product/glossary.md`
+- `docs/ARCHITECTURE.md`
+
+## Scope
+
+- Rename backend module, entity, DTOs, handlers, EF configuration, and route/tag names from projects to campaigns.
+- Update content item and access-scope references that point at the renamed campaign concept.
+- Update frontend feature naming and API calls where they still refer to projects.
+- Update OpenAPI snapshots if backend contracts change and the backend can run.
+
+## Validation
+
+```bash
+dotnet build backend/Socialize.slnx
+dotnet test backend/Socialize.slnx
+cd frontend && npm run build
+```