Implemented confi snapshots

README.md

@@ -17,6 +17,8 @@ uopi runs as a **single portable binary** with no runtime dependencies. Point an
 | **Plot panels** | Dedicated chart panels with a recursive split layout (tmux/IDE-style) where plots fill the viewport |
 | **Panel logic** | In-editor node-graph flow editor (triggers → actions, dialogs) that runs client-side in view mode |
 | **Control logic** | Server-side always-on flow graphs with cron/alarm triggers and Lua blocks |
+| **Configuration manager** | Versioned configuration **sets** (typed signal schemas, grouped) and **instances** (values) with validation, array/CSV editing, apply-to-signals, and JSON import/export |
+| **Version history & diff** | Git-style history for panels, synthetic signals, control logic and config sets/instances: view, fork, promote any revision, with unified / side-by-side diff |
 | **Local variables** | Panel-scoped state variables for set-points, toggles and counters used by logic |
 | **Historical data** | EPICS Archive Appliance integration via REST; time range picker in UI |
 | **Synthetic signals** | Compose, filter, and transform signals via a wizard or visual node-graph editor (gain, offset, moving average, lowpass, highpass, derivative, integral, clamp, formula); panel/user/global visibility scopes |
@@ -138,12 +140,20 @@ The REST API is available under `/api/v1`. Key endpoints:
 | `POST` | `/api/v1/interfaces/{id}/clone` | Duplicate an interface |
 | `POST` | `/api/v1/interfaces/reorder` | Reorder panels / move them between folders |
 | `GET/PUT` | `/api/v1/interfaces/{id}/acl` | Read or set a panel's sharing rules |
-| `GET` | `/api/v1/interfaces/{id}/versions` | List saved versions of a panel |
 | `GET/POST` | `/api/v1/folders` | List or create panel folders |
 | `PUT/DELETE` | `/api/v1/folders/{id}` | Rename/reparent or delete a folder |
 | `GET/POST/DELETE` | `/api/v1/synthetic` | Manage synthetic signal definitions |
 | `GET/POST` | `/api/v1/controllogic` | List or create server-side control-logic graphs |
 | `GET/PUT/DELETE` | `/api/v1/controllogic/{id}` | Read, update, or delete a control-logic graph |
+| `GET/POST` | `/api/v1/config/sets` | List or create configuration sets (schemas) |
+| `GET/PUT/DELETE` | `/api/v1/config/sets/{id}` | Read, update, or delete a config set |
+| `GET/POST` | `/api/v1/config/instances` | List or create configuration instances (values) |
+| `GET/PUT/DELETE` | `/api/v1/config/instances/{id}` | Read, update, or delete a config instance |
+| `POST` | `/api/v1/config/instances/{id}/apply` | Write an instance's values to their target signals |
+| `GET` | `/api/v1/config/{sets\|instances}/diff` | Structural diff between two revisions |
+| `GET` | `/api/v1/{interfaces\|synthetic\|controllogic\|config/sets\|config/instances}/{id}/versions` | List revisions; `…/{version}` fetches one |
+| `POST` | `…/{id}/versions/{v}/promote` | Promote a revision to current |
+| `POST` | `…/{id}/versions/{v}/fork` | Fork a revision into a new document |
 | `GET` | `/api/v1/me` | Caller identity, access level, groups, logic-edit permission |
 | `GET` | `/api/v1/usergroups` | List configured users and groups (for sharing) |
 | `GET` | `/metrics` | Prometheus-format server metrics |