docs: document v7.13.0 features

- Live formulas (HARDFORMULA/SOFTFORMULA) in dcc-validations with operator-friendly explanations
- MPE_VALIDATIONS table doc: add HARDFORMULA/SOFTFORMULA to RULE_TYPE values
- Roadmap: mark Frontend Formulae and Regex Rules as delivered
- SAS VA Embed: document Live vs Confirm filter modes
- ViewBoxes: document edge/corner drag resizing
- Licensing: combined-key paste, key preview, protocol warning
- CAS Tables: REPLACE load type support and temp table cleanup
- Editor: native date/time pickers, paste-validation overlay, row status indicators
- Stage page: Formatted/Unformatted toggle on the approvals screen
- Viya deploy: configurator improvements, deploy checks, login page UX
- Index page: add live formulas and VA embed to features list

docs/dc-userguide.md

@@ -48,6 +48,18 @@ After this, remaining columns are shown.  Dates / datetime fields have appropria
 
 New rows can be added using the right click context menu, or the 'Add Row' button.  The data can also be sorted by clicking on the column headers.
 
+#### Native Date and Time Pickers
+
+Date, time, and datetime columns use native browser pickers when editing a cell.  This provides a familiar calendar and time selector, and respects your browser's locale settings for date and time formats.
+
+#### Paste Validation Overlay
+
+When you paste data into the editor (or drag to autofill cells), a confirmation overlay appears so you can review the changes before they are applied.  All pasted values are checked against your configured [validation rules](/dcc-validations/).  For large pastes, a progress indicator shows how many cells have been validated.
+
+#### Row Status Indicators
+
+Each row's header cell is colour-coded to show its current status - modified, added, deleted, or unchanged.  The "modified" indicator uses a `±` symbol so you can quickly spot which rows have changed.
+
 When ready to submit, hit the SUBMIT button and enter a reason for the change.  The owners of the data are now alerted (so long as their email addresses are in metadata) with a link to the approve screen.
 If you are also an approver you can approve this change yourself.
 
@@ -60,7 +72,7 @@ Data Controller supports special missing numerics, ie - a single letter or under
 The Data Controller only permits BiTemporal data uploads at a single point in time - so for convenience, when viewing data in the edit screen, only the most recent records are displayed.  To edit earlier records, either use file upload, or apply a filter.
 
 ### Submitted
-This page shows a list of the changes you have submitted (that are not yet approved).
+This page shows a list of the changes you have submitted (that are not yet approved).  When you open a submitted change for review, you can toggle between viewing the data with SAS formats applied (eg formatted dates and currency) or as raw underlying values.  This is useful when you need to verify the exact value being submitted rather than its display representation.
 
 ### Approvals
 This shows the list of changes that have been submitted to you (or your groups) for approval.