Document water temperature production workflow

docs/PRODUCT_WORKFLOWS.md

@@ -2,6 +2,10 @@
 
 This document records the current understanding of the visible workspaces. It should be updated when workplace users clarify the real operational purpose.
 
+## Operator language
+
+Operator-facing workspace names, map names, export names, and production labels should use the established Latvian newsroom terminology. Development discussion and internal code may remain in English where useful, but that must not force English wording into the interface used by Latvian operators.
+
 ## Home
 
 Entry point and navigation overview. It identifies the development dataset and links to each workspace.
@@ -69,8 +73,39 @@ The weather symbols are not automatically derived from the historical temperatur
 
 Symbol selection is manual, but placement is automatic. Each Faktiskā position owns a fixed marker layout that attaches the selected font glyph to the actual rendered edge of its temperature badge. Operators do not position symbols for each export; per-station offsets can be refined centrally against the production master.
 
+Completed Faktiskā checkpoint:
+
+- fixed 13-position station set with no repeated city selection;
+- automatic latest-temperature loading with observation time and stale/missing states;
+- manual temperature correction and reset to the fetched value;
+- manual wind direction, speed, and gust values;
+- manual Daira weather-glyph selection with apply-to-all and station exceptions;
+- automatic badge-relative glyph placement with shared optical correction;
+- guarded 3840×1440 export using the fixed wind production artwork.
+
 Valmiera is included in the development seed so all 13 fixed positions can be exercised. Monta is the production typeface; Rubik remains temporary until the authorized Monta font files are supplied. The export dimensions are locked, but final pixel-level placement must still be compared against the production masters after Monta is installed.
 
+## Ūdens temperatūra
+
+Purpose: prepare the fixed water-temperature newsroom map as a separate production workflow. It must not be mixed into Faktiskā or City Analysis.
+
+Authoritative references:
+
+- `UDENS_TEMPERATURA.png` defines the finished on-air composition;
+- `UDENS_TEMP_NOSAUKUMI.png` defines the operator-facing names of the manually entered water areas/fields.
+
+Required behavior:
+
+1. Open the dedicated **Ūdens temperatūra** workspace.
+2. Display the fixed set of Latvian-named water-temperature fields.
+3. Enter or correct every water temperature manually.
+4. Place values automatically at their locked production positions.
+5. Preview and download either a 1920×1080 or 3840×1440 PNG.
+
+The background, title, source, field set, and value positions remain fixed. Only the water-temperature values are routinely edited. Both output sizes are production requirements and must be validated independently; implementation must not assume that browser preview dimensions define export geometry.
+
+Implementation status: documented and approved as the next separate workspace; not yet coded.
+
 ## Latvia overview
 
 Purpose: aggregate selected fields across Latvia for a selected time range.