Add timezone-conversion and dashboard-widget SQL functions; remove obsolete backup__ copies

Add datetime_LocalToUTC / datetime_utcToLocal, and two widget query
functions (fds_wdg_MFRSync, fds_wgd_lastEmails). Remove the unreferenced
backup__fds__* function files superseded by their current counterparts,
and suppress SQL71501 (unresolved cross-database/composite references)
project-wide.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Fuchs_Database/dbo/Functions/fds_wdg_MFRSync.sql

@@ -0,0 +1,33 @@
+CREATE   FUNCTION dbo.fds_wdg_MFRSync ()
+RETURNS TABLE
+AS
+RETURN
+(
+    WITH LastPerTableAction AS
+    (
+        SELECT
+            [table],
+            [action],
+            [timestamp],
+            TRY_CAST(JSON_VALUE([info], '$.count') AS INT) AS ItemCount,
+            ROW_NUMBER() OVER (PARTITION BY [table], [action] ORDER BY [timestamp] DESC) AS rn
+        FROM [dbo].[fds__log]
+        WHERE --[action] IN (N'imdu_reset', N'imdu_short', N'update_reset', N'update_short')
+            [timestamp] > DATEADD(DAY, -3, GETUTCDATE())
+    ),
+    Formatted AS
+    (
+        SELECT
+            [table],
+            [action],
+            CONCAT(FORMAT([dbo].[datetime_utcToLocal]([timestamp], null), 'dd.MM. HH:mm', 'de-DE'), 'Uhr - (', ISNULL(CONVERT(varchar(20), ItemCount), 'n/a'), ' Datensätze)') AS Cell
+        FROM LastPerTableAction
+        WHERE rn = 1
+    )
+    SELECT [Info] = SUBSTRING([table], 6, 100), [imdu_reset], [imdu_short], [update_reset], [update_short]
+    FROM Formatted
+    PIVOT
+    (
+        MAX(Cell) FOR [action] IN ([imdu_reset], [imdu_short], [update_reset], [update_short])
+    ) AS pvt
+);