feat: Implement mfr truncation fix and enhance invoice handling

- Added a new SQL script to address the "String or binary data would be truncated" error in mfr sync by widening the Note fields in service objects and companies to NVARCHAR(MAX).
- Updated the table types and associated stored procedures to accommodate the changes, ensuring compatibility with existing data.
- Queued a re-sync for previously rejected rows due to truncation issues.
- Created application logins for fuchs_fds and fuchs_web with placeholder passwords for initial setup.
- Introduced functions for invoice backdating and invoice date retrieval to streamline invoice processing.
- Developed a password generation function with customizable parameters for length and character types.
- Added a random number generation function to support password creation.

Fuchs_DataService/Fuchs_DataService.xml

@@ -4,6 +4,47 @@
         <name>Fuchs_DataService</name>
     </assembly>
     <members>
+        <member name="T:fds.FdsColumnWidths">
+            <summary>
+            Explains an mfr merge that failed with "String or binary data would be truncated": SQL Server
+            (message 8152, or 2628 below compatibility level 150 / without VERBOSE_TRUNCATION_WARNINGS)
+            does not name the column, and the merge proc copies the staging table into both the
+            <c>mfr__tt__*</c> table type and the <c>mfr__*</c> target. After such a failure the staged
+            <see cref="T:System.Data.DataTable"/> is compared against the narrower of the two declared widths, so the
+            error log names the column, the longest value and an entity Id.
+            Runs only on the failure path — no cost for a successful merge.
+            </summary>
+        </member>
+        <member name="T:fds.FdsColumnWidths.Overflow">
+            <summary>One column whose staged values exceed the declared width.</summary>
+        </member>
+        <member name="M:fds.FdsColumnWidths.Overflow.#ctor(System.String,System.Int32,System.Int32,System.Int32,System.Object)">
+            <summary>One column whose staged values exceed the declared width.</summary>
+        </member>
+        <member name="M:fds.FdsColumnWidths.IsTruncationError(System.Int32)">
+            <summary>8152 = classic truncation message; 2628 = verbose variant (compat level 150+).</summary>
+        </member>
+        <member name="F:fds.FdsColumnWidths.WidthsSql">
+            <summary>
+            Char width of every bounded string column of the target table and of its
+            <c>mfr__tt__</c> table type (same naming rule as the <c>mfr__updt__</c> merge proc);
+            where both declare the column the narrower wins. MAX columns (max_length = -1) are omitted.
+            Expects parameter <c>@tablename</c>.
+            </summary>
+        </member>
+        <member name="M:fds.FdsColumnWidths.ToWidthMap(System.Data.DataTable)">
+            <summary>Rows of <see cref="F:fds.FdsColumnWidths.WidthsSql"/> → column name → max chars (case-insensitive).</summary>
+        </member>
+        <member name="M:fds.FdsColumnWidths.FindOverflows(System.Data.DataTable,System.Collections.Generic.IReadOnlyDictionary{System.String,System.Int32})">
+            <summary>
+            String columns of <paramref name="batch"/> holding at least one value longer than the
+            declared width, one entry per column with the longest value's length and row Id.
+            Columns without a known width (MAX or not declared) are never reported.
+            </summary>
+        </member>
+        <member name="M:fds.FdsColumnWidths.Describe(System.Collections.Generic.IReadOnlyList{fds.FdsColumnWidths.Overflow})">
+            <summary>Log-friendly summary; "none detected" when the batch fits the declared widths.</summary>
+        </member>
         <member name="T:fds.FdsSqlOptions">
             <summary>
             Logs every SQL error through the worker's structured <see cref="T:Microsoft.Extensions.Logging.ILogger"/> alone — which, when
@@ -29,6 +70,12 @@
             (empty) shape is loaded. Empty when the entity table itself is unknown.
             </summary>
         </member>
+        <member name="M:fds.FdsMfrClient.DescribeOverlongColumnsAsync(System.Data.DataTable)">
+            <summary>
+            Failure path only: names the staged columns wider than the target table / table type allow.
+            Never throws — a failed lookup is reported in the returned text instead.
+            </summary>
+        </member>
         <member name="T:fds.FdsConfig">
             <summary>
             Holds the application <see cref="T:Microsoft.Extensions.Configuration.IConfiguration"/> supplied by the host (the Fuchs web app).