Add Fuchs_Database SSDT project (schema source of truth)

Adds the SQL Server Data Tools project for the fuchs_fds database — tables,
table types, functions and stored procedures that the backend calls (e.g.
fds__getInvoice, fds__merge_bankingtransactions, fds__tt__bankingtransactions,
fds__admin_getReportCatalog, fis_* auth). Build/model caches (bin, obj,
*.dbmdl, *.jfm, *.user) are git-ignored.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Fuchs_Database/dbo/Stored Procedures/fds__getFDSDocument.sql

@@ -0,0 +1,31 @@
+
+-- =============================================
+-- Author:		<Author,,Name>
+-- Create date: <Create Date,,>
+-- Description:	<Description,,>
+-- =============================================
+CREATE PROCEDURE [dbo].[fds__getFDSDocument]
+	@type varchar(10),
+	@reportid varchar(20)
+AS
+BEGIN
+	SET NOCOUNT ON;
+
+	DECLARE @idbigint bigint = TRY_CAST(@reportid as bigint);
+
+	IF @type = 'invoice'
+	BEGIN
+		SELECT TOP(1)
+			[Id] = CAST([Id] as varchar(20)),[type] = @type, [InvoiceID],[DocumentName],[DateOfCreation] = [DateCreated],[fds] = CAST( 1 as bit), [file]
+			,[order] = ROW_NUMBER() OVER (ORDER BY [DateCreated] ASC)
+		FROM [dbo].[fds__invoices] WHERE [id] = @reportid AND [isFinal] = 1;
+	END
+	ELSE IF @type = 'reminder'
+	BEGIN
+		SELECT TOP(1)
+			[Id] = CAST([Id] as varchar(20)),[type] = @type, [ReminderID] = '',[DocumentName],[isInvoice] = 1,[DateOfCreation] = [DateCreated],[fds] = CAST( 1 as bit), [file]
+			,[order] = ROW_NUMBER() OVER (ORDER BY [DateCreated] ASC)
+		FROM [dbo].[fds__reminder] WHERE [id] = @reportid AND [isFinal] = 1;
+	END
+
+END