added improvements on set proces and minor other improvements

Fuchs/Services/IComService.cs

@@ -2,7 +2,7 @@
 
 /// <summary>
 /// Abstraction for outbound communication: email and SMS.
-/// Backed by the ProcessWeb Mailer API (POST /api/mailer?fn=push_com).
+/// Backed by the ProcessWeb Mailer API (POST {BaseUrl}/mailer/push_com).
 /// </summary>
 public interface IComService
 {

Fuchs/Services/InvoiceDraftEditService.cs

@@ -1,4 +1,4 @@
-using System.Globalization;
+using System.Globalization;
 using System.Text.RegularExpressions;
 using Fuchs.intranet;
 using Microsoft.Extensions.Logging;
@@ -247,10 +247,53 @@ public sealed class InvoiceDraftEditService : IInvoiceDraftService
                 block_net   = session.Sums.NetByBlock
             },
             validation = session.ValidationMessages.Select(v => new { field = v.Field, severity = v.Severity, message = v.Message }),
-            historyCount = session.History.Count
+            historyCount = session.History.Count,
+            notes = BuildNotes(session),
+            setDisplay = BuildSetDisplay(session)
         };
     }
 
+    /// <summary>
+    /// Authoritative per-item set-pricing display flags (ADR 0006/set-pricing): for every block
+    /// that contains a "set" item, runs the same <see cref="InvoiceSetPricing.Build"/> the PDF
+    /// uses (keyed by <c>admin.setmode</c>) and returns a flat map of item id → whether its
+    /// price/total should be shown and whether it is a set header. The online editor applies
+    /// this to the rendered rows so it always matches the PDF without duplicating the pricing
+    /// rules client-side.
+    /// </summary>
+    private static Dictionary<string, object> BuildSetDisplay(InvoiceDraftSession session)
+    {
+        var result = new Dictionary<string, object>();
+        var mode = InvoiceSetPricing.ParseMode(Str(session.Admin["setmode"]));
+        foreach (var blockTok in session.Req)
+        {
+            if (blockTok is not JObject block || block["items"] is not JArray itemsArr) continue;
+            List<Dictionary<string, object?>>? items = itemsArr.ToObject<List<Dictionary<string, object?>>>();
+            if (items == null || !InvoiceSetPricing.ContainsSets(items)) continue;
+
+            foreach (var line in InvoiceSetPricing.Build(items, mode))
+            {
+                if (string.IsNullOrEmpty(line.Id)) continue;
+                result[line.Id] = new { p = line.ShowPrice, h = line.IsSetHeader };
+            }
+        }
+        return result;
+    }
+
+    /// <summary>
+    /// Renders the backend-authoritative notice paragraphs (see <see cref="FuchsPdf.BuildInvoiceNotes"/>)
+    /// for the editor's read-only preview — the same text the PDF will show, generated from the
+    /// same builder, so the two can never drift apart.
+    /// </summary>
+    private IEnumerable<object> BuildNotes(InvoiceDraftSession session)
+    {
+        var fds = BuildFdsData(session);
+        fds.InvoiceRegistration = SynthesizeRegistration(session);
+        bool p13b = AsBool(session.Admin["p13b"]);
+        return FuchsPdf.BuildInvoiceNotes(new FuchsPdf.FdsTextBlocks(), fds, p13b)
+            .Select(n => new { text = n.Text, style = n.Style });
+    }
+
     public IReadOnlyList<ChangeHistoryEntry> GetHistory(string token) =>
         _cache.Get(token)?.History ?? (IReadOnlyList<ChangeHistoryEntry>)Array.Empty<ChangeHistoryEntry>();
 
@@ -385,7 +428,9 @@ public sealed class InvoiceDraftEditService : IInvoiceDraftService
         var tokens = new List<string>();
         if (AsBool(session.Admin["p13b"])) tokens.Add("§13b");
         string setmode = Str(session.Admin["setmode"]).Trim().ToLowerInvariant();
-        if (setmode is "itemprices" or "setonly") tokens.Add("setmode:" + setmode);
+        // Mirrors FdsInvoiceData.BuildInvoiceOptions: persist any explicitly-chosen mode
+        // (including the default "setprice") so it is distinguishable from "never touched".
+        if (setmode is "setprice" or "itemprices" or "setonly") tokens.Add("setmode:" + setmode);
         return string.Join(",", tokens);
     }
 

Fuchs/Services/ProcessWebComService.cs

@@ -14,7 +14,7 @@ namespace Fuchs.Services;
 
 /// <summary>
 /// Outbound communication service backed by the ProcessWeb Mailer API
-/// (POST https://api.processweb.de/api/mailer?fn=push_com).
+/// (POST https://api.processweb.de/mailer/push_com).
 /// When <c>ProcessWebComSettings.Enabled</c> is <c>false</c> the service
 /// only logs the intended communication without calling the API.
 /// </summary>
@@ -105,10 +105,9 @@ public class ProcessWebComService : IComService
                 })
                 .ToArray();
 
-            var payload = new
+            var communication = new
             {
-                comType     = "email",
-                recipient   = email,
+                to = email,
                 subject,
                 body,
                 attachments = attachmentPayload
@@ -117,7 +116,7 @@ public class ProcessWebComService : IComService
             _logger.LogDebug("SendEmailAsync ref={Reference} to={Email} attachments={Count}",
                 reference, email, attachmentPayload.Length);
 
-            var (ok, responseBody) = await PostToApiAsync("push_com", payload);
+            var (ok, responseBody) = await PostToApiAsync(reference, "e", communication);
             if (ok)
             {
                 success   = true;
@@ -166,14 +165,13 @@ public class ProcessWebComService : IComService
 
         try
         {
-            var payload = new
+            var communication = new
             {
-                comType   = "sms",
-                recipient = mobile,
-                body      = message
+                to   = mobile,
+                body = message
             };
 
-            var (ok, responseBody) = await PostToApiAsync("push_com", payload);
+            var (ok, responseBody) = await PostToApiAsync(mobile, "s", communication);
             if (ok)
             {
                 FuchsTelemetry.SmsSent.Add(1);
@@ -193,10 +191,20 @@ public class ProcessWebComService : IComService
 
     // ── Private helpers ────────────────────────────────────────────────────────
 
-    private async Task<(bool ok, string body)> PostToApiAsync(string fn, object payload)
+    private async Task<(bool ok, string body)> PostToApiAsync(string reference, string comtype, object communication)
     {
         var client = _httpClientFactory.CreateClient("ProcessWebMailer");
-        var json   = JsonConvert.SerializeObject(payload);
+
+        // The Mailer API expects a fixed envelope: { serverid, comtype, communication, reference }.
+        // "communication" carries the actual channel-specific payload (to/subject/body/attachments).
+        var payload = new
+        {
+            serverid = _settings.ServerId,
+            comtype,
+            communication,
+            reference
+        };
+        var json    = JsonConvert.SerializeObject(payload);
         var content = new StringContent(json, Encoding.UTF8, "application/json");
 
         string credentials = Convert.ToBase64String(
@@ -204,7 +212,7 @@ public class ProcessWebComService : IComService
         client.DefaultRequestHeaders.Authorization =
             new AuthenticationHeaderValue("Basic", credentials);
 
-        var response = await client.PostAsync($"{_settings.BaseUrl}/api/mailer?fn={fn}", content);
+        var response = await client.PostAsync($"{_settings.BaseUrl}/mailer/push_com", content);
         string responseBody = await response.Content.ReadAsStringAsync();
         return (response.IsSuccessStatusCode, responseBody);
     }

Fuchs/Services/ProcessWebComSettings.cs

@@ -14,6 +14,9 @@ public class ProcessWebComSettings
     /// <summary>API token used for HTTP Basic authentication.</summary>
     public string Token { get; set; } = "";
 
+    /// <summary>Server identifier assigned by ProcessWeb, sent as "serverid" in every push_com call.</summary>
+    public string ServerId { get; set; } = "";
+
     /// <summary>
     /// When <c>false</c> (default) the service is disabled and only logs the
     /// intended communication without actually calling the API.

Fuchs/Services/ReminderDraftEditService.cs

@@ -1,4 +1,4 @@
-using System.Globalization;
+using System.Globalization;
 using Fuchs.intranet;
 using Microsoft.Extensions.Logging;
 using MigraDoc.DocumentObjectModel;
@@ -159,10 +159,24 @@ public sealed class ReminderDraftEditService : IReminderDraftService
                 amount_open  = session.Sums.AmountOpen
             },
             validation = session.ValidationMessages.Select(v => new { field = v.Field, severity = v.Severity, message = v.Message }),
-            historyCount = session.History.Count
+            historyCount = session.History.Count,
+            notes = BuildNotes(session)
         };
     }
 
+    /// <summary>
+    /// Renders the backend-authoritative intro/closing notice paragraphs (see
+    /// <see cref="FuchsPdf.BuildReminderNotes"/>) for the editor's read-only preview — the same
+    /// text the PDF will show, generated from the same builder, so the two can never drift apart.
+    /// </summary>
+    private object BuildNotes(ReminderDraftSession session)
+    {
+        var fds = BuildReminderData(session);
+        fds.ReminderRegistration = SynthesizeRegistration(session);
+        var (intro, closing) = FuchsPdf.BuildReminderNotes(new FuchsPdf.FdsTextBlocks(), fds);
+        return new { intro, closing };
+    }
+
     public IReadOnlyList<ChangeHistoryEntry> GetHistory(string token) =>
         _cache.Get(token)?.History ?? (IReadOnlyList<ChangeHistoryEntry>)Array.Empty<ChangeHistoryEntry>();
 
@@ -250,6 +264,8 @@ public sealed class ReminderDraftEditService : IReminderDraftService
             ["SendToAddress"] = Str(session.New["invoiceaddress"]),
             ["SendToEmail"]   = Str(session.New["invoiceemail"]),
             ["InvoiceId"]     = invoiceId,
+            ["amount"]        = session.Sums.AmountTotal,
+            ["amount_payed"]  = session.Sums.AmountPayed,
             ["amount_open"]   = session.Sums.AmountOpen,
             ["PaymentTerm"]   = Str(session.Rem["paymentterm"]),
             ["invoices"]      = invoices,