Add ledger, address/contact sort, and tighter schema-graph layout.

Replace manifestarticle.transactedamount with an append-only ledger, add sort on entity address/contact, and allow same-rank FKs with crossing-aware exits in the graph.

src/schema.js

@@ -178,6 +178,7 @@ BEGIN
         city NVARCHAR(255) NULL,
         county NVARCHAR(255) NULL,
         addresstype NVARCHAR(50) NOT NULL,
+        sort INT NOT NULL CONSTRAINT DF_entityaddress_sort DEFAULT 0,
         CONSTRAINT FK_entityaddress_entity FOREIGN KEY (entity_id) REFERENCES entity(id) ON DELETE CASCADE
     );
 END
@@ -191,6 +192,7 @@ BEGIN
         entity_id INT NOT NULL,
         contacttype NVARCHAR(50) NOT NULL,
         contact NVARCHAR(255) NOT NULL,
+        sort INT NOT NULL CONSTRAINT DF_entitycontact_sort DEFAULT 0,
         CONSTRAINT FK_entitycontact_entity FOREIGN KEY (entity_id) REFERENCES entity(id) ON DELETE CASCADE
     );
 END
@@ -520,7 +522,6 @@ BEGIN
         article_id INT NULL,
         amount FLOAT NOT NULL,
         net FLOAT NOT NULL,
-        transactedamount FLOAT NOT NULL,
         comment NVARCHAR(MAX) NULL,
         rebate FLOAT NOT NULL CONSTRAINT DF_manifestarticle_rebate DEFAULT 0,
         tax_id INT NOT NULL,
@@ -531,6 +532,21 @@ BEGIN
 END
 `;
 
+export const INIT_LEDGER = `
+IF NOT EXISTS (SELECT * FROM sys.tables WHERE name = 'ledger')
+BEGIN
+    CREATE TABLE ledger (
+        id INT IDENTITY(1,1) PRIMARY KEY,
+        manifestarticle_id INT NOT NULL,
+        transaction_type NVARCHAR(100) NOT NULL,
+        amount FLOAT NOT NULL,
+        transaction_text NVARCHAR(MAX) NOT NULL,
+        prev_hash NVARCHAR(128) NULL,
+        CONSTRAINT FK_ledger_manifestarticle FOREIGN KEY (manifestarticle_id) REFERENCES manifestarticle(id) ON DELETE NO ACTION
+    ) WITH (LEDGER = ON (APPEND_ONLY = ON));
+END
+`;
+
 export const INIT_NUMBERS = `
 IF NOT EXISTS (SELECT * FROM sys.tables WHERE name = 'numbers')
 BEGIN
@@ -688,6 +704,7 @@ export const SCHEMA_SCRIPTS = [
   INIT_PRICE,
   INIT_MANIFEST,
   INIT_MANIFESTARTICLE,
+  INIT_LEDGER,
   INIT_NUMBERS,
   INIT_GET_NEXT_NUMBER_WITH_PREFIX_AND_PADDING,
   INIT_COMPANYUSER,