qunatity ledger in table definition

common/proto/table_definition.proto

@@ -197,7 +197,9 @@ message ColumnDefinition {
   // MONEY rounding applied before a value is stored.
   MoneyRounding rounding = 4;
 
-  reserved 5;
+  // When true, this numeric column is server-owned and projected from the
+  // profile quantity ledger.
+  bool quantity_ledger = 5;
 }
 
 // Response after table creation (success + DDL preview).

common/proto/table_structure.proto

@@ -73,9 +73,8 @@ message TableColumn {
   // Typically true for the "id" column created by the system.
   bool is_primary_key = 4;
 
-  // True for a user-defined column whose logic should be recomputed whenever
-  // one of its dependencies changes. False for system and foreign-key columns.
-  reserved 5;
+  // True when this column is projected from the profile quantity ledger.
+  bool quantity_ledger = 5;
 
   // True when the server created this as a companion of another logical column.
   bool generated = 6;

common/src/proto/komp_ac.table_definition.rs

@@ -166,6 +166,10 @@ pub struct ColumnDefinition {
     /// MONEY rounding applied before a value is stored.
     #[prost(enumeration = "MoneyRounding", tag = "4")]
     pub rounding: i32,
+    /// When true, this numeric column is server-owned and projected from the
+    /// profile quantity ledger.
+    #[prost(bool, tag = "5")]
+    pub quantity_ledger: bool,
 }
 /// Response after table creation (success + DDL preview).
 #[derive(serde::Serialize, serde::Deserialize)]

common/src/proto/komp_ac.table_structure.rs

@@ -55,6 +55,9 @@ pub struct TableColumn {
     /// Typically true for the "id" column created by the system.
     #[prost(bool, tag = "4")]
     pub is_primary_key: bool,
+    /// True when this column is projected from the profile quantity ledger.
+    #[prost(bool, tag = "5")]
+    pub quantity_ledger: bool,
     /// True when the server created this as a companion of another logical column.
     #[prost(bool, tag = "6")]
     pub generated: bool,