feat: add parameter_adjusts_variable junction table

Add migration and Hasura metadata for the adjustsVariable relationship
between Parameter and VariablePresentation entities.

Author: mosoriob

metadata/tables.yaml

@@ -3454,6 +3454,13 @@
         table:
           name: modelcatalog_parameter_intervention
           schema: public
+  - name: adjusts_variables
+    using:
+      foreign_key_constraint_on:
+        column: parameter_id
+        table:
+          name: modelcatalog_parameter_adjusts_variable
+          schema: public
   insert_permissions:
   - role: user
     permission:
@@ -5002,3 +5009,35 @@
   - role: user
     permission:
       filter: {}
+- table:
+    name: modelcatalog_parameter_adjusts_variable
+    schema: public
+  object_relationships:
+  - name: parameter
+    using:
+      foreign_key_constraint_on: parameter_id
+  - name: variable
+    using:
+      foreign_key_constraint_on: variable_id
+  insert_permissions:
+  - role: user
+    permission:
+      check: {}
+      columns: &id046
+      - parameter_id
+      - variable_id
+  select_permissions:
+  - role: anonymous
+    permission:
+      columns:
+      - parameter_id
+      - variable_id
+      filter: {}
+  - role: user
+    permission:
+      columns: *id046
+      filter: {}
+  delete_permissions:
+  - role: user
+    permission:
+      filter: {}

migrations/1771200009000_modelcatalog_parameter_adjusts_variable/down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS modelcatalog_parameter_adjusts_variable;

migrations/1771200009000_modelcatalog_parameter_adjusts_variable/up.sql

@@ -0,0 +1,6 @@
+-- Junction table: Parameter <-> VariablePresentation (adjustsVariable)
+CREATE TABLE modelcatalog_parameter_adjusts_variable (
+    parameter_id TEXT REFERENCES modelcatalog_parameter(id) ON DELETE CASCADE,
+    variable_id TEXT REFERENCES modelcatalog_variable_presentation(id) ON DELETE CASCADE,
+    PRIMARY KEY (parameter_id, variable_id)
+);