refactor buyer and insured and add more policy types

priv/repo/migrations/20260310213733_create_car_policies.exs

@@ -7,11 +7,14 @@ defmodule PolicyService.Repo.Migrations.CreatePolicyApplications do
       add :application_id, :string, null: false
       add :org_id, :string, null: false
       add :submitted_by, :string, null: false
-      # "car" | "life" | "fire"
+      # "car" | "life" | "fire_structure" | "fire_contents"
       add :policy_type, :string, null: false
 
-      # Applicant — full map, shape varies by individual vs corporate
-      add :applicant_info, :map, default: %{}
+      # Insured — full map, shape varies by individual vs corporate
+      add :insured, :map, default: %{}
+
+      # Buyer — full map, shape varies by individual vs corporate
+      add :buyer, :map, default: %{}
 
       # Policy-type-specific details — shape varies by policy_type
       add :policy_details, :map, default: %{}
@@ -20,15 +23,15 @@ defmodule PolicyService.Repo.Migrations.CreatePolicyApplications do
       add :selected_providers, {:array, :string}, default: []
       add :quotes, :map, default: %{}
 
-       # Accepted plan
-       add :accepted_plan_id, :string
-       add :accepted_by, :string
+      # Accepted plan
+      add :accepted_plan_id, :string
+      add :accepted_by, :string
 
-       # Issued policy
-       add :provider_policy_number, :string
-       add :premium, :decimal
-       add :effective_date, :date
-       add :expiry_date, :date
+      # Issued policy
+      add :provider_policy_number, :string
+      add :premium, :decimal
+      add :effective_date, :date
+      add :expiry_date, :date
 
       # Status + timestamps
       add :status, :string, null: false