feat(04-01): add formTemplates table and extend documents schema

- Add formTemplates table (id text PK, name, filename unique, createdAt, updatedAt)
- Add formTemplateId (nullable FK) and filePath (nullable text) to documents table
- Generate and apply migration 0002_wealthy_zzzax.sql
- Create seeds/forms/.gitkeep to track seed directory in git

teressa-copeland-homes/src/lib/db/schema.ts

@@ -22,6 +22,14 @@ export const clients = pgTable("clients", {
   updatedAt: timestamp("updated_at").defaultNow().notNull(),
 });
 
+export const formTemplates = pgTable("form_templates", {
+  id: text("id").primaryKey().$defaultFn(() => crypto.randomUUID()),
+  name: text("name").notNull(),
+  filename: text("filename").notNull().unique(),
+  createdAt: timestamp("created_at").defaultNow().notNull(),
+  updatedAt: timestamp("updated_at").defaultNow().notNull(),
+});
+
 export const documents = pgTable("documents", {
   id: text("id").primaryKey().$defaultFn(() => crypto.randomUUID()),
   name: text("name").notNull(),
@@ -31,4 +39,6 @@ export const documents = pgTable("documents", {
   status: documentStatusEnum("status").notNull().default("Draft"),
   sentAt: timestamp("sent_at"),
   createdAt: timestamp("created_at").defaultNow().notNull(),
+  formTemplateId: text("form_template_id").references(() => formTemplates.id),
+  filePath: text("file_path"),
 });