Add identifier column to plugins table for cleaner plugin lookup

- Added 'identifier' column (unique) for machine-readable plugin ID
- 'name' now used for display name only
- Updated trial-execution to look up by identifier first, then name
- Added migration script for existing databases

scripts/migrate-add-identifier.ts

@@ -0,0 +1,31 @@
+import { db } from "~/server/db";
+import { sql } from "drizzle-orm";
+
+async function migrate() {
+  console.log("Adding identifier column to hs_plugin...");
+
+  try {
+    await db.execute(sql`ALTER TABLE hs_plugin ADD COLUMN identifier varchar(100)`);
+    console.log("✓ Added identifier column");
+  } catch (e: any) {
+    console.log("Column may already exist:", e.message);
+  }
+
+  try {
+    await db.execute(sql`UPDATE hs_plugin SET identifier = name WHERE identifier IS NULL`);
+    console.log("✓ Copied name to identifier");
+  } catch (e: any) {
+    console.log("Error copying:", e.message);
+  }
+
+  try {
+    await db.execute(sql`ALTER TABLE hs_plugin ADD CONSTRAINT hs_plugin_identifier_unique UNIQUE (identifier)`);
+    console.log("✓ Added unique constraint");
+  } catch (e: any) {
+    console.log("Constraint may already exist:", e.message);
+  }
+
+  console.log("Migration complete!");
+}
+
+migrate().catch(console.error);