Refactor admin procedures into separate files

Extract admin procedures from router.ts into dedicated files under
procedures/admin/ with consolidated exports via _routes.ts. Adds shared
helper functions for response transformation and includes race condition
fixes via transaction-scoped existence checks.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api-server/src/procedures/admin/orgs/update.ts

@@ -0,0 +1,50 @@
+/**
+ * admin.orgs.update - Update organization
+ */
+
+import { ORPCError } from "@orpc/server";
+import { authMiddleware, os, superuserMiddleware } from "../../base.js";
+
+export const adminOrgsUpdate = os.admin.orgs.update
+  .use(authMiddleware)
+  .use(superuserMiddleware)
+  .handler(async ({ input, context }) => {
+    const { slug, displayName, logoUrl } = input;
+
+    // Check if there are actual updates to make
+    if (displayName === undefined && logoUrl === undefined) {
+      // Verify org exists even for no-op
+      const org = await context.db
+        .selectFrom("orgs")
+        .where("slug", "=", slug)
+        .select(["id"])
+        .executeTakeFirst();
+      if (!org) {
+        throw new ORPCError("NOT_FOUND", { message: "Organization not found" });
+      }
+      return;
+    }
+
+    const updates: Partial<{
+      display_name: string;
+      logo_url: string | null;
+      updated_at: Date;
+    }> = { updated_at: new Date() };
+
+    if (displayName !== undefined) {
+      updates.display_name = displayName;
+    }
+    if (logoUrl !== undefined) {
+      updates.logo_url = logoUrl || null;
+    }
+
+    const result = await context.db
+      .updateTable("orgs")
+      .set(updates)
+      .where("slug", "=", slug)
+      .executeTakeFirst();
+
+    if (!result.numUpdatedRows || result.numUpdatedRows === 0n) {
+      throw new ORPCError("NOT_FOUND", { message: "Organization not found" });
+    }
+  });