Fix custom parser OpenAPI types and add structured default response schema

Agent-Logs-Url: https://github.com/fosrl/pangolin/sessions/73990123-9c27-444b-bc6e-77e890a0d57c

Co-authored-by: oschwartz10612 <4999704+oschwartz10612@users.noreply.github.com>

server/routers/site/deleteSite.ts

@@ -16,7 +16,7 @@ import { usageService } from "@server/lib/billing/usageService";
 import { FeatureId } from "@server/lib/billing";
 
 const deleteSiteSchema = z.strictObject({
-    siteId: z.string().transform(Number).pipe(z.int().positive())
+    siteId: z.coerce.number().int().positive()
 });
 
 registry.registerPath({

server/routers/site/listSiteRoles.ts

@@ -10,7 +10,7 @@ import logger from "@server/logger";
 import { fromError } from "zod-validation-error";
 
 const listSiteRolesSchema = z.strictObject({
-    siteId: z.string().transform(Number).pipe(z.int().positive())
+    siteId: z.coerce.number().int().positive()
 });
 
 export async function listSiteRoles(

server/routers/site/socketIntegration.ts

@@ -44,7 +44,7 @@ export interface Container {
 }
 
 const siteIdParamsSchema = z.strictObject({
-    siteId: z.string().transform(stoi).pipe(z.int().positive())
+    siteId: z.coerce.number().int().positive()
 });
 
 const DockerStatusSchema = z.strictObject({

server/routers/site/updateSite.ts

@@ -12,7 +12,7 @@ import { OpenAPITags, registry } from "@server/openApi";
 import { isValidCIDR } from "@server/lib/validators";
 
 const updateSiteParamsSchema = z.strictObject({
-    siteId: z.string().transform(Number).pipe(z.int().positive())
+    siteId: z.coerce.number().int().positive()
 });
 
 const updateSiteBodySchema = z