feat: add sidebar tabs (Options, AI, Schema) to Test page

Add a tabbed sidebar to the Test page for standard tasks, reusing the
ClientTabs pattern from the Query page.

- Options tab: existing sidebar content (machine, version, queue, etc.)
- AI tab: AI-powered payload generation with streaming, supports JSON
  Schema, inferred schema from recent runs, and task source code lookup
  via tool calling for tasks without schemas
- Schema tab: displays payload JSON Schema (from schemaTask), inferred
  schema (from recent runs via @jsonhero/schema-infer), or empty state
  with schemaTask docs and example code

Data layer changes:
- Surface payloadSchema and inferredPayloadSchema from TestTaskPresenter
- Add payloadSchema and fileId to WorkerDeploymentWithWorkerTasks type
- Decompress zlib-deflated source files for AI context

New resource route for AI payload generation with SSE streaming,
task source code tool calling, and prompt engineering to prevent
hallucinated payloads.

Author: ericallam

.server-changes/test-page-sidebar-tabs.md

@@ -0,0 +1,6 @@
+---
+area: webapp
+type: feature
+---
+
+Add sidebar tabs (Options, AI, Schema) to the Test page for schemaTask payload generation and schema viewing.

apps/webapp/app/presenters/v3/TestTaskPresenter.server.ts

@@ -6,6 +6,7 @@ import {
   type TaskRunTemplate,
   PrismaClientOrTransaction,
 } from "@trigger.dev/database";
+import { inferSchema } from "@jsonhero/schema-infer";
 import parse from "parse-duration";
 import { type PrismaClient } from "~/db.server";
 import { RunsRepository } from "~/services/runsRepository/runsRepository.server";
@@ -34,6 +35,8 @@ type Task = {
   taskIdentifier: string;
   filePath: string;
   friendlyId: string;
+  payloadSchema?: unknown;
+  inferredPayloadSchema?: unknown;
 };
 
 type Queue = {
@@ -244,11 +247,30 @@ export class TestTaskPresenter {
       },
     });
 
+    // Infer schema from existing run payloads when no explicit schema is defined
+    let inferredPayloadSchema: unknown | undefined;
+    if (!task.payloadSchema && latestRuns.length > 0 && task.triggerSource === "STANDARD") {
+      try {
+        let inference: ReturnType<typeof inferSchema> | undefined;
+        for (const run of latestRuns) {
+          const parsed = await parsePacket({ data: run.payload, dataType: run.payloadType });
+          inference = inferSchema(parsed, inference);
+        }
+        if (inference) {
+          inferredPayloadSchema = inference.toJSONSchema();
+        }
+      } catch {
+        // Ignore inference errors — it's best-effort
+      }
+    }
+
     const taskWithEnvironment = {
       id: task.id,
       taskIdentifier: task.slug,
       filePath: task.filePath,
       friendlyId: task.friendlyId,
+      payloadSchema: task.payloadSchema ?? undefined,
+      inferredPayloadSchema,
     };
 
     switch (task.triggerSource) {