feat(webapp): Add test payload AI generation to the test page based on payload schemas (#3188)

<img width="2191" height="1023" alt="CleanShot 2026-03-06 at 13 36 53"
src="https://github.com/user-attachments/assets/4eba0d1a-1528-49a3-be5b-6bde89030193"
/>
<img width="411" height="1069" alt="CleanShot 2026-03-06 at 13 37 28"
src="https://github.com/user-attachments/assets/e5f7bb9c-c894-41cc-9ca6-96b43fcf6005"
/>

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

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") {
+      let inference: ReturnType<typeof inferSchema> | undefined;
+      for (const run of latestRuns) {
+        try {
+          const parsed = await parsePacket({ data: run.payload, dataType: run.payloadType });
+          inference = inferSchema(parsed, inference);
+        } catch {
+          // Skip malformed runs — inference is best-effort
+        }
+      }
+      if (inference) {
+        inferredPayloadSchema = inference.toJSONSchema();
+      }
+    }
+
     const taskWithEnvironment = {
       id: task.id,
       taskIdentifier: task.slug,
       filePath: task.filePath,
       friendlyId: task.friendlyId,
+      payloadSchema: task.payloadSchema ?? undefined,
+      inferredPayloadSchema,
     };
 
     switch (task.triggerSource) {