feat(config-refs): introduce config reference parsing and resolution

- Added a new module for parsing and resolving configuration references, supporting `$SECRET_`, `$KV_`, and `$CONTEXT_` prefixes.
- Implemented functions to handle the resolution of these references within workflow contexts, enhancing the flexibility of configuration management.
- Updated existing workflows and scripts to utilize the new config reference resolution, improving data handling and context management.
- Introduced a smoke test to validate the functionality of the config reference system, ensuring robustness and reliability.

This update significantly enhances the ability to manage dynamic configurations within workflows, improving overall usability and maintainability.

packages/web/src/components/workflow/WorkflowVisualEditor.jsx

@@ -1,6 +1,7 @@
 import { useMemo, useState } from "react";
 import { parse as parseYaml } from "yaml";
 import { useHttpAuths, useHttpPages, useScripts, useWorkflows } from "../../api/hooks.js";
+import { dataFromInputMeta, firstInputMeta } from "../../lib/script.js";
 import { workflowToFlowchart } from "../../lib/workflow-mermaid.js";
 import { parseWorkflowYaml, stringifyWorkflowDoc } from "../../lib/workflow-doc.js";
 import { ScriptsTab } from "./ScriptsTab.jsx";
@@ -80,7 +81,27 @@ export function WorkflowVisualEditor({
     setTab(next);
   }
 
-  const defaultData = displayDoc?.extra?.data ?? {};
+  const scriptsByName = useMemo(() => {
+    const map = new Map();
+    for (const s of scripts) {
+      const name = typeof s === "string" ? s : s.name;
+      if (name) map.set(name, s);
+    }
+    return map;
+  }, [scripts]);
+
+  const inputMeta = useMemo(
+    () => firstInputMeta(displayDoc?.scripts, scriptsByName),
+    [displayDoc?.scripts, scriptsByName],
+  );
+
+  const defaultData = useMemo(() => {
+    const yamlData = displayDoc?.extra?.data;
+    return dataFromInputMeta(inputMeta, yamlData);
+  }, [displayDoc?.extra?.data, inputMeta]);
+
+  const inputFields = inputMeta?.input;
+
   let testDisabledReason = null;
   if (visualDisabled) testDisabledReason = "Fix YAML before running.";
   else if (unsaved) testDisabledReason = "Save the workflow before running. Test uses the saved YAML.";
@@ -181,9 +202,11 @@ export function WorkflowVisualEditor({
 
       {showTest && owner && file ? (
         <WorkflowTestPanel
+          key={`${owner}/${file}`}
           owner={owner}
           file={file}
           defaultData={defaultData}
+          inputFields={inputFields}
           disabled={Boolean(testDisabledReason)}
           disabledReason={testDisabledReason}
           open={testOpen}