fix(tool-input): regenerate icon mapping and guard an empty MCP enum

- `docs:check` failed: adding `human_in_the_loop_v2` (and hiding v1) left the
  generated icon maps stale. Regenerated; the diff is only those entries.
- `enumMemberShape` read an empty enum as numeric, because `every` is vacuously
  true on `[]`. A third-party MCP schema can send one.
- The MCP dropdown's highlight label used a truthiness check, so a falsy member
  (`0`, `false`) rendered blank now that the value is decoded rather than kept
  as a string.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: icecrasher321

apps/docs/components/ui/icon-mapping.ts

@@ -117,6 +117,7 @@ import {
   HexIcon,
   HubspotIcon,
   HuggingFaceIcon,
+  HumanInTheLoopIcon,
   HunterIOIcon,
   IAMIcon,
   IcypeasIcon,
@@ -405,6 +406,8 @@ export const blockTypeToIconMap: Record<string, IconComponent> = {
   hex: HexIcon,
   hubspot: HubspotIcon,
   huggingface: HuggingFaceIcon,
+  human_in_the_loop: HumanInTheLoopIcon,
+  human_in_the_loop_v2: HumanInTheLoopIcon,
   hunter: HunterIOIcon,
   iam: IAMIcon,
   icypeas: IcypeasIcon,

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/mcp-dynamic-args/mcp-dynamic-args.tsx

@@ -269,9 +269,11 @@ export function McpDynamicArgs({
           value: String(option),
         }))
         // Options are stringified members, so a decoded numeric/boolean enum value has to
-        // be stringified back to match one.
+        // be stringified back to match one. Label and value are the same string here, so
+        // the highlight overlay reads the same expression — a falsy member (`0`, `false`)
+        // is a real selection, not an empty one.
         const dropdownValue = value === undefined || value === null ? '' : String(value)
-        const selectedLabel = value ? String(value) : ''
+        const selectedLabel = dropdownValue
         const workflowSearchHighlight = getWorkflowSearchLabelHighlight({
           activeSearchTarget,
           blockId,

apps/sim/lib/integrations/icon-mapping.ts

@@ -116,6 +116,7 @@ import {
   HexIcon,
   HubspotIcon,
   HuggingFaceIcon,
+  HumanInTheLoopIcon,
   HunterIOIcon,
   IAMIcon,
   IcypeasIcon,
@@ -394,6 +395,7 @@ export const blockTypeToIconMap: Record<string, IconComponent> = {
   hex: HexIcon,
   hubspot: HubspotIcon,
   huggingface: HuggingFaceIcon,
+  human_in_the_loop_v2: HumanInTheLoopIcon,
   hunter: HunterIOIcon,
   iam: IAMIcon,
   icypeas: IcypeasIcon,

apps/sim/tools/param-shape.test.ts

@@ -537,6 +537,8 @@ describe('buildJsonSchemaParamShapes', () => {
         strs: { enum: ['x', 'y'] },
         structured: { enum: [{ a: 1 }] },
         mixed: { enum: [1, 'x'] },
+        // `every` is vacuously true on an empty enum — this must not read as numeric.
+        empty: { enum: [] },
       },
     })
 
@@ -545,6 +547,7 @@ describe('buildJsonSchemaParamShapes', () => {
     expect(shapes.get('strs')).toBe('string')
     expect(shapes.get('structured')).toBe('json')
     expect(shapes.get('mixed')).toBe('string')
+    expect(shapes.get('empty')).toBe('string')
   })
 
   it('round-trips a numeric enum through the dropdown it renders as', () => {

apps/sim/tools/param-shape.ts

@@ -426,6 +426,8 @@ export function getJsonSchemaValueShape(property: JsonSchemaProperty): ToolParam
 
 /** The shape an enum's members share, for a property that declares no type. */
 function enumMemberShape(members: readonly unknown[]): ToolParamValueShape {
+  // `every` is vacuously true on an empty enum, which a third-party MCP schema may send.
+  if (members.length === 0) return 'string'
   if (members.some((member) => member !== null && typeof member === 'object')) return 'json'
   if (members.every((member) => typeof member === 'number')) return 'number'
   if (members.every((member) => typeof member === 'boolean')) return 'boolean'