feat(phase725): IPC handlers for dedicated bot registry and webhook JSON modals

Wire bot-registry-json-modal-open, clear-bot-registry-export-json, and
webhook-execute-export-json modal lifecycle handlers for Phase 725 UI.

Co-authored-by: Cursor <[email protected]>

index.js

@@ -2576,6 +2576,27 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
     }
     return true
   }
+
+  if (t === 'bot-registry-json-modal-open') {
+    const out = await platform.onBotRegistryJsonModalOpen?.() || { ok: true }
+    send({ type: 'bot-registry-json-modal-opened', ...out })
+    return
+  }
+  if (t === 'clear-bot-registry-export-json') {
+    const out = await platform.clearBotRegistryJsonExports?.()
+    send({ type: 'bot-registry-export-json-cleared', ...out })
+    return
+  }
+  if (t === 'webhook-execute-export-json-modal-open') {
+    const out = await platform.onWebhookExecuteExportJsonModalOpen?.() || { ok: true }
+    send({ type: 'webhook-execute-export-json-modal-opened', ...out })
+    return
+  }
+  if (t === 'clear-webhook-execute-export-json') {
+    const out = await platform.clearWebhookExecuteExportJsonExports?.()
+    send({ type: 'webhook-execute-export-json-cleared', ...out })
+    return
+  }
   if (t === 'bot-json-modal-open') {
     pushState()
     send({ type: 'bot-json-modal-opened' })