feat(plugins): externalize official provider batch

extensions/exa/README.md

@@ -0,0 +1,12 @@
+# OpenClaw Exa Plugin
+
+Official OpenClaw plugin for Exa.
+
+Install from OpenClaw:
+
+```bash
+openclaw plugins install @openclaw/exa-plugin
+openclaw gateway restart
+```
+
+See <https://docs.openclaw.ai/tools/exa-search> for setup and configuration.

extensions/exa/npm-shrinkwrap.json

@@ -0,0 +1,12 @@
+{
+  "name": "@openclaw/exa-plugin",
+  "version": "2026.6.8",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@openclaw/exa-plugin",
+      "version": "2026.6.8"
+    }
+  }
+}

extensions/exa/package.json

@@ -1,8 +1,11 @@
 {
   "name": "@openclaw/exa-plugin",
   "version": "2026.6.8",
-  "private": true,
-  "description": "OpenClaw Exa plugin",
+  "description": "OpenClaw Exa plugin.",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/openclaw/openclaw"
+  },
   "type": "module",
   "devDependencies": {
     "@openclaw/plugin-sdk": "workspace:*"
@@ -10,6 +13,23 @@
   "openclaw": {
     "extensions": [
       "./index.ts"
-    ]
+    ],
+    "install": {
+      "clawhubSpec": "clawhub:@openclaw/exa-plugin",
+      "npmSpec": "@openclaw/exa-plugin",
+      "defaultChoice": "npm",
+      "minHostVersion": ">=2026.6.8"
+    },
+    "compat": {
+      "pluginApi": ">=2026.6.8"
+    },
+    "build": {
+      "openclawVersion": "2026.6.8",
+      "bundledDist": false
+    },
+    "release": {
+      "publishToClawHub": true,
+      "publishToNpm": true
+    }
   }
 }