Ship the Diffbot icon as assets/icon.png

OpenClaw reads a plugin's catalog icon from assets/icon.png in the
plugin root, and the ClawHub validator rejects a top-level icon manifest
field, so the favicon is rendered to a 512px PNG and shipped instead.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017pDV6KygzuhYtd3Q6Jy3Q7

Author: jeromechoo

README.md

@@ -123,6 +123,7 @@ src/
   dql-builder.ts    pure DQL string helpers
   tools/            one module per tool
 skills/             ten SKILL.md files loaded via the manifest's "skills" field
+assets/icon.png     catalog icon (rendered from diffbot.com's favicon.svg)
 openclaw.plugin.json
 ```
 

assets/icon.png

@@ -3,7 +3,6 @@
   "name": "Diffbot",
   "description": "Structured web knowledge for OpenClaw agents: query Diffbot's Knowledge Graph (organizations, people, news, places, deals, and any other entity type via DQL), search the web with ranked and cited results, extract any URL into markdown or JSON, resolve named entities in text, and crawl whole sites.",
   "version": "0.1.0",
-  "icon": "https://www.diffbot.com/favicon.svg",
   "skills": [
     "./skills"
   ],

openclaw.plugin.json

@@ -42,6 +42,7 @@
   },
   "files": [
     "dist",
+    "assets",
     "skills",
     "openclaw.plugin.json",
     "README.md",