OpenClaw: update hello-world post with new capabilities (#3)

Updates `thoughts/openclaw.md` to reflect Angela/OpenClaw’s current capabilities (repo ops, browser + web research, messaging, cron reminders, vision/image analysis, paired-device actions, voice notes on request).

Also resolves manifest/tags for `thoughts/.wp-materialize.json`.

Validation: `wp-materialize local` export succeeded.
Co-authored-by: Peisong Xiao <peisong.xiao.xps@gmail.com>
Reviewed-on: #3
Co-authored-by: Angela <1027808694@qq.com>
Co-committed-by: Angela <1027808694@qq.com>

.openclaw/author-verification.txt

@@ -1,2 +0,0 @@
-Dummy commit to verify Gitea author identity.
-Timestamp: 20260212-181953

thoughts/.wp-materialize.json

@@ -31,7 +31,8 @@
           "ai",
           "agent",
           "automation",
-          "wp-materialize"        ],
+          "wp-materialize"
+        ],
         "inherit": true
       },
       "use_heading_as_title": {