docs: add social metadata to project page

Author: mockingbird777

docs/index.html

@@ -4,6 +4,12 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width,initial-scale=1">
   <meta name="description" content="Task2Tool is a local-first CLI for finding the smallest useful set of AI agent resources.">
+  <meta property="og:type" content="website">
+  <meta property="og:title" content="Task2Tool — capability discovery without context sprawl">
+  <meta property="og:description" content="Task2Tool is a local-first CLI for finding the smallest useful set of AI agent resources.">
+  <meta name="twitter:card" content="summary">
+  <meta name="twitter:title" content="Task2Tool — capability discovery without context sprawl">
+  <meta name="twitter:description" content="Task2Tool is a local-first CLI for finding the smallest useful set of AI agent resources.">
   <meta name="color-scheme" content="dark">
   <title>Task2Tool — capability discovery without context sprawl</title>
   <style>