Rewrite README with classification docs, logo, and status icons

Updated documentation to reflect the 4-tier classification system
and uninstalled detection. Added SVG logo and color-coded status
indicator dots. Added architecture diagram and collapsible API
response example.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/logo.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="120" height="120" viewBox="0 0 120 120">
+  <defs>
+    <linearGradient id="bg" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#1a1a2e"/>
+      <stop offset="100%" stop-color="#16213e"/>
+    </linearGradient>
+    <linearGradient id="bar1" x1="0" y1="1" x2="0" y2="0">
+      <stop offset="0%" stop-color="#4a9"/>
+      <stop offset="100%" stop-color="#4c6"/>
+    </linearGradient>
+    <linearGradient id="bar2" x1="0" y1="1" x2="0" y2="0">
+      <stop offset="0%" stop-color="#e90"/>
+      <stop offset="100%" stop-color="#ec0"/>
+    </linearGradient>
+    <linearGradient id="bar3" x1="0" y1="1" x2="0" y2="0">
+      <stop offset="0%" stop-color="#e44"/>
+      <stop offset="100%" stop-color="#f66"/>
+    </linearGradient>
+  </defs>
+  <rect width="120" height="120" rx="24" fill="url(#bg)"/>
+  <!-- Bars -->
+  <rect x="20" y="62" width="18" height="36" rx="4" fill="url(#bar1)" opacity="0.9"/>
+  <rect x="51" y="42" width="18" height="56" rx="4" fill="url(#bar2)" opacity="0.9"/>
+  <rect x="82" y="22" width="18" height="76" rx="4" fill="url(#bar3)" opacity="0.9"/>
+  <!-- Node dots -->
+  <circle cx="29" cy="50" r="5" fill="#fff" opacity="0.9"/>
+  <circle cx="60" cy="32" r="5" fill="#fff" opacity="0.9"/>
+  <circle cx="91" cy="16" r="4" fill="#fff" opacity="0.7"/>
+  <!-- Connecting lines -->
+  <line x1="34" y1="48" x2="55" y2="34" stroke="#fff" stroke-width="2" opacity="0.4"/>
+  <line x1="65" y1="30" x2="87" y2="18" stroke="#fff" stroke-width="2" opacity="0.3"/>
+</svg>

docs/status_consider.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 18 18">
+  <circle cx="9" cy="9" r="7" fill="#e90" opacity="0.2"/>
+  <circle cx="9" cy="9" r="5" fill="#e90"/>
+</svg>

docs/status_safe.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 18 18">
+  <circle cx="9" cy="9" r="7" fill="#e44" opacity="0.2"/>
+  <circle cx="9" cy="9" r="5" fill="#e44"/>
+</svg>

docs/status_uninstalled.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 18 18">
+  <circle cx="9" cy="9" r="7" fill="#555" opacity="0.2"/>
+  <circle cx="9" cy="9" r="5" fill="#555"/>
+</svg>

docs/status_unused_new.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 18 18">
+  <circle cx="9" cy="9" r="7" fill="#68f" opacity="0.2"/>
+  <circle cx="9" cy="9" r="5" fill="#68f"/>
+</svg>

docs/status_used.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 18 18">
+  <circle cx="9" cy="9" r="7" fill="#4a4" opacity="0.2"/>
+  <circle cx="9" cy="9" r="5" fill="#4a4"/>
+</svg>