v8: agent logos on idle, transparent backgrounds, fix PI settings persistence

com.streamdock.codex.monitor.sdPlugin/static/img/claude-icon.svg

@@ -0,0 +1,4 @@
+<svg width="144" height="144" xmlns="http://www.w3.org/2000/svg">
+  <circle cx="72" cy="72" r="40" fill="none" stroke="#d97706" stroke-width="4"/>
+  <text x="72" y="82" text-anchor="middle" fill="#d97706" font-family="serif" font-size="48" font-weight="bold">C</text>
+</svg>

com.streamdock.codex.monitor.sdPlugin/static/img/codex-icon.svg

@@ -1 +1,4 @@
-<svg width="144" height="144" xmlns="http://www.w3.org/2000/svg"><rect width="144" height="144" rx="20" fill="#1a1a2e"/><polygon points="72,24 112,60 112,108 72,144 32,108 32,60" fill="none" stroke="#f59e0b" stroke-width="3"/><text x="72" y="84" text-anchor="middle" fill="#f59e0b" font-family="Arial,sans-serif" font-size="28" font-weight="bold">CX</text></svg>
+<svg width="144" height="144" xmlns="http://www.w3.org/2000/svg">
+  <polygon points="72,30 108,60 108,105 72,135 36,105 36,60" fill="none" stroke="#f59e0b" stroke-width="4"/>
+  <text x="72" y="88" text-anchor="middle" fill="#f59e0b" font-family="Arial,sans-serif" font-size="30" font-weight="bold">CX</text>
+</svg>

com.streamdock.codex.monitor.sdPlugin/static/img/opencode-icon.svg

@@ -0,0 +1,5 @@
+<svg width="144" height="144" xmlns="http://www.w3.org/2000/svg">
+  <rect x="32" y="32" width="80" height="80" rx="12" fill="none" stroke="#06b6d4" stroke-width="4"/>
+  <line x1="52" y1="52" x2="52" y2="92" stroke="#06b6d4" stroke-width="3" stroke-linecap="round"/>
+  <line x1="52" y1="52" x2="92" y2="52" stroke="#06b6d4" stroke-width="3" stroke-linecap="round"/>
+</svg>