fix(qr): replace qrcode-terminal with qrcode-tui

Replace legacy qrcode-terminal usage with shared qrcode-tui media helpers, bound QR PNG rendering options, and raise bundled plugin host floors for the new SDK runtime surface.

package.json

@@ -1553,6 +1553,7 @@
     "@mariozechner/pi-tui": "0.69.0",
     "@modelcontextprotocol/sdk": "1.29.0",
     "@mozilla/readability": "^0.6.0",
+    "@vincentkoc/qrcode-tui": "0.2.1",
     "ajv": "^8.18.0",
     "chalk": "^5.6.2",
     "chokidar": "^5.0.0",
@@ -1573,7 +1574,6 @@
     "osc-progress": "^0.3.0",
     "pdfjs-dist": "^5.6.205",
     "proxy-agent": "^8.0.1",
-    "qrcode-terminal": "^0.12.0",
     "semver": "7.7.4",
     "sharp": "^0.34.5",
     "sqlite-vec": "0.1.9",
@@ -1594,7 +1594,6 @@
     "@types/express": "^5.0.6",
     "@types/markdown-it": "^14.1.2",
     "@types/node": "25.6.0",
-    "@types/qrcode-terminal": "^0.12.2",
     "@types/ws": "^8.18.1",
     "@typescript/native-preview": "7.0.0-dev.20260423.1",
     "@vitest/coverage-v8": "^4.1.4",