Merge upstream v0.4.0 into Gitea fork

package.json

@@ -27,10 +27,12 @@
 	"dependencies": {
 		"@earendil-works/pi-agent-core": "1.4.0",
 		"@earendil-works/pi-ai": "1.4.0",
+		"@modelcontextprotocol/sdk": "1.32.1",
 		"@mozilla/readability": "^0.6.0",
 		"@radix-ui/react-use-controllable-state": "^1.2.6",
 		"@resvg/resvg-js": "^2.6.2",
 		"@rive-app/react-webgl2": "^4.32.1",
+		"@silvia-odwyer/photon-node": "0.3.4",
 		"@streamdown/cjk": "^1.0.3",
 		"@streamdown/code": "^1.1.1",
 		"@streamdown/math": "^1.0.2",
@@ -51,11 +53,14 @@
 		"katex": "0.18.2",
 		"linkedom": "^0.18.13",
 		"lucide-react": "^1.33.0",
+		"mdast-util-from-markdown": "2.0.3",
+		"mdast-util-math": "3.0.0",
 		"media-chrome": "^4.19.2",
+		"micromark-extension-math": "3.1.0",
 		"mermaid": "^11.17.0",
 		"motion": "^13.1.1",
 		"nanoid": "^6.0.1",
-		"next": "^16.3.2",
+		"next": "^16.4.3",
 		"next-themes": "^0.4.6",
 		"pdfjs-dist": "^6.3.289",
 		"puppeteer-core": "^25.8.0",
@@ -76,7 +81,7 @@
 		"katex": "$katex"
 	},
 	"devDependencies": {
-		"@next/eslint-plugin-next": "^16.3.3",
+		"@next/eslint-plugin-next": "^16.4.3",
 		"@tailwindcss/postcss": "^4.3.3",
 		"@types/node": "^24.0.0",
 		"@types/react": "^19.2.18",
@@ -84,7 +89,7 @@
 		"@types/turndown": "^5.0.6",
 		"@typescript-eslint/parser": "^8.68.0",
 		"concurrently": "^10.0.5",
-		"electron": "^44.4.1",
+		"electron": "^44.9.3",
 		"electron-builder": "26.16.1",
 		"eslint": "^9.39.5",
 		"eslint-import-resolver-typescript": "^4.4.5",