Integrate JailJS for CSP-restricted execution in browser extension

Major changes:
- Migrate browser-extension to use web-ui package (85% code reduction)
- Add JailJS content script with ES6+ transform support
- Expose DOM constructors (Event, KeyboardEvent, etc.) to JailJS
- Support top-level await by wrapping code in async IIFE
- Add returnFile() support in JailJS execution
- Refactor KeyStore into pluggable storage-adapter pattern
- Make ChatPanel configurable with sandboxUrlProvider and additionalTools
- Update jailjs to 0.1.1

Files deleted (33 duplicate files):
- All browser-extension components, dialogs, state, tools, utils
- Now using web-ui versions via @mariozechner/pi-web-ui

Files added:
- packages/browser-extension/src/content.ts (JailJS content script)
- packages/web-ui/src/state/storage-adapter.ts
- packages/web-ui/src/state/key-store.ts

Browser extension now has only 5 source files (down from 38).

package-lock.json

@@ -10,6 +10,9 @@
 			"workspaces": [
 				"packages/*"
 			],
+			"dependencies": {
+				"@mariozechner/jailjs": "^0.1.1"
+			},
 			"devDependencies": {
 				"@biomejs/biome": "^2.1.4",
 				"@types/node": "^22.10.5",
@@ -31,6 +34,61 @@
 				"anthropic-ai-sdk": "bin/cli"
 			}
 		},
+		"node_modules/@babel/helper-string-parser": {
+			"version": "7.27.1",
+			"resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.27.1.tgz",
+			"integrity": "sha512-qMlSxKbpRlAridDExk92nSobyDdpPijUq2DW6oDnUqd0iOGxmQjyqhMIihI9+zv4LPyZdRje2cavWPbCbWm3eA==",
+			"license": "MIT",
+			"engines": {
+				"node": ">=6.9.0"
+			}
+		},
+		"node_modules/@babel/helper-validator-identifier": {
+			"version": "7.27.1",
+			"resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.27.1.tgz",
+			"integrity": "sha512-D2hP9eA+Sqx1kBZgzxZh0y1trbuU+JoDkiEwqhQ36nodYqJwyEIhPSdMNd7lOm/4io72luTPWH20Yda0xOuUow==",
+			"license": "MIT",
+			"engines": {
+				"node": ">=6.9.0"
+			}
+		},
+		"node_modules/@babel/parser": {
+			"version": "7.28.4",
+			"resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.28.4.tgz",
+			"integrity": "sha512-yZbBqeM6TkpP9du/I2pUZnJsRMGGvOuIrhjzC1AwHwW+6he4mni6Bp/m8ijn0iOuZuPI2BfkCoSRunpyjnrQKg==",
+			"license": "MIT",
+			"dependencies": {
+				"@babel/types": "^7.28.4"
+			},
+			"bin": {
+				"parser": "bin/babel-parser.js"
+			},
+			"engines": {
+				"node": ">=6.0.0"
+			}
+		},
+		"node_modules/@babel/standalone": {
+			"version": "7.28.4",
+			"resolved": "https://registry.npmjs.org/@babel/standalone/-/standalone-7.28.4.tgz",
+			"integrity": "sha512-Qc1BNCfuJZBKs2SC5lqRmSYOw7Ka0X7urZQ7oVsGIax4eGDUIHX+CDg752N4jDxC2rbBh3li098ReGOtjT0x4g==",
+			"license": "MIT",
+			"engines": {
+				"node": ">=6.9.0"
+			}
+		},
+		"node_modules/@babel/types": {
+			"version": "7.28.4",
+			"resolved": "https://registry.npmjs.org/@babel/types/-/types-7.28.4.tgz",
+			"integrity": "sha512-bkFqkLhh3pMBUQQkpVgWDWq/lqzc2678eUyDlTBhRqhCHFguYYGM0Efga7tYk4TogG/3x0EEl66/OQ+WGbWB/Q==",
+			"license": "MIT",
+			"dependencies": {
+				"@babel/helper-string-parser": "^7.27.1",
+				"@babel/helper-validator-identifier": "^7.27.1"
+			},
+			"engines": {
+				"node": ">=6.9.0"
+			}
+		},
 		"node_modules/@biomejs/biome": {
 			"version": "2.2.5",
 			"resolved": "https://registry.npmjs.org/@biomejs/biome/-/biome-2.2.5.tgz",
@@ -735,6 +793,16 @@
 				"@lit-labs/ssr-dom-shim": "^1.4.0"
 			}
 		},
+		"node_modules/@mariozechner/jailjs": {
+			"version": "0.1.1",
+			"resolved": "https://registry.npmjs.org/@mariozechner/jailjs/-/jailjs-0.1.1.tgz",
+			"integrity": "sha512-vC4+ZDNJRkQVCnBPKKmawWS1BIEhV34O7qphm3nWZYvQb5ikSfgpZY2SzKkJrAo6LKmQe8Jo4fvggu7fPGMcZg==",
+			"dependencies": {
+				"@babel/parser": "^7.26.10",
+				"@babel/standalone": "^7.28.4",
+				"@babel/types": "^7.26.10"
+			}
+		},
 		"node_modules/@mariozechner/mini-lit": {
 			"version": "0.1.7",
 			"resolved": "https://registry.npmjs.org/@mariozechner/mini-lit/-/mini-lit-0.1.7.tgz",
@@ -5291,6 +5359,7 @@
 			"name": "@mariozechner/pi-reader-extension",
 			"version": "0.5.43",
 			"dependencies": {
+				"@mariozechner/jailjs": "^0.1.0",
 				"@mariozechner/mini-lit": "^0.1.7",
 				"@mariozechner/pi-ai": "^0.5.43",
 				"@mariozechner/pi-web-ui": "^0.5.43",