feat: separate AGPL libraries and add dynamic WASM loading

- Add WASM settings page for configuring external AGPL modules
- Implement dynamic loading for PyMuPDF, Ghostscript, and CoherentPDF
- Add Cloudflare Worker proxy for serving WASM files with CORS
- Update all affected tool pages to check WASM availability
- Add showWasmRequiredDialog for missing module configuration

Documentation:
- Update README, licensing.html, and docs to clarify AGPL components
  are not bundled and must be configured separately
- Add WASM-PROXY.md deployment guide with recommended source URLs
- Rename "CPDF" to "CoherentPDF" for consistency

package-lock.json

@@ -9,8 +9,6 @@
       "version": "1.16.1",
       "license": "AGPL-3.0-only",
       "dependencies": {
-        "@bentopdf/gs-wasm": "^0.1.0",
-        "@bentopdf/pymupdf-wasm": "^0.11.12",
         "@fontsource/cedarville-cursive": "^5.2.7",
         "@fontsource/dancing-script": "^5.2.8",
         "@fontsource/dm-sans": "^5.2.8",
@@ -505,24 +503,6 @@
         "node": ">=18"
       }
     },
-    "node_modules/@bentopdf/gs-wasm": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/@bentopdf/gs-wasm/-/gs-wasm-0.1.0.tgz",
-      "integrity": "sha512-C71zxZW4R7Oa6fdya5leTh2VOZOxqH8IQlveh13OeuwZ2ulrovSi9629xTzAiIeeVKvDZma1Klxy4MuK65xe9w==",
-      "license": "AGPL-3.0",
-      "dependencies": {
-        "@types/emscripten": "^1.39.10"
-      }
-    },
-    "node_modules/@bentopdf/pymupdf-wasm": {
-      "version": "0.11.12",
-      "resolved": "https://registry.npmjs.org/@bentopdf/pymupdf-wasm/-/pymupdf-wasm-0.11.12.tgz",
-      "integrity": "sha512-AcSg7v7pVhYcH23qLDEj3yTABlGIkZULPmrvWHRtEyD5QMS0TWOLUq/c0ATO371PKVlI4jEUpCBUj+iBsFJwVQ==",
-      "license": "AGPL-3.0",
-      "peerDependencies": {
-        "@bentopdf/gs-wasm": "*"
-      }
-    },
     "node_modules/@braintree/sanitize-url": {
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/@braintree/sanitize-url/-/sanitize-url-7.1.1.tgz",
@@ -3529,12 +3509,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@types/emscripten": {
-      "version": "1.41.5",
-      "resolved": "https://registry.npmjs.org/@types/emscripten/-/emscripten-1.41.5.tgz",
-      "integrity": "sha512-cMQm7pxu6BxtHyqJ7mQZ2kXWV5SLmugybFdHCBbJ5eHzOo6VhBckEgAT3//rP5FwPHNPeEiq4SmQ5ucBwsOo4Q==",
-      "license": "MIT"
-    },
     "node_modules/@types/estree": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz",