diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3c3b54fb..352708ae 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -25,6 +25,7 @@ jobs:
               with:
                   node-version: ${{ matrix.node-version }}
             - run: npm ci
+            - run: node packages/react-native/scripts/generate-agent-version.cjs --check
             - run: npm run build
             - run: npm run lint
             - run: npm run format:check
diff --git a/package-lock.json b/package-lock.json
index 2791087e..993cb2c3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -65,7 +65,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.29.7.tgz",
             "integrity": "sha512-Aup7aUOfpbAUg2ROOJN6Iw5f9DMBlzu0mIkm/malLQFN/YQgO48wCj0Kxa3sEHJvPVFg7siR+qRInwXd2qhQKw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/helper-validator-identifier": "^7.29.7",
@@ -80,7 +80,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.29.7.tgz",
             "integrity": "sha512-locTkQyKvwIEgBzVrn8693ebc97F2U8ZHjbXwDXJ5Fn2TCpNwTlKcaKLkdHop5c/icOFE7qt7Q9JC5hnKNa6Gg==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">=6.9.0"
@@ -90,7 +90,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.29.7.tgz",
             "integrity": "sha512-RgHBCvtjbOK2gXSNBNIkNoEc9qoVEtau3hj8gEqKQuL3HZAibKarWFEI3Lfm6EYKkLalOh8eSrj9b+ch9H/VBA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/code-frame": "^7.29.7",
@@ -119,7 +119,7 @@
         },
         "node_modules/@babel/core/node_modules/semver": {
             "version": "6.3.1",
-            "dev": true,
+            "devOptional": true,
             "license": "ISC",
             "bin": {
                 "semver": "bin/semver.js"
@@ -154,7 +154,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.29.7.tgz",
             "integrity": "sha512-DkXD5OJQaAQIdZ1bt3UZdEnHAn9Imd3IVBdX03UFe+ony9Ojw5pzr9YVKGDY1jt+Gcn/FnGkNf8r+Vj5NOJWtQ==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/parser": "^7.29.7",
@@ -184,7 +184,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.29.7.tgz",
             "integrity": "sha512-wem6WaBj4NaVYVdNhLPPVacES6ZJ+KBBfSkTMD3YZxbP3rm3Di85tJU5ljaUNhaOynt+Aj0xruhYuzQBt8n71g==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/compat-data": "^7.29.7",
@@ -199,7 +199,7 @@
         },
         "node_modules/@babel/helper-compilation-targets/node_modules/semver": {
             "version": "6.3.1",
-            "dev": true,
+            "devOptional": true,
             "license": "ISC",
             "bin": {
                 "semver": "bin/semver.js"
@@ -282,7 +282,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/helper-globals/-/helper-globals-7.29.7.tgz",
             "integrity": "sha512-3nQVUAtvkKH9zahfWgw96Jc/uFOmjACE1kQz82E2lqWmHBgjzbNlsC22nuQTfahmWeQtTq5nQ/4Nnd2A1wj4zA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">=6.9.0"
@@ -306,7 +306,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.29.7.tgz",
             "integrity": "sha512-ejHwrQQYcm9xnTivShn2IDOlIzInN34AXskvq9QicvCtEzq1Vzclu/tKF8Jq1Cg8JG2GL6/EmjgsCT7lXepE3g==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/traverse": "^7.29.7",
@@ -320,7 +320,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.29.7.tgz",
             "integrity": "sha512-UPUVSyXbOh627KiCIGQSgwWzGeBKLkaJ9PJEdrngIwMSzxLR4jS4+f1f1jb7VzBbg8nFLaYotvVPFCTqdrmTAg==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/helper-module-imports": "^7.29.7",
@@ -411,7 +411,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.29.7.tgz",
             "integrity": "sha512-Pb5ijPrZ89GDH8223L4UP8i6QApWxs04RbPQJTeWDV0/keR2E36MeKnyr6LYmUUvqRRI+Iv87SuF1W6ErINzYw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">=6.9.0"
@@ -421,7 +421,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.29.7.tgz",
             "integrity": "sha512-qehxGkRj55h/ff8EMaJ+cYhyaKlHIxqYDn682wQD7RNp9UujOQsHog2uS0r2vzr4pW+sXf90NeeayjcNaX3fFg==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">=6.9.0"
@@ -431,7 +431,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/helper-validator-option/-/helper-validator-option-7.29.7.tgz",
             "integrity": "sha512-N9ZErrD+yW5geCDtBqnOoxmR8+tNKiGuxKlDpuJxfsqpa2dFcexaziGAE/qoHLiDDreVNMupxGmSoNlyvsA3gw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">=6.9.0"
@@ -456,7 +456,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.29.7.tgz",
             "integrity": "sha512-1k2lAGRMfHTcwuNYcCNUmaUffmQv8KWMfh2iJUUeRlwlwH4FdNG7mfPI10NPfLHJFThE4Tyr4mv7kTNZOiPuBg==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/template": "^7.29.7",
@@ -470,7 +470,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.29.7.tgz",
             "integrity": "sha512-hnORnjP/1P/zFEndoeX+n+t1RwWRJiJpM/jO7FW32Kn9r5+sJB2JWOdYo4L6k78j15eCwY3Gm/7364B1EMwtNg==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/types": "^7.29.7"
@@ -2102,7 +2102,7 @@
         },
         "node_modules/@babel/runtime": {
             "version": "7.25.6",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "regenerator-runtime": "^0.14.0"
@@ -2115,7 +2115,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.29.7.tgz",
             "integrity": "sha512-puq+Gf35oI24FeN11LkoUQFqv9uwNeWpxXZi/Ji3rRIoKAzKnxRaZ+Gkj0vKS9ZCiTESfng1N9LyOyXvo+m+Gg==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/code-frame": "^7.29.7",
@@ -2130,7 +2130,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.29.7.tgz",
             "integrity": "sha512-EhlfNQtZ+NK22w5BM61ciuiq1m58ed33Wr1Xan//ZRTy6hgjnwyCffRYwzsGXdASJSUJ1guZILsErh1eQcl+zw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/code-frame": "^7.29.7",
@@ -2149,7 +2149,7 @@
             "version": "7.29.7",
             "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.29.7.tgz",
             "integrity": "sha512-4zBIxpPzowiZpusoFkyGVwakdRJUyuH5PxQ/PrqghfdFWWasvnCdPfQXHrenDai+gyLARulZjZowCOj6fjT4pA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/helper-string-parser": "^7.29.7",
@@ -3289,7 +3289,6 @@
         },
         "node_modules/@jest/schemas": {
             "version": "29.6.3",
-            "dev": true,
             "license": "MIT",
             "dependencies": {
                 "@sinclair/typebox": "^0.27.8"
@@ -3366,7 +3365,7 @@
         },
         "node_modules/@jest/types": {
             "version": "29.6.3",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@jest/schemas": "^29.6.3",
@@ -3394,7 +3393,7 @@
             "version": "2.3.5",
             "resolved": "https://registry.npmjs.org/@jridgewell/remapping/-/remapping-2.3.5.tgz",
             "integrity": "sha512-LI9u/+laYG4Ds1TDKSJW2YPrIlcVYOwi2fUC6xB43lueCjgxV4lffOCZCtYFiH6TNOX+tQKXx97T4IKHbhyHEQ==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@jridgewell/gen-mapping": "^0.3.5",
@@ -4307,7 +4306,6 @@
         },
         "node_modules/@sinclair/typebox": {
             "version": "0.27.8",
-            "dev": true,
             "license": "MIT"
         },
         "node_modules/@sindresorhus/is": {
@@ -4590,12 +4588,12 @@
         },
         "node_modules/@types/istanbul-lib-coverage": {
             "version": "2.0.6",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "node_modules/@types/istanbul-lib-report": {
             "version": "3.0.3",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@types/istanbul-lib-coverage": "*"
@@ -4603,7 +4601,7 @@
         },
         "node_modules/@types/istanbul-reports": {
             "version": "3.0.4",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@types/istanbul-lib-report": "*"
@@ -4847,7 +4845,7 @@
         },
         "node_modules/@types/yargs": {
             "version": "17.0.33",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@types/yargs-parser": "*"
@@ -4855,7 +4853,7 @@
         },
         "node_modules/@types/yargs-parser": {
             "version": "21.0.3",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "node_modules/@types/yauzl": {
@@ -7116,7 +7114,6 @@
         },
         "node_modules/asap": {
             "version": "2.0.6",
-            "dev": true,
             "license": "MIT"
         },
         "node_modules/asn1.js": {
@@ -7693,7 +7690,7 @@
         },
         "node_modules/braces": {
             "version": "3.0.3",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "fill-range": "^7.1.1"
@@ -7849,7 +7846,7 @@
         },
         "node_modules/bser": {
             "version": "2.1.1",
-            "dev": true,
+            "devOptional": true,
             "license": "Apache-2.0",
             "dependencies": {
                 "node-int64": "^0.4.0"
@@ -8475,7 +8472,7 @@
         },
         "node_modules/ci-info": {
             "version": "3.9.0",
-            "dev": true,
+            "devOptional": true,
             "funding": [
                 {
                     "type": "github",
@@ -8550,7 +8547,7 @@
         },
         "node_modules/cliui": {
             "version": "8.0.1",
-            "dev": true,
+            "devOptional": true,
             "license": "ISC",
             "dependencies": {
                 "string-width": "^4.2.0",
@@ -8563,12 +8560,12 @@
         },
         "node_modules/cliui/node_modules/emoji-regex": {
             "version": "8.0.0",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "node_modules/cliui/node_modules/string-width": {
             "version": "4.2.3",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "emoji-regex": "^8.0.0",
@@ -8581,7 +8578,7 @@
         },
         "node_modules/cliui/node_modules/wrap-ansi": {
             "version": "7.0.0",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "ansi-styles": "^4.0.0",
@@ -8934,7 +8931,7 @@
             "version": "3.7.0",
             "resolved": "https://registry.npmjs.org/connect/-/connect-3.7.0.tgz",
             "integrity": "sha512-ZqRXc+tZukToSNmh5C2iWMSoV3X1YUcPbqEM4DkEG5tNQXrQUZCNVGGv3IuicnkMtPfGf3Xtp8WCXs295iQ1pQ==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "debug": "2.6.9",
@@ -8950,7 +8947,7 @@
             "version": "2.6.9",
             "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
             "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "ms": "2.0.0"
@@ -8960,7 +8957,7 @@
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
             "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "node_modules/consola": {
@@ -9029,7 +9026,7 @@
         },
         "node_modules/convert-source-map": {
             "version": "2.0.0",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "node_modules/cookie": {
@@ -10901,7 +10898,7 @@
         },
         "node_modules/ee-first": {
             "version": "1.1.1",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "node_modules/ejs": {
@@ -10993,7 +10990,7 @@
         },
         "node_modules/encodeurl": {
             "version": "1.0.2",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">= 0.8"
@@ -11094,7 +11091,7 @@
             "version": "2.1.4",
             "resolved": "https://registry.npmjs.org/error-stack-parser/-/error-stack-parser-2.1.4.tgz",
             "integrity": "sha512-Sk5V6wVazPhq5MhpO+AUxJn5x7XSXGl1R93Vn7i+zS15KDVxQijejNCrz8340/2bgLBjR9GtEG8ZVKONDjcqGQ==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "stackframe": "^1.3.4"
@@ -11661,7 +11658,7 @@
         },
         "node_modules/escape-html": {
             "version": "1.0.3",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "node_modules/escape-string-regexp": {
@@ -12685,7 +12682,7 @@
             "version": "3.1.3",
             "resolved": "https://registry.npmjs.org/exponential-backoff/-/exponential-backoff-3.1.3.tgz",
             "integrity": "sha512-ZgEeZXj30q+I0EN+CbSSpIyPaJ5HVQD18Z1m+u1FXbAeT94mr1zw50q4q6jiiC447Nl/YTcIYSAftiGqetwXCA==",
-            "dev": true,
+            "devOptional": true,
             "license": "Apache-2.0"
         },
         "node_modules/express": {
@@ -12993,7 +12990,7 @@
         },
         "node_modules/fb-watchman": {
             "version": "2.0.2",
-            "dev": true,
+            "devOptional": true,
             "license": "Apache-2.0",
             "dependencies": {
                 "bser": "2.1.1"
@@ -13104,7 +13101,7 @@
         },
         "node_modules/fill-range": {
             "version": "7.1.1",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "to-regex-range": "^5.0.1"
@@ -13127,7 +13124,7 @@
             "version": "1.1.2",
             "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.2.tgz",
             "integrity": "sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "debug": "2.6.9",
@@ -13146,7 +13143,7 @@
             "version": "2.6.9",
             "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
             "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "ms": "2.0.0"
@@ -13156,7 +13153,7 @@
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
             "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "node_modules/find-cache-dir": {
@@ -13355,7 +13352,7 @@
             "version": "0.0.6",
             "resolved": "https://registry.npmjs.org/flow-enums-runtime/-/flow-enums-runtime-0.0.6.tgz",
             "integrity": "sha512-3PYnM29RFXwvAN6Pc/scUfkI7RwhQ/xqyLUyPNlXUp9S40zI8nup9tUSrTLSVnWGBN38FNiGWbwZOB6uR4OGdw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "node_modules/flush-write-stream": {
@@ -13611,7 +13608,7 @@
         },
         "node_modules/gensync": {
             "version": "1.0.0-beta.2",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">=6.9.0"
@@ -13619,7 +13616,7 @@
         },
         "node_modules/get-caller-file": {
             "version": "2.0.5",
-            "dev": true,
+            "devOptional": true,
             "license": "ISC",
             "engines": {
                 "node": "6.* || 8.* || >= 10.*"
@@ -14317,7 +14314,7 @@
             "version": "1.2.1",
             "resolved": "https://registry.npmjs.org/image-size/-/image-size-1.2.1.tgz",
             "integrity": "sha512-rH+46sQJ2dlwfjfhCyNx5thzrv+dtmBIhPHk0zgRUukHzZ/kRueTJXoYYsclBaKcSMBWuGbOFXtioLpzTb5euw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "queue": "6.0.2"
@@ -14411,7 +14408,7 @@
         },
         "node_modules/inherits": {
             "version": "2.0.4",
-            "dev": true,
+            "devOptional": true,
             "license": "ISC"
         },
         "node_modules/internal-slot": {
@@ -14439,7 +14436,7 @@
             "version": "2.2.4",
             "resolved": "https://registry.npmjs.org/invariant/-/invariant-2.2.4.tgz",
             "integrity": "sha512-phJfQVBuaJM5raOpJjSfkiD6BpbCE4Ns//LaXl6wGYtUBY83nWS6Rf9tXm2e8VaK60JEjYldbPif/A2B1C2gNA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "loose-envify": "^1.0.0"
@@ -14781,7 +14778,7 @@
         },
         "node_modules/is-number": {
             "version": "7.0.0",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">=0.12.0"
@@ -15450,7 +15447,7 @@
         },
         "node_modules/jest-get-type": {
             "version": "29.6.3",
-            "dev": true,
+            "devOptional": true,
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@@ -24836,7 +24841,7 @@
             "version": "0.83.7",
             "resolved": "https://registry.npmjs.org/metro-resolver/-/metro-resolver-0.83.7.tgz",
             "integrity": "sha512-WSJIENlMcoSsuz66IfBHOkgfp3KJt2UW2TnEHPf1b8pIG2eEXNOVmo2+03A0H17WY2XGXWgxL0CG7FAopqgB1A==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "flow-enums-runtime": "^0.0.6"
@@ -24849,7 +24854,7 @@
             "version": "0.83.7",
             "resolved": "https://registry.npmjs.org/metro-runtime/-/metro-runtime-0.83.7.tgz",
             "integrity": "sha512-9GKkJURaB2iyYoEExKnedzAHzxmKtSi+k0tsZUvMoU27tBZJElchYt7JH/Ai/XzYAI9lCAaV7u5HZSI8J5Z+wQ==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/runtime": "^7.25.0",
@@ -24863,7 +24868,7 @@
             "version": "0.83.7",
             "resolved": "https://registry.npmjs.org/metro-source-map/-/metro-source-map-0.83.7.tgz",
             "integrity": "sha512-JgA1h7oc1a1jydBe1GhVFsUoMYo3wLPk7oRA32rjlDsq+sP2JLt9x2p2lWbNSxTm/u8NV4VRid3hvEJgcX8tKw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/traverse": "^7.29.0",
@@ -24884,7 +24889,7 @@
             "version": "0.83.7",
             "resolved": "https://registry.npmjs.org/metro-symbolicate/-/metro-symbolicate-0.83.7.tgz",
             "integrity": "sha512-g4suyxw20WOHWI680c+Kq4wC/NF+Hx5pRH9afrMp+sMTxqLeKcPR1Xf4wMhsjlbvx7LbIREdke6q928jEjvJWw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "flow-enums-runtime": "^0.0.6",
@@ -24905,7 +24910,7 @@
             "version": "0.83.7",
             "resolved": "https://registry.npmjs.org/metro-transform-plugins/-/metro-transform-plugins-0.83.7.tgz",
             "integrity": "sha512-Ss0FpBiZDjX2kwhukMDl5sNdYK8T/06IPqxNE4H6PTlRlfs9q11cef13c/xESY/Pm4VCkp1yJUZO3kXzvMxQFA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/core": "^7.25.2",
@@ -24923,7 +24928,7 @@
             "version": "0.83.7",
             "resolved": "https://registry.npmjs.org/metro-transform-worker/-/metro-transform-worker-0.83.7.tgz",
             "integrity": "sha512-UegCo7ygB2fT64mRK2nbAjQVJ1zSwIIHy8d96jJv2nKZFDaViYBiughEdu5HM/Ceq0WN3LZrZk3zhl9aoiLYFw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "@babel/core": "^7.25.2",
@@ -24948,14 +24953,14 @@
             "version": "0.35.0",
             "resolved": "https://registry.npmjs.org/hermes-estree/-/hermes-estree-0.35.0.tgz",
             "integrity": "sha512-xVx5Opwy8Oo1I5yGpVRhCvWL/iV3M+ylksSKVNlxxD90cpDpR/AR1jLYqK8HWihm065a6UI3HeyAmYzwS8NOOg==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT"
         },
         "packages/react-native/node_modules/metro/node_modules/hermes-parser": {
             "version": "0.35.0",
             "resolved": "https://registry.npmjs.org/hermes-parser/-/hermes-parser-0.35.0.tgz",
             "integrity": "sha512-9JLjeHxBx8T4CAsydZR49PNZUaix+WpQJwu9p2010lu+7Kwl6D/7wYFFJxoz+aXkaaClp9Zfg6W6/zVlSJORaA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "hermes-estree": "0.35.0"
@@ -24965,7 +24970,7 @@
             "version": "7.5.11",
             "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.11.tgz",
             "integrity": "sha512-zS54Oen9bITtp7kp2XM3AydrCIq1D+HwJOuH+c+e4LfpL/lotP5osijd+UoMnxwAam1GN8R4KtLAyIrIcBNpiA==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">=8.3.0"
@@ -25000,7 +25005,7 @@
             "version": "1.54.0",
             "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.54.0.tgz",
             "integrity": "sha512-aU5EJuIN2WDemCcAp2vFBfp/m4EAhWJnUNSSw0ixs7/kXbd6Pg64EmwJkNdFhB8aWt1sH2CTXrLxo/iAGV3oPQ==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">= 0.6"
@@ -25010,7 +25015,7 @@
             "version": "3.0.2",
             "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-3.0.2.tgz",
             "integrity": "sha512-Lbgzdk0h4juoQ9fCKXW4by0UJqj+nOOrI9MJ1sSj4nI8aI2eo1qmvQEie4VD1glsS250n15LsWsYtCugiStS5A==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "mime-db": "^1.54.0"
@@ -25027,7 +25032,7 @@
             "version": "1.0.0",
             "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-1.0.0.tgz",
             "integrity": "sha512-8Ofs/AUQh8MaEcrlq5xOX0CQ9ypTF5dl78mjlMNfOK08fzpgTHQRQPBxcPlEtIw0yRpws+Zo/3r+5WRby7u3Gg==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">= 0.6"
@@ -25037,7 +25042,7 @@
             "version": "0.83.7",
             "resolved": "https://registry.npmjs.org/ob1/-/ob1-0.83.7.tgz",
             "integrity": "sha512-9M5kpuOLyTPogMtZiQUIxdAZxl7Dxs6tVBbJErSumsqGMuhVSoUbkfeZ3XNPpLpwBBtqY5QDUzGwggLHX3slQg==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "dependencies": {
                 "flow-enums-runtime": "^0.0.6"
@@ -25211,7 +25216,7 @@
             "version": "2.1.0",
             "resolved": "https://registry.npmjs.org/serialize-error/-/serialize-error-2.1.0.tgz",
             "integrity": "sha512-ghgmKt5o4Tly5yEG/UJp8qTd0AN7Xalw4XBtDEKP655B699qMEtra1WlXeE6WIvdEG481JvRxULKsInq/iNysw==",
-            "dev": true,
+            "devOptional": true,
             "license": "MIT",
             "engines": {
                 "node": ">=0.10.0"
@@ -25237,7 +25242,7 @@
             "version": "0.5.7",
             "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
             "integrity": "sha512-LbrmJOMUSdEVxIKvdcJzQC+nQhe8FUZQTXQy6+I75skNgn3OoQ0DZA8YnFa7gp8tqtL3KPf1kmo0R5DoApeSGQ==",
-            "dev": true,
+            "devOptional": true,
             "license": "BSD-3-Clause",
             "engines": {
                 "node": ">=0.10.0"
@@ -25352,7 +25357,7 @@
         },
         "packages/sdk-core": {
             "name": "@backtrace/sdk-core",
-            "version": "0.8.3",
+            "version": "0.8.4-rc",
             "license": "MIT",
             "devDependencies": {
                 "@rollup/plugin-typescript": "^11.1.6",
@@ -25403,7 +25408,7 @@
             "version": "0.2.1",
             "license": "MIT",
             "dependencies": {
-                "@backtrace/sdk-core": "0.8.3",
+                "@backtrace/sdk-core": "0.8.3 || 0.8.4-rc",
                 "rrweb": "^2.0.0-alpha.15"
             },
             "devDependencies": {
diff --git a/packages/browser/package.json b/packages/browser/package.json
index fa6aaf5b..a0e1b566 100644
--- a/packages/browser/package.json
+++ b/packages/browser/package.json
@@ -12,7 +12,7 @@
         "clean": "rimraf \"lib\"",
         "format": "prettier --write '**/*.ts'",
         "lint": "eslint . --ext .ts",
-        "prepublishOnly": "npm -w ../sdk-core run prepublishOnly && npm run clean && cross-env NODE_ENV=production npm run build",
+        "prepublishOnly": "npm -w ../sdk-core run prepack && npm run clean && cross-env NODE_ENV=production npm run build",
         "watch": "concurrently \"tsc -p tsconfig.build.json --noEmit --watch\" \"rollup -c rollup.config.mjs --watch\"",
         "test": "cross-env NODE_OPTIONS=\"$NODE_OPTIONS --experimental-vm-modules\" NODE_NO_WARNINGS=1 NODE_ENV=test jest"
     },
@@ -39,7 +39,7 @@
         "/lib"
     ],
     "dependencies": {
-        "@backtrace/sdk-core": "0.8.3"
+        "@backtrace/sdk-core": "0.8.3 || 0.8.4-rc"
     },
     "devDependencies": {
         "@reduxjs/toolkit": "^1.9.5",
@@ -58,4 +58,4 @@
         "typescript": "^5.0.4",
         "ua-parser-js": "^1.0.35"
     }
-}
\ No newline at end of file
+}
diff --git a/packages/node/package.json b/packages/node/package.json
index 268e2778..c924cb8b 100644
--- a/packages/node/package.json
+++ b/packages/node/package.json
@@ -56,7 +56,7 @@
         "typescript": "^5.0.4"
     },
     "dependencies": {
-        "@backtrace/sdk-core": "^0.8.3",
+        "@backtrace/sdk-core": "^0.8.3 || 0.8.4-rc",
         "form-data": "^4.0.0"
     }
-}
\ No newline at end of file
+}
diff --git a/packages/react-native/README.md b/packages/react-native/README.md
index 83fac23d..44871f83 100644
--- a/packages/react-native/README.md
+++ b/packages/react-native/README.md
@@ -82,9 +82,20 @@ client.send(new Error('Something broke!'));
 Client-side error reports are based on minified code. Upload source maps and source code to resolve minified code to
 your original source identifiers.
 
-[(Source Map feature documentation)](https://docs.saucelabs.com/error-reporting/platform-integrations/source-map/)
+Install the build-time tools in the application when using Backtrace's source-map scripts:
+
+```sh
+npm install --save-dev @backtrace/sourcemap-tools@^0.2.5 @backtrace/javascript-cli
+```
 
-<? TBD: Link to source upload doc ?>
+The serializer also needs Metro (`>=0.76.0`). Use the Metro version compatible with the application's React Native version;
+React Native applications normally already provide it. Metro and `@backtrace/sourcemap-tools` are optional peers, installing the SDK alone does not install these tools. 
+The CLI package supplies the `backtrace-js` executable used by the iOS upload script; the Android upload task also uses `@backtrace/javascript-cli`.
+
+Configure `@backtrace/react-native/scripts/processSourceMap` as the Metro custom serializer before enabling the upload scripts.
+See the [example application's source-map setup](https://github.com/backtrace-labs/backtrace-javascript/tree/main/examples/sdk/reactNative#source-maps) for Metro, Android and iOS configuration (these tools are optional for basic runtime error reporting).
+
+[(Source Map feature documentation)](https://docs.saucelabs.com/error-reporting/platform-integrations/source-map/)
 
 ### Deobfuscate ProGuard and R8 builds (Android)
 
diff --git a/packages/react-native/package.json b/packages/react-native/package.json
index 6645c506..66671158 100644
--- a/packages/react-native/package.json
+++ b/packages/react-native/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@backtrace/react-native",
-    "version": "0.2.2",
+    "version": "0.2.3-rc",
     "description": "Backtrace-Javascript React-Native integration",
     "main": "lib/commonjs/index",
     "module": "lib/module/index",
@@ -8,6 +8,7 @@
     "react-native": "src/index",
     "source": "src/index",
     "files": [
+        "RELEASE_CANDIDATE.md",
         "src",
         "lib",
         "android",
@@ -32,8 +33,11 @@
         "watch": "tsc --noEmit --watch",
         "clean": "rimraf \"lib\"",
         "format:check": "eslint \"**/*.{js,ts,tsx}\"",
-        "prepublishOnly": "npm run clean && cross-env NODE_ENV=production bob build",
-        "test": "cross-env NODE_ENV=test jest"
+        "test": "cross-env NODE_ENV=test jest",
+        "generate:version": "node scripts/generate-agent-version.cjs",
+        "prebuild": "npm run generate:version",
+        "pretest": "npm run generate:version",
+        "prepack": "npm run clean && cross-env NODE_ENV=production npm run build"
     },
     "keywords": [
         "Error",
@@ -76,6 +80,8 @@
         ]
     },
     "peerDependencies": {
+        "@backtrace/sourcemap-tools": "^0.2.5",
+        "metro": ">=0.76.0",
         "react": ">=18.0.0",
         "react-native": ">=0.72.0"
     },
@@ -95,7 +101,21 @@
         "typescript": "^5.0.2"
     },
     "dependencies": {
-        "@backtrace/sdk-core": "^0.8.3",
+        "@backtrace/sdk-core": "0.8.4-rc",
+        "pretty-format": "^29.7.0",
+        "promise": "^8.3.0",
         "web-streams-polyfill": "^4.3.0"
+    },
+    "publishConfig": {
+        "access": "public",
+        "tag": "rc"
+    },
+    "peerDependenciesMeta": {
+        "@backtrace/sourcemap-tools": {
+            "optional": true
+        },
+        "metro": {
+            "optional": true
+        }
     }
 }
diff --git a/packages/react-native/scripts/generate-agent-version.cjs b/packages/react-native/scripts/generate-agent-version.cjs
new file mode 100644
index 00000000..41439e7d
--- /dev/null
+++ b/packages/react-native/scripts/generate-agent-version.cjs
@@ -0,0 +1,29 @@
+'use strict';
+
+const fs = require('node:fs');
+const path = require('node:path');
+
+const args = process.argv.slice(2);
+if (args.length > 1 || (args.length === 1 && args[0] !== '--check')) {
+    throw new Error('Usage: node scripts/generate-agent-version.cjs [--check]');
+}
+
+const root = path.resolve(__dirname, '..');
+const { version } = JSON.parse(fs.readFileSync(path.join(root, 'package.json'), 'utf8'));
+// Validate before interpolating package metadata into TypeScript source.
+if (typeof version !== 'string' || !/^\d+\.\d+\.\d+(?:-[0-9A-Za-z.-]+)?(?:\+[0-9A-Za-z.-]+)?$/.test(version)) {
+    throw new Error('package.json must contain a valid package version.');
+}
+
+const target = path.join(root, 'src/common/agentVersion.ts');
+const source = `// Generated from package.json; do not edit.\nexport const agentVersion = '${version}';\n`;
+const current = fs.existsSync(target) ? fs.readFileSync(target, 'utf8') : undefined;
+
+if (current !== source) {
+    if (args[0] === '--check') {
+        throw new Error('Stale agentVersion.ts. Run npm run generate:version.');
+    }
+
+    fs.mkdirSync(path.dirname(target), { recursive: true });
+    fs.writeFileSync(target, source, 'utf8');
+}
diff --git a/packages/react-native/src/BacktraceClient.ts b/packages/react-native/src/BacktraceClient.ts
index 03fd6aaa..b21050ee 100644
--- a/packages/react-native/src/BacktraceClient.ts
+++ b/packages/react-native/src/BacktraceClient.ts
@@ -24,9 +24,9 @@ import { DimensionChangeBreadcrumbSubscriber } from './breadcrumbs/events/Dimens
 import { WebRequestEventSubscriber } from './breadcrumbs/events/WebRequestEventSubscriber';
 import { FileBreadcrumbsStorage } from './breadcrumbs/FileBreadcrumbsStorage';
 import type { BacktraceClientSetup } from './builder/BacktraceClientSetup';
+import { agentVersion } from './common/agentVersion';
 import { DebuggerHelper } from './common/DebuggerHelper';
 import { version } from './common/platformHelper';
-import { version as agentVersion } from '../package.json';
 import { CrashReporter } from './crashReporter/CrashReporter';
 import { generateUnhandledExceptionHandler } from './handlers';
 import { AndroidUnhandledException } from './handlers/android/AndroidUnhandledException';
@@ -44,6 +44,7 @@ const REQUIRED_APPLICATION_ATTRIBUTES = ['application', 'application.version'];
 const INERT_SUBMISSION_URL = 'https://submit.backtrace.io/unavailable/unavailable/json';
 
 export class BacktraceClient extends BacktraceCoreClient<BacktraceConfiguration> {
+    private _disposed = false;
     private _crashReporter?: CrashReporter;
     private _anrWatchdogHandler?: AnrWatchdogHandler;
     private readonly _exceptionHandler: ExceptionHandler = generateUnhandledExceptionHandler();
@@ -103,6 +104,7 @@ export class BacktraceClient extends BacktraceCoreClient<BacktraceConfiguration>
     }
 
     public initialize(): void {
+        this._disposed = false;
         this.ensureApplicationAttributes();
 
         const lockId = this.guard(
@@ -142,10 +144,21 @@ export class BacktraceClient extends BacktraceCoreClient<BacktraceConfiguration>
     }
 
     public dispose(): void {
+        if (this._disposed) {
+            return;
+        }
+        this._disposed = true;
+
         this.guard(() => this._exceptionHandler.dispose(), 'failed to restore the error handlers');
         this.guard(() => this._anrWatchdogHandler?.dispose(), 'failed to stop the ANR watchdog');
         this.guard(() => this._crashReporter?.dispose(), 'failed to release the native crash reporter');
-        super.dispose();
+        try {
+            super.dispose();
+        } catch (err) {
+            // A custom module may fail during cleanup. Allow the caller to retry.
+            this._disposed = false;
+            throw err;
+        }
         // super.dispose() only clears BacktraceCoreClient._instance.
         if (BacktraceClient._instance === this) {
             BacktraceClient._instance = undefined;
diff --git a/packages/react-native/src/common/agentVersion.ts b/packages/react-native/src/common/agentVersion.ts
new file mode 100644
index 00000000..7f5632a2
--- /dev/null
+++ b/packages/react-native/src/common/agentVersion.ts
@@ -0,0 +1,2 @@
+// Generated from package.json; do not edit.
+export const agentVersion = '0.2.3-rc';
diff --git a/packages/react-native/src/handlers/UnhandledExceptionHandler.ts b/packages/react-native/src/handlers/UnhandledExceptionHandler.ts
index 539d636b..add2ae1b 100644
--- a/packages/react-native/src/handlers/UnhandledExceptionHandler.ts
+++ b/packages/react-native/src/handlers/UnhandledExceptionHandler.ts
@@ -1,131 +1,230 @@
 import { BacktraceReport, warnFailure } from '@backtrace/sdk-core';
+import { format as prettyFormat } from 'pretty-format';
 import type { BacktraceClient } from '../BacktraceClient';
 import { hermes } from '../common/hermesHelper';
 import { CrashReporter } from '../crashReporter/CrashReporter';
 import { type ExceptionHandler } from './ExceptionHandler';
 
 // eslint-disable-next-line @typescript-eslint/no-var-requires
-const rejectionTracking = require('promise/setimmediate/rejection-tracking');
+const rejectionTracking = require('promise/setimmediate/rejection-tracking') as {
+    enable(options: {
+        allRejections: boolean;
+        onUnhandled: (id: number, rejection?: unknown) => void;
+        onHandled: (id: number) => void;
+    }): void;
+};
 
-function getPrettyFormat() {
-    try {
-        return require('pretty-format');
-    } catch {
-        return undefined;
-    }
-}
-
-const cachedPrettyFormat = getPrettyFormat();
+type GlobalErrorHandler = ReturnType<typeof ErrorUtils.getGlobalHandler>;
 
 export class UnhandledExceptionHandler implements ExceptionHandler {
     protected enabled = true;
-    public captureManagedErrors(client: BacktraceClient) {
-        const globalErrorHandler = ErrorUtils.getGlobalHandler();
-        ErrorUtils.setGlobalHandler((error: Error, fatal?: boolean) => {
-            // The app's own handler always runs, also after dispose.
-            try {
-                if (this.enabled) {
-                    client.send(error, {
-                        'error.type': 'Unhandled exception',
-                        fatal,
-                    });
+
+    private _managedClient?: BacktraceClient;
+    private _rejectionClient?: BacktraceClient;
+    private _installedHandler?: GlobalErrorHandler;
+    private _previousHandler?: GlobalErrorHandler;
+    private _reportingManagedError = false;
+    private _reportingRejection = false;
+    private _warning = false;
+
+    public captureManagedErrors(client: BacktraceClient): void {
+        if (!this.enabled || this._installedHandler) {
+            return;
+        }
+
+        const previousHandler = ErrorUtils.getGlobalHandler();
+        this._managedClient = client;
+
+        const installedHandler: GlobalErrorHandler = (error: Error, fatal?: boolean) => {
+            const managedClient = this._managedClient;
+
+            if (this.enabled && managedClient && !this._reportingManagedError) {
+                this._reportingManagedError = true;
+
+                try {
+                    // send() can throw before returning a promise. Observe rejected
+                    // submissions without delaying the application's fatal handler.
+                    void Promise.resolve(
+                        managedClient.send(error, {
+                            'error.type': 'Unhandled exception',
+                            fatal,
+                        }),
+                    ).catch(() => undefined);
+
                     // iOS: RCTFatal turns a fatal into a native crash the reporter would double-report.
+                    // Preserve native reporting when synchronous JS report construction fails.
                     if (fatal) {
                         CrashReporter.markFatalError();
                     }
+                } catch (err) {
+                    this.warnReportingFailure('failed to report an unhandled error', err);
+                } finally {
+                    this._reportingManagedError = false;
                 }
-            } catch (err) {
-                warnFailure('failed to report an unhandled error', err);
-            } finally {
-                globalErrorHandler(error, fatal);
             }
-        });
+
+            // Disposed and re-entered wrappers still forward.
+            // Exceptions from the application's original handler must keep their original behavior.
+            previousHandler(error, fatal);
+        };
+
+        try {
+            ErrorUtils.setGlobalHandler(installedHandler);
+            this._previousHandler = previousHandler;
+            this._installedHandler = installedHandler;
+        } catch (err) {
+            this._managedClient = undefined;
+            throw err;
+        }
     }
 
-    public captureUnhandledPromiseRejections(client: BacktraceClient) {
-        const hermesInternal = hermes();
+    public captureUnhandledPromiseRejections(client: BacktraceClient): void {
+        if (!this.enabled || this._rejectionClient) {
+            return;
+        }
 
-        if (hermesInternal?.hasPromise?.() && hermesInternal?.enablePromiseRejectionTracker) {
-            hermesInternal.enablePromiseRejectionTracker({
-                allRejections: true,
-                onUnhandled: (id: number, rejection: Error | string = 'Unknown') => {
-                    if (!this.enabled) {
-                        return;
-                    }
-                    this.reportRejection(client, id, rejection);
-                },
-            });
-        } else {
-            // This is the same unhandled exception handler that exists in the react-native source code.
-            // The only difference is to make sure we do not execute it in the dev mode (react-native checks it earlier)
-            // and backtrace error reporting function
-            // refs: https://github.com/facebook/react-native/blob/a59b947a1e077d1c3f0d36926d374db5fe7d3291/packages/react-native/Libraries/promiseRejectionTrackingOptions.js#L38
+        this._rejectionClient = client;
+
+        try {
+            const hermesInternal = hermes();
+
+            if (hermesInternal?.hasPromise?.() && hermesInternal.enablePromiseRejectionTracker) {
+                hermesInternal.enablePromiseRejectionTracker({
+                    allRejections: true,
+                    onUnhandled: (id, rejection) => this.reportRejection(id, rejection),
+                });
+                return;
+            }
+
+            // Preserve React Native's development warnings when replacing its
+            // fallback rejection tracker.
             rejectionTracking.enable({
                 allRejections: true,
-                onUnhandled: (id: number, rejection: Error) => {
-                    if (this.enabled) {
-                        this.reportRejection(client, id, rejection);
-                    }
-                    if (!__DEV__) {
-                        return;
-                    }
-                    let message: string;
-                    let stack: string | undefined;
-
-                    const stringValue = Object.prototype.toString.call(rejection);
-                    if (stringValue === '[object Error]') {
-                        message = Error.prototype.toString.call(rejection);
-                        stack = rejection.stack as string;
-                    } else {
-                        message = cachedPrettyFormat
-                            ? cachedPrettyFormat(rejection)
-                            : typeof rejection === 'string'
-                              ? rejection
-                              : JSON.stringify({ ...rejection });
-                    }
-
-                    const warning =
-                        `Possible Unhandled Promise Rejection (id: ${id}):\n` +
-                        `${message ?? ''}\n` +
-                        (stack == null ? '' : stack);
-                    console.warn(warning);
+                onUnhandled: (id, rejection) => {
+                    this.reportRejection(id, rejection);
+                    this.warnUnhandledRejection(id, rejection);
                 },
-                onHandled: (id: number) => {
-                    if (!__DEV__) {
-                        return;
+                onHandled: (id) => {
+                    if (__DEV__) {
+                        this.warn(
+                            `Promise Rejection Handled (id: ${id})\n` +
+                                'This means you can ignore any previous messages of the form ' +
+                                `"Possible Unhandled Promise Rejection (id: ${id}):"`,
+                        );
                     }
-                    const warning =
-                        `Promise Rejection Handled (id: ${id})\n` +
-                        'This means you can ignore any previous messages of the form ' +
-                        `"Possible Unhandled Promise Rejection (id: ${id}):"`;
-                    console.warn(warning);
                 },
             });
+        } catch (err) {
+            this._rejectionClient = undefined;
+            throw err;
         }
     }
 
     public dispose(): void {
         this.enabled = false;
+        this._managedClient = undefined;
+        this._rejectionClient = undefined;
+
+        // Another SDK may have wrapped our handler.
+        // Only restore a handler we still own, retained wrappers remain forwarding-only after disposal.
+        if (
+            this._installedHandler &&
+            this._previousHandler &&
+            ErrorUtils.getGlobalHandler() === this._installedHandler
+        ) {
+            ErrorUtils.setGlobalHandler(this._previousHandler);
+        }
+
+        this._installedHandler = undefined;
+        this._previousHandler = undefined;
+
+        // Promise trackers do not expose ownership. Disabling tracking globally
+        // could disable a newer tracker installed by another SDK.
     }
 
-    private reportRejection(client: BacktraceClient, id: number, rejection: Error | string) {
+    private reportRejection(id: number, rejection: unknown = 'Unknown'): void {
+        const client = this._rejectionClient;
+        if (!this.enabled || !client || this._reportingRejection) {
+            return;
+        }
+
+        this._reportingRejection = true;
         try {
-            client.send(
-                new BacktraceReport(
-                    rejection,
-                    {
-                        'error.type': 'Unhandled rejection',
-                        unhandledPromiseRejectionId: id,
-                    },
-                    [],
-                    {
-                        classifiers: ['UnhandledPromiseRejection'],
-                        skipFrames: rejection instanceof Error ? 0 : 1,
-                    },
-                ),
+            const data =
+                rejection instanceof Error || typeof rejection === 'string'
+                    ? rejection
+                    : this.describeRejection(rejection);
+            const report = new BacktraceReport(
+                data,
+                {
+                    'error.type': 'Unhandled rejection',
+                    unhandledPromiseRejectionId: id,
+                },
+                [],
+                {
+                    classifiers: ['UnhandledPromiseRejection'],
+                    // Hide this helper and the tracker callback for synthesized stacks.
+                    skipFrames: rejection instanceof Error ? 0 : 2,
+                },
             );
+
+            void Promise.resolve(client.send(report)).catch(() => undefined);
         } catch (err) {
-            warnFailure('failed to report an unhandled rejection', err);
+            this.warnReportingFailure('failed to report an unhandled rejection', err);
+        } finally {
+            this._reportingRejection = false;
+        }
+    }
+
+    private describeRejection(rejection: unknown): string {
+        try {
+            return typeof rejection === 'string' ? rejection : prettyFormat(rejection);
+        } catch {
+            return '<unformattable rejection>';
+        }
+    }
+
+    private warnUnhandledRejection(id: number, rejection: unknown = 'Unknown'): void {
+        if (!__DEV__) {
+            return;
+        }
+
+        try {
+            const message =
+                rejection instanceof Error
+                    ? `${Error.prototype.toString.call(rejection)}\n${rejection.stack ?? ''}`
+                    : this.describeRejection(rejection);
+            this.warn(`Possible Unhandled Promise Rejection (id: ${id}):\n${message}`);
+        } catch {
+            // Error objects can expose getters that throw.
+        }
+    }
+
+    private warnReportingFailure(message: string, error: unknown): void {
+        if (this._warning) {
+            return;
+        }
+        this._warning = true;
+        try {
+            warnFailure(message, error);
+        } catch {
+            // Logging failures must not replace the application's error.
+        } finally {
+            this._warning = false;
+        }
+    }
+
+    private warn(message: string): void {
+        if (this._warning) {
+            return;
+        }
+        this._warning = true;
+        try {
+            console.warn(message);
+        } catch {
+            // Console can be instrumented by the application or another SDK.
+        } finally {
+            this._warning = false;
         }
     }
 }
diff --git a/packages/react-native/tests/clientInitializationTests.spec.ts b/packages/react-native/tests/clientInitializationTests.spec.ts
index dfcdccbb..cabd2f42 100644
--- a/packages/react-native/tests/clientInitializationTests.spec.ts
+++ b/packages/react-native/tests/clientInitializationTests.spec.ts
@@ -1,5 +1,15 @@
+import {
+    BacktraceReportSubmissionResult,
+    BreadcrumbType,
+    type BacktraceAttachment,
+    type BacktraceCoreClientBuilder,
+    type Breadcrumb,
+} from '@backtrace/sdk-core';
+import assert from 'assert';
 import { NativeModules } from 'react-native';
 import { promisify } from 'util';
+import { version as packageVersion } from '../package.json';
+import { ReactNativeRequestHandler } from '../src/ReactNativeRequestHandler';
 import { mockStreamFileSystem } from './_mocks/fileSystem';
 
 // This package's jest config replaces the react-native preset's setupFiles, so the real Platform throws.
@@ -23,7 +33,8 @@ NativeModules.BacktraceDirectoryProvider = { applicationDirectory: () => '/' };
 // Loaded through the package entry point on purpose: this is the path applications take,
 // it's where the circular imports between the client, the builder and the breadcrumbs storage used to surface.
 /* eslint-disable @typescript-eslint/no-var-requires */
-const { BacktraceClient, BacktraceClientBuilder, BacktraceFileAttachment } = require('../src');
+const { BacktraceClient, BacktraceClientBuilder, BacktraceFileAttachment } =
+    require('../src') as typeof import('../src');
 /* eslint-enable @typescript-eslint/no-var-requires */
 
 const nextTick = promisify(process.nextTick);
@@ -41,8 +52,7 @@ const options = {
 describe('BacktraceClient initialization through the package entry point', () => {
     afterEach(() => {
         BacktraceClient.instance?.dispose();
-        // initialize() stores the singleton on BacktraceClient itself, which dispose() does not clear.
-        (BacktraceClient as { _instance?: unknown })._instance = undefined;
+        jest.restoreAllMocks();
     });
 
     it('Should create the builder from the client', () => {
@@ -50,20 +60,102 @@ describe('BacktraceClient initialization through the package entry point', () =>
     });
 
     it('Should initialize the client through the builder', () => {
-        const client = BacktraceClient.initialize(options, (builder: typeof BacktraceClientBuilder.prototype) => {
+        const client = BacktraceClient.initialize(options, (builder: BacktraceCoreClientBuilder) => {
             expect(builder).toBeInstanceOf(BacktraceClientBuilder);
             builder.useFileSystem(mockStreamFileSystem());
         });
 
         expect(client).toBeInstanceOf(BacktraceClient);
         expect(BacktraceClient.instance).toBe(client);
+        expect(client.agentVersion).toBe(packageVersion);
     });
 
-    it('Should expose breadcrumb files as file attachments', async () => {
-        const client = BacktraceClient.initialize(options, (builder: typeof BacktraceClientBuilder.prototype) =>
+    it('Should clear the disposed singleton and initialize a new enabled client', () => {
+        const first = BacktraceClient.initialize(options, (builder: BacktraceCoreClientBuilder) =>
             builder.useFileSystem(mockStreamFileSystem()),
         );
 
+        first.dispose();
+
+        expect(first.enabled).toBe(false);
+        expect(BacktraceClient.instance).toBeUndefined();
+
+        const replacement = BacktraceClient.initialize(options, (builder: BacktraceCoreClientBuilder) =>
+            builder.useFileSystem(mockStreamFileSystem()),
+        );
+
+        expect(replacement).not.toBe(first);
+        expect(replacement.enabled).toBe(true);
+        expect(BacktraceClient.instance).toBe(replacement);
+    });
+
+    it('Should retain the current singleton and its console capture when an older client is disposed again', () => {
+        jest.spyOn(console, 'log').mockImplementation(() => undefined);
+        const first = BacktraceClient.initialize(options, (builder: BacktraceCoreClientBuilder) =>
+            builder.useFileSystem(mockStreamFileSystem()),
+        );
+        first.dispose();
+        const replacement = BacktraceClient.initialize(options, (builder: BacktraceCoreClientBuilder) =>
+            builder.useFileSystem(mockStreamFileSystem()),
+        );
+        const breadcrumbs = replacement.breadcrumbs;
+        assert(breadcrumbs);
+        const addBreadcrumb = jest.spyOn(breadcrumbs, 'addBreadcrumb');
+        const installedConsoleHandler = console.log;
+
+        first.dispose();
+
+        expect(BacktraceClient.instance).toBe(replacement);
+        expect(replacement.enabled).toBe(true);
+        expect(BacktraceClient.initialize(options)).toBe(replacement);
+        expect(console.log).toBe(installedConsoleHandler);
+        console.log('replacement console breadcrumb');
+        expect(addBreadcrumb).toHaveBeenCalledWith(
+            'replacement console breadcrumb',
+            expect.any(Number),
+            BreadcrumbType.Log,
+        );
+    });
+
+    it('Should allow retrying disposal after a module fails and then initialize a fresh client', () => {
+        const failure = new Error('temporary disposal failure');
+        const disposeModule = jest.fn().mockImplementationOnce(() => {
+            throw failure;
+        });
+        const first = BacktraceClient.initialize(options, (builder: BacktraceCoreClientBuilder) =>
+            builder.useFileSystem(mockStreamFileSystem()).useModule({ dispose: disposeModule }),
+        );
+
+        expect(() => first.dispose()).toThrow(failure);
+        expect(first.enabled).toBe(false);
+        expect(BacktraceClient.instance).toBe(first);
+        expect(disposeModule).toHaveBeenCalledTimes(1);
+
+        expect(() => first.dispose()).not.toThrow();
+        expect(disposeModule).toHaveBeenCalledTimes(2);
+        expect(BacktraceClient.instance).toBeUndefined();
+        const replacement = BacktraceClient.initialize(options, (builder: BacktraceCoreClientBuilder) =>
+            builder.useFileSystem(mockStreamFileSystem()),
+        );
+        expect(replacement).not.toBe(first);
+        expect(replacement.enabled).toBe(true);
+        expect(BacktraceClient.instance).toBe(replacement);
+    });
+
+    it('Should submit the retained breadcrumb contents after rotating the files', async () => {
+        const fileSystem = mockStreamFileSystem();
+        const postError = jest
+            .spyOn(ReactNativeRequestHandler.prototype, 'postError')
+            .mockResolvedValue(BacktraceReportSubmissionResult.Ok({}));
+        const client = BacktraceClient.initialize(
+            {
+                ...options,
+                // Keep the submitted report from adding an automatic breadcrumb while we inspect the files.
+                breadcrumbs: { ...options.breadcrumbs, eventType: BreadcrumbType.Manual },
+            },
+            (builder: BacktraceCoreClientBuilder) => builder.useFileSystem(fileSystem),
+        );
+
         // Enough breadcrumbs to rotate the breadcrumb files at least once.
         for (let i = 0; i < 20; i++) {
             client.breadcrumbs?.info(`breadcrumb-${i}`);
@@ -73,7 +165,40 @@ describe('BacktraceClient initialization through the package entry point', () =>
             await nextTick();
         }
 
-        const attachments = client.attachments.filter((attachment) => attachment instanceof BacktraceFileAttachment);
-        expect(attachments.length).toBeGreaterThan(0);
+        await client.send(new Error('report with breadcrumbs'));
+
+        expect(postError).toHaveBeenCalledTimes(1);
+        const submission = postError.mock.calls[0];
+        assert(submission);
+        const [, json, submittedAttachments] = submission;
+        const reportAttachments: BacktraceAttachment[] = submittedAttachments;
+        const attachments = reportAttachments.filter(
+            (attachment): attachment is InstanceType<typeof BacktraceFileAttachment> =>
+                attachment instanceof BacktraceFileAttachment,
+        );
+        expect(attachments).toHaveLength(2);
+        const breadcrumbs = attachments.flatMap((attachment): Breadcrumb[] => {
+            const location = attachment.get();
+            expect(location).toEqual({
+                uri: attachment.filePath,
+                filepath: attachment.filePath,
+                name: attachment.name,
+                filename: attachment.name,
+                type: 'application/json',
+            });
+            return fileSystem
+                .readFileSync(attachment.filePath)
+                .trim()
+                .split('\n')
+                .map((line) => JSON.parse(line));
+        });
+        expect(breadcrumbs.map((breadcrumb) => breadcrumb.message)).toEqual([
+            'breadcrumb-16',
+            'breadcrumb-17',
+            'breadcrumb-18',
+            'breadcrumb-19',
+        ]);
+        expect(JSON.parse(json).attributes['breadcrumbs.lastId']).toBe(breadcrumbs[3]?.id);
+        expect(JSON.parse(json).agentVersion).toBe(packageVersion);
     });
 });
diff --git a/packages/react-native/tests/errorHandlerSafetyTests.spec.ts b/packages/react-native/tests/errorHandlerSafetyTests.spec.ts
new file mode 100644
index 00000000..f5bef38c
--- /dev/null
+++ b/packages/react-native/tests/errorHandlerSafetyTests.spec.ts
@@ -0,0 +1,404 @@
+import { BacktraceReport } from '@backtrace/sdk-core';
+import type { BacktraceClient } from '../src/BacktraceClient';
+
+jest.mock('promise/setimmediate/rejection-tracking', () => ({
+    enable: jest.fn(),
+    disable: jest.fn(),
+}));
+
+jest.mock('../src/common/hermesHelper', () => ({
+    hermes: jest.fn(),
+}));
+
+jest.mock('../src/crashReporter/CrashReporter', () => ({
+    CrashReporter: { markFatalError: jest.fn() },
+}));
+
+import { hermes } from '../src/common/hermesHelper';
+import { CrashReporter } from '../src/crashReporter/CrashReporter';
+import { UnhandledExceptionHandler } from '../src/handlers/UnhandledExceptionHandler';
+
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const rejectionTracking = require('promise/setimmediate/rejection-tracking') as {
+    enable: jest.Mock;
+    disable: jest.Mock;
+};
+
+type Handler = (error: Error, fatal?: boolean) => void;
+type RejectionOptions = {
+    allRejections: boolean;
+    onUnhandled: (id: number, rejection?: unknown) => void;
+    onHandled?: (id: number) => void;
+};
+
+describe('UnhandledExceptionHandler safety', () => {
+    let current: Handler;
+    let previous: jest.Mock;
+    let setGlobalHandler: jest.Mock;
+    let send: jest.Mock;
+    let client: BacktraceClient;
+    let handler: UnhandledExceptionHandler;
+    let originalErrorUtils: PropertyDescriptor | undefined;
+    let originalDev: PropertyDescriptor | undefined;
+    let warn: jest.SpyInstance;
+
+    beforeEach(() => {
+        jest.resetAllMocks();
+        previous = jest.fn();
+        current = previous;
+        send = jest.fn().mockResolvedValue(undefined);
+        client = { send } as unknown as BacktraceClient;
+        handler = new UnhandledExceptionHandler();
+        originalErrorUtils = Object.getOwnPropertyDescriptor(globalThis, 'ErrorUtils');
+        originalDev = Object.getOwnPropertyDescriptor(globalThis, '__DEV__');
+        setGlobalHandler = jest.fn((next: Handler) => {
+            current = next;
+        });
+        Object.defineProperty(globalThis, 'ErrorUtils', {
+            configurable: true,
+            value: { getGlobalHandler: () => current, setGlobalHandler },
+        });
+        Object.defineProperty(globalThis, '__DEV__', { configurable: true, value: false });
+        warn = jest.spyOn(console, 'warn').mockImplementation(() => undefined);
+    });
+
+    afterEach(() => {
+        handler.dispose();
+        if (originalErrorUtils) {
+            Object.defineProperty(globalThis, 'ErrorUtils', originalErrorUtils);
+        } else {
+            Reflect.deleteProperty(globalThis, 'ErrorUtils');
+        }
+        if (originalDev) {
+            Object.defineProperty(globalThis, '__DEV__', originalDev);
+        } else {
+            Reflect.deleteProperty(globalThis, '__DEV__');
+        }
+        jest.restoreAllMocks();
+    });
+
+    describe('managed errors', () => {
+        it('delegates exactly once when synchronous reporting fails and preserves the failure warning', () => {
+            send.mockImplementation(() => {
+                throw new Error('attachment construction failed');
+            });
+            handler.captureManagedErrors(client);
+            const error = new Error('application failure');
+            expect(() => current(error, true)).not.toThrow();
+            expect(previous).toHaveBeenCalledTimes(1);
+            expect(previous).toHaveBeenCalledWith(error, true);
+            expect(CrashReporter.markFatalError).not.toHaveBeenCalled();
+            expect(warn).toHaveBeenCalledWith('Backtrace: failed to report an unhandled error (Error)');
+        });
+
+        it('observes asynchronous failures without delaying delegation or fatal marking', async () => {
+            send.mockRejectedValue(new Error('transport failure'));
+            handler.captureManagedErrors(client);
+            const error = new Error('application failure');
+            current(error, true);
+            expect(previous).toHaveBeenCalledTimes(1);
+            expect(previous).toHaveBeenCalledWith(error, true);
+            expect(CrashReporter.markFatalError).toHaveBeenCalledTimes(1);
+            // A rejected submission must be handled in the same turn,
+            // even if the process remains alive after the application's handler returns.
+            await new Promise((resolve) => setImmediate(resolve));
+        });
+
+        it('delegates even when native fatal marking fails', () => {
+            (CrashReporter.markFatalError as jest.Mock).mockImplementation(() => {
+                throw new Error('native marker failed');
+            });
+            handler.captureManagedErrors(client);
+            const error = new Error('application failure');
+            expect(() => current(error, true)).not.toThrow();
+            expect(previous).toHaveBeenCalledTimes(1);
+            expect(previous).toHaveBeenCalledWith(error, true);
+        });
+
+        it('does not swallow exceptions from the previous global handler', () => {
+            const originalFailure = new Error('previous handler failure');
+            previous.mockImplementation(() => {
+                throw originalFailure;
+            });
+            handler.captureManagedErrors(client);
+            expect(() => current(new Error('application failure'), false)).toThrow(originalFailure);
+            expect(previous).toHaveBeenCalledTimes(1);
+        });
+
+        it('delegates reentrant errors without recursively reporting them and resumes reporting later errors', () => {
+            const nested = new Error('reporting failure');
+            send.mockImplementationOnce(() => current(nested, false));
+            handler.captureManagedErrors(client);
+            const original = new Error('application failure');
+            current(original, false);
+            expect(send).toHaveBeenCalledTimes(1);
+            expect(previous.mock.calls).toEqual([
+                [nested, false],
+                [original, false],
+            ]);
+            current(new Error('later failure'), false);
+            expect(send).toHaveBeenCalledTimes(2);
+        });
+
+        it('still delegates when reporting and diagnostic logging both throw', () => {
+            send.mockImplementation(() => {
+                throw new Error('report construction failure');
+            });
+            warn.mockImplementation(() => {
+                throw new Error('logger failure');
+            });
+            handler.captureManagedErrors(client);
+            const error = new Error('application failure');
+            expect(() => current(error, false)).not.toThrow();
+            expect(previous).toHaveBeenCalledTimes(1);
+            expect(previous).toHaveBeenCalledWith(error, false);
+        });
+
+        it('does not recursively report errors generated by an instrumented warning logger', () => {
+            send.mockImplementation(() => {
+                throw new Error('report construction failure');
+            });
+            const loggingError = new Error('logger failure');
+            warn.mockImplementation(() => current(loggingError, false));
+            handler.captureManagedErrors(client);
+            const original = new Error('application failure');
+            current(original, false);
+            expect(send).toHaveBeenCalledTimes(1);
+            expect(warn).toHaveBeenCalledTimes(1);
+            expect(previous.mock.calls).toEqual([
+                [loggingError, false],
+                [original, false],
+            ]);
+        });
+
+        it('registers only once even when capture is called again with another client', () => {
+            handler.captureManagedErrors(client);
+            const installed = current;
+            const otherSend = jest.fn();
+            handler.captureManagedErrors({ send: otherSend } as unknown as BacktraceClient);
+            expect(current).toBe(installed);
+            expect(setGlobalHandler).toHaveBeenCalledTimes(1);
+            current(new Error('application failure'));
+            expect(send).toHaveBeenCalledTimes(1);
+            expect(otherSend).not.toHaveBeenCalled();
+        });
+
+        it('restores its previous handler on disposal and leaves retained wrappers forwarding-only', () => {
+            handler.captureManagedErrors(client);
+            const retained = current;
+            handler.dispose();
+            expect(current).toBe(previous);
+            const error = new Error('after disposal');
+            retained(error, true);
+            expect(send).not.toHaveBeenCalled();
+            expect(CrashReporter.markFatalError).not.toHaveBeenCalled();
+            expect(previous).toHaveBeenCalledWith(error, true);
+            handler.dispose();
+            expect(setGlobalHandler).toHaveBeenCalledTimes(2);
+        });
+
+        it('preserves later SDK wrappers and forwards through its disposed wrapper', () => {
+            handler.captureManagedErrors(client);
+            const retained = current;
+            const later = jest.fn((error: Error, fatal?: boolean) => retained(error, fatal));
+            ErrorUtils.setGlobalHandler(later);
+            handler.dispose();
+            expect(current).toBe(later);
+            const error = new Error('after disposal');
+            current(error, false);
+            expect(later).toHaveBeenCalledWith(error, false);
+            expect(previous).toHaveBeenCalledWith(error, false);
+            expect(send).not.toHaveBeenCalled();
+        });
+
+        it('does not register after disposal', () => {
+            handler.dispose();
+            handler.captureManagedErrors(client);
+            handler.captureUnhandledPromiseRejections(client);
+            expect(setGlobalHandler).not.toHaveBeenCalled();
+            expect(rejectionTracking.enable).not.toHaveBeenCalled();
+        });
+
+        it('can retry registration after ErrorUtils rejects it', () => {
+            setGlobalHandler.mockImplementationOnce(() => {
+                throw new Error('cannot install handler');
+            });
+            expect(() => handler.captureManagedErrors(client)).toThrow('cannot install handler');
+            handler.captureManagedErrors(client);
+            current(new Error('application failure'));
+            expect(send).toHaveBeenCalledTimes(1);
+        });
+    });
+
+    describe.each(['Hermes', 'fallback'])('%s promise rejections', (engine) => {
+        let tracker: jest.Mock;
+        let options: RejectionOptions;
+
+        beforeEach(() => {
+            tracker = engine === 'Hermes' ? jest.fn() : rejectionTracking.enable;
+            if (engine === 'Hermes') {
+                (hermes as jest.Mock).mockReturnValue({
+                    hasPromise: () => true,
+                    enablePromiseRejectionTracker: tracker,
+                });
+            }
+            handler.captureUnhandledPromiseRejections(client);
+            options = tracker.mock.calls[0][0];
+        });
+
+        it('preserves error identity, classification, and rejection id', () => {
+            const error = new Error('rejected');
+            options.onUnhandled(42, error);
+            const report = send.mock.calls[0][0] as BacktraceReport;
+            expect(report.data).toBe(error);
+            expect(report.attributes['error.type']).toBe('Unhandled rejection');
+            expect(report.attributes['unhandledPromiseRejectionId']).toBe(42);
+            expect(report.classifiers).toContain('UnhandledPromiseRejection');
+            expect(report.skipFrames).toBe(0);
+            expect(options.allRejections).toBe(true);
+        });
+
+        it.each([
+            ['string', 'rejected', 'rejected'],
+            ['number', 42, '42'],
+            ['boolean', false, 'false'],
+            ['null', null, 'null'],
+            ['undefined', undefined, 'Unknown'],
+            ['symbol', Symbol('reason'), 'Symbol(reason)'],
+            ['object', { reason: 'bad request' }, 'bad request'],
+        ])('reports %s rejection values', (_label, value, expected) => {
+            expect(() => options.onUnhandled(7, value)).not.toThrow();
+            expect(send).toHaveBeenCalledTimes(1);
+            const report = send.mock.calls[0][0] as BacktraceReport;
+            expect(report.data).toEqual(expect.stringContaining(expected as string));
+            // BacktraceReport adds the constructor frame to the helper/callback frames.
+            expect(report.skipFrames).toBe(3);
+        });
+
+        it('reports circular objects and objects with throwing formatters safely', () => {
+            const circular: { self?: unknown } = {};
+            circular.self = circular;
+            options.onUnhandled(1, circular);
+            expect((send.mock.calls[0][0] as BacktraceReport).data).toContain('[Circular]');
+            options.onUnhandled(2, {
+                toJSON() {
+                    throw new Error('formatter failure');
+                },
+            });
+            expect((send.mock.calls[1][0] as BacktraceReport).data).toBe('<unformattable rejection>');
+        });
+
+        it('handles reporting and logging failures without throwing', () => {
+            send.mockImplementation(() => {
+                throw new Error('report construction failure');
+            });
+            warn.mockImplementation(() => {
+                throw new Error('logger failure');
+            });
+            expect(() => options.onUnhandled(1, new Error('rejected'))).not.toThrow();
+            expect(send).toHaveBeenCalledTimes(1);
+        });
+
+        it('observes rejected reporting promises', async () => {
+            send.mockRejectedValue(new Error('transport failure'));
+            options.onUnhandled(1, new Error('rejected'));
+            expect(send).toHaveBeenCalledTimes(1);
+            await new Promise((resolve) => setImmediate(resolve));
+        });
+
+        it('does not recursively report rejection callbacks invoked during send', () => {
+            send.mockImplementationOnce(() => options.onUnhandled(2, new Error('nested rejection')));
+            options.onUnhandled(1, new Error('rejected'));
+            expect(send).toHaveBeenCalledTimes(1);
+            options.onUnhandled(3, new Error('later rejection'));
+            expect(send).toHaveBeenCalledTimes(2);
+        });
+
+        it('does not register again or disable another tracker during disposal', () => {
+            handler.captureUnhandledPromiseRejections(client);
+            expect(tracker).toHaveBeenCalledTimes(1);
+            handler.dispose();
+            options.onUnhandled(1, new Error('after disposal'));
+            expect(send).not.toHaveBeenCalled();
+            expect(rejectionTracking.disable).not.toHaveBeenCalled();
+            expect(tracker).toHaveBeenCalledTimes(1);
+        });
+    });
+
+    it('allows retrying promise tracker installation after failure', () => {
+        rejectionTracking.enable.mockImplementationOnce(() => {
+            throw new Error('tracker unavailable');
+        });
+        expect(() => handler.captureUnhandledPromiseRejections(client)).toThrow('tracker unavailable');
+        handler.captureUnhandledPromiseRejections(client);
+        expect(rejectionTracking.enable).toHaveBeenCalledTimes(2);
+        rejectionTracking.enable.mock.calls[1][0].onUnhandled(1, 'rejected');
+        expect(send).toHaveBeenCalledTimes(1);
+    });
+
+    it('uses the fallback when Hermes does not supply native promises', () => {
+        const hermesTracker = jest.fn();
+        (hermes as jest.Mock).mockReturnValue({
+            hasPromise: () => false,
+            enablePromiseRejectionTracker: hermesTracker,
+        });
+        handler.captureUnhandledPromiseRejections(client);
+        expect(hermesTracker).not.toHaveBeenCalled();
+        expect(rejectionTracking.enable).toHaveBeenCalledTimes(1);
+    });
+
+    describe('fallback development warnings', () => {
+        let options: RejectionOptions;
+
+        beforeEach(() => {
+            Object.defineProperty(globalThis, '__DEV__', { configurable: true, value: true });
+            handler.captureUnhandledPromiseRejections(client);
+            options = rejectionTracking.enable.mock.calls[0][0];
+        });
+
+        it('preserves readable Error stacks and handled-rejection warnings', () => {
+            const error = new Error('rejected');
+            options.onUnhandled(2, error);
+            expect(warn).toHaveBeenCalledWith(
+                `Possible Unhandled Promise Rejection (id: 2):\nError: rejected\n${error.stack}`,
+            );
+            options.onHandled?.(2);
+            expect(warn).toHaveBeenCalledWith(expect.stringContaining('Promise Rejection Handled (id: 2)'));
+        });
+
+        it('formats arbitrary rejection values and keeps warnings after disposal', () => {
+            handler.dispose();
+            options.onUnhandled(2, { reason: 'rejected' });
+            expect(warn).toHaveBeenCalledWith(expect.stringContaining('rejected'));
+            expect(send).not.toHaveBeenCalled();
+        });
+
+        it('does not throw for errors with throwing stack getters or an instrumented console', () => {
+            const error = new Error('rejected');
+            Object.defineProperty(error, 'stack', {
+                get() {
+                    throw new Error('stack getter failed');
+                },
+            });
+            expect(() => options.onUnhandled(1, error)).not.toThrow();
+            warn.mockImplementation(() => {
+                throw new Error('console failure');
+            });
+            expect(() => options.onUnhandled(2, 'rejected')).not.toThrow();
+            expect(() => options.onHandled?.(2)).not.toThrow();
+        });
+
+        it('does not recurse when the warning logger invokes rejection callbacks', () => {
+            warn.mockImplementation(() => options.onUnhandled(2, 'logger rejection'));
+            expect(() => options.onUnhandled(1, 'rejected')).not.toThrow();
+            expect(warn).toHaveBeenCalledTimes(1);
+        });
+
+        it('omits React Native warnings in production', () => {
+            Object.defineProperty(globalThis, '__DEV__', { configurable: true, value: false });
+            options.onUnhandled(1, 'rejected');
+            options.onHandled?.(1);
+            expect(warn).not.toHaveBeenCalled();
+        });
+    });
+});
diff --git a/packages/react-native/tests/scripts/generateAgentVersionTests.spec.ts b/packages/react-native/tests/scripts/generateAgentVersionTests.spec.ts
new file mode 100644
index 00000000..55df3c58
--- /dev/null
+++ b/packages/react-native/tests/scripts/generateAgentVersionTests.spec.ts
@@ -0,0 +1,61 @@
+import { spawnSync } from 'child_process';
+import fs from 'fs';
+import os from 'os';
+import path from 'path';
+
+describe('agent version generation', () => {
+    let root: string;
+    let script: string;
+    let target: string;
+
+    beforeEach(() => {
+        root = fs.mkdtempSync(path.join(os.tmpdir(), 'backtrace-agent-version-'));
+        script = path.join(root, 'scripts/generate-agent-version.cjs');
+        target = path.join(root, 'src/common/agentVersion.ts');
+        fs.mkdirSync(path.dirname(script));
+        fs.copyFileSync(path.resolve(__dirname, '../../scripts/generate-agent-version.cjs'), script);
+        fs.writeFileSync(path.join(root, 'package.json'), JSON.stringify({ version: '1.2.3-rc.4' }));
+    });
+
+    afterEach(() => {
+        fs.rmSync(root, { recursive: true, force: true });
+    });
+
+    const run = (...args: string[]) => spawnSync(process.execPath, [script, ...args], { encoding: 'utf8' });
+
+    it('generates a version module and leaves matching files untouched', () => {
+        expect(run().status).toBe(0);
+        expect(fs.readFileSync(target, 'utf8')).toContain("export const agentVersion = '1.2.3-rc.4';");
+        const before = fs.statSync(target).mtimeMs;
+        expect(run().status).toBe(0);
+        expect(run('--check').status).toBe(0);
+        expect(fs.statSync(target).mtimeMs).toBe(before);
+    });
+
+    it('detects missing and stale modules without changing them in check mode', () => {
+        expect(run('--check').status).not.toBe(0);
+        expect(fs.existsSync(target)).toBe(false);
+        expect(run().status).toBe(0);
+        const before = fs.readFileSync(target, 'utf8');
+        fs.writeFileSync(path.join(root, 'package.json'), JSON.stringify({ version: '1.2.3' }));
+        expect(run('--check').status).not.toBe(0);
+        expect(fs.readFileSync(target, 'utf8')).toBe(before);
+        expect(run().status).toBe(0);
+        expect(fs.readFileSync(target, 'utf8')).toContain("export const agentVersion = '1.2.3';");
+    });
+
+    it.each([undefined, 123, "1.2.3'; throw new Error('injected')", 'not-a-version'])(
+        'rejects unsafe or missing version metadata: %s',
+        (version) => {
+            fs.writeFileSync(path.join(root, 'package.json'), JSON.stringify({ version }));
+            expect(run().status).not.toBe(0);
+            expect(fs.existsSync(target)).toBe(false);
+        },
+    );
+
+    it('rejects unknown arguments without writing a module', () => {
+        expect(run('--unknown').status).not.toBe(0);
+        expect(run('--check', '--check').status).not.toBe(0);
+        expect(fs.existsSync(target)).toBe(false);
+    });
+});
diff --git a/packages/sdk-core/package.json b/packages/sdk-core/package.json
index 93067401..dedbb831 100644
--- a/packages/sdk-core/package.json
+++ b/packages/sdk-core/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@backtrace/sdk-core",
-    "version": "0.8.3",
+    "version": "0.8.4-rc",
     "description": "Backtrace-JavaScript SDK core library",
     "main": "lib/bundle.cjs",
     "module": "lib/bundle.mjs",
@@ -13,7 +13,7 @@
         "lint": "eslint . --ext .ts",
         "watch": "concurrently \"tsc -p tsconfig.build.json --noEmit --watch\" \"rollup -c rollup.config.mjs --watch\"",
         "test": "cross-env NODE_OPTIONS=\"$NODE_OPTIONS --experimental-vm-modules\" NODE_NO_WARNINGS=1 NODE_ENV=test jest",
-        "prepublishOnly": "npm run clean && cross-env NODE_ENV=production npm run build"
+        "prepack": "npm run clean && cross-env NODE_ENV=production npm run build"
     },
     "repository": {
         "type": "git",
@@ -45,5 +45,9 @@
         "rollup": "^4.21.0",
         "ts-jest": "^29.1.0",
         "typescript": "^5.0.4"
+    },
+    "publishConfig": {
+        "access": "public",
+        "tag": "rc"
     }
-}
\ No newline at end of file
+}
diff --git a/packages/sdk-core/src/BacktraceCoreClient.ts b/packages/sdk-core/src/BacktraceCoreClient.ts
index c4581037..672210f5 100644
--- a/packages/sdk-core/src/BacktraceCoreClient.ts
+++ b/packages/sdk-core/src/BacktraceCoreClient.ts
@@ -368,7 +368,9 @@ export abstract class BacktraceCoreClient<
             }
         }
 
-        BacktraceCoreClient.destroy();
+        if (BacktraceCoreClient._instance === this) {
+            BacktraceCoreClient.destroy();
+        }
     }
 
     protected addModule<T extends BacktraceModule>(module: T): void;
diff --git a/packages/sdk-core/tests/client/clientTests.spec.ts b/packages/sdk-core/tests/client/clientTests.spec.ts
index 3e6d3f65..6b3ebc82 100644
--- a/packages/sdk-core/tests/client/clientTests.spec.ts
+++ b/packages/sdk-core/tests/client/clientTests.spec.ts
@@ -2,11 +2,45 @@ import { BacktraceReport, BacktraceStringAttachment } from '../../src/index.js';
 import { AttributeManager } from '../../src/modules/attribute/AttributeManager.js';
 import { BacktraceTestClient } from '../mocks/BacktraceTestClient.js';
 import { testHttpClient } from '../mocks/testHttpClient.js';
+
+class LifecycleTestClient extends BacktraceTestClient {
+    public static get instance() {
+        return this._instance;
+    }
+}
+
 describe('Client tests', () => {
     afterEach(() => {
         jest.restoreAllMocks();
     });
 
+    describe('Disposal tests', () => {
+        it('Should clear the current core instance when it is disposed', () => {
+            const client = BacktraceTestClient.buildFakeClient({ breadcrumbs: { enable: false } });
+
+            expect(LifecycleTestClient.instance).toBe(client);
+            client.dispose();
+
+            expect(client.enabled).toBe(false);
+            expect(LifecycleTestClient.instance).toBeUndefined();
+        });
+
+        it('Should retain a newer core instance when an older client is disposed', () => {
+            const first = BacktraceTestClient.buildFakeClient({ breadcrumbs: { enable: false } });
+            const replacement = BacktraceTestClient.buildFakeClient({ breadcrumbs: { enable: false } });
+
+            try {
+                first.dispose();
+
+                expect(first.enabled).toBe(false);
+                expect(LifecycleTestClient.instance).toBe(replacement);
+                expect(replacement.enabled).toBe(true);
+            } finally {
+                replacement.dispose();
+            }
+        });
+    });
+
     describe('Send tests', () => {
         const client = BacktraceTestClient.buildFakeClient();
 
diff --git a/packages/session-replay/package.json b/packages/session-replay/package.json
index 5dc4a7bc..835f97f1 100644
--- a/packages/session-replay/package.json
+++ b/packages/session-replay/package.json
@@ -13,7 +13,7 @@
         "format": "prettier --write '**/*.ts'",
         "lint": "eslint . --ext .ts",
         "watch": "concurrently \"tsc -p tsconfig.build.json --noEmit --watch\" \"rollup -c rollup.config.mjs --watch\"",
-        "prepublishOnly": "npm -w ../sdk-core run prepublishOnly && npm run clean && cross-env NODE_ENV=production npm run build",
+        "prepublishOnly": "npm -w ../sdk-core run prepack && npm run clean && cross-env NODE_ENV=production npm run build",
         "test": "cross-env NODE_OPTIONS=\"$NODE_OPTIONS --experimental-vm-modules\" NODE_NO_WARNINGS=1 NODE_ENV=test jest"
     },
     "repository": {
@@ -31,7 +31,7 @@
     "homepage": "https://github.com/backtrace-labs/backtrace-javascript#readme",
     "dependencies": {
         "rrweb": "^2.0.0-alpha.15",
-        "@backtrace/sdk-core": "0.8.3"
+        "@backtrace/sdk-core": "0.8.3 || 0.8.4-rc"
     },
     "devDependencies": {
         "@rollup/plugin-commonjs": "^26.0.1",
@@ -48,4 +48,4 @@
         "ts-jest": "^29.1.0",
         "typescript": "^5.0.4"
     }
-}
\ No newline at end of file
+}