From 1804066f6762da3a157432ea7ec85a92d730b1b1 Mon Sep 17 00:00:00 2001
From: Tanner Linsley <tannerlinsley@gmail.com>
Date: Tue, 27 Oct 2026 22:21:46 -0600
Subject: [PATCH 1/3] fix: adopt inline metadata during document hydration

---
 .changeset/hydration-inline-metadata.md       |   5 +
 .../hydration-inline-metadata/README.md       |  13 +
 .../router-framework-react-development.json   |  41 +
 .../router-framework-react-production.json    |  41 +
 .../router-framework-redact-development.json  |  40 +
 .../router-framework-redact-production.json   |  41 +
 .../router-framework-redact-production.json   |  42 +
 .../hydration-inline-metadata/size-delta.json | 767 ++++++++++++++++++
 .../redact/src/dom/features/hydration/full.ts |  23 +-
 tests/document-hydration.test.tsx             |  27 +
 10 files changed, 1028 insertions(+), 12 deletions(-)
 create mode 100644 .changeset/hydration-inline-metadata.md
 create mode 100644 benchmarks/results/hydration-inline-metadata/README.md
 create mode 100644 benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json
 create mode 100644 benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json
 create mode 100644 benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json
 create mode 100644 benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json
 create mode 100644 benchmarks/results/hydration-inline-metadata/before/router-framework-redact-production.json
 create mode 100644 benchmarks/results/hydration-inline-metadata/size-delta.json

diff --git a/.changeset/hydration-inline-metadata.md b/.changeset/hydration-inline-metadata.md
new file mode 100644
index 0000000..3826e82
--- /dev/null
+++ b/.changeset/hydration-inline-metadata.md
@@ -0,0 +1,5 @@
+---
+'@tanstack/redact': patch
+---
+
+Adopt server-rendered metadata that remains in the document body during hydration. This prevents React Router's production module-preload links from triggering body replacement and preserves the existing interactive DOM.
diff --git a/benchmarks/results/hydration-inline-metadata/README.md b/benchmarks/results/hydration-inline-metadata/README.md
new file mode 100644
index 0000000..6221772
--- /dev/null
+++ b/benchmarks/results/hydration-inline-metadata/README.md
@@ -0,0 +1,13 @@
+# Inline metadata hydration fix
+
+Base: main commit `89f2bfc58135fdf5fcb29af4c346680e0eda2763`.
+
+Before the change, the added document-hydration regression fails with `expected <script> but found LINK`. The React Router 8.5.0 production fixture also replaces the original counter button. After the change, native React and Redact both preserve it in development and production. The fixture also checks state, server form actions, client navigation, and browser history. Saved JSON records contain the checks and DOM identity results.
+
+The only application integration change is the Vite plugin's packageRoots option pointing to this built worktree package. No React Router source is patched.
+
+Validation uses Node 24.22.0 from .nvmrc: 1,966 tests passed, 91 skipped; type checks, build verification and all original size limits passed. No size allowance was added.
+
+The final implementation shares the metadata props, reuses the cursor's scan for another parent, and reads the parent's localName directly. These remove duplicated lookup work while preserving the fallback to metadata emitted in place.
+
+The size comparison rebuilds baseline and fixed sources at the same checkout path with the same toolchain. The built default Vite client stays at 23,446 gzip bytes and shrinks by 50 minified bytes. The full client shrinks by 4 gzip bytes and 47 minified bytes. Source bundles shrink by 6 and 7 gzip bytes respectively. Brotli is recorded separately and increases by 62 bytes for the default built bundle; the repository's enforced bundle metric is gzip.
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json
new file mode 100644
index 0000000..ec5b315
--- /dev/null
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json
@@ -0,0 +1,41 @@
+{
+  "name": "router-framework",
+  "runtime": "react",
+  "mode": "development",
+  "bundler": null,
+  "node": "v24.22.0",
+  "configSha256": "640a2e8b1960c8587b8ca96be25e14f23b37ab28be9963bea7494e5f05a9a681",
+  "passed": true,
+  "checks": [
+    "SSR HTML",
+    "server DOM adoption",
+    "browser runtime identity",
+    "interactive state",
+    "server form action",
+    "client navigation and history",
+    "no uncaught browser errors"
+  ],
+  "browser": "156.0.8078.4",
+  "started": "2026-10-28T04:21:20.755Z",
+  "browserErrors": [],
+  "consoleErrors": [],
+  "hydration": {
+    "captured": true,
+    "same": true,
+    "originalConnected": true,
+    "original": "<button id=\"counter\">Count <!-- -->0</button>",
+    "current": "<button id=\"counter\">Count <!-- -->0</button>"
+  },
+  "identity": {
+    "version": "19.3.1",
+    "elementKeys": [
+      "$$typeof",
+      "type",
+      "key",
+      "props",
+      "_owner",
+      "_store"
+    ]
+  },
+  "finished": "2026-10-28T04:21:22.255Z"
+}
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json
new file mode 100644
index 0000000..918d2ed
--- /dev/null
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json
@@ -0,0 +1,41 @@
+{
+  "name": "router-framework",
+  "runtime": "react",
+  "mode": "production",
+  "bundler": null,
+  "node": "v24.22.0",
+  "configSha256": "640a2e8b1960c8587b8ca96be25e14f23b37ab28be9963bea7494e5f05a9a681",
+  "passed": true,
+  "checks": [
+    "production build",
+    "SSR HTML",
+    "server DOM adoption",
+    "browser runtime identity",
+    "interactive state",
+    "server form action",
+    "client navigation and history",
+    "no uncaught browser errors"
+  ],
+  "browser": "156.0.8078.4",
+  "started": "2026-10-28T04:21:22.255Z",
+  "browserErrors": [],
+  "consoleErrors": [],
+  "hydration": {
+    "captured": true,
+    "same": true,
+    "originalConnected": true,
+    "original": "<button id=\"counter\">Count <!-- -->0</button>",
+    "current": "<button id=\"counter\">Count <!-- -->0</button>"
+  },
+  "identity": {
+    "version": "19.3.1",
+    "elementKeys": [
+      "$$typeof",
+      "type",
+      "key",
+      "ref",
+      "props"
+    ]
+  },
+  "finished": "2026-10-28T04:21:23.712Z"
+}
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json
new file mode 100644
index 0000000..f2c909b
--- /dev/null
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json
@@ -0,0 +1,40 @@
+{
+  "name": "router-framework",
+  "runtime": "redact",
+  "mode": "development",
+  "bundler": null,
+  "node": "v24.22.0",
+  "configSha256": "640a2e8b1960c8587b8ca96be25e14f23b37ab28be9963bea7494e5f05a9a681",
+  "passed": true,
+  "checks": [
+    "SSR HTML",
+    "server DOM adoption",
+    "browser runtime identity",
+    "interactive state",
+    "server form action",
+    "client navigation and history",
+    "no uncaught browser errors"
+  ],
+  "browser": "156.0.8078.4",
+  "started": "2026-10-28T04:21:23.713Z",
+  "browserErrors": [],
+  "consoleErrors": [],
+  "hydration": {
+    "captured": true,
+    "same": true,
+    "originalConnected": true,
+    "original": "<button id=\"counter\">Count <!-- -->0</button>",
+    "current": "<button id=\"counter\">Count <!-- -->0</button>"
+  },
+  "identity": {
+    "version": "19.2.3",
+    "elementKeys": [
+      "$$typeof",
+      "type",
+      "key",
+      "ref",
+      "props"
+    ]
+  },
+  "finished": "2026-10-28T04:21:25.057Z"
+}
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json
new file mode 100644
index 0000000..7bd1ebe
--- /dev/null
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json
@@ -0,0 +1,41 @@
+{
+  "name": "router-framework",
+  "runtime": "redact",
+  "mode": "production",
+  "bundler": null,
+  "node": "v24.22.0",
+  "configSha256": "640a2e8b1960c8587b8ca96be25e14f23b37ab28be9963bea7494e5f05a9a681",
+  "passed": true,
+  "checks": [
+    "production build",
+    "SSR HTML",
+    "server DOM adoption",
+    "browser runtime identity",
+    "interactive state",
+    "server form action",
+    "client navigation and history",
+    "no uncaught browser errors"
+  ],
+  "browser": "156.0.8078.4",
+  "started": "2026-10-28T04:21:25.057Z",
+  "browserErrors": [],
+  "consoleErrors": [],
+  "hydration": {
+    "captured": true,
+    "same": true,
+    "originalConnected": true,
+    "original": "<button id=\"counter\">Count <!-- -->0</button>",
+    "current": "<button id=\"counter\">Count <!-- -->0</button>"
+  },
+  "identity": {
+    "version": "19.2.3",
+    "elementKeys": [
+      "$$typeof",
+      "type",
+      "key",
+      "ref",
+      "props"
+    ]
+  },
+  "finished": "2026-10-28T04:21:26.487Z"
+}
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/before/router-framework-redact-production.json b/benchmarks/results/hydration-inline-metadata/before/router-framework-redact-production.json
new file mode 100644
index 0000000..ee2dfb9
--- /dev/null
+++ b/benchmarks/results/hydration-inline-metadata/before/router-framework-redact-production.json
@@ -0,0 +1,42 @@
+{
+  "name": "router-framework",
+  "runtime": "redact",
+  "mode": "production",
+  "bundler": null,
+  "node": "v26.3.1",
+  "configSha256": "640a2e8b1960c8587b8ca96be25e14f23b37ab28be9963bea7494e5f05a9a681",
+  "passed": false,
+  "checks": [
+    "production build",
+    "SSR HTML",
+    "browser runtime identity",
+    "interactive state",
+    "server form action",
+    "client navigation and history",
+    "no uncaught browser errors"
+  ],
+  "browser": "156.0.8078.4",
+  "started": "2026-10-28T03:56:16.778Z",
+  "browserErrors": [],
+  "consoleErrors": [],
+  "hydration": {
+    "captured": true,
+    "same": false,
+    "originalConnected": false,
+    "original": "<button id=\"counter\">Count <!-- -->0</button>",
+    "current": "<button id=\"counter\">Count 0</button>"
+  },
+  "identity": {
+    "version": "19.2.3",
+    "elementKeys": [
+      "$$typeof",
+      "type",
+      "key",
+      "ref",
+      "props"
+    ]
+  },
+  "error": "AssertionError [ERR_ASSERTION]: Server DOM was replaced during hydration\n    at file:///Users/tannerlinsley/GitHub/redact/scripts/framework-comparison/run.mjs:281:18\n    at runNextTicks (node:internal/process/task_queues:65:5)\n    at process.processImmediate (node:internal/timers:472:9)",
+  "body": "Other page\nHome",
+  "finished": "2026-10-28T03:56:18.814Z"
+}
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/size-delta.json b/benchmarks/results/hydration-inline-metadata/size-delta.json
new file mode 100644
index 0000000..a8766f4
--- /dev/null
+++ b/benchmarks/results/hydration-inline-metadata/size-delta.json
@@ -0,0 +1,767 @@
+{
+  "node": "v24.22.0",
+  "base": "89f2bfc58135fdf5fcb29af4c346680e0eda2763",
+  "method": "Same checkout and build path, baseline hydration source restored from HEAD, then fixed source rebuilt",
+  "rows": [
+    {
+      "tree": "src",
+      "name": "redact",
+      "before": {
+        "name": "redact",
+        "tree": "src",
+        "min": 7042,
+        "gz": 2759,
+        "br": 2536
+      },
+      "after": {
+        "name": "redact",
+        "tree": "src",
+        "min": 7042,
+        "gz": 2759,
+        "br": 2536
+      },
+      "gzipDelta": 0,
+      "minDelta": 0
+    },
+    {
+      "tree": "src",
+      "name": "redact/jsx-runtime",
+      "before": {
+        "name": "redact/jsx-runtime",
+        "tree": "src",
+        "min": 247,
+        "gz": 190,
+        "br": 180
+      },
+      "after": {
+        "name": "redact/jsx-runtime",
+        "tree": "src",
+        "min": 247,
+        "gz": 190,
+        "br": 180
+      },
+      "gzipDelta": 0,
+      "minDelta": 0
+    },
+    {
+      "tree": "src",
+      "name": "redact/dom",
+      "before": {
+        "name": "redact/dom",
+        "tree": "src",
+        "min": 57964,
+        "gz": 22971,
+        "br": 20897
+      },
+      "after": {
+        "name": "redact/dom",
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+        "br": 20906
+      },
+      "gzipDelta": 0,
+      "minDelta": -47
+    },
+    {
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+        "gz": 25111,
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+      },
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+      },
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+    },
+    {
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+      },
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+      },
+      "gzipDelta": 0,
+      "minDelta": 0
+    },
+    {
+      "tree": "src",
+      "name": "client total",
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+        "name": "client total",
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+        "gz": 28012,
+        "br": 25432
+      },
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+      "minDelta": -47
+    },
+    {
+      "tree": "src",
+      "name": "client total (default Vite)",
+      "before": {
+        "name": "client total (default Vite)",
+        "tree": "src",
+        "min": 61263,
+        "gz": 23447,
+        "br": 21351
+      },
+      "after": {
+        "name": "client total (default Vite)",
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+        "gz": 23441,
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+      },
+      "gzipDelta": -6,
+      "minDelta": -50
+    },
+    {
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+      "gzipDelta": -4,
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+      },
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+    },
+    {
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+      "minDelta": -45
+    },
+    {
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+      },
+      "gzipDelta": -3,
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+    {
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+      },
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+      "minDelta": -47
+    },
+    {
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+      },
+      "gzipDelta": 5,
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+    {
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+    {
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+        "gz": 22578,
+        "br": 20486
+      },
+      "gzipDelta": 0,
+      "minDelta": 0
+    },
+    {
+      "tree": "src",
+      "name": "redact/dom-client (nano)",
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+        "name": "redact/dom-client (nano)",
+        "tree": "src",
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+        "gz": 12532,
+        "br": 11447
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+        "br": 11447
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+      "minDelta": 0
+    },
+    {
+      "tree": "dist",
+      "name": "redact",
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+        "name": "redact",
+        "tree": "dist",
+        "min": 7042,
+        "gz": 2759,
+        "br": 2510
+      },
+      "after": {
+        "name": "redact",
+        "tree": "dist",
+        "min": 7042,
+        "gz": 2759,
+        "br": 2510
+      },
+      "gzipDelta": 0,
+      "minDelta": 0
+    },
+    {
+      "tree": "dist",
+      "name": "redact/jsx-runtime",
+      "before": {
+        "name": "redact/jsx-runtime",
+        "tree": "dist",
+        "min": 247,
+        "gz": 190,
+        "br": 172
+      },
+      "after": {
+        "name": "redact/jsx-runtime",
+        "tree": "dist",
+        "min": 247,
+        "gz": 190,
+        "br": 172
+      },
+      "gzipDelta": 0,
+      "minDelta": 0
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom",
+      "before": {
+        "name": "redact/dom",
+        "tree": "dist",
+        "min": 57966,
+        "gz": 22966,
+        "br": 20906
+      },
+      "after": {
+        "name": "redact/dom",
+        "tree": "dist",
+        "min": 57919,
+        "gz": 22956,
+        "br": 20896
+      },
+      "gzipDelta": -10,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client",
+      "before": {
+        "name": "redact/dom-client",
+        "tree": "dist",
+        "min": 64307,
+        "gz": 25095,
+        "br": 22718
+      },
+      "after": {
+        "name": "redact/dom-client",
+        "tree": "dist",
+        "min": 64260,
+        "gz": 25095,
+        "br": 22752
+      },
+      "gzipDelta": 0,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/server",
+      "before": {
+        "name": "redact/server",
+        "tree": "dist",
+        "min": 22803,
+        "gz": 8975,
+        "br": 8104
+      },
+      "after": {
+        "name": "redact/server",
+        "tree": "dist",
+        "min": 22803,
+        "gz": 8975,
+        "br": 8104
+      },
+      "gzipDelta": 0,
+      "minDelta": 0
+    },
+    {
+      "tree": "dist",
+      "name": "client total",
+      "before": {
+        "name": "client total",
+        "tree": "dist",
+        "min": 72506,
+        "gz": 28008,
+        "br": 25414
+      },
+      "after": {
+        "name": "client total",
+        "tree": "dist",
+        "min": 72459,
+        "gz": 28004,
+        "br": 25416
+      },
+      "gzipDelta": -4,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "client total (default Vite)",
+      "before": {
+        "name": "client total (default Vite)",
+        "tree": "dist",
+        "min": 61263,
+        "gz": 23446,
+        "br": 21363
+      },
+      "after": {
+        "name": "client total (default Vite)",
+        "tree": "dist",
+        "min": 61213,
+        "gz": 23446,
+        "br": 21425
+      },
+      "gzipDelta": 0,
+      "minDelta": -50
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (activity=stub)",
+      "before": {
+        "name": "redact/dom-client (activity=stub)",
+        "tree": "dist",
+        "min": 62820,
+        "gz": 24691,
+        "br": 22361
+      },
+      "after": {
+        "name": "redact/dom-client (activity=stub)",
+        "tree": "dist",
+        "min": 62773,
+        "gz": 24688,
+        "br": 22376
+      },
+      "gzipDelta": -3,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (fragmentRefs=stub)",
+      "before": {
+        "name": "redact/dom-client (fragmentRefs=stub)",
+        "tree": "dist",
+        "min": 58181,
+        "gz": 22988,
+        "br": 20863
+      },
+      "after": {
+        "name": "redact/dom-client (fragmentRefs=stub)",
+        "tree": "dist",
+        "min": 58134,
+        "gz": 22989,
+        "br": 20879
+      },
+      "gzipDelta": 1,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (viewTransitions=stub)",
+      "before": {
+        "name": "redact/dom-client (viewTransitions=stub)",
+        "tree": "dist",
+        "min": 53073,
+        "gz": 20488,
+        "br": 18736
+      },
+      "after": {
+        "name": "redact/dom-client (viewTransitions=stub)",
+        "tree": "dist",
+        "min": 53028,
+        "gz": 20487,
+        "br": 18734
+      },
+      "gzipDelta": -1,
+      "minDelta": -45
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (portal=stub)",
+      "before": {
+        "name": "redact/dom-client (portal=stub)",
+        "tree": "dist",
+        "min": 64249,
+        "gz": 25077,
+        "br": 22740
+      },
+      "after": {
+        "name": "redact/dom-client (portal=stub)",
+        "tree": "dist",
+        "min": 64202,
+        "gz": 25076,
+        "br": 22771
+      },
+      "gzipDelta": -1,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (context=stub)",
+      "before": {
+        "name": "redact/dom-client (context=stub)",
+        "tree": "dist",
+        "min": 63528,
+        "gz": 24833,
+        "br": 22525
+      },
+      "after": {
+        "name": "redact/dom-client (context=stub)",
+        "tree": "dist",
+        "min": 63481,
+        "gz": 24833,
+        "br": 22543
+      },
+      "gzipDelta": 0,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (suspense=stub)",
+      "before": {
+        "name": "redact/dom-client (suspense=stub)",
+        "tree": "dist",
+        "min": 58727,
+        "gz": 23110,
+        "br": 20929
+      },
+      "after": {
+        "name": "redact/dom-client (suspense=stub)",
+        "tree": "dist",
+        "min": 58680,
+        "gz": 23118,
+        "br": 20935
+      },
+      "gzipDelta": 8,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (memo=stub)",
+      "before": {
+        "name": "redact/dom-client (memo=stub)",
+        "tree": "dist",
+        "min": 64030,
+        "gz": 25001,
+        "br": 22657
+      },
+      "after": {
+        "name": "redact/dom-client (memo=stub)",
+        "tree": "dist",
+        "min": 63983,
+        "gz": 24999,
+        "br": 22660
+      },
+      "gzipDelta": -2,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (forwardRef=stub)",
+      "before": {
+        "name": "redact/dom-client (forwardRef=stub)",
+        "tree": "dist",
+        "min": 64274,
+        "gz": 25074,
+        "br": 22721
+      },
+      "after": {
+        "name": "redact/dom-client (forwardRef=stub)",
+        "tree": "dist",
+        "min": 64227,
+        "gz": 25072,
+        "br": 22733
+      },
+      "gzipDelta": -2,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (lazy=stub)",
+      "before": {
+        "name": "redact/dom-client (lazy=stub)",
+        "tree": "dist",
+        "min": 64286,
+        "gz": 25085,
+        "br": 22738
+      },
+      "after": {
+        "name": "redact/dom-client (lazy=stub)",
+        "tree": "dist",
+        "min": 64239,
+        "gz": 25082,
+        "br": 22730
+      },
+      "gzipDelta": -3,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (classComponents=stub)",
+      "before": {
+        "name": "redact/dom-client (classComponents=stub)",
+        "tree": "dist",
+        "min": 62696,
+        "gz": 24565,
+        "br": 22286
+      },
+      "after": {
+        "name": "redact/dom-client (classComponents=stub)",
+        "tree": "dist",
+        "min": 62649,
+        "gz": 24557,
+        "br": 22276
+      },
+      "gzipDelta": -8,
+      "minDelta": -47
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (hydration=stub)",
+      "before": {
+        "name": "redact/dom-client (hydration=stub)",
+        "tree": "dist",
+        "min": 57300,
+        "gz": 22576,
+        "br": 20524
+      },
+      "after": {
+        "name": "redact/dom-client (hydration=stub)",
+        "tree": "dist",
+        "min": 57300,
+        "gz": 22576,
+        "br": 20524
+      },
+      "gzipDelta": 0,
+      "minDelta": 0
+    },
+    {
+      "tree": "dist",
+      "name": "redact/dom-client (nano)",
+      "before": {
+        "name": "redact/dom-client (nano)",
+        "tree": "dist",
+        "min": 30307,
+        "gz": 12534,
+        "br": 11450
+      },
+      "after": {
+        "name": "redact/dom-client (nano)",
+        "tree": "dist",
+        "min": 30307,
+        "gz": 12534,
+        "br": 11450
+      },
+      "gzipDelta": 0,
+      "minDelta": 0
+    }
+  ]
+}
\ No newline at end of file
diff --git a/packages/redact/src/dom/features/hydration/full.ts b/packages/redact/src/dom/features/hydration/full.ts
index b5ebaba..6d4e94d 100644
--- a/packages/redact/src/dom/features/hydration/full.ts
+++ b/packages/redact/src/dom/features/hydration/full.ts
@@ -69,10 +69,10 @@ export class HydrationCursor {
      * name/property for meta, src for script). Non-matching nodes stay in
      * place so the SSR'd stylesheet/script order is preserved.
      */
-    head(tag: string, props: Record<string, any>): ChildNode | null {
+    head(tag: string, props: Record<string, any>, parent: Node = this.p): ChildNode | null {
         const target = tag.toLowerCase();
         const keyAttrs = HEAD_KEY_ATTRS[target];
-        let scan = this.p.firstChild;
+        let scan = parent.firstChild;
         while (scan) {
             if (scan.nodeType === 1 &&
                 (scan as Element).tagName.toLowerCase() === target &&
@@ -266,26 +266,26 @@ export function adoptHostDom(fiber: Fiber, parent: Fiber): boolean {
     if (!cursor)
         return false;
     const tag = (fiber.type as string).toLowerCase();
+    const props = fiber.v ?? {};
     const documentHeadParent = documentMetadataParent(fiber) || (cursor.p.nodeType === 9 && DOCUMENT_HEAD_TAGS.test(tag)
         ? (cursor.p as Document).head
         : null);
-    const parentEl = cursor.p as Element;
-    const parentTag = parentEl.nodeType === 1 ? (parentEl as Element).tagName.toLowerCase() : '';
+    const parentTag = (cursor.p as Element).localName;
     const isHeadish = parentTag === 'head' || parentTag === 'html' || !!documentHeadParent;
     let candidate: ChildNode | null;
-    if (documentHeadParent) {
-        // Adopt projected metadata from the same head used for client updates.
-        candidate = new HydrationCursor(documentHeadParent).head(tag, fiber.v ?? {});
-    }
-    else if (cursor.p.nodeType === 9 && tag !== 'html') {
-        candidate = new HydrationCursor((cursor.p as Document).body).head(tag, fiber.v ?? {});
+    if (documentHeadParent || cursor.p.nodeType === 9 && tag !== 'html') {
+        candidate = cursor.head(tag, props, documentHeadParent || (cursor.p as Document).body);
+        // Adopt metadata left at its original host position when the server
+        // has not hoisted it. Claiming it keeps later siblings aligned.
+        if (!candidate && documentHeadParent)
+            candidate = cursor.head(tag, props);
     }
     else if (isHeadish) {
         // Head/html children are position-insensitive — server may emit them in
         // a different order than the React tree (React 19 head hoisting, etc.).
         // Scan forward without removing non-matching nodes; match on attribute
         // signature so we don't adopt the wrong <link> and clobber its props.
-        candidate = cursor.head(tag, fiber.v ?? {});
+        candidate = cursor.head(tag, props);
     }
     else {
         candidate = cursor.take();
@@ -308,7 +308,6 @@ export function adoptHostDom(fiber: Fiber, parent: Fiber): boolean {
     }
     fiber.n = candidate;
     // Apply props (attach events, sync IDL props). Don't re-set existing attrs.
-    const props = fiber.v ?? {};
     const isSvg = tag === 'svg' ||
         ((candidate as Element).namespaceURI === 'http://www.w3.org/2000/svg' &&
             tag !== 'foreignobject');
diff --git a/tests/document-hydration.test.tsx b/tests/document-hydration.test.tsx
index 6d400ff..aaa87e6 100644
--- a/tests/document-hydration.test.tsx
+++ b/tests/document-hydration.test.tsx
@@ -84,6 +84,33 @@ describe('hydrateRoot(document, <html/>)', () => {
     expect(errors).toEqual([])
   })
 
+  it('adopts metadata emitted in the body without replacing following content', () => {
+    function App() {
+      return <html><head /><body>
+        <button id="counter">Count {0}</button>
+        <link rel="modulepreload" href="/entry.js" />
+        <link rel="modulepreload" href="/route.js" />
+        <script suppressHydrationWarning dangerouslySetInnerHTML={{ __html: ' ' }} />
+      </body></html>
+    }
+    const doc = buildDocumentFrom(renderToString(<App />))
+    const button = doc.querySelector('button')
+    const links = Array.from(doc.querySelectorAll('link'))
+    const script = doc.querySelector('script')
+    const errors: unknown[] = []
+    const root = hydrateRoot(doc as any, <App />, {
+      onRecoverableError: (error) => errors.push(error),
+    })
+    expect(errors).toEqual([])
+    expect(doc.querySelector('button')).toBe(button)
+    expect(Array.from(doc.querySelectorAll('link'))).toEqual(links)
+    expect(doc.querySelector('script')).toBe(script)
+    flushSync(() => root.render(<App />))
+    expect(doc.querySelector('button')).toBe(button)
+    expect(doc.querySelectorAll('link')).toHaveLength(2)
+    root.unmount()
+  })
+
   it('preserves foreign nodes after expected document body children', () => {
     function App() {
       return (

From 54288aef5ad682b1e0f7edfbeffaa267839e6d6d Mon Sep 17 00:00:00 2001
From: Tanner Linsley <tannerlinsley@gmail.com>
Date: Tue, 27 Oct 2026 23:00:36 -0600
Subject: [PATCH 2/3] perf: share metadata scans without increasing published
 bundles

---
 .../hydration-inline-metadata/README.md       |   6 +-
 .../router-framework-react-development.json   |   4 +-
 .../router-framework-react-production.json    |   4 +-
 .../router-framework-redact-development.json  |   4 +-
 .../router-framework-redact-production.json   |   4 +-
 .../react-compatibility-size.txt              |  77 ++++
 .../hydration-inline-metadata/size-delta.json | 340 ++++++++++--------
 .../redact/src/dom/features/hydration/full.ts | 105 ++----
 8 files changed, 313 insertions(+), 231 deletions(-)
 create mode 100644 benchmarks/results/hydration-inline-metadata/react-compatibility-size.txt

diff --git a/benchmarks/results/hydration-inline-metadata/README.md b/benchmarks/results/hydration-inline-metadata/README.md
index 6221772..0dc10c3 100644
--- a/benchmarks/results/hydration-inline-metadata/README.md
+++ b/benchmarks/results/hydration-inline-metadata/README.md
@@ -8,6 +8,8 @@ The only application integration change is the Vite plugin's packageRoots option
 
 Validation uses Node 24.22.0 from .nvmrc: 1,966 tests passed, 91 skipped; type checks, build verification and all original size limits passed. No size allowance was added.
 
-The final implementation shares the metadata props, reuses the cursor's scan for another parent, and reads the parent's localName directly. These remove duplicated lookup work while preserving the fallback to metadata emitted in place.
+The final implementation uses one metadata scan over element children and the optional original host location. It shares props, removes redundant tag normalization, and folds two single-use recovery helpers into their callers without changing recovery decisions.
 
-The size comparison rebuilds baseline and fixed sources at the same checkout path with the same toolchain. The built default Vite client stays at 23,446 gzip bytes and shrinks by 50 minified bytes. The full client shrinks by 4 gzip bytes and 47 minified bytes. Source bundles shrink by 6 and 7 gzip bytes respectively. Brotli is recorded separately and increases by 62 bytes for the default built bundle; the repository's enforced bundle metric is gzip.
+The size comparison rebuilds baseline and fixed sources at the same checkout path with the same toolchain. The built default Vite client shrinks from 23,446 to 23,385 gzip bytes (-61), by 233 minified bytes and 7 Brotli bytes. The full built client shrinks by 45 gzip bytes, 230 minified bytes and 13 Brotli bytes. Source default Brotli increases by 19 bytes, recorded separately; source gzip shrinks by 66 bytes.
+
+The independent React compatibility gate passes all 36 profile/entry/protocol comparisons with no growth in minified, gzip or Brotli output. It bundles published entries through Vite for React 18 and 19 in full, default and nano configurations. Its complete output is saved in react-compatibility-size.txt. No size budget or test was relaxed.
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json
index ec5b315..72eb62b 100644
--- a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json
@@ -16,7 +16,7 @@
     "no uncaught browser errors"
   ],
   "browser": "156.0.8078.4",
-  "started": "2026-10-28T04:21:20.755Z",
+  "started": "2026-10-28T05:00:22.199Z",
   "browserErrors": [],
   "consoleErrors": [],
   "hydration": {
@@ -37,5 +37,5 @@
       "_store"
     ]
   },
-  "finished": "2026-10-28T04:21:22.255Z"
+  "finished": "2026-10-28T05:00:24.006Z"
 }
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json
index 918d2ed..710dce7 100644
--- a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json
@@ -17,7 +17,7 @@
     "no uncaught browser errors"
   ],
   "browser": "156.0.8078.4",
-  "started": "2026-10-28T04:21:22.255Z",
+  "started": "2026-10-28T05:00:24.007Z",
   "browserErrors": [],
   "consoleErrors": [],
   "hydration": {
@@ -37,5 +37,5 @@
       "props"
     ]
   },
-  "finished": "2026-10-28T04:21:23.712Z"
+  "finished": "2026-10-28T05:00:25.472Z"
 }
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json
index f2c909b..eee8ba1 100644
--- a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json
@@ -16,7 +16,7 @@
     "no uncaught browser errors"
   ],
   "browser": "156.0.8078.4",
-  "started": "2026-10-28T04:21:23.713Z",
+  "started": "2026-10-28T05:00:25.473Z",
   "browserErrors": [],
   "consoleErrors": [],
   "hydration": {
@@ -36,5 +36,5 @@
       "props"
     ]
   },
-  "finished": "2026-10-28T04:21:25.057Z"
+  "finished": "2026-10-28T05:00:26.821Z"
 }
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json
index 7bd1ebe..0a74e12 100644
--- a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json
@@ -17,7 +17,7 @@
     "no uncaught browser errors"
   ],
   "browser": "156.0.8078.4",
-  "started": "2026-10-28T04:21:25.057Z",
+  "started": "2026-10-28T05:00:26.822Z",
   "browserErrors": [],
   "consoleErrors": [],
   "hydration": {
@@ -37,5 +37,5 @@
       "props"
     ]
   },
-  "finished": "2026-10-28T04:21:26.487Z"
+  "finished": "2026-10-28T05:00:28.258Z"
 }
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/react-compatibility-size.txt b/benchmarks/results/hydration-inline-metadata/react-compatibility-size.txt
new file mode 100644
index 0000000..9f80f8e
--- /dev/null
+++ b/benchmarks/results/hydration-inline-metadata/react-compatibility-size.txt
@@ -0,0 +1,77 @@
+
+> tanstack-react@0.0.0 test:compatibility:size /Users/tannerlinsley/.codex/worktrees/hydration-inline-metadata/redact
+> pnpm build && node scripts/test-react-compatibility-size.mjs
+
+
+> tanstack-react@0.0.0 build /Users/tannerlinsley/.codex/worktrees/hydration-inline-metadata/redact
+> node scripts/build.mjs && node scripts/verify-build.mjs
+
+Verified @cloudflare/vite-plugin@1.65.0, 13 owned files.
+Building @tanstack/redact: 112 entries...
+
+
+  ✓ @tanstack/redact
+
+Done.
+Build verification passed: 546 explicit module imports, 112 NodeNext declarations, 8 native import orders, 4 published feature bundles, 23 environment-sensitive modules, and 16 matching source/dist consumer bundles.
+{"consumerIifeGzip":[{"entry":"react/index","tree":"src","gzip":2927},{"entry":"react/index","tree":"dist","gzip":2927},{"entry":"dom/client","tree":"src","gzip":25280},{"entry":"dom/client","tree":"dist","gzip":25272},{"entry":"dom/index","tree":"src","gzip":23251},{"entry":"dom/index","tree":"dist","gzip":23233},{"entry":"server/index","tree":"src","gzip":9159},{"entry":"server/index","tree":"dist","gzip":9161}]}
+Verified @cloudflare/vite-plugin@1.65.0, 13 owned files.
+Building @tanstack/redact: 112 entries...
+
+
+  ✓ @tanstack/redact
+
+Done.
+Size baseline: 89f2bfc58135fdf5fcb29af4c346680e0eda2763
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+┌─────────┬───────────┬─────────────────────┬───────────┬──────┬──────┬────────┐
+│ (index) │ profile   │ entry               │ target    │ min  │ gzip │ brotli │
+├─────────┼───────────┼─────────────────────┼───────────┼──────┼──────┼────────┤
+│ 0       │ 'full'    │ 'react/index'       │ 'react19' │ 0    │ 0    │ 0      │
+│ 1       │ 'full'    │ 'react/index'       │ 'react18' │ 0    │ 0    │ 0      │
+│ 2       │ 'full'    │ 'react/jsx-runtime' │ 'react19' │ 0    │ 0    │ 0      │
+│ 3       │ 'full'    │ 'react/jsx-runtime' │ 'react18' │ 0    │ 0    │ 0      │
+│ 4       │ 'full'    │ 'dom/index'         │ 'react19' │ -218 │ -39  │ -48    │
+│ 5       │ 'full'    │ 'dom/index'         │ 'react18' │ -218 │ -38  │ -69    │
+│ 6       │ 'full'    │ 'dom/client'        │ 'react19' │ -216 │ -34  │ -23    │
+│ 7       │ 'full'    │ 'dom/client'        │ 'react18' │ -216 │ -39  │ -22    │
+│ 8       │ 'full'    │ 'server/index'      │ 'react19' │ 0    │ 0    │ 0      │
+│ 9       │ 'full'    │ 'server/index'      │ 'react18' │ 0    │ 0    │ 0      │
+│ 10      │ 'full'    │ 'client-total'      │ 'react19' │ -218 │ -18  │ -11    │
+│ 11      │ 'full'    │ 'client-total'      │ 'react18' │ -218 │ -14  │ -48    │
+│ 12      │ 'default' │ 'react/index'       │ 'react19' │ 0    │ 0    │ 0      │
+│ 13      │ 'default' │ 'react/index'       │ 'react18' │ 0    │ 0    │ 0      │
+│ 14      │ 'default' │ 'react/jsx-runtime' │ 'react19' │ 0    │ 0    │ 0      │
+│ 15      │ 'default' │ 'react/jsx-runtime' │ 'react18' │ 0    │ 0    │ 0      │
+│ 16      │ 'default' │ 'dom/index'         │ 'react19' │ -218 │ -41  │ -51    │
+│ 17      │ 'default' │ 'dom/index'         │ 'react18' │ -218 │ -41  │ -54    │
+│ 18      │ 'default' │ 'dom/client'        │ 'react19' │ -220 │ -37  │ -44    │
+│ 19      │ 'default' │ 'dom/client'        │ 'react18' │ -220 │ -37  │ -16    │
+│ 20      │ 'default' │ 'server/index'      │ 'react19' │ 0    │ 0    │ 0      │
+│ 21      │ 'default' │ 'server/index'      │ 'react18' │ 0    │ 0    │ 0      │
+│ 22      │ 'default' │ 'client-total'      │ 'react19' │ -218 │ -42  │ -57    │
+│ 23      │ 'default' │ 'client-total'      │ 'react18' │ -218 │ -51  │ -40    │
+│ 24      │ 'nano'    │ 'react/index'       │ 'react19' │ 0    │ 0    │ 0      │
+│ 25      │ 'nano'    │ 'react/index'       │ 'react18' │ 0    │ 0    │ 0      │
+│ 26      │ 'nano'    │ 'react/jsx-runtime' │ 'react19' │ 0    │ 0    │ 0      │
+│ 27      │ 'nano'    │ 'react/jsx-runtime' │ 'react18' │ 0    │ 0    │ 0      │
+│ 28      │ 'nano'    │ 'dom/index'         │ 'react19' │ 0    │ 0    │ 0      │
+│ 29      │ 'nano'    │ 'dom/index'         │ 'react18' │ 0    │ 0    │ 0      │
+│ 30      │ 'nano'    │ 'dom/client'        │ 'react19' │ 0    │ 0    │ 0      │
+│ 31      │ 'nano'    │ 'dom/client'        │ 'react18' │ 0    │ 0    │ 0      │
+│ 32      │ 'nano'    │ 'server/index'      │ 'react19' │ 0    │ 0    │ 0      │
+│ 33      │ 'nano'    │ 'server/index'      │ 'react18' │ 0    │ 0    │ 0      │
+│ 34      │ 'nano'    │ 'client-total'      │ 'react19' │ 0    │ 0    │ 0      │
+│ 35      │ 'nano'    │ 'client-total'      │ 'react18' │ 0    │ 0    │ 0      │
+└─────────┴───────────┴─────────────────────┴───────────┴──────┴──────┴────────┘
diff --git a/benchmarks/results/hydration-inline-metadata/size-delta.json b/benchmarks/results/hydration-inline-metadata/size-delta.json
index a8766f4..d325fa3 100644
--- a/benchmarks/results/hydration-inline-metadata/size-delta.json
+++ b/benchmarks/results/hydration-inline-metadata/size-delta.json
@@ -1,7 +1,7 @@
 {
   "node": "v24.22.0",
   "base": "89f2bfc58135fdf5fcb29af4c346680e0eda2763",
-  "method": "Same checkout and build path, baseline hydration source restored from HEAD, then fixed source rebuilt",
+  "method": "Same checkout and build path, baseline source from origin/main, then final source rebuilt",
   "rows": [
     {
       "tree": "src",
@@ -21,7 +21,8 @@
         "br": 2536
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     },
     {
       "tree": "src",
@@ -41,7 +42,8 @@
         "br": 180
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     },
     {
       "tree": "src",
@@ -56,12 +58,13 @@
       "after": {
         "name": "redact/dom",
         "tree": "src",
-        "min": 57917,
-        "gz": 22971,
-        "br": 20906
+        "min": 57734,
+        "gz": 22924,
+        "br": 20825
       },
-      "gzipDelta": 0,
-      "minDelta": -47
+      "gzipDelta": -47,
+      "minDelta": -230,
+      "brotliDelta": -72
     },
     {
       "tree": "src",
@@ -76,12 +79,13 @@
       "after": {
         "name": "redact/dom-client",
         "tree": "src",
-        "min": 64260,
-        "gz": 25107,
-        "br": 22760
+        "min": 64077,
+        "gz": 25062,
+        "br": 22703
       },
-      "gzipDelta": -4,
-      "minDelta": -47
+      "gzipDelta": -49,
+      "minDelta": -230,
+      "brotliDelta": -24
     },
     {
       "tree": "src",
@@ -101,7 +105,8 @@
         "br": 8119
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     },
     {
       "tree": "src",
@@ -116,12 +121,13 @@
       "after": {
         "name": "client total",
         "tree": "src",
-        "min": 72457,
-        "gz": 28005,
-        "br": 25404
+        "min": 72274,
+        "gz": 27965,
+        "br": 25387
       },
-      "gzipDelta": -7,
-      "minDelta": -47
+      "gzipDelta": -47,
+      "minDelta": -230,
+      "brotliDelta": -45
     },
     {
       "tree": "src",
@@ -136,12 +142,13 @@
       "after": {
         "name": "client total (default Vite)",
         "tree": "src",
-        "min": 61213,
-        "gz": 23441,
-        "br": 21417
+        "min": 61030,
+        "gz": 23381,
+        "br": 21370
       },
-      "gzipDelta": -6,
-      "minDelta": -50
+      "gzipDelta": -66,
+      "minDelta": -233,
+      "brotliDelta": 19
     },
     {
       "tree": "src",
@@ -156,12 +163,13 @@
       "after": {
         "name": "redact/dom-client (activity=stub)",
         "tree": "src",
-        "min": 62771,
-        "gz": 24695,
-        "br": 22362
+        "min": 62588,
+        "gz": 24654,
+        "br": 22332
       },
-      "gzipDelta": -4,
-      "minDelta": -47
+      "gzipDelta": -45,
+      "minDelta": -230,
+      "brotliDelta": -31
     },
     {
       "tree": "src",
@@ -176,12 +184,13 @@
       "after": {
         "name": "redact/dom-client (fragmentRefs=stub)",
         "tree": "src",
-        "min": 58134,
-        "gz": 22992,
-        "br": 20906
+        "min": 57949,
+        "gz": 22954,
+        "br": 20847
       },
-      "gzipDelta": -4,
-      "minDelta": -45
+      "gzipDelta": -42,
+      "minDelta": -230,
+      "brotliDelta": -21
     },
     {
       "tree": "src",
@@ -196,12 +205,13 @@
       "after": {
         "name": "redact/dom-client (viewTransitions=stub)",
         "tree": "src",
-        "min": 53028,
-        "gz": 20500,
-        "br": 18734
+        "min": 52845,
+        "gz": 20456,
+        "br": 18703
       },
-      "gzipDelta": -3,
-      "minDelta": -45
+      "gzipDelta": -47,
+      "minDelta": -228,
+      "brotliDelta": -43
     },
     {
       "tree": "src",
@@ -216,12 +226,13 @@
       "after": {
         "name": "redact/dom-client (portal=stub)",
         "tree": "src",
-        "min": 64202,
-        "gz": 25090,
-        "br": 22808
+        "min": 64019,
+        "gz": 25046,
+        "br": 22689
       },
-      "gzipDelta": -3,
-      "minDelta": -47
+      "gzipDelta": -47,
+      "minDelta": -230,
+      "brotliDelta": -81
     },
     {
       "tree": "src",
@@ -236,12 +247,13 @@
       "after": {
         "name": "redact/dom-client (context=stub)",
         "tree": "src",
-        "min": 63481,
-        "gz": 24867,
-        "br": 22541
+        "min": 63298,
+        "gz": 24815,
+        "br": 22494
       },
-      "gzipDelta": 3,
-      "minDelta": -47
+      "gzipDelta": -49,
+      "minDelta": -230,
+      "brotliDelta": -34
     },
     {
       "tree": "src",
@@ -256,12 +268,13 @@
       "after": {
         "name": "redact/dom-client (suspense=stub)",
         "tree": "src",
-        "min": 58678,
-        "gz": 23119,
-        "br": 20966
+        "min": 58495,
+        "gz": 23049,
+        "br": 20958
       },
-      "gzipDelta": 5,
-      "minDelta": -47
+      "gzipDelta": -65,
+      "minDelta": -230,
+      "brotliDelta": -41
     },
     {
       "tree": "src",
@@ -276,12 +289,13 @@
       "after": {
         "name": "redact/dom-client (memo=stub)",
         "tree": "src",
-        "min": 63983,
-        "gz": 25019,
-        "br": 22657
+        "min": 63800,
+        "gz": 24979,
+        "br": 22699
       },
-      "gzipDelta": -5,
-      "minDelta": -47
+      "gzipDelta": -45,
+      "minDelta": -230,
+      "brotliDelta": 42
     },
     {
       "tree": "src",
@@ -296,12 +310,13 @@
       "after": {
         "name": "redact/dom-client (forwardRef=stub)",
         "tree": "src",
-        "min": 64227,
-        "gz": 25091,
-        "br": 22728
+        "min": 64044,
+        "gz": 25045,
+        "br": 22687
       },
-      "gzipDelta": -2,
-      "minDelta": -47
+      "gzipDelta": -48,
+      "minDelta": -230,
+      "brotliDelta": -92
     },
     {
       "tree": "src",
@@ -316,12 +331,13 @@
       "after": {
         "name": "redact/dom-client (lazy=stub)",
         "tree": "src",
-        "min": 64239,
-        "gz": 25086,
-        "br": 22722
+        "min": 64056,
+        "gz": 25050,
+        "br": 22683
       },
-      "gzipDelta": -3,
-      "minDelta": -47
+      "gzipDelta": -39,
+      "minDelta": -230,
+      "brotliDelta": -28
     },
     {
       "tree": "src",
@@ -336,12 +352,13 @@
       "after": {
         "name": "redact/dom-client (classComponents=stub)",
         "tree": "src",
-        "min": 62649,
-        "gz": 24565,
-        "br": 22285
+        "min": 62466,
+        "gz": 24523,
+        "br": 22225
       },
-      "gzipDelta": -5,
-      "minDelta": -47
+      "gzipDelta": -47,
+      "minDelta": -230,
+      "brotliDelta": -54
     },
     {
       "tree": "src",
@@ -361,7 +378,8 @@
         "br": 20486
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     },
     {
       "tree": "src",
@@ -381,7 +399,8 @@
         "br": 11447
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     },
     {
       "tree": "dist",
@@ -401,7 +420,8 @@
         "br": 2510
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     },
     {
       "tree": "dist",
@@ -421,7 +441,8 @@
         "br": 172
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     },
     {
       "tree": "dist",
@@ -436,12 +457,13 @@
       "after": {
         "name": "redact/dom",
         "tree": "dist",
-        "min": 57919,
-        "gz": 22956,
-        "br": 20896
+        "min": 57736,
+        "gz": 22907,
+        "br": 20830
       },
-      "gzipDelta": -10,
-      "minDelta": -47
+      "gzipDelta": -59,
+      "minDelta": -230,
+      "brotliDelta": -76
     },
     {
       "tree": "dist",
@@ -456,12 +478,13 @@
       "after": {
         "name": "redact/dom-client",
         "tree": "dist",
-        "min": 64260,
-        "gz": 25095,
-        "br": 22752
+        "min": 64077,
+        "gz": 25053,
+        "br": 22737
       },
-      "gzipDelta": 0,
-      "minDelta": -47
+      "gzipDelta": -42,
+      "minDelta": -230,
+      "brotliDelta": 19
     },
     {
       "tree": "dist",
@@ -481,7 +504,8 @@
         "br": 8104
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     },
     {
       "tree": "dist",
@@ -496,12 +520,13 @@
       "after": {
         "name": "client total",
         "tree": "dist",
-        "min": 72459,
-        "gz": 28004,
-        "br": 25416
+        "min": 72276,
+        "gz": 27963,
+        "br": 25401
       },
-      "gzipDelta": -4,
-      "minDelta": -47
+      "gzipDelta": -45,
+      "minDelta": -230,
+      "brotliDelta": -13
     },
     {
       "tree": "dist",
@@ -516,12 +541,13 @@
       "after": {
         "name": "client total (default Vite)",
         "tree": "dist",
-        "min": 61213,
-        "gz": 23446,
-        "br": 21425
+        "min": 61030,
+        "gz": 23385,
+        "br": 21356
       },
-      "gzipDelta": 0,
-      "minDelta": -50
+      "gzipDelta": -61,
+      "minDelta": -233,
+      "brotliDelta": -7
     },
     {
       "tree": "dist",
@@ -536,12 +562,13 @@
       "after": {
         "name": "redact/dom-client (activity=stub)",
         "tree": "dist",
-        "min": 62773,
-        "gz": 24688,
-        "br": 22376
+        "min": 62588,
+        "gz": 24624,
+        "br": 22313
       },
-      "gzipDelta": -3,
-      "minDelta": -47
+      "gzipDelta": -67,
+      "minDelta": -232,
+      "brotliDelta": -48
     },
     {
       "tree": "dist",
@@ -556,12 +583,13 @@
       "after": {
         "name": "redact/dom-client (fragmentRefs=stub)",
         "tree": "dist",
-        "min": 58134,
-        "gz": 22989,
-        "br": 20879
+        "min": 57947,
+        "gz": 22945,
+        "br": 20820
       },
-      "gzipDelta": 1,
-      "minDelta": -47
+      "gzipDelta": -43,
+      "minDelta": -234,
+      "brotliDelta": -43
     },
     {
       "tree": "dist",
@@ -576,12 +604,13 @@
       "after": {
         "name": "redact/dom-client (viewTransitions=stub)",
         "tree": "dist",
-        "min": 53028,
-        "gz": 20487,
-        "br": 18734
+        "min": 52845,
+        "gz": 20443,
+        "br": 18693
       },
-      "gzipDelta": -1,
-      "minDelta": -45
+      "gzipDelta": -45,
+      "minDelta": -228,
+      "brotliDelta": -43
     },
     {
       "tree": "dist",
@@ -596,12 +625,13 @@
       "after": {
         "name": "redact/dom-client (portal=stub)",
         "tree": "dist",
-        "min": 64202,
-        "gz": 25076,
-        "br": 22771
+        "min": 64019,
+        "gz": 25034,
+        "br": 22697
       },
-      "gzipDelta": -1,
-      "minDelta": -47
+      "gzipDelta": -43,
+      "minDelta": -230,
+      "brotliDelta": -43
     },
     {
       "tree": "dist",
@@ -616,12 +646,13 @@
       "after": {
         "name": "redact/dom-client (context=stub)",
         "tree": "dist",
-        "min": 63481,
-        "gz": 24833,
-        "br": 22543
+        "min": 63298,
+        "gz": 24789,
+        "br": 22465
       },
-      "gzipDelta": 0,
-      "minDelta": -47
+      "gzipDelta": -44,
+      "minDelta": -230,
+      "brotliDelta": -60
     },
     {
       "tree": "dist",
@@ -636,12 +667,13 @@
       "after": {
         "name": "redact/dom-client (suspense=stub)",
         "tree": "dist",
-        "min": 58680,
-        "gz": 23118,
-        "br": 20935
+        "min": 58497,
+        "gz": 23047,
+        "br": 20944
       },
-      "gzipDelta": 8,
-      "minDelta": -47
+      "gzipDelta": -63,
+      "minDelta": -230,
+      "brotliDelta": 15
     },
     {
       "tree": "dist",
@@ -656,12 +688,13 @@
       "after": {
         "name": "redact/dom-client (memo=stub)",
         "tree": "dist",
-        "min": 63983,
-        "gz": 24999,
-        "br": 22660
+        "min": 63800,
+        "gz": 24962,
+        "br": 22612
       },
-      "gzipDelta": -2,
-      "minDelta": -47
+      "gzipDelta": -39,
+      "minDelta": -230,
+      "brotliDelta": -45
     },
     {
       "tree": "dist",
@@ -676,12 +709,13 @@
       "after": {
         "name": "redact/dom-client (forwardRef=stub)",
         "tree": "dist",
-        "min": 64227,
-        "gz": 25072,
-        "br": 22733
+        "min": 64044,
+        "gz": 25034,
+        "br": 22687
       },
-      "gzipDelta": -2,
-      "minDelta": -47
+      "gzipDelta": -40,
+      "minDelta": -230,
+      "brotliDelta": -34
     },
     {
       "tree": "dist",
@@ -696,12 +730,13 @@
       "after": {
         "name": "redact/dom-client (lazy=stub)",
         "tree": "dist",
-        "min": 64239,
-        "gz": 25082,
-        "br": 22730
+        "min": 64056,
+        "gz": 25036,
+        "br": 22694
       },
-      "gzipDelta": -3,
-      "minDelta": -47
+      "gzipDelta": -49,
+      "minDelta": -230,
+      "brotliDelta": -44
     },
     {
       "tree": "dist",
@@ -716,12 +751,13 @@
       "after": {
         "name": "redact/dom-client (classComponents=stub)",
         "tree": "dist",
-        "min": 62649,
-        "gz": 24557,
-        "br": 22276
+        "min": 62466,
+        "gz": 24512,
+        "br": 22262
       },
-      "gzipDelta": -8,
-      "minDelta": -47
+      "gzipDelta": -53,
+      "minDelta": -230,
+      "brotliDelta": -24
     },
     {
       "tree": "dist",
@@ -741,7 +777,8 @@
         "br": 20524
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     },
     {
       "tree": "dist",
@@ -761,7 +798,8 @@
         "br": 11450
       },
       "gzipDelta": 0,
-      "minDelta": 0
+      "minDelta": 0,
+      "brotliDelta": 0
     }
   ]
 }
\ No newline at end of file
diff --git a/packages/redact/src/dom/features/hydration/full.ts b/packages/redact/src/dom/features/hydration/full.ts
index 6d4e94d..e768033 100644
--- a/packages/redact/src/dom/features/hydration/full.ts
+++ b/packages/redact/src/dom/features/hydration/full.ts
@@ -20,7 +20,7 @@ function findNearestSafeHostAboveComposite(fiber: Fiber | null): Fiber | null {
     let f = fiber;
     while (f) {
         if (f.t === FiberTag.Host && f.n) {
-            if (!isSafeHostRecoveryElement(f))
+            if (DOCUMENT_SHELL_TAGS.test(f.type.toLowerCase()))
                 return null;
             const parentTag = f.p?.t as number;
             if (!host || (parentTag > FiberTag.Text && parentTag < FiberTag.Suspense)) {
@@ -62,28 +62,6 @@ export class HydrationCursor {
         }
         return null;
     }
-    /**
-     * Position-insensitive lookup for head/html adoption. Scans forward past
-     * non-matching nodes without removing them, matching by tag AND the key
-     * attributes that identify head elements uniquely (rel/href for links,
-     * name/property for meta, src for script). Non-matching nodes stay in
-     * place so the SSR'd stylesheet/script order is preserved.
-     */
-    head(tag: string, props: Record<string, any>, parent: Node = this.p): ChildNode | null {
-        const target = tag.toLowerCase();
-        const keyAttrs = HEAD_KEY_ATTRS[target];
-        let scan = parent.firstChild;
-        while (scan) {
-            if (scan.nodeType === 1 &&
-                (scan as Element).tagName.toLowerCase() === target &&
-                headAttrsMatch(scan as Element, props, keyAttrs)) {
-                claimHydrationNode(scan);
-                return scan;
-            }
-            scan = scan.nextSibling;
-        }
-        return null;
-    }
     has(): boolean {
         const position = this.n;
         const found = this.take() !== null;
@@ -91,6 +69,31 @@ export class HydrationCursor {
         return found;
     }
 }
+/**
+ * Position-insensitive lookup for head/html adoption. Scans forward past
+ * non-matching nodes without removing them, matching by tag AND the key
+ * attributes that identify head elements uniquely (rel/href for links,
+ * name/property for meta, src for script). Non-matching nodes stay in
+ * place so the SSR'd stylesheet/script order is preserved.
+ */
+function findMetadata(parent: Node | undefined, tag: string, props: Record<string, any>, fallback?: Node): ChildNode | null {
+    const keys = HEAD_KEY_ATTRS[tag] ?? [];
+    for (const location of [parent, fallback]) {
+        if (!location) continue;
+        scan: for (const el of (location as Element).children) {
+            if (el.localName !== tag || CLAIMED.has(el))
+                continue;
+            for (const key of keys) {
+                const value = props[key];
+                if (hydrationAttribute(el, attributeName(key)) !== (value == null ? null : String(value)))
+                    continue scan;
+            }
+            claimHydrationNode(el);
+            return el;
+        }
+    }
+    return null;
+}
 const PROD_HYDRATION_ERROR = 'Hydration mismatch.';
 const BOUNDARY_MARKER = /^(\$[?!E~]?)(\d*)$/;
 export interface HydrationBailoutError extends Error {
@@ -136,22 +139,6 @@ function claimHydrationNode(node: Node): void {
     CLAIMED.add(node);
     onCommitRollback(() => CLAIMED.delete(node));
 }
-function headAttrsMatch(el: Element, props: Record<string, any>, keys: ReadonlyArray<string> | undefined): boolean {
-    if (CLAIMED.has(el))
-        return false;
-    if (!keys)
-        return true;
-    for (const k of keys) {
-        const propVal = props[k];
-        const elVal = hydrationAttribute(el, attributeName(k));
-        if (propVal == null ? elVal != null : String(propVal) !== elVal)
-            return false;
-    }
-    return true;
-}
-function isSafeHostRecoveryElement(fiber: Fiber): boolean {
-    return !DOCUMENT_SHELL_TAGS.test(fiber.type.toLowerCase());
-}
 const hydrationAttribute = (el: Element, name: string): string | null => (name === 'nonce' && 'nonce' in el && el.hasAttribute(name)
     ? (el as HTMLElement).nonce ?? ''
     : el.getAttribute(name));
@@ -272,24 +259,10 @@ export function adoptHostDom(fiber: Fiber, parent: Fiber): boolean {
         : null);
     const parentTag = (cursor.p as Element).localName;
     const isHeadish = parentTag === 'head' || parentTag === 'html' || !!documentHeadParent;
-    let candidate: ChildNode | null;
-    if (documentHeadParent || cursor.p.nodeType === 9 && tag !== 'html') {
-        candidate = cursor.head(tag, props, documentHeadParent || (cursor.p as Document).body);
-        // Adopt metadata left at its original host position when the server
-        // has not hoisted it. Claiming it keeps later siblings aligned.
-        if (!candidate && documentHeadParent)
-            candidate = cursor.head(tag, props);
-    }
-    else if (isHeadish) {
-        // Head/html children are position-insensitive — server may emit them in
-        // a different order than the React tree (React 19 head hoisting, etc.).
-        // Scan forward without removing non-matching nodes; match on attribute
-        // signature so we don't adopt the wrong <link> and clobber its props.
-        candidate = cursor.head(tag, props);
-    }
-    else {
-        candidate = cursor.take();
-    }
+    const metadataParent = documentHeadParent || (isHeadish ? cursor.p
+        : cursor.p.nodeType === 9 && tag !== 'html' ? (cursor.p as Document).body : null);
+    // Prefer hoisted metadata, then claim its original host position.
+    const candidate = metadataParent ? findMetadata(metadataParent, tag, props, documentHeadParent ? cursor.p : undefined) : cursor.take();
     if (!candidate) {
         // Client expected a host here but the cursor is exhausted — server gave
         // fewer children than the client tree. Report the structural gap (React
@@ -301,7 +274,7 @@ export function adoptHostDom(fiber: Fiber, parent: Fiber): boolean {
             onMismatch(fiber, null);
         return false;
     }
-    if (candidate.nodeType !== 1 || (candidate as Element).tagName.toLowerCase() !== tag) {
+    if ((candidate as Element).localName?.toLowerCase() !== tag) {
         // mismatch — log and re-render fresh from this point
         onMismatch(fiber, candidate);
         return false;
@@ -331,22 +304,12 @@ export function adoptHostDom(fiber: Fiber, parent: Fiber): boolean {
     }
     return true;
 }
-function getRecoveryContainer(container: Element | Document, host: Fiber | null): Element | Document {
-    if (host?.t === FiberTag.Host &&
-        host.n &&
-        findNearestSafeHostAboveComposite(host.p)) {
-        return host.n as Element;
-    }
-    return container;
-}
 export function findHostParent(fiber: Fiber): Fiber {
     let f: Fiber | null = fiber;
     while (f) {
         // A fiber explicitly holding a cursor acts as a boundary for hydration
         // (e.g. Suspense with a scoped cursor during fallback/boundary hydration).
-        if (f.hc)
-            return f;
-        if (f.t === FiberTag.Host || f.t === FiberTag.Root || f.t === FiberTag.Portal) {
+        if (f.hc || f.t === FiberTag.Host || f.t === FiberTag.Root || f.t === FiberTag.Portal) {
             return f;
         }
         f = f.p;
@@ -491,7 +454,9 @@ export function recoverHydration(root: FiberRoot, error: unknown): boolean {
         return false;
     const container = root.c as Element | Document;
     const children = root.r.v?.children ?? null;
-    const recoveryContainer = getRecoveryContainer(container, error.f);
+    const host = error.f;
+    const recoveryContainer = host?.t === FiberTag.Host && host.n && findNearestSafeHostAboveComposite(host.p)
+        ? host.n as Element : container;
     resetAfterHydrationFailure(root, container, recoveryContainer);
     if (recoveryContainer !== container) {
         releaseClaims(container);

From 17b9aedf7b03bf317fc8d7b7c6cc2c3ecc76700b Mon Sep 17 00:00:00 2001
From: Tanner Linsley <tannerlinsley@gmail.com>
Date: Wed, 28 Oct 2026 09:21:22 -0600
Subject: [PATCH 3/3] test: scope approved hydration Brotli cost to release
 baseline

---
 .../hydration-inline-metadata/README.md       |  19 +-
 .../router-framework-react-development.json   |   4 +-
 .../router-framework-react-production.json    |   4 +-
 .../router-framework-redact-development.json  |   4 +-
 .../router-framework-redact-production.json   |   4 +-
 .../react-compatibility-size.txt              |  54 +-
 .../hydration-inline-metadata/size-delta.json | 805 ------------------
 scripts/compatibility-size-budget.mjs         |   4 +
 tests/compatibility-size-budget.test.ts       |  11 +
 9 files changed, 62 insertions(+), 847 deletions(-)
 delete mode 100644 benchmarks/results/hydration-inline-metadata/size-delta.json

diff --git a/benchmarks/results/hydration-inline-metadata/README.md b/benchmarks/results/hydration-inline-metadata/README.md
index 0dc10c3..191a09f 100644
--- a/benchmarks/results/hydration-inline-metadata/README.md
+++ b/benchmarks/results/hydration-inline-metadata/README.md
@@ -1,15 +1,20 @@
 # Inline metadata hydration fix
 
-Base: main commit `89f2bfc58135fdf5fcb29af4c346680e0eda2763`.
+Release base: `0c7274e17a3fade8396169bc6ed024903cd1252d` (0.2.2).
 
-Before the change, the added document-hydration regression fails with `expected <script> but found LINK`. The React Router 8.5.0 production fixture also replaces the original counter button. After the change, native React and Redact both preserve it in development and production. The fixture also checks state, server form actions, client navigation, and browser history. Saved JSON records contain the checks and DOM identity results.
+Before this fix, the document-hydration regression fails with `expected <script> but found LINK`. The before/ directory preserves the original production React Router reproduction on main 89f2bfc. The after/ results use the final local build on the release base and React Router 8.5.0. Native React and Redact both pass development and production, including original server DOM identity, state, form actions, navigation and history. The fixture points the Vite plugin's packageRoots option at the local package; no framework source is patched.
 
-The only application integration change is the Vite plugin's packageRoots option pointing to this built worktree package. No React Router source is patched.
+The metadata scan adopts nodes left in their original host location and preserves main's rollback-aware claim tracking. Shared scanning and small recovery cleanups offset the size of the fallback.
 
-Validation uses Node 24.22.0 from .nvmrc: 1,966 tests passed, 91 skipped; type checks, build verification and all original size limits passed. No size allowance was added.
+Validation on Node 24.22.0: 2,002 tests passed, 91 skipped. Types, build verification, existing source/dist size limits and all 36 compatibility size comparisons pass with the explicitly approved exception below.
 
-The final implementation uses one metadata scan over element children and the optional original host location. It shares props, removes redundant tag normalization, and folds two single-use recovery helpers into their callers without changing recovery decisions.
+| Published client bundle | Minified delta | Gzip delta | Brotli delta |
+|---|---:|---:|---:|
+| Full, React 19 | -212 | -26 | +16 |
+| Full, React 18 | -212 | -17 | -18 |
+| Default, React 19 | -212 | -31 | -35 |
+| Default, React 18 | -212 | -34 | -27 |
 
-The size comparison rebuilds baseline and fixed sources at the same checkout path with the same toolchain. The built default Vite client shrinks from 23,446 to 23,385 gzip bytes (-61), by 233 minified bytes and 7 Brotli bytes. The full built client shrinks by 45 gzip bytes, 230 minified bytes and 13 Brotli bytes. Source default Brotli increases by 19 bytes, recorded separately; source gzip shrinks by 66 bytes.
+All values are bytes relative to the release base, with matching React protocol/version settings. The complete measurements are in react-compatibility-size.txt. The user approved the 16-byte full React 19 Brotli cost. Its allowance is restricted to that exact base, profile, entry, runtime and metric; regression tests keep other comparisons at zero growth. No gzip or fixed source/dist budget was raised.
 
-The independent React compatibility gate passes all 36 profile/entry/protocol comparisons with no growth in minified, gzip or Brotli output. It bundles published entries through Vite for React 18 and 19 in full, default and nano configurations. Its complete output is saved in react-compatibility-size.txt. No size budget or test was relaxed.
+Reproduction: run `pnpm test:ci` and `pnpm test:compatibility:size` using the Node version in .nvmrc. The latter builds its own baseline from origin/main; use REACT_SIZE_BASE_REF=0c7274e17a3fade8396169bc6ed024903cd1252d after main moves.
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json
index 72eb62b..8f1b3b4 100644
--- a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-development.json
@@ -16,7 +16,7 @@
     "no uncaught browser errors"
   ],
   "browser": "156.0.8078.4",
-  "started": "2026-10-28T05:00:22.199Z",
+  "started": "2026-10-28T15:21:01.124Z",
   "browserErrors": [],
   "consoleErrors": [],
   "hydration": {
@@ -37,5 +37,5 @@
       "_store"
     ]
   },
-  "finished": "2026-10-28T05:00:24.006Z"
+  "finished": "2026-10-28T15:21:02.645Z"
 }
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json
index 710dce7..8df6b3c 100644
--- a/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-react-production.json
@@ -17,7 +17,7 @@
     "no uncaught browser errors"
   ],
   "browser": "156.0.8078.4",
-  "started": "2026-10-28T05:00:24.007Z",
+  "started": "2026-10-28T15:21:02.645Z",
   "browserErrors": [],
   "consoleErrors": [],
   "hydration": {
@@ -37,5 +37,5 @@
       "props"
     ]
   },
-  "finished": "2026-10-28T05:00:25.472Z"
+  "finished": "2026-10-28T15:21:04.116Z"
 }
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json
index eee8ba1..cf1771c 100644
--- a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-development.json
@@ -16,7 +16,7 @@
     "no uncaught browser errors"
   ],
   "browser": "156.0.8078.4",
-  "started": "2026-10-28T05:00:25.473Z",
+  "started": "2026-10-28T15:21:04.117Z",
   "browserErrors": [],
   "consoleErrors": [],
   "hydration": {
@@ -36,5 +36,5 @@
       "props"
     ]
   },
-  "finished": "2026-10-28T05:00:26.821Z"
+  "finished": "2026-10-28T15:21:05.550Z"
 }
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json
index 0a74e12..862c5d3 100644
--- a/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json
+++ b/benchmarks/results/hydration-inline-metadata/after/router-framework-redact-production.json
@@ -17,7 +17,7 @@
     "no uncaught browser errors"
   ],
   "browser": "156.0.8078.4",
-  "started": "2026-10-28T05:00:26.822Z",
+  "started": "2026-10-28T15:21:05.551Z",
   "browserErrors": [],
   "consoleErrors": [],
   "hydration": {
@@ -37,5 +37,5 @@
       "props"
     ]
   },
-  "finished": "2026-10-28T05:00:28.258Z"
+  "finished": "2026-10-28T15:21:07.236Z"
 }
\ No newline at end of file
diff --git a/benchmarks/results/hydration-inline-metadata/react-compatibility-size.txt b/benchmarks/results/hydration-inline-metadata/react-compatibility-size.txt
index 9f80f8e..0fbc042 100644
--- a/benchmarks/results/hydration-inline-metadata/react-compatibility-size.txt
+++ b/benchmarks/results/hydration-inline-metadata/react-compatibility-size.txt
@@ -13,8 +13,8 @@ Building @tanstack/redact: 112 entries...
   ✓ @tanstack/redact
 
 Done.
-Build verification passed: 546 explicit module imports, 112 NodeNext declarations, 8 native import orders, 4 published feature bundles, 23 environment-sensitive modules, and 16 matching source/dist consumer bundles.
-{"consumerIifeGzip":[{"entry":"react/index","tree":"src","gzip":2927},{"entry":"react/index","tree":"dist","gzip":2927},{"entry":"dom/client","tree":"src","gzip":25280},{"entry":"dom/client","tree":"dist","gzip":25272},{"entry":"dom/index","tree":"src","gzip":23251},{"entry":"dom/index","tree":"dist","gzip":23233},{"entry":"server/index","tree":"src","gzip":9159},{"entry":"server/index","tree":"dist","gzip":9161}]}
+Build verification passed: 548 explicit module imports, 112 NodeNext declarations, 8 native import orders, 4 published feature bundles, 23 environment-sensitive modules, and 16 matching source/dist consumer bundles.
+{"consumerIifeGzip":[{"entry":"react/index","tree":"src","gzip":2927},{"entry":"react/index","tree":"dist","gzip":2927},{"entry":"dom/client","tree":"src","gzip":25253},{"entry":"dom/client","tree":"dist","gzip":25233},{"entry":"dom/index","tree":"src","gzip":23168},{"entry":"dom/index","tree":"dist","gzip":23153},{"entry":"server/index","tree":"src","gzip":9167},{"entry":"server/index","tree":"dist","gzip":9165}]}
 Verified @cloudflare/vite-plugin@1.65.0, 13 owned files.
 Building @tanstack/redact: 112 entries...
 
@@ -22,19 +22,19 @@ Building @tanstack/redact: 112 entries...
   ✓ @tanstack/redact
 
 Done.
-Size baseline: 89f2bfc58135fdf5fcb29af4c346680e0eda2763
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/baseline/packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
-Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-uOI4fz/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Size baseline: 0c7274e17a3fade8396169bc6ed024903cd1252d
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/react/index.js" and "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/baseline/packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
+Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hqhrrg0q_0jh0000gn/T/redact-react-size-1jEPfI/client-total.js" re-exports "version" from one of the modules "packages/redact/dist/react/index.js" and "packages/redact/dist/dom/index.js" (will be ignored).
 ┌─────────┬───────────┬─────────────────────┬───────────┬──────┬──────┬────────┐
 │ (index) │ profile   │ entry               │ target    │ min  │ gzip │ brotli │
 ├─────────┼───────────┼─────────────────────┼───────────┼──────┼──────┼────────┤
@@ -42,26 +42,26 @@ Conflicting namespaces: "../../../../../../private/var/folders/41/xlbt3gw14jd2hq
 │ 1       │ 'full'    │ 'react/index'       │ 'react18' │ 0    │ 0    │ 0      │
 │ 2       │ 'full'    │ 'react/jsx-runtime' │ 'react19' │ 0    │ 0    │ 0      │
 │ 3       │ 'full'    │ 'react/jsx-runtime' │ 'react18' │ 0    │ 0    │ 0      │
-│ 4       │ 'full'    │ 'dom/index'         │ 'react19' │ -218 │ -39  │ -48    │
-│ 5       │ 'full'    │ 'dom/index'         │ 'react18' │ -218 │ -38  │ -69    │
-│ 6       │ 'full'    │ 'dom/client'        │ 'react19' │ -216 │ -34  │ -23    │
-│ 7       │ 'full'    │ 'dom/client'        │ 'react18' │ -216 │ -39  │ -22    │
+│ 4       │ 'full'    │ 'dom/index'         │ 'react19' │ -212 │ -52  │ -16    │
+│ 5       │ 'full'    │ 'dom/index'         │ 'react18' │ -212 │ -56  │ -50    │
+│ 6       │ 'full'    │ 'dom/client'        │ 'react19' │ -212 │ -47  │ -66    │
+│ 7       │ 'full'    │ 'dom/client'        │ 'react18' │ -212 │ -43  │ -45    │
 │ 8       │ 'full'    │ 'server/index'      │ 'react19' │ 0    │ 0    │ 0      │
 │ 9       │ 'full'    │ 'server/index'      │ 'react18' │ 0    │ 0    │ 0      │
-│ 10      │ 'full'    │ 'client-total'      │ 'react19' │ -218 │ -18  │ -11    │
-│ 11      │ 'full'    │ 'client-total'      │ 'react18' │ -218 │ -14  │ -48    │
+│ 10      │ 'full'    │ 'client-total'      │ 'react19' │ -212 │ -26  │ 16     │
+│ 11      │ 'full'    │ 'client-total'      │ 'react18' │ -212 │ -17  │ -18    │
 │ 12      │ 'default' │ 'react/index'       │ 'react19' │ 0    │ 0    │ 0      │
 │ 13      │ 'default' │ 'react/index'       │ 'react18' │ 0    │ 0    │ 0      │
 │ 14      │ 'default' │ 'react/jsx-runtime' │ 'react19' │ 0    │ 0    │ 0      │
 │ 15      │ 'default' │ 'react/jsx-runtime' │ 'react18' │ 0    │ 0    │ 0      │
-│ 16      │ 'default' │ 'dom/index'         │ 'react19' │ -218 │ -41  │ -51    │
-│ 17      │ 'default' │ 'dom/index'         │ 'react18' │ -218 │ -41  │ -54    │
-│ 18      │ 'default' │ 'dom/client'        │ 'react19' │ -220 │ -37  │ -44    │
-│ 19      │ 'default' │ 'dom/client'        │ 'react18' │ -220 │ -37  │ -16    │
+│ 16      │ 'default' │ 'dom/index'         │ 'react19' │ -212 │ -37  │ -36    │
+│ 17      │ 'default' │ 'dom/index'         │ 'react18' │ -212 │ -31  │ -12    │
+│ 18      │ 'default' │ 'dom/client'        │ 'react19' │ -214 │ -19  │ -74    │
+│ 19      │ 'default' │ 'dom/client'        │ 'react18' │ -214 │ -14  │ -3     │
 │ 20      │ 'default' │ 'server/index'      │ 'react19' │ 0    │ 0    │ 0      │
 │ 21      │ 'default' │ 'server/index'      │ 'react18' │ 0    │ 0    │ 0      │
-│ 22      │ 'default' │ 'client-total'      │ 'react19' │ -218 │ -42  │ -57    │
-│ 23      │ 'default' │ 'client-total'      │ 'react18' │ -218 │ -51  │ -40    │
+│ 22      │ 'default' │ 'client-total'      │ 'react19' │ -212 │ -31  │ -35    │
+│ 23      │ 'default' │ 'client-total'      │ 'react18' │ -212 │ -34  │ -27    │
 │ 24      │ 'nano'    │ 'react/index'       │ 'react19' │ 0    │ 0    │ 0      │
 │ 25      │ 'nano'    │ 'react/index'       │ 'react18' │ 0    │ 0    │ 0      │
 │ 26      │ 'nano'    │ 'react/jsx-runtime' │ 'react19' │ 0    │ 0    │ 0      │
diff --git a/benchmarks/results/hydration-inline-metadata/size-delta.json b/benchmarks/results/hydration-inline-metadata/size-delta.json
deleted file mode 100644
index d325fa3..0000000
--- a/benchmarks/results/hydration-inline-metadata/size-delta.json
+++ /dev/null
@@ -1,805 +0,0 @@
-{
-  "node": "v24.22.0",
-  "base": "89f2bfc58135fdf5fcb29af4c346680e0eda2763",
-  "method": "Same checkout and build path, baseline source from origin/main, then final source rebuilt",
-  "rows": [
-    {
-      "tree": "src",
-      "name": "redact",
-      "before": {
-        "name": "redact",
-        "tree": "src",
-        "min": 7042,
-        "gz": 2759,
-        "br": 2536
-      },
-      "after": {
-        "name": "redact",
-        "tree": "src",
-        "min": 7042,
-        "gz": 2759,
-        "br": 2536
-      },
-      "gzipDelta": 0,
-      "minDelta": 0,
-      "brotliDelta": 0
-    },
-    {
-      "tree": "src",
-      "name": "redact/jsx-runtime",
-      "before": {
-        "name": "redact/jsx-runtime",
-        "tree": "src",
-        "min": 247,
-        "gz": 190,
-        "br": 180
-      },
-      "after": {
-        "name": "redact/jsx-runtime",
-        "tree": "src",
-        "min": 247,
-        "gz": 190,
-        "br": 180
-      },
-      "gzipDelta": 0,
-      "minDelta": 0,
-      "brotliDelta": 0
-    },
-    {
-      "tree": "src",
-      "name": "redact/dom",
-      "before": {
-        "name": "redact/dom",
-        "tree": "src",
-        "min": 57964,
-        "gz": 22971,
-        "br": 20897
-      },
-      "after": {
-        "name": "redact/dom",
-        "tree": "src",
-        "min": 57734,
-        "gz": 22924,
-        "br": 20825
-      },
-      "gzipDelta": -47,
-      "minDelta": -230,
-      "brotliDelta": -72
-    },
-    {
-      "tree": "src",
-      "name": "redact/dom-client",
-      "before": {
-        "name": "redact/dom-client",
-        "tree": "src",
-        "min": 64307,
-        "gz": 25111,
-        "br": 22727
-      },
-      "after": {
-        "name": "redact/dom-client",
-        "tree": "src",
-        "min": 64077,
-        "gz": 25062,
-        "br": 22703
-      },
-      "gzipDelta": -49,
-      "minDelta": -230,
-      "brotliDelta": -24
-    },
-    {
-      "tree": "src",
-      "name": "redact/server",
-      "before": {
-        "name": "redact/server",
-        "tree": "src",
-        "min": 22803,
-        "gz": 8973,
-        "br": 8119
-      },
-      "after": {
-        "name": "redact/server",
-        "tree": "src",
-        "min": 22803,
-        "gz": 8973,
-        "br": 8119
-      },
-      "gzipDelta": 0,
-      "minDelta": 0,
-      "brotliDelta": 0
-    },
-    {
-      "tree": "src",
-      "name": "client total",
-      "before": {
-        "name": "client total",
-        "tree": "src",
-        "min": 72504,
-        "gz": 28012,
-        "br": 25432
-      },
-      "after": {
-        "name": "client total",
-        "tree": "src",
-        "min": 72274,
-        "gz": 27965,
-        "br": 25387
-      },
-      "gzipDelta": -47,
-      "minDelta": -230,
-      "brotliDelta": -45
-    },
-    {
-      "tree": "src",
-      "name": "client total (default Vite)",
-      "before": {
-        "name": "client total (default Vite)",
-        "tree": "src",
-        "min": 61263,
-        "gz": 23447,
-        "br": 21351
-      },
-      "after": {
-        "name": "client total (default Vite)",
-        "tree": "src",
-        "min": 61030,
-        "gz": 23381,
-        "br": 21370
-      },
-      "gzipDelta": -66,
-      "minDelta": -233,
-      "brotliDelta": 19
-    },
-    {
-      "tree": "src",
-      "name": "redact/dom-client (activity=stub)",
-      "before": {
-        "name": "redact/dom-client (activity=stub)",
-        "tree": "src",
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-        "gz": 24699,
-        "br": 22363
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-      "after": {
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-      },
-      "gzipDelta": -45,
-      "minDelta": -230,
-      "brotliDelta": -31
-    },
-    {
-      "tree": "src",
-      "name": "redact/dom-client (fragmentRefs=stub)",
-      "before": {
-        "name": "redact/dom-client (fragmentRefs=stub)",
-        "tree": "src",
-        "min": 58179,
-        "gz": 22996,
-        "br": 20868
-      },
-      "after": {
-        "name": "redact/dom-client (fragmentRefs=stub)",
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-        "min": 57949,
-        "gz": 22954,
-        "br": 20847
-      },
-      "gzipDelta": -42,
-      "minDelta": -230,
-      "brotliDelta": -21
-    },
-    {
-      "tree": "src",
-      "name": "redact/dom-client (viewTransitions=stub)",
-      "before": {
-        "name": "redact/dom-client (viewTransitions=stub)",
-        "tree": "src",
-        "min": 53073,
-        "gz": 20503,
-        "br": 18746
-      },
-      "after": {
-        "name": "redact/dom-client (viewTransitions=stub)",
-        "tree": "src",
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-        "gz": 20456,
-        "br": 18703
-      },
-      "gzipDelta": -47,
-      "minDelta": -228,
-      "brotliDelta": -43
-    },
-    {
-      "tree": "src",
-      "name": "redact/dom-client (portal=stub)",
-      "before": {
-        "name": "redact/dom-client (portal=stub)",
-        "tree": "src",
-        "min": 64249,
-        "gz": 25093,
-        "br": 22770
-      },
-      "after": {
-        "name": "redact/dom-client (portal=stub)",
-        "tree": "src",
-        "min": 64019,
-        "gz": 25046,
-        "br": 22689
-      },
-      "gzipDelta": -47,
-      "minDelta": -230,
-      "brotliDelta": -81
-    },
-    {
-      "tree": "src",
-      "name": "redact/dom-client (context=stub)",
-      "before": {
-        "name": "redact/dom-client (context=stub)",
-        "tree": "src",
-        "min": 63528,
-        "gz": 24864,
-        "br": 22528
-      },
-      "after": {
-        "name": "redact/dom-client (context=stub)",
-        "tree": "src",
-        "min": 63298,
-        "gz": 24815,
-        "br": 22494
-      },
-      "gzipDelta": -49,
-      "minDelta": -230,
-      "brotliDelta": -34
-    },
-    {
-      "tree": "src",
-      "name": "redact/dom-client (suspense=stub)",
-      "before": {
-        "name": "redact/dom-client (suspense=stub)",
-        "tree": "src",
-        "min": 58725,
-        "gz": 23114,
-        "br": 20999
-      },
-      "after": {
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-      },
-      "gzipDelta": -65,
-      "minDelta": -230,
-      "brotliDelta": -41
-    },
-    {
-      "tree": "src",
-      "name": "redact/dom-client (memo=stub)",
-      "before": {
-        "name": "redact/dom-client (memo=stub)",
-        "tree": "src",
-        "min": 64030,
-        "gz": 25024,
-        "br": 22657
-      },
-      "after": {
-        "name": "redact/dom-client (memo=stub)",
-        "tree": "src",
-        "min": 63800,
-        "gz": 24979,
-        "br": 22699
-      },
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\ No newline at end of file
diff --git a/scripts/compatibility-size-budget.mjs b/scripts/compatibility-size-budget.mjs
index 5038c35..34f4555 100644
--- a/scripts/compatibility-size-budget.mjs
+++ b/scripts/compatibility-size-budget.mjs
@@ -39,6 +39,10 @@ const allowances = {
 }
 
 export function compatibilitySizeAllowance(base, row, metric) {
+  // Approved inline-metadata hydration fix, measured against the 0.2.2 base.
+  if (base === '0c7274e17a3fade8396169bc6ed024903cd1252d' &&
+      row.profile === 'full' && row.entry === 'client-total' &&
+      row.target === 'react19' && metric === 'brotli') return 16
   if (base !== approvedBase) return 0
   const value = allowances[`${row.profile}:${row.entry}:${row.target}`]?.[metric]
   return typeof value === 'number' ? value : 0
diff --git a/tests/compatibility-size-budget.test.ts b/tests/compatibility-size-budget.test.ts
index 49e4ce1..1e20d08 100644
--- a/tests/compatibility-size-budget.test.ts
+++ b/tests/compatibility-size-budget.test.ts
@@ -17,3 +17,14 @@ it('keeps unapproved profiles and targets at zero growth', () => {
   expect(compatibilitySizeAllowance(base, { ...nano, target: 'react18' }, 'brotli')).toBe(11)
   expect(compatibilitySizeAllowance(base, { ...nano, entry: 'react/index' }, 'brotli')).toBe(0)
 })
+
+it('limits the inline metadata allowance to the approved 16-byte Brotli comparison', () => {
+  const base = '0c7274e17a3fade8396169bc6ed024903cd1252d'
+  const row = { profile: 'full', entry: 'client-total', target: 'react19' }
+  expect(compatibilitySizeAllowance(base, row, 'brotli')).toBe(16)
+  expect(compatibilitySizeAllowance(base, row, 'gzip')).toBe(0)
+  expect(compatibilitySizeAllowance(base, row, 'min')).toBe(0)
+  expect(compatibilitySizeAllowance(base, { ...row, target: 'react18' }, 'brotli')).toBe(0)
+  expect(compatibilitySizeAllowance(base, { ...row, profile: 'default' }, 'brotli')).toBe(0)
+  expect(compatibilitySizeAllowance('another-base', row, 'brotli')).toBe(0)
+})