diff --git a/.github/workflows/effx-analyze.yml b/.github/workflows/effx-analyze.yml
new file mode 100644
index 0000000..d690998
--- /dev/null
+++ b/.github/workflows/effx-analyze.yml
@@ -0,0 +1,75 @@
+name: effx analyze
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out pull request without credentials
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - name: Check out immutable effx tool revision
+        uses: actions/checkout@v4
+        with:
+          repository: phibkro/oxlint-effect-plugin
+          ref: 0e41f6b05b08f7ecfd91c7e55e77e98d8b650b02
+          path: .effx-tool
+          persist-credentials: false
+      - name: Set up Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: 1.3.13
+      - name: Install the reviewed effx tool
+        working-directory: .effx-tool
+        run: |
+          bun install --frozen-lockfile --ignore-scripts
+          bun run build
+      - name: Create repository-independent EffectTS configuration
+        run: |
+          cat > .effx-oxlintrc.json <<'JSON'
+          {
+            "jsPlugins": [{ "name": "effect", "specifier": "./.effx-tool/dist/index.js" }],
+            "ignorePatterns": [".effx-tool/**", "node_modules/**", "dist/**", "build/**", "coverage/**", ".git/**"],
+            "rules": {
+              "effect/no-ambient-console": ["error", { "role": "effect-library", "platform": "portable" }],
+              "effect/no-ambient-authority": ["error", { "role": "effect-library", "platform": "portable" }],
+              "effect/no-cross-runtime": ["error", { "role": "effect-library", "platform": "portable" }],
+              "effect/no-premature-execution": ["error", { "role": "effect-library", "platform": "portable" }],
+              "effect/no-native-promise-control-flow": ["error", { "role": "effect-library", "platform": "portable" }],
+              "effect/no-raw-json-parse": ["error", { "role": "effect-library", "platform": "portable", "boundaries": ["external-data"] }],
+              "effect/no-untyped-throw": ["error", { "role": "effect-library", "platform": "portable" }],
+              "effect/no-opaque-instance-fields": ["error", { "role": "effect-library", "platform": "portable" }]
+            }
+          }
+          JSON
+      - name: Run Oxlint with structured output
+        run: |
+          set +e
+          .effx-tool/node_modules/.bin/oxlint --config .effx-oxlintrc.json --format json . > effx-oxlint.json
+          status=$?
+          set -e
+          test -s effx-oxlint.json
+          test "$status" -le 1
+      - name: Translate diagnostics
+        run: bun .effx-tool/dist/cli.js translate < effx-oxlint.json > effx-diagnostics.json
+      - name: Build immutable publication input
+        env:
+          GH_TOKEN: ${{ github.token }}
+          GH_REPO: ${{ github.repository }}
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+          EXPECTED_HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+        run: bun .effx-tool/scripts/build-github-input.ts effx-diagnostics.json > effx-input.json
+      - name: Upload decoded analysis result
+        uses: actions/upload-artifact@v4
+        with:
+          name: effx-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}
+          path: effx-input.json
+          if-no-files-found: error
+          retention-days: 7
diff --git a/.github/workflows/effx-publish.yml b/.github/workflows/effx-publish.yml
new file mode 100644
index 0000000..739dd45
--- /dev/null
+++ b/.github/workflows/effx-publish.yml
@@ -0,0 +1,59 @@
+name: effx publish
+
+on:
+  workflow_run:
+    workflows: ["effx analyze"]
+    types: [completed]
+
+permissions:
+  actions: read
+  checks: write
+  contents: read
+  pull-requests: write
+
+jobs:
+  publish:
+    if: github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out immutable effx tool revision
+        uses: actions/checkout@v4
+        with:
+          repository: phibkro/oxlint-effect-plugin
+          ref: 0e41f6b05b08f7ecfd91c7e55e77e98d8b650b02
+          path: .effx-tool
+          persist-credentials: false
+      - name: Set up Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: 1.3.13
+      - name: Download unprivileged analysis artifact
+        env:
+          GH_TOKEN: ${{ github.token }}
+          GH_REPO: ${{ github.repository }}
+          RUN_ID: ${{ github.event.workflow_run.id }}
+        run: gh run download "$RUN_ID" --repo "$GH_REPO" --dir .effx-input
+      - name: Select and verify immutable analysis input
+        env:
+          EXPECTED_HEAD_SHA: ${{ github.event.workflow_run.head_sha }}
+        run: |
+          input="$(find .effx-input -name effx-input.json -type f -print -quit)"
+          test -n "$input"
+          test "$(find .effx-input -name effx-input.json -type f | wc -l)" -eq 1
+          test "$(jq -r '.expectedHeadSha' "$input")" = "$EXPECTED_HEAD_SHA"
+          test "$(jq -r '.observedHeadSha' "$input")" = "$EXPECTED_HEAD_SHA"
+          cp "$input" .effx-input.json
+      - name: Install the reviewed effx tool
+        working-directory: .effx-tool
+        run: |
+          bun install --frozen-lockfile --ignore-scripts
+          bun run build
+      - name: Produce fail-closed publication plan
+        run: bun .effx-tool/dist/cli.js github plan < .effx-input.json > .effx-plan.json
+      - name: Publish canonical Check and review comments
+        env:
+          GH_TOKEN: ${{ github.token }}
+          GH_REPO: ${{ github.repository }}
+          EXPECTED_HEAD_SHA: ${{ github.event.workflow_run.head_sha }}
+          PR_NUMBER: ${{ github.event.workflow_run.pull_requests[0].number }}
+        run: bun .effx-tool/scripts/publish-github-plan.ts .effx-plan.json
diff --git a/docs/effx-migration-guide.md b/docs/effx-migration-guide.md
new file mode 100644
index 0000000..18d4aee
--- /dev/null
+++ b/docs/effx-migration-guide.md
@@ -0,0 +1,18 @@
+# effx migration review
+
+Classification: `agent-migration-opt-in-required`
+
+This repository declares an Effect release outside the exact reviewed effx release `4.0.0-beta.107`. The pull request adds the two-stage effx review integration, but it does not change dependencies or application source.
+
+## Required migration review
+
+1. Review every Effect-family dependency against `4.0.0-beta.107`.
+2. Supply exact reviewed targets for every `@effect/*` package. Do not guess package versions.
+3. Run this repository's package-manager, type, lint, and test checks.
+4. Opt in explicitly before an agent changes application source.
+
+## Limits
+
+- No mechanical migration was proven safe from the observed dependency declarations.
+- The integration performs syntax and scope enforcement. Effect-specific typed diagnostics remain owned by `@effect/tsgo`.
+- The publication workflow uses only artifacts from the unprivileged analysis workflow and binds publication to the immutable pull-request head SHA.