diff --git a/.github/actions/build-wheel/action.yml b/.github/actions/build-wheel/action.yml
new file mode 100644
index 000000000..9977b3124
--- /dev/null
+++ b/.github/actions/build-wheel/action.yml
@@ -0,0 +1,54 @@
+name: Build ECC-Tools Wheel
+description: CMake build + auditwheel repair + smoke test. Requires manylinux_2_34_x86_64 container.
+
+runs:
+  using: composite
+  steps:
+    - name: Install system dependencies
+      shell: bash
+      run: |
+        dnf install -y epel-release
+        dnf config-manager --set-enabled crb || true
+        dnf install -y \
+          cmake ninja-build pkgconfig patchelf \
+          boost-devel cairo-devel gflags-devel glog-devel \
+          flex flex-devel bison eigen3-devel gtest-devel \
+          tbb-devel hwloc-devel libcurl-devel libunwind-devel \
+          metis-devel gmp-devel tcl-devel \
+          unzip zip
+
+    - name: Setup Python 3.11
+      shell: bash
+      run: echo "/opt/python/cp311-cp311/bin" >> "$GITHUB_PATH"
+
+    - name: Setup Rust
+      uses: dtolnay/rust-toolchain@stable
+
+    - name: Setup sccache
+      uses: mozilla-actions/sccache-action@v0.0.9
+
+    - name: Setup uv
+      uses: astral-sh/setup-uv@v5
+      with:
+        version: latest
+        enable-cache: true
+
+    - name: Install Python dev dependencies
+      shell: bash
+      run: |
+        uv sync --all-groups --python 3.11
+        echo "${{ github.workspace }}/.venv/bin" >> "$GITHUB_PATH"
+
+    - name: Restore CMake build cache
+      uses: actions/cache@v4
+      with:
+        path: build
+        key: cmake-${{ runner.os }}-${{ hashFiles('CMakeLists.txt', 'src/**/CMakeLists.txt') }}
+        restore-keys: |
+          cmake-${{ runner.os }}-
+
+    - name: Build repaired wheel
+      shell: bash
+      env:
+        SCCACHE_GHA_ENABLED: "true"
+      run: .github/scripts/build-wheel.sh
diff --git a/.github/scripts/build-wheel.sh b/.github/scripts/build-wheel.sh
new file mode 100755
index 000000000..689c91151
--- /dev/null
+++ b/.github/scripts/build-wheel.sh
@@ -0,0 +1,114 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Build ecc-tools wheel: CMake build -> collect .so -> uv build -> auditwheel repair -> smoke test
+# Intended to run inside manylinux_2_34_x86_64 container or equivalent.
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
+
+cd "$REPO_ROOT"
+
+die() { echo "ERROR: $1" >&2; exit 1; }
+
+require_cmd() {
+    command -v "$1" >/dev/null 2>&1 || die "required command not found: $1"
+}
+
+# Validate environment
+[[ "${OSTYPE:-}" == linux* ]] || die "wheel build is only supported on Linux"
+
+PYTHON3="${PYTHON3:-$(command -v python3 || true)}"
+[[ -x "${PYTHON3:-}" ]] || die "python3 not found"
+
+for cmd in cmake ninja auditwheel uv sha256sum; do
+    require_cmd "$cmd"
+done
+
+# CMake configure
+echo "[build-wheel] CMake configure"
+cmake_launcher_args=()
+if command -v sccache >/dev/null 2>&1; then
+    cmake_launcher_args+=(
+        -DCMAKE_CXX_COMPILER_LAUNCHER=sccache
+        -DCMAKE_C_COMPILER_LAUNCHER=sccache
+    )
+    echo "[build-wheel] sccache enabled"
+fi
+
+cmake -B build -G Ninja \
+    -DBUILD_ECOS=ON \
+    -DBUILD_PYTHON=ON \
+    -DBUILD_STATIC_LIB=OFF \
+    -DCOMPATIBILITY_MODE=ON \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DPython3_EXECUTABLE="$PYTHON3" \
+    -DPython3_ROOT_DIR="$("$PYTHON3" -c "import sys; print(sys.prefix)")" \
+    -DPython3_FIND_STRATEGY=LOCATION \
+    "${cmake_launcher_args[@]}"
+
+# CMake build
+echo "[build-wheel] CMake build ($(nproc) jobs)"
+cmake --build build --target ecc_py -j"$(nproc)"
+
+# Collect artifacts
+ECC_PY_ABI="$("$PYTHON3" -c "import sysconfig; print(sysconfig.get_config_var('EXT_SUFFIX'))")"
+ecc_py_so="$(find build bin -name "ecc_py${ECC_PY_ABI}" -print -quit 2>/dev/null)"
+[[ -n "$ecc_py_so" ]] || die "ecc_py${ECC_PY_ABI} not found in build/ or bin/"
+echo "[build-wheel] Found: $ecc_py_so"
+cp -f "$ecc_py_so" "ecc_tools_bin/"
+
+# Build raw wheel
+echo "[build-wheel] Building raw wheel"
+raw_out="dist/wheel/raw"
+mkdir -p "$raw_out"
+uv build --wheel --out-dir "$raw_out"
+
+raw_whl="$(find "$raw_out" -name 'ecc_tools-*.whl' -print -quit)"
+[[ -n "$raw_whl" ]] || die "raw wheel not found in $raw_out"
+echo "[build-wheel] Raw wheel: $raw_whl"
+
+# auditwheel repair
+echo "[build-wheel] auditwheel show/repair"
+repair_out="dist/wheel/repaired"
+report_out="dist/wheel/reports"
+mkdir -p "$repair_out" "$report_out"
+
+show_report="$report_out/show.txt"
+{
+    echo "=== $(basename "$raw_whl") ==="
+    auditwheel show "$raw_whl"
+    echo
+} > "$show_report"
+
+auditwheel repair "$raw_whl" -w "$repair_out"
+
+repaired_whl="$(find "$repair_out" -name 'ecc_tools-*.whl' -print -quit)"
+[[ -n "$repaired_whl" ]] || die "no repaired ecc_tools wheel found in $repair_out"
+
+# Smoke test
+echo "[build-wheel] Running smoke test"
+smoke_dir="$(mktemp -d)"
+trap 'rm -rf "$smoke_dir"' EXIT
+
+"$PYTHON3" -m pip install --target "$smoke_dir/site" "$repair_out"/ecc_tools-*.whl
+PYTHONPATH="$smoke_dir/site" "$PYTHON3" -c "
+from ecc_tools_bin import ecc_py
+
+required = ['flow_init', 'flow_exit', 'db_init', 'def_init', 'lef_init',
+            'def_save', 'run_placer', 'run_cts', 'run_rt', 'run_drc',
+            'run_filler', 'init_floorplan', 'report_db', 'feature_summary']
+missing = [f for f in required if not callable(getattr(ecc_py, f, None))]
+assert not missing, f'missing or non-callable bindings: {missing}'
+
+print(f'ecc_py smoke test passed: {len(required)} bindings verified')
+"
+
+# Checksums
+sha256sum "$repair_out"/*.whl > dist/wheel/SHA256SUMS
+
+echo "[build-wheel] done"
+echo "[build-wheel] raw wheels:      $raw_out"
+echo "[build-wheel] repaired wheels: $repair_out"
+echo "[build-wheel] report:          $show_report"
+echo "[build-wheel] checksums:       dist/wheel/SHA256SUMS"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 000000000..8d96f2eaf
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+concurrency:
+  group: ci-${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-wheel:
+    name: Build Wheel
+    runs-on: ubuntu-latest
+    container: quay.io/pypa/manylinux_2_34_x86_64
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build wheel
+        uses: ./.github/actions/build-wheel
+
+      - name: Upload repaired wheel
+        uses: actions/upload-artifact@v4
+        with:
+          name: ecc-tools-wheel
+          path: dist/wheel/repaired/ecc_tools-*.whl
+          retention-days: 7
+          if-no-files-found: error
+
+      - name: Upload checksums
+        uses: actions/upload-artifact@v4
+        with:
+          name: checksums
+          path: dist/wheel/SHA256SUMS
+          retention-days: 7
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 000000000..2eab8015a
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,100 @@
+name: Release
+
+on:
+  push:
+    tags: ['v*']
+  workflow_dispatch:
+    inputs:
+      tag_name:
+        description: 'Tag to release (e.g., v0.1.0-alpha)'
+        required: true
+        default: 'v0.1.0-alpha'
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    name: Build Wheel
+    runs-on: ubuntu-latest
+    container: quay.io/pypa/manylinux_2_34_x86_64
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.tag_name || github.ref }}
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Build wheel
+        uses: ./.github/actions/build-wheel
+
+      - name: Upload wheel artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ecc-tools-wheel
+          path: |
+            dist/wheel/repaired/ecc_tools-*.whl
+            dist/wheel/SHA256SUMS
+
+  release:
+    name: Create Release
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.tag_name || github.ref }}
+          fetch-depth: 0
+
+      - name: Download wheel artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: ecc-tools-wheel
+          path: dist/wheel
+
+      - name: Determine tag version
+        id: version
+        run: |
+          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
+            FULL_TAG="${{ github.event.inputs.tag_name }}"
+            TAG_VERSION="${FULL_TAG#v}"
+          else
+            FULL_TAG="${GITHUB_REF_NAME}"
+            TAG_VERSION="${GITHUB_REF_NAME#v}"
+          fi
+          echo "version=$TAG_VERSION" >> "$GITHUB_OUTPUT"
+          echo "full_tag=$FULL_TAG" >> "$GITHUB_OUTPUT"
+
+      - name: Generate release notes
+        id: notes
+        run: |
+          PREV_TAG=$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null || echo "")
+          if [[ -n "$PREV_TAG" ]]; then
+            RANGE="${PREV_TAG}..HEAD"
+          else
+            RANGE="HEAD"
+          fi
+          {
+            echo "## Changes"
+            echo ""
+            git log --oneline --no-merges "$RANGE" | sed 's/^/- /'
+            echo ""
+            echo "## Checksums"
+            echo ""
+            echo '```'
+            cat dist/wheel/SHA256SUMS
+            echo '```'
+          } > release-notes.md
+          cat release-notes.md
+
+      - name: Create GitHub Release
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          gh release create "${{ steps.version.outputs.full_tag }}" \
+            --title "ecc-tools ${{ steps.version.outputs.full_tag }}" \
+            --notes-file release-notes.md \
+            dist/wheel/repaired/ecc_tools-*.whl \
+            dist/wheel/SHA256SUMS
diff --git a/.gitignore b/.gitignore
index 27fb474a9..09f3e91f2 100755
--- a/.gitignore
+++ b/.gitignore
@@ -25,7 +25,7 @@ rpt*/
 target/
 *-stamp/
 tmp/
-scripts
+/scripts
 *.patch
 CMakePresets.json
 .venv/
diff --git a/ecc_tools_bin/__init__.py b/ecc_tools_bin/__init__.py
new file mode 100644
index 000000000..502076f96
--- /dev/null
+++ b/ecc_tools_bin/__init__.py
@@ -0,0 +1,2 @@
+# Intentionally minimal — consumers import ecc_py directly:
+#   from ecc_tools_bin import ecc_py
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 000000000..f320872a1
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,30 @@
+[build-system]
+requires = ["uv_build>=0.8.5,<0.12"]
+build-backend = "uv_build"
+
+[project]
+name = "ecc-tools"
+version = "0.1.0-alpha"
+requires-python = ">=3.11"
+dependencies = []
+
+[tool.uv]
+build-backend.module-name = ["ecc_tools_bin"]
+build-backend.module-root = ""
+build-backend.source-exclude = [
+  "src/**",
+  "build/**",
+  "scripts/**",
+  ".github/**",
+  ".gitee/**",
+]
+build-backend.wheel-exclude = [
+  "src/**",
+  "build/**",
+  "scripts/**",
+  ".github/**",
+  ".gitee/**",
+]
+
+[dependency-groups]
+dev = ["auditwheel"]