diff --git a/.github/actions/free-disk-space/action.yml b/.github/actions/free-disk-space/action.yml
new file mode 100644
index 00000000..3e2e999c
--- /dev/null
+++ b/.github/actions/free-disk-space/action.yml
@@ -0,0 +1,32 @@
+name: Free disk space
+description: >
+  Reclaim disk space on GitHub-hosted Ubuntu runners by removing large
+  preinstalled toolchains the build does not use. Needed because the
+  `--features embeddings-all` build (candle / tokenizers / hf-hub / image /
+  reqwest) plus the restored Rust build cache can otherwise exhaust the
+  runner's root disk ("No space left on device"). See issue #775.
+
+  Linux-only: the caller gates this with `if: runner.os == 'Linux'`. The
+  removed paths are unused by the Rust / Python / Node toolchains these jobs
+  rely on, so they are safe to delete.
+
+runs:
+  using: composite
+  steps:
+    - name: Free disk space
+      shell: bash
+      run: |
+        echo "Disk usage before cleanup:"
+        df -h /
+        # Remove large preinstalled toolchains the build never touches. Each
+        # `|| true` keeps the step succeeding even if a path is already absent
+        # (paths differ slightly between runner images).
+        sudo rm -rf /usr/share/dotnet || true
+        sudo rm -rf /usr/local/lib/android || true
+        sudo rm -rf /opt/ghc || true
+        sudo rm -rf /usr/local/.ghcup || true
+        sudo rm -rf /opt/hostedtoolcache/CodeQL || true
+        # Reclaim space held by cached Docker images (none of these jobs use Docker).
+        sudo docker image prune --all --force || true
+        echo "Disk usage after cleanup:"
+        df -h /
diff --git a/.github/workflows/periodic.yml b/.github/workflows/periodic.yml
index 01a737f4..d0b0a29c 100644
--- a/.github/workflows/periodic.yml
+++ b/.github/workflows/periodic.yml
@@ -36,6 +36,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -83,6 +87,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@v1
         with:
@@ -126,6 +134,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -174,6 +186,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -222,6 +238,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -270,6 +290,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
@@ -323,6 +347,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up Node.js
         uses: actions/setup-node@v6
         with:
@@ -366,6 +394,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
@@ -411,6 +443,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up PHP
         uses: shivammathur/setup-php@v2
         with:
diff --git a/.github/workflows/regression.yml b/.github/workflows/regression.yml
index 01c50267..e4d6eaae 100644
--- a/.github/workflows/regression.yml
+++ b/.github/workflows/regression.yml
@@ -176,6 +176,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -224,6 +228,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@v1
         with:
@@ -268,6 +276,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -317,6 +329,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -366,6 +382,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -415,6 +435,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
@@ -469,6 +493,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up Node.js
         uses: actions/setup-node@v6
         with:
@@ -542,6 +570,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
@@ -589,6 +621,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up PHP
         uses: shivammathur/setup-php@v2
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 30523b34..25bfe727 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -37,6 +37,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -84,6 +88,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@v1
         with:
@@ -127,6 +135,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -175,6 +187,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -223,6 +239,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Install protoc
         uses: ./.github/actions/install-protoc
         with:
@@ -271,6 +291,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
@@ -324,6 +348,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up Node.js
         uses: actions/setup-node@v6
         with:
@@ -367,6 +395,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
@@ -413,6 +445,10 @@ jobs:
       - name: Run checkout
         uses: actions/checkout@v6
 
+      - name: Free disk space
+        if: runner.os == 'Linux'
+        uses: ./.github/actions/free-disk-space
+
       - name: Set up PHP
         uses: shivammathur/setup-php@v2
         with: