ci: bigger runner for build, bigger ccache for tests (#8)

Speed up CI via two independent levers:

1. MainDistributionPipeline.yml: route the linux_amd64 / linux_arm64
   build matrix entries to 16-core Depot managed runners
   (depot-ubuntu-24.04-16 / depot-ubuntu-24.04-arm-16) via the upstream
   workflow's runners JSON input. Cuts the build from ~25-30min to
   ~5-10min, including cold-cache cases.

   Requires PostHog/ducklake to be added to the Depot GitHub App
   installation; until then the build jobs will queue-time-out at 10m.

2. Five per-PR test workflows (Catalogs, ConfigTests, DeletionVectors,
   MinIO, NoInline): bump hendrikmuhs/ccache-action max-size from the
   500MB default to 1.5G. DuckDB's full release build produces 1-2 GB
   of object files, so the default forces aggressive LRU eviction and
   keeps effective hit rate at 30-50%. 1.5G fits most of the build,
   pushing warm-cache hit rates into the 80-90% range.

   5 caches x 1.5G = 7.5 GB, leaving headroom in the 10 GB GitHub
   Actions cache budget per repo. Cold-cache cases (DuckDB submodule
   bumps) will still take ~25-30min but are infrequent.

Debug.yml is now nightly-only after #9 and is left alone.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

Author: bill-ph

.github/workflows/Catalogs.yml

@@ -58,6 +58,7 @@ jobs:
       with:
         key: ${{ github.job }}
         save: ${{ github.ref == 'refs/heads/main' || github.repository != 'duckdb/ducklake' }}
+        max-size: "1.5G"
 
     - name: Setup vcpkg
       uses: lukka/run-vcpkg@v11.1

.github/workflows/ConfigTests.yml

@@ -45,6 +45,7 @@ jobs:
       with:
         key: ${{ github.job }}
         save: ${{ github.ref == 'refs/heads/main' || github.repository != 'duckdb/ducklake' }}
+        max-size: "1.5G"
 
     - name: Setup vcpkg
       uses: lukka/run-vcpkg@v11.1

.github/workflows/DeletionVectors.yml

@@ -45,6 +45,7 @@ jobs:
       with:
         key: ${{ github.job }}
         save: ${{ github.ref == 'refs/heads/main' || github.repository != 'duckdb/ducklake' }}
+        max-size: "1.5G"
 
     - name: Setup vcpkg
       uses: lukka/run-vcpkg@v11.1

.github/workflows/MainDistributionPipeline.yml

@@ -32,6 +32,8 @@ jobs:
       duckdb_version: ${{ needs.get-duckdb-version.outputs.duckdb_version }}
       ci_tools_version: main
       extension_name: ducklake
+      runners: |
+        {"linux_amd64": "depot-ubuntu-24.04-16", "linux_arm64": "depot-ubuntu-24.04-arm-16"}
 
   duckdb-next-deploy:
     name: Deploy extension binaries

.github/workflows/MinIO.yml

@@ -62,6 +62,8 @@ jobs:
       - name: Setup Ccache
         uses: hendrikmuhs/ccache-action@main
         continue-on-error: true
+        with:
+          max-size: "1.5G"
 
       - name: Build extension
         env:

.github/workflows/NoInline.yml

@@ -45,6 +45,7 @@ jobs:
       with:
         key: ${{ github.job }}
         save: ${{ github.ref == 'refs/heads/main' || github.repository != 'duckdb/ducklake' }}
+        max-size: "1.5G"
 
     - name: Setup vcpkg
       uses: lukka/run-vcpkg@v11.1