[feat] tiled fixed size list array (PDX-style)

.github/workflows/fuzz.yml

@@ -213,6 +213,42 @@ jobs:
       gh_token: ${{ secrets.GITHUB_TOKEN }}
       incident_io_alert_token: ${{ secrets.INCIDENT_IO_ALERT_TOKEN }}
 
+  # ============================================================================
+  # Tiled Fixed-Size List Fuzzer
+  # ============================================================================
+  tiled_fsl_fuzz:
+    name: "Tiled Fixed-Size List Fuzz"
+    uses: ./.github/workflows/run-fuzzer.yml
+    with:
+      fuzz_target: tiled_fsl
+      jobs: 4
+    secrets:
+      R2_FUZZ_ACCESS_KEY_ID: ${{ secrets.R2_FUZZ_ACCESS_KEY_ID }}
+      R2_FUZZ_SECRET_ACCESS_KEY: ${{ secrets.R2_FUZZ_SECRET_ACCESS_KEY }}
+
+  report-tiled-fsl-fuzz-failures:
+    name: "Report Tiled Fixed-Size List Fuzz Failures"
+    needs: tiled_fsl_fuzz
+    if: always() && needs.tiled_fsl_fuzz.outputs.crashes_found == 'true'
+    permissions:
+      issues: write
+      contents: read
+      id-token: write
+      pull-requests: read
+    uses: ./.github/workflows/report-fuzz-crash.yml
+    with:
+      fuzz_target: tiled_fsl
+      crash_file: ${{ needs.tiled_fsl_fuzz.outputs.first_crash_name }}
+      artifact_url: ${{ needs.tiled_fsl_fuzz.outputs.artifact_url }}
+      artifact_name: tiled_fsl-crash-artifacts
+      logs_artifact_name: tiled_fsl-logs
+      branch: ${{ github.ref_name }}
+      commit: ${{ github.sha }}
+    secrets:
+      claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+      gh_token: ${{ secrets.GITHUB_TOKEN }}
+      incident_io_alert_token: ${{ secrets.INCIDENT_IO_ALERT_TOKEN }}
+
   # ============================================================================
   # Compress Roundtrip Fuzzer
   # ============================================================================

Cargo.toml

@@ -62,6 +62,7 @@ members = [
     "encodings/bytebool",
     "encodings/parquet-variant",
     "encodings/onpair",
+    "encodings/tiled-fsl",
     # Benchmarks
     "benchmarks/lance-bench",
     "benchmarks/compress-bench",
@@ -325,6 +326,7 @@ vortex-sequence = { version = "0.1.0", path = "encodings/sequence", default-feat
 vortex-session = { version = "0.1.0", path = "./vortex-session", default-features = false }
 vortex-sparse = { version = "0.1.0", path = "./encodings/sparse", default-features = false }
 vortex-tensor = { version = "0.1.0", path = "./vortex-tensor", default-features = false }
+vortex-tiled-fsl = { version = "0.1.0", path = "./encodings/tiled-fsl", default-features = false }
 vortex-utils = { version = "0.1.0", path = "./vortex-utils", default-features = false }
 vortex-zigzag = { version = "0.1.0", path = "./encodings/zigzag", default-features = false }
 vortex-zstd = { version = "0.1.0", path = "./encodings/zstd", default-features = false }

encodings/tiled-fsl/Cargo.toml

@@ -0,0 +1,36 @@
+[package]
+name = "vortex-tiled-fsl"
+authors = { workspace = true }
+categories = { workspace = true }
+description = "Two-dimensional tiled encoding for primitive Vortex fixed-size lists"
+edition = { workspace = true }
+homepage = { workspace = true }
+include = { workspace = true }
+keywords = { workspace = true }
+license = { workspace = true }
+readme = { workspace = true }
+repository = { workspace = true }
+rust-version = { workspace = true }
+version = { workspace = true }
+
+[lints]
+workspace = true
+
+[dependencies]
+prost = { workspace = true }
+vortex-array = { workspace = true }
+vortex-buffer = { workspace = true }
+vortex-error = { workspace = true }
+vortex-mask = { workspace = true }
+vortex-session = { workspace = true }
+
+[dev-dependencies]
+divan = { workspace = true }
+mimalloc = { workspace = true }
+rstest = { workspace = true }
+vortex-array = { workspace = true, features = ["_test-harness"] }
+vortex-fastlanes = { workspace = true }
+
+[[bench]]
+name = "tiled_fsl"
+harness = false