refactor txn visibility and gc rewrite policy

Author: abbycin

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
             arch: arm64
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
@@ -50,7 +50,7 @@ jobs:
             arch: x86_64
     timeout-minutes: 60
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
@@ -78,7 +78,7 @@ jobs:
     name: FreeBSD (x86_64)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Run tests in FreeBSD VM
         uses: vmactions/freebsd-vm@v1
@@ -96,7 +96,7 @@ jobs:
     name: Linux (ARM64 cross-compile)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable

CHANGELOG.md

@@ -1,3 +1,8 @@
+## [0.0.33] 2026-05-30
+### Changes
+- Refactored transaction write path to metadata-only visibility checks
+- Align GC victim selection and gates with intended semantics
+
 ## [0.0.32] 2026-05-12
 ### Changes
 - Removed undo replay path and moved transaction handling to abort-aware visibility with redo-only `WalUpdate`

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mace-kv"
-version = "0.0.32"
+version = "0.0.33"
 edition = "2024"
 rust-version = "1.95"
 authors = ["AbbyCin <abbytsing@gmail.com>"]
@@ -30,12 +30,6 @@ libc = "0.2.186"
 
 [dev-dependencies]
 logger = { path = "deps/logger" }
-criterion = { version = "0.8.2", features = ["html_reports"] }
-rayon = "1.12.0"
-
-[[bench]]
-name = "perf"
-harness = false
 
 [features]
 default = []

README.md

@@ -88,7 +88,6 @@ Mace is engineered for heavy workloads. For detailed performance analysis and co
 ## Validation
 
 - Correctness/crash matrix: `./scripts/prod_test.sh all 8`
-- Perf regression gate: `./scripts/perf_gate.sh compare`
 - Script details: [scripts/README.md](./scripts/README.md)
 
 ## Design Notes