release(hotfix): prepare v0.7.5 benchmark-compatibility fix release

- Bump project version to 0.7.5 and mark this patch line as a hotfix release.

- Add docs/changelog/v0.7.5.md documenting the MinGW benchmark registration fix and impact scope.

- Update release index with v0.7.5 entry labeled as Hotfix.

- Refresh README update/benchmarking version labels to explicitly communicate the v0.7.5 hotfix context.

Author: sentomk

CMakeLists.txt

@@ -7,7 +7,7 @@ endif()
 
 # ========== Project ==========
 project(patternia
-  VERSION 0.7.4
+  VERSION 0.7.5
   DESCRIPTION "Header-only pattern matching library for modern C++"
   LANGUAGES CXX
 )

README.md

@@ -28,7 +28,7 @@
 
 ## *Update*
 
-- **Performance-focused update (v0.7.4)** — guarded/typed evaluation paths reduce redundant binding work, with expanded bind-count tests and variant benchmark stabilization for regression tracking.
+- **Hotfix update (v0.7.5)** — fixes MinGW benchmark registration compatibility in variant microbench setup while preserving the stable run profile.
 - **Variant matching is now supported (v0.7.x)** — including `type::is`, `type::as`, and `type::alt`.
 - **Planned change (v0.8.x)** — `match(x, cases(...))` will be removed.
 
@@ -353,11 +353,10 @@ ctest --test-dir build -R compile_fail --output-on-failure
 ctest --test-dir build --output-on-failure
 ```
 
-## *Benchmarking (v0.7.4)*
+## *Benchmarking (v0.7.5 Hotfix)*
 
-Patternia v0.7.4 keeps the heavy-bind benchmark path and adds a variant-focused
-microbench profile so dispatch-cost regressions are easier to detect and
-compare across runs.
+Patternia v0.7.5 hotfix keeps the same benchmark scenarios and stable profile,
+and fixes a MinGW compilation issue in variant benchmark registration.
 
 ### Heavy-Bind Principle
 

docs/changelog/releases.md

@@ -16,3 +16,4 @@
 - [v0.7.2](v0.7.2.md) - February 14, 2026
 - [v0.7.3](v0.7.3.md) - February 16, 2026
 - [v0.7.4](v0.7.4.md) - February 18, 2026
+- [v0.7.5](v0.7.5.md) - February 18, 2026 (Hotfix)

docs/changelog/v0.7.5.md

@@ -0,0 +1,43 @@
+# Patternia v0.7.5 Hotfix Release Note
+
+**Release Date:** February 18, 2026  
+**Version:** 0.7.5  
+**Type:** Hotfix
+
+---
+
+## Overview
+
+Patternia v0.7.5 is a hotfix release for v0.7.4. It fixes a benchmark
+registration issue that can fail compilation on MinGW toolchains.
+
+---
+
+## What Is Fixed
+
+### Benchmark Registration Compatibility (MinGW)
+- Replaced `apply_stable_variant_profile(BENCHMARK(...))` registration style
+  with direct `BENCHMARK(...)->...` chained configuration.
+- Preserved the same stable variant benchmark profile:
+  nanosecond unit, minimum run time, repetitions, and aggregate-only reporting.
+
+### Benchmark Warning Cleanup
+- Updated the alternating-hot variant microbench path to avoid the deprecated
+  const-reference `DoNotOptimize` usage.
+
+---
+
+## Impact
+
+- API surface: unchanged.
+- Runtime semantics: unchanged.
+- Build behavior: benchmark target now compiles on MinGW where v0.7.4 could
+  fail.
+
+---
+
+## Implementation Notes
+
+- `bench/bench_match_variant.cpp`
+  - Fixed benchmark macro registration pattern for compatibility.
+  - Kept benchmark profile semantics unchanged.