bump: 44.4.0 → 44.4.1

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: benjello

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## 44.4.1
+
+#### Performance improvements
+
+- Fix quadratic reconstruction cost in `as_of` forward simulations.
+  - In the typical GET(M-1) → compute → SET(M) monthly loop, `_set_as_of` was unconditionally clearing the snapshot cursor after each write, forcing the next `get_array(M)` to reconstruct from the base through all M patches — O(N + M·k) per step, quadratic overall.
+  - Root cause: `_reconstruct_at` advanced the snapshot to `instant` during the internal diff computation, so the invalidation guard `snapshot[0] >= instant` triggered on equality even for strictly forward writes.
+  - Fix: when the new patch is appended at the end of the list (forward-sequential SET), the snapshot is updated to the new state instead of being discarded. Retroactive (out-of-order) writes still invalidate the snapshot correctly.
+  - Benchmark (N=1M, forward simulation): 1 yr / 10% change ×1.4, 5 yr / 10% ×4.1, 5 yr / 30% ×5.4.
+
 ## 44.4.0 [#1366](https://github.com/openfisca/openfisca-core/pull/1366)
 
 #### Performance improvements

setup.py

@@ -61,6 +61,7 @@
 
 dev_requirements = [
     "black >=24.8.0, <25.0",
+    "pytest-benchmark >=4.0.0, <5.0",
     "codespell >=2.3.0, <3.0",
     "colorama >=0.4.4, <0.5",
     "darglint >=1.8.1, <2.0",
@@ -84,7 +85,7 @@
 
 setup(
     name="OpenFisca-Core",
-    version="44.4.0",
+    version="44.4.1",
     author="OpenFisca Team",
     author_email="contact@openfisca.org",
     classifiers=[