🔖 Prepare release v4.0.3

⚡️ A message from a fellow meat-based-AI ⚡️
- [❤️] Finely-crafted open-source tools like ast-merge (& many more) require time and effort.
- [❤️] Though I adore my work, it lacks financial sustainability.
- [❤️] Please, help me continue enhancing your tools by becoming a sponsor:
  - [💲] https://liberapay.com/pboling/donate
  - [💲] https://github.com/sponsors/pboling

Author: pboling

CHANGELOG.md

@@ -20,6 +20,25 @@ Please file a bug if you notice a violation of semantic versioning.
 
 ### Added
 
+### Changed
+
+### Deprecated
+
+### Removed
+
+### Fixed
+
+### Security
+
+## [4.0.3] - 2026-01-19
+
+- TAG: [v4.0.3][4.0.3t]
+- COVERAGE: 97.30% -- 2739/2815 lines in 53 files
+- BRANCH COVERAGE: 89.84% -- 893/994 branches in 53 files
+- 98.81% documented
+
+### Added
+
 - **`Ast::Merge::RSpec::MergeGemRegistry.register_known_gems`**: Selective registration of known merge gems for RSpec dependency tags
   - Allows test suites to explicitly register only the merge gems they need, avoiding overhead of registering all known gems
   - Usage in `spec/config/tree_haver.rb`: `MergeGemRegistry.register_known_gems(:prism_merge, :commonmarker_merge)`
@@ -34,14 +53,6 @@ Please file a bug if you notice a violation of semantic versioning.
   - Pattern: Load tree_haver/rspec → Load ast/merge/rspec → Register known gems → Load library
   - Applied to markdown-merge and markly-merge; other merge gems should follow this pattern
 
-### Deprecated
-
-### Removed
-
-### Fixed
-
-### Security
-
 ## [4.0.2] - 2026-01-12
 
 - TAG: [v4.0.2][4.0.2t]

Gemfile.lock

@@ -30,7 +30,7 @@ GIT
 PATH
   remote: .
   specs:
-    ast-merge (4.0.2)
+    ast-merge (4.0.3)
       tree_haver (~> 5.0, >= 5.0.2)
       version_gem (~> 1.1, >= 1.1.9)
 
@@ -413,7 +413,7 @@ CHECKSUMS
   ansi (1.5.0) sha256=5408253274e33d9d27d4a98c46d2998266fd51cba58a7eb9d08f50e57ed23592
   appraisal2 (3.0.0) sha256=f1b4e742cf8ebef5e9fbb76c416a8c16edfe0727964a5a17b44adfc37b701aed
   ast (2.4.3) sha256=954615157c1d6a382bc27d690d973195e79db7f55e9765ac7c481c60bdb4d383
-  ast-merge (4.0.2)
+  ast-merge (4.0.3)
   backports (3.25.3) sha256=94298d32dc3c40ca15633b54e282780b49e2db0c045f602ea1907e4f63a17235
   benchmark (0.5.0) sha256=465df122341aedcb81a2a24b4d3bd19b6c67c1530713fd533f3ff034e419236c
   bigdecimal (3.3.1) sha256=eaa01e228be54c4f9f53bf3cc34fe3d5e845c31963e7fcc5bedb05a4e7d52218

docs/Ast.html

@@ -169,7 +169,7 @@ <h5 class="example_title"><div class='inline'><p>How merge gems register (in the
 </div>
 
       <div id="footer">
-  Generated on Mon Jan 19 21:22:37 2026 by
+  Generated on Mon Jan 19 23:45:36 2026 by
   <a href="https://yardoc.org" title="Yay! A Ruby Documentation Tool" target="_parent">yard</a>
   0.9.38 (ruby-4.0.0).
 </div>

docs/Ast/Merge.html

@@ -158,7 +158,7 @@ <h2>
 </div>
 
       <div id="footer">
-  Generated on Mon Jan 19 21:22:37 2026 by
+  Generated on Mon Jan 19 23:45:36 2026 by
   <a href="https://yardoc.org" title="Yay! A Ruby Documentation Tool" target="_parent">yard</a>
   0.9.38 (ruby-4.0.0).
 </div>