docs(usability): reorganize README.md tools by category — move get_activities and like_post to Wall & Activities (v1.4.4)

- Consolidate wall post and activity tools in dedicated section
- Remove duplicate entries from Lists & Tasks
- Update README version header to v1.4.3
- Bump pyproject.toml to v1.4.4
- Fix unused import in find_category_param.py

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -10,6 +10,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 This project follows Semantic Versioning (SemVer).
 Breaking changes (removed tools, changed parameters) increment the major version.
 
+## [1.4.4] – 2026-04-20
+
+### Updated
+- **README.md restructuring** — consolidated `get_activities` and `like_post` into Wall & Activities section
+  - `get_activities` moved from Lists & Tasks to Wall & Activities (belongs with wall functionality)
+  - `like_post` reference removed from Lists & Tasks (consolidated in one section)
+  - Version bump in README header: v1.3.1 → v1.4.3
+
+### Notes
+- Documentation-only release; no code changes
+- All tools remain functional and unchanged
+- Improves UX by grouping related wall/activity tools in one section
+
 ## [1.4.3] – 2026-04-18
 
 ### Improved