chore(v1.0.1): opus review findings — docstring confirmation patterns, pyproject.urls, gitignore fix, logging

**Critical:**
- Add IMPORTANT confirmation lines to toggle_task and like_post docstrings
- Add [project.urls] section with Gitea repository link to pyproject.toml

**Medium:**
- Fix .gitignore: test_*.py recursive pattern (remove leading slash)
- Add exception logging to clear_list() for failed deletions
- Update get_categories() docstring: clarify custom vs system category locale behavior
- Add Versioning Policy section to CHANGELOG.md

**Minor:**
- Fix CLI help text (remove "(read-only)" qualifier)
- Add language note to CLAUDE.md (German file, English code)
- Create tests/README.md with integration test documentation
- Update version to 1.0.1 in pyproject.toml

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

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "mcp-familywall"
-version = "1.0.0"
+version = "1.0.1"
 description = "MCP server for Family Wall — manage your family's circles, lists, tasks, recipes, and meal plan via Claude"
 readme = "README.md"
 requires-python = ">=3.12"
@@ -21,6 +21,9 @@ dependencies = [
     "rich>=13.0",
 ]
 
+[project.urls]
+Repository = "https://gitea.gecheckt.de/marcus/mcp-familywall"
+
 [project.optional-dependencies]
 dev = [
     "pytest>=8.0",