Merge upstream/main into bench/scale-test-suite to resolve conflicts

Merged both the PR's benchmark suite additions (psutil dep, pytest
markers, --ignore=tests/benchmarks) and upstream's coverage changes
(pytest-cov, --cov-fail-under=30, coverage config) so both coexist.

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "mempalace"
-version = "3.0.0"
+version = "3.0.12"
 description = "Give your AI a memory — mine projects and conversations into a searchable palace. No API key required."
 readme = "README.md"
 requires-python = ">=3.9"
@@ -38,11 +38,11 @@ Repository = "https://github.com/milla-jovovich/mempalace"
 mempalace = "mempalace:main"
 
 [project.optional-dependencies]
-dev = ["pytest>=7.0", "ruff>=0.4.0", "psutil>=5.9"]
+dev = ["pytest>=7.0", "pytest-cov>=4.0", "ruff>=0.4.0", "psutil>=5.9"]
 spellcheck = ["autocorrect>=2.0"]
 
 [dependency-groups]
-dev = ["pytest>=7.0", "ruff>=0.4.0", "psutil>=5.9"]
+dev = ["pytest>=7.0", "pytest-cov>=4.0", "ruff>=0.4.0", "psutil>=5.9"]
 
 [build-system]
 requires = ["hatchling"]
@@ -71,3 +71,14 @@ markers = [
     "slow: tests that take more than 30 seconds",
     "stress: destructive scale tests (100K+ drawers)",
 ]
+
+[tool.coverage.run]
+source = ["mempalace"]
+
+[tool.coverage.report]
+fail_under = 30
+show_missing = true
+exclude_lines = [
+    "if __name__",
+    "pragma: no cover",
+]