Release 2026.07.11: bump version and add sdist excludes

Bump CalVer to reflect the SchDocument refactor and macOS resolution fixes.
Add [tool.hatch.build.targets.sdist] excludes so the published archive ships
only src + packaging metadata — keeping CLAUDE.md, docs/ (agent threads with
operator paths), docs-site/, and tests/ out of the sdist.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "mckicad"
-version = "2026.03.03"
+version = "2026.07.11"
 description = "MCP server for KiCad electronic design automation"
 readme = "README.md"
 license = { text = "MIT" }
@@ -25,7 +25,6 @@ dependencies = [
     "pyyaml>=6.0.3",
     "defusedxml>=0.7.1",
     "kicad-python>=0.5.0",
-
     "requests>=2.32.5",
 ]
 
@@ -38,6 +37,25 @@ mckicad = "mckicad.server:main"
 [tool.hatch.build.targets.wheel]
 packages = ["src/mckicad"]
 
+[tool.hatch.build.targets.sdist]
+# Ship only what a consumer needs. Keep operator-private context, the docs
+# site, test fixtures (which can carry real system output), and local dev
+# files out of the published archive.
+exclude = [
+    "CLAUDE.md",
+    ".env",
+    ".env.example",
+    ".mcp.json",
+    "docs/",
+    "docs-site/",
+    "tests/",
+    ".github/",
+    ".pytest_cache/",
+    ".ruff_cache/",
+    "dist/",
+    "build/",
+]
+
 [dependency-groups]
 dev = [
     "pytest>=8.4.2",