chore: sync version to 2.0.1 across all files

.serena/memories/release_process.md

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+# Release Process
+
+## Command
+Always use `make release` for releases, not manual version bumping.
+
+## Available Release Commands
+- `make release` - Interactive release with menu (patch/minor/major)
+- `make release-patch` - Bump patch version (X.Y.Z → X.Y.Z+1)
+- `make release-minor` - Bump minor version (X.Y.Z → X.Y+1.0)
+- `make release-major` - Bump major version (X.Y.Z → X+1.0.0)
+
+## What make release does:
+1. Checks git status is clean
+2. Verifies version consistency across files
+3. Runs complete test suite
+4. Runs all linters
+5. Calculates and prompts for new version
+6. Updates versions in all files:
+   - `lua/shellspec/init.lua` - M._VERSION
+   - `plugin/shellspec.vim` - g:shellspec_version
+   - `bin/shellspec-format` - version string
+7. Creates git commit with version bump
+8. Creates git tag (with v prefix, e.g., v2.0.3)
+9. Provides next steps for pushing
+
+## Manual Process (DO NOT USE)
+The old manual process was error-prone and didn't update all version files consistently.