Release v0.2.0

[claudecafe]

Release diffwalk 0.2.0 with explicit literal and Git pathspec selection for working-tree and staged captures.

• Replace inspect -- src/a.ts src/b.ts with inspect --path src/a.ts --path src/b.ts. The old syntax reports migration guidance; positional revisions remain supported.
• Add repeatable --pathspec for Git patterns, such as --pathspec ':(glob)src/**/*.ts'. --path and --pathspec are mutually exclusive.
• Add repeatable literal --exclude, composable with either selection mode after Git rename detection.
• Preserve detected renames across literal exclusions as “Moved to excluded path” or “Moved from excluded path”, explicitly omitting excluded content. Initial pathspec filtering can still lose rename relationships.

The release PR changes only the package version. The features passed independent acceptance and project checks before landing. Merge this PR manually after Project check passes, then run pnpm release:publish 44 to tag its exact merged commit and trigger the npm Publish workflow.