ztk v0.3.1

What changed

• Corrects the issue #13 product miss: file-listing compression now preserves the names and paths the agent asked for instead of reducing listings to counts only.
• ls smart output now includes bounded names payloads.
• find output now includes the first matching paths before truncating.
• Added issue #13 regression tests for design-doc filenames and feature-file paths.
• Added ztk run --raw and ZTK_RAW=1 as explicit escape hatches for exact output.
• Updated the Homebrew tap to v0.3.1.

Verification

• zig build test with Zig 0.16.0
• zig build -Doptimize=ReleaseSmall with Zig 0.16.0
• zig build cross with Zig 0.16.0
• scripts/package-release.sh
• issue #13 ls fixture smoke via ztk filter ls
• issue #13 find fixture smoke via ztk filter find
• ztk run /bin/ls src preserves names in compact output
• ztk run --raw /bin/ls src preserves exact output
• brew fetch codejunkie99/ztk/ztk
• brew upgrade codejunkie99/ztk/ztk
• brew test codejunkie99/ztk/ztk
• ztk --version -> ztk 0.3.1