Note

Upgrades Zig to 0.15.2, updates stdin reading to use a buffered reader with takeDelimiter, and adds a Dockerfile for the new version.

• Build/Environment:
  • Upgrade Zig buildpack/version from zig-0.15 to zig-0.15.2 in compiled_starters/zig/codecrafters.yml and solutions/zig/01-cq2/code/codecrafters.yml.
  • Add dockerfiles/zig-0.15.2.Dockerfile to install Zig 0.15.2 and compile/cache the project.
• Code (Zig):
  • Adopt buffered stdin (readerStreaming with stdin_buffer) and use stdin.takeDelimiter('\n').
  • Update usage to handle optional input (input_slice.?).
  • In solutions/zig/01-cq2/code/src/main.zig, enable reading/matching logic; in starter/compiled templates, reflect new approach in commented scaffold.

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