Implement the store package with SHA-256 keyed blob storage using a
two-level directory layout (blobs/XX/YY/hash). Supports atomic writes
via temp file + rename, deduplication, and hash validation. Includes
comprehensive tests for round-trip, deduplication, existence checks,
deletion, and subdirectory creation.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Implements Manifest and Entry structs with YAML tags, New() constructor,
Load(path) for reading, and Save(path) with atomic write (temp file +
rename). Tests cover round-trip serialization, atomic save cleanup,
entry type invariants, nonexistent file error, and empty manifest.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Remove all old C++ source files, proto definitions, CMake build,
clang configs, IDE files, and Trunk linter config. Initialize Go
module (github.com/kisom/sgard) with cobra and yaml.v3 deps.
Set up cobra root command with --repo persistent flag.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
