Manifest package (5 tests): Manifest/Entry structs with YAML tags,
New(), Load(), Save() with atomic write.
Store package (11 tests): content-addressable blob store keyed by
SHA-256, Write/Read/Exists/Delete with atomic writes, two-level
directory layout, hash validation.
Both implemented in parallel worktrees and merged.
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>
