Entire CLI is a production-grade Go application that captures, stores, resumes, and reviews AI coding-assistant sessions inside git repositories. It installs git hooks into agent configurations (Claude Code, Codex, Cursor, Copilot CLI, OpenCode, Pi, Antigravity, Factory Droid), intercepting lifecycle events to record transcripts, token usage, and subagent tasks, then condenses that data into signed checkpoints stored as git refs or on a metadata branch, linked to user commits via Entire-Checkpoint trailers. A second binary, git-remote-entire, is a git remote helper speaking the smart-HTTP protocol for entire:// URLs against a hosted control plane with OAuth device flow, cross-jurisdiction redirects, and replica failover. The architecture is a thick client (Cobra-based CLI) plus a git remote helper, with unusually clean subsystem boundaries for a tool of this size: a root-level transcript library (stdlib-only) normalizes heterogeneous agent JSONL formats into a unified compact format; a root-level redaction library strips secrets and PII before anything is stored; per-agent adapters implement a capability-based interface; checkpoint storage is pluggable (legacy git-branch and per-ref backends); a strategy package owns session lifecycle and condensation; and internal packages provide secure HTTP, token storage, discovery, and process management. The CLI also includes a subprocess plugin system, Bubble Tea TUI flows, and an e2e harness that drives real agent binaries. This is purely an application repository rather than data research; its transcript processing borrows data-engineering ideas (normalization, compaction, redaction) but serves an operational developer-tool purpose. Engineering rigor is exceptional: nearly every source file has companion tests, and source-level guard tests fail the build when security conventions are violated (no raw http.Client usage, hash comparisons must use .Equal, all userdirs callers must be audited). Filesystem access is root-anchored with O_NOFOLLOW, TLS redirect downgrades are rejected, and trust gates gate external-agent settings. Maintenance is active with a rapid release cadence and explicit migration paths for legacy backends, though the huge command surface, hand-maintained allowlists, and agent-version-coupled adapters are real long-term drift risks.