Publish CLI-Reference documentation

CLI-Reference.-.md

@@ -0,0 +1,64 @@
+# CLI reference
+
+Add `--json` anywhere in a command for machine-readable output.
+
+## Project and prompt lifecycle
+
+| Command | Purpose |
+|---|---|
+| `hop init [path]` | Initialize Hop without moving the Git branch or index |
+| `hop begin ...` | Desktop entry point: initialize if needed, capture prompt, continue session |
+| `hop prompt ...` | Controller-managed prompt or follow-up capture |
+| `hop checkpoint STATE` | Freeze current attempt progress |
+| `hop check STATE -- COMMAND...` | Validate an immutable checkpoint |
+| `hop propose [--summary TEXT] STATE` | Freeze a candidate proposal |
+| `hop land PROPOSAL [-- COMMAND...]` | Accept and synchronize the visible root |
+| `hop refresh PROPOSAL` | Explicitly prepare/reuse conflict reconciliation |
+
+`hop start` aliases `hop prompt`; `hop reconcile` aliases `hop refresh`.
+
+## Controller and synchronization commands
+
+| Command | Purpose |
+|---|---|
+| `hop accept PROPOSAL [-- COMMAND...]` | Accept internally without changing visible files |
+| `hop sync` | Materialize the current accepted tree from a safe accepted ancestor |
+| `hop undo` | Create a forward-only acceptance that restores the previous accepted tree |
+| `hop doctor [--repair]` | Validate database/object/ref consistency |
+
+## Inspection
+
+| Command | Purpose |
+|---|---|
+| `hop status` | Accepted head, attempts, and visible-root status |
+| `hop graph` | State graph |
+| `hop state STATE` | One state and its provenance |
+| `hop env STATE` | Shell exports for an attempt |
+| `hop diff STATE` | Diff represented by a state |
+| `hop history` | Accepted lineage |
+| `hop version` | Installed version |
+
+## Skill distribution
+
+```bash
+hop skill install [--path SKILLS_DIR] [--force]
+hop skill print
+```
+
+Without `--path`, the skill installs under
+`${CODEX_HOME:-~/.codex}/skills/hop`.
+
+## Exit codes
+
+| Code | Meaning |
+|---:|---|
+| `0` | Success |
+| `1` | Git, SQLite, filesystem, or internal failure |
+| `2` | Invalid usage |
+| `20` | Merge conflict; reconciliation workspace was prepared |
+| `21` | Attempt or accepted head changed during compare-and-swap |
+| `22` | Validation command failed |
+| `23` | Visible-root divergence or overwrite collision |
+
+Exit `20` is a continuation signal for an agent, not a request for the user to
+manually merge files.