docs(backup): describe manual restore flow (#86971)

* docs(backup): describe manual restore flow

* docs(backup): make restore copy-back fail closed

* docs(backup): make inspect-and-stage block fail closed

Add set -euo pipefail to the first restore staging snippet so a failed
openclaw backup verify stops before mktemp/tar extraction, matching the
fail-closed copy-back block. Addresses ClawSweeper P1 on docs/cli/backup.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* docs(backup): reconcile restore guidance with exclusions

Punchcard-Session: brisk-harbor-harbor-6w

* docs(backup): centralize archive restore guidance

Punchcard-Session: calm-cedar-workshop-by

---------

Co-authored-by: clawSean <260045960+clawSean@users.noreply.github.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: Vincent Koc <vincentkoc@ieee.org>

docs/cli/backup.md

@@ -4,6 +4,7 @@ read_when:
   - You want a first-class backup archive for local OpenClaw state
   - You need a compact, verified snapshot of one OpenClaw SQLite database
   - You want to preview which paths would be included before reset or uninstall
+  - You want to restore from a `.tar.gz` archive previously created by `openclaw backup`
 title: "Backup"
 ---
 
@@ -30,6 +31,8 @@ openclaw backup sqlite restore ~/Backups/openclaw-sqlite/<snapshot-id> --target
 Archive `create` and `verify`, plus SQLite `create`, `list`, `verify`, and
 `restore`, accept `--json` for one machine-readable result on stdout.
 
+OpenClaw does not currently provide an `openclaw backup restore` command. Follow [Restore a full archive](/install/backups#restore-a-full-archive) for the manual, manifest-driven copy-back flow.
+
 ## Notes
 
 - The archive embeds a `manifest.json` with the resolved source paths and archive layout.
@@ -138,3 +141,5 @@ Large workspaces are usually the main driver of archive size. Use `--no-include-
 ## Related
 
 - [CLI reference](/cli)
+- [Migrating an OpenClaw install](/install/migrating)
+- [Restore a full archive](/install/backups#restore-a-full-archive)