* feat(bootstrap): add system gateway registry for installer defaults
Adds a read-only installer-seeded gateway registry that the CLI consults after per-user gateway config. The registry uses the same layout as per-user config with `active_gateway` at the root and `gateways/<name>/metadata.json` beneath it. By default the system config root is `/etc/openshell`, while `OPENSHELL_SYSTEM_GATEWAY_DIR` remains available as an override for packages that need a different location. User-managed gateways continue to shadow installer entries on name collision.
Originally-authored-by: Mark Shuttleworth <mark@ubuntu.com>
Signed-off-by: Alex Lewontin <alex.lewontin@canonical.com>
* feat(cli): show gateway config source in list and term
Expose whether a gateway registration comes from user or system config in `openshell gateway list`, the TUI gateway pane, and list JSON output. The CLI also refuses to remove system-managed registrations and the smoke tests cover the new list output.
Signed-off-by: Alex Lewontin <alex.lewontin@canonical.com>
* fix(bootstrap): preserve user shadowing on invalid metadata
Signed-off-by: Alex Lewontin <alex.lewontin@canonical.com>
* fix(cli): keep system fallback out of rollback state
* docs(gateway): describe system config fallback layout
* test(bootstrap): cover system gateway last_sandbox persistence
* test(gateway): cover system-only removal rejection
* fix(bootstrap): validate gateway names before path joins
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Signed-off-by: Alex Lewontin <alex.lewontin@canonical.com>
Alex Lewontin