librelad ef60cce98a feat(app): portable .lpapp export and import — phase 4
`libreportal app export <app>` writes one app to a single file;
`libreportal app import <file>` installs it here. This is the thing the
original request described as "upload or navigate to the backup file" — a
restic repository is not a file, but the want behind the phrasing is real.

The format is deliberately boring: gzipped tar of the app directory with
its .libreportal-manifest.json at the root. That manifest already records
size, images, volumes, databases and storage location, so import reuses
the phase-3 checks for free — refusing an app this version no longer
ships, or one that will not fit, before unpacking anything.

Export stops the app first. A tar of a running Postgres is a corrupt
Postgres, and a file that looks fine until you restore it is worse than a
refusal. tar runs as the owning user with --numeric-owner so container
sub-UIDs survive the round trip instead of being remapped through this
machine's /etc/passwd.

Import re-runs the normal install pipeline after unpacking, because the
compose still carries the SOURCE machine's ports, IPs and domains — that
pipeline is what re-allocates them here, and migrateUrlRewrite fixes the
host-bound CFG_* fields.

Documented throughout as a courier format, not a backup: no history, no
retention, no encryption. Importing under a different name is refused
outright rather than half-working — the CFG_<APP>_* namespace and compose
identities would all need rewriting, and `instance create` already
answers "a second copy".

Fixes a bug this surfaced: _appDirIntended did an indirect expansion on
CFG_<SLUG>_STORAGE without checking <SLUG> can be a variable name, so a
hyphenated or mistyped app name emitted "invalid variable name" and then
reported the misleading "storage location is not mounted" for an app that
simply did not exist.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-27 09:08:41 +01:00

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#!/bin/bash
# This file is auto-generated by generate_arrays.sh
# Do not edit manually - run './scripts/source/files/generate_arrays.sh run' to regenerate
app_scripts=(
"app/app_get_key_data.sh"
"app/app_portable.sh"
"app/app_scan_available.sh"
"app/app_status.sh"
"app/app_update_specifics.sh"
"app/auth_adapter.sh"
"app/install/app_install.sh"
)