refactor!: port shell scripts to Python package

Bash scripts were untestable and duplicated device/LUKS/mount logic;
the lim/ package centralizes it behind one subprocess wrapper and a
YAML image catalog (single point of truth).

BREAKING CHANGE: scripts/*.sh removed. Use `lim --type <cmd>`; new
types mount/umount/single-boot/raid1-boot/lock/unlock/import/export
replace direct script calls. --extra is deprecated and ignored.

- distributions.yml + lim/catalog.py hold the image catalog (PyYAML)
- pytest suite: 102 tests with mocked subprocess (tests/unit) and a
  250-line max file-length guard (tests/lint)
- ruff strict (select ALL), GitHub Actions CI, Dependabot; Travis gone
- Makefile: install (symlink ~/.local/bin/lim) and test targets
- fixes over bash: SUDO_USER-aware chown, mmcblk/nvme partition paths,
  sha512 checksum support, whole-pipeline failure detection, blkid
  UUID fallback for pre-mounted images, conditional fstab seeding for
  PARTUUID/LABEL images, clean errors for missing binaries

lim/image/choosers.py

@@ -0,0 +1,111 @@
+"""Interactive selection of the distribution image to install."""
+
+from lim import catalog, runner, ui
+from lim.errors import LimError
+from lim.image.plan import ImagePlan
+
+
+def choose_arch(plan: ImagePlan) -> None:
+    version = ui.ask("Which Raspberry Pi will be used (e.g.: 1, 2, 3b, 3b+, 4...):")
+    entry = catalog.arch_rpi_images().get(version)
+    if entry is None:
+        raise LimError(f"Version {version} isn't supported.")
+    plan.raspberry_pi_version = version
+    plan.boot_size = "+500M"
+    plan.base_download_url = "http://os.archlinuxarm.org/os/"
+    plan.image_name = entry["image"]
+    plan.luks_memory_cost = entry["luks_memory_cost"]
+
+
+def choose_manjaro(plan: ImagePlan) -> None:
+    plan.boot_size = "+500M"
+    flavour = ui.ask("Which version(e.g.:architect,gnome) should be used:")
+    if flavour == "architect":
+        plan.image_checksum = "6b1c2fce12f244c1e32212767a9d3af2cf8263b2"
+        plan.base_download_url = (
+            "https://osdn.net/frs/redir.php?m=dotsrc&f=%2Fstorage%2Fg%2Fm%2Fma"
+            "%2Fmanjaro%2Farchitect%2F20.0%2F"
+        )
+        plan.image_name = "manjaro-architect-20.0-200426-linux56.iso"
+    elif flavour == "gnome":
+        release = ui.ask("Which release(e.g.:20,21,raspberrypi) should be used:")
+        entry = catalog.manjaro_gnome_releases().get(release)
+        if entry is None:
+            raise LimError(f"Gnome release {release} isn't supported.")
+        plan.image_checksum = entry.get("checksum")
+        plan.base_download_url = entry["url"]
+        plan.image_name = entry["image"]
+        plan.luks_memory_cost = entry.get("luks_memory_cost")
+        plan.raspberry_pi_version = entry.get("raspberry_pi_version")
+    else:
+        raise LimError(f"Manjaro version {flavour} isn't supported.")
+
+
+def choose_moode(plan: ImagePlan) -> None:
+    plan.boot_size = "+200M"
+    plan.image_checksum = "185cbc9a4994534bb7a4bc2744c78197"
+    plan.base_download_url = (
+        "https://github.com/moode-player/moode/releases/download/r651prod/"
+    )
+    plan.image_name = "moode-r651-iso.zip"
+
+
+def choose_retropie(plan: ImagePlan) -> None:
+    plan.boot_size = "+500M"
+    version = ui.ask("Which version(e.g.:1,2,3,4) should be used:")
+    entry = catalog.retropie_images().get(version)
+    if entry is None:
+        raise LimError(f"Version {version} isn't supported.")
+    plan.raspberry_pi_version = version
+    plan.base_download_url = (
+        "https://github.com/RetroPie/RetroPie-Setup/releases/download/4.8/"
+    )
+    plan.image_checksum = entry["checksum"]
+    plan.image_name = entry["image"]
+
+
+def choose_torbox(plan: ImagePlan) -> None:
+    plan.base_download_url = "https://www.torbox.ch/data/"
+    plan.image_name = "torbox-20220102-v050.gz"
+    plan.image_checksum = (
+        "0E1BA7FFD14AAAE5F0462C8293D95B62C3BF1D9E726E26977BD04772C55680D3"
+    )
+    plan.boot_size = "+200M"
+
+
+def choose_android_x86(plan: ImagePlan) -> None:
+    plan.base_download_url = (
+        "https://www.fosshub.com/Android-x86.html?dwl=android-x86_64-9.0-r2.iso"
+    )
+    plan.image_name = "android-x86_64-9.0-r2.iso"
+    plan.image_checksum = (
+        "f7eb8fc56f29ad5432335dc054183acf086c539f3990f0b6e9ff58bd6df4604e"
+    )
+    plan.boot_size = "+500M"
+
+
+DISTRIBUTION_CHOOSERS = {
+    "android-x86": choose_android_x86,
+    "torbox": choose_torbox,
+    "arch": choose_arch,
+    "manjaro": choose_manjaro,
+    "moode": choose_moode,
+    "retropie": choose_retropie,
+}
+
+
+def choose_linux_image(plan: ImagePlan) -> None:
+    distribution = ui.ask(
+        "Which distribution should be used [arch,moode,retropie,manjaro,torbox...]?"
+    )
+    chooser = DISTRIBUTION_CHOOSERS.get(distribution)
+    if chooser is None:
+        raise LimError(f"Distribution {distribution} isn't supported.")
+    plan.distribution = distribution
+    chooser(plan)
+
+
+def choose_local_image(plan: ImagePlan) -> None:
+    ui.info("Available images:")
+    runner.run(["ls", "-l", str(plan.image_folder)], check=False)
+    plan.image_name = ui.ask("Which image would you like to use?")