fix: mochi repo target path, remove unsupported xfs from GUI, add filesystem to TUI summary

Author: MochiOS Team

installer.py

@@ -652,11 +652,12 @@ def do_install(target="/mnt/mochios", config=None, log_fn=None, abort_flag=None)
         # ensure [mochi] repo is available for pacstrap
         mochi_conf = "\n[mochi]\nSigLevel = Optional TrustAll\nServer = https://github.com/iluxz/MochiOS/raw/gh-pages/os/x86_64\n"
         already_has_mochi = False
-        if os.path.exists("/etc/pacman.conf"):
-            with open("/etc/pacman.conf") as check:
+        target_pacman = f"{target}/etc/pacman.conf"
+        if os.path.exists(target_pacman):
+            with open(target_pacman) as check:
                 already_has_mochi = "[mochi]" in check.read()
         if not already_has_mochi:
-            with open("/etc/pacman.conf", "a") as f:
+            with open(target_pacman, "a") as f:
                 f.write(mochi_conf)
 
         pacstrap_base(target, log_fn, de=config.get("de", "kde"), greeter=config.get("greeter", "sddm"), bootloader=config.get("bootloader", "limine"), kernels=config.get("kernels", ["linux"]), extra_pkgs=repo_extra, abort_flag=abort_flag, filesystem=filesystem)

mochiinstall_app.py

@@ -384,6 +384,7 @@ def step_summary(self) -> None:
             Static(""),
             Static(f"  hostname:    [white]{c['hostname']}[/]"),
             Static(f"  disk:        [red]{c['disk'] or 'NOT SELECTED'}[/] {'[red bold](required!)' if not disk_set else '(will be wiped)'}"),
+            Static(f"  filesystem:  [white]{c.get('filesystem', 'btrfs')}[/]"),
             Static(f"  desktop:     [white]{c['de']}[/]"),
             Static(f"  greeter:     [white]{c.get('greeter', 'sddm')}[/]"),
             Static(f"  kernels:     [white]{kernels}[/]"),

mochiinstall_gui.py

@@ -349,7 +349,6 @@ def __init__(self, nightly):
         for i, (n, d) in enumerate([
             ("btrfs", "snapshots, compression, subvolumes"),
             ("ext4",  "simple, reliable, widely used"),
-            ("xfs",   "good for large files, media workloads"),
         ]):
             rb = QRadioButton(f"  {n}  \u2014  {d}")
             self._fs.addButton(rb, i)
@@ -642,7 +641,7 @@ def nextId(self):
         p = self.page(self.currentId())
 
         if isinstance(p, FSPage):
-            self._cfg["fs"] = ["btrfs", "ext4", "xfs"][p._fs.checkedId()]
+            self._cfg["fs"] = ["btrfs", "ext4"][p._fs.checkedId()]
             self._cfg["bl"] = ["limine", "grub", "mochiboot"][p._bl.checkedId()]
         elif isinstance(p, KernelPage):
             self._cfg["kernels"] = [