Fix media drive not mounting after reboot (stale fstab entries)

Every fstab writer deduped on the exact line, so a stale entry for the
same mount point (e.g. the UUID of a pool that was since recreated)
survived forever. systemd-fstab-generator only creates one mount unit
per mount point and the FIRST line wins — if that line is stale, the
pool never mounts at boot, shows up as detached, and the user has to
re-import it every reboot (manual `mount -a` walks fstab sequentially,
so the import itself appeared to work).

All four writers (add-drive, create-pool, import-pool, jellyfin bind
mounts) now remove any existing entry for the target mount point
before appending the fresh line — idempotent and self-healing.

Also add a --version flag, stamped at build time via
-ldflags "-X main.version=...".

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

cmd/tuistream/main.go

@@ -23,11 +23,22 @@ import (
 	"tuistream/internal/tui"
 )
 
+// version is stamped at build time via:
+//
+//	-ldflags "-X main.version=v0.1.1"
+var version = "dev"
+
 func main() {
 	readOnly := flag.Bool("read-only", false,
 		"open the TUI without checking for root; only the inventory views work")
+	showVersion := flag.Bool("version", false, "print the version and exit")
 	flag.Parse()
 
+	if *showVersion {
+		fmt.Println("tuistream", version)
+		return
+	}
+
 	if !*readOnly && os.Geteuid() != 0 {
 		fmt.Fprintln(os.Stderr,
 			"tuistream needs administrator rights to install Jellyfin, edit /etc/fstab, etc.")

internal/drives/mount.go

@@ -199,7 +199,13 @@ case "$FS" in
 esac
 LINE="UUID=${UUID}  ${MP}  ${FS}  ${OPTS}  0  2"
 
-grep -qF -- "$LINE" /etc/fstab || printf '%%s\n' "$LINE" >> /etc/fstab
+# Drop any stale entries for this mount point first (e.g. the UUID of a drive
+# that has since been reformatted). Duplicate mount points make
+# systemd-fstab-generator keep only the FIRST line — if that one is stale the
+# drive never mounts at boot.
+awk -v mp="$MP" '$0 ~ /^[[:space:]]*#/ || $2 != mp' /etc/fstab > /etc/fstab.tuistream \
+  && cat /etc/fstab.tuistream > /etc/fstab && rm -f /etc/fstab.tuistream
+printf '%%s\n' "$LINE" >> /etc/fstab
 echo "fstab entry: $LINE"
 `,
 			shellQuote(target),

internal/drives/pool.go

@@ -253,7 +253,13 @@ fi
 OPTS="defaults,nofail,x-gvfs-show,x-gvfs-name=$LABEL"
 LINE="UUID=${UUID}  ${MP}  btrfs  ${OPTS}  0  0"
 
-grep -qF -- "$LINE" /etc/fstab || printf '%%s\n' "$LINE" >> /etc/fstab
+# Drop any stale entries for this mount point first (e.g. the UUID of a pool
+# that has since been recreated). Duplicate mount points make
+# systemd-fstab-generator keep only the FIRST line — if that one is stale the
+# pool never mounts at boot and shows up as detached again every reboot.
+awk -v mp="$MP" '$0 ~ /^[[:space:]]*#/ || $2 != mp' /etc/fstab > /etc/fstab.tuistream \
+  && cat /etc/fstab.tuistream > /etc/fstab && rm -f /etc/fstab.tuistream
+printf '%%s\n' "$LINE" >> /etc/fstab
 echo "fstab: $LINE"
 `,
 			shellQuote(devs[0]),

internal/drives/pool_import.go

@@ -169,7 +169,13 @@ fi
 OPTS="defaults,nofail,x-gvfs-show,x-gvfs-name=$LABEL"
 LINE="UUID=${UUID}  ${MP}  btrfs  ${OPTS}  0  0"
 
-grep -qF -- "$LINE" /etc/fstab || printf '%%s\n' "$LINE" >> /etc/fstab
+# Drop any stale entries for this mount point first (e.g. the UUID of a pool
+# that has since been recreated). Duplicate mount points make
+# systemd-fstab-generator keep only the FIRST line — if that one is stale the
+# pool never mounts at boot and shows up as detached again every reboot.
+awk -v mp="$MP" '$0 ~ /^[[:space:]]*#/ || $2 != mp' /etc/fstab > /etc/fstab.tuistream \
+  && cat /etc/fstab.tuistream > /etc/fstab && rm -f /etc/fstab.tuistream
+printf '%%s\n' "$LINE" >> /etc/fstab
 echo "fstab: $LINE"
 `,
 			shellQuote(dev),

internal/jellyfin/storage.go

@@ -131,8 +131,13 @@ install -d %[2]s %[3]s`,
 		{
 			Title: "Add bind mounts to /etc/fstab",
 			Cmd: bashAsRoot(fmt.Sprintf(`
-grep -qsF ' %[2]s ' /etc/fstab || printf '%%s %%s none bind,x-systemd.requires-mounts-for=%[5]s 0 0\n' %[1]s %[2]s >> /etc/fstab
+# Drop any stale bind entries for these targets first (e.g. pointing at a
-grep -qsF ' %[4]s ' /etc/fstab || printf '%%s %%s none bind,x-systemd.requires-mounts-for=%[5]s 0 0\n' %[3]s %[4]s >> /etc/fstab`,
+# previous media drive) — duplicate mount points make systemd-fstab-generator
+# keep only the FIRST line, so a stale one would win at boot.
+awk -v a=%[2]s -v b=%[4]s '$0 ~ /^[[:space:]]*#/ || ($2 != a && $2 != b)' /etc/fstab > /etc/fstab.tuistream \
+  && cat /etc/fstab.tuistream > /etc/fstab && rm -f /etc/fstab.tuistream
+printf '%%s %%s none bind,x-systemd.requires-mounts-for=%[5]s 0 0\n' %[1]s %[2]s >> /etc/fstab
+printf '%%s %%s none bind,x-systemd.requires-mounts-for=%[5]s 0 0\n' %[3]s %[4]s >> /etc/fstab`,
 				shellQuote(data), defaultDataDir,
 				shellQuote(cache), defaultCacheDir,
 				mp)),