Fix Alpine install: enable community repo, make extras best-effort

- Enable Alpine community repo (vim/fzf live there, commented out by default).
- Split essential vs extra packages; extras (htop/neofetch/fzf) install
  best-effort so a missing neofetch (removed from Alpine 3.20+) does not abort.
- Make run() return its command's exit status explicitly so 'if run ...'
  guards work under 'set -e'.

install.sh

@@ -35,11 +35,14 @@ die()   { printf '\033[0;31m✘\033[0m  %s\n' "$1" >&2; exit 1; }
 
 run() {
     # Print the command, then run it (unless --dry-run).
+    # We capture the exit status explicitly so that a failing command does NOT
+    # trip the caller's 'set -e' inside 'if run ... ; then' constructs.
     if [ "$DRY_RUN" -eq 1 ]; then
         printf '   $ %s\n' "$*"
-    else
-        "$@"
+        return 0
     fi
+    "$@"
+    return $?
 }
 
 usage() {
@@ -102,14 +105,26 @@ install_packages() {
     EXTRA="htop neofetch fzf"
 
     if [ "$PKG" = "apk" ]; then
+        # On Alpine, vim/fzf live in the 'community' repo, which is commented
+        # out by default in /etc/apk/repositories. Enable it (idempotent).
+        info "Ensuring Alpine community repository is enabled"
+        run sed -i -E "s|^#(.*/community)$|\1|" /etc/apk/repositories
         run $MGR_UPDATE
-        run $MGR_ADD $ESSENTIAL $EXTRA
     else
         run $MGR_UPDATE
+    fi
+
+    info "Installing essential packages"
     run $MGR_ADD $ESSENTIAL
-        # Newer Debian dropped neofetch from the repos; don't fail the whole run on it.
+
+    # Extras (htop, neofetch, fzf) are best-effort: a missing one must not
+    # abort the whole bootstrap (e.g. neofetch was dropped from Alpine 3.20+,
+    # and Debian/Ubuntu increasingly ship it as 'neofetch' but sometimes omit it).
     info "Installing extra packages (best-effort)"
-        run $MGR_ADD $EXTRA || warn "Some extra packages failed to install (non-fatal)."
+    if run $MGR_ADD $EXTRA; then
+        ok "Extra packages installed"
+    else
+        warn "Some extra packages failed to install (non-fatal)."
     fi
 }