fix(zsh): preserve options for default completion

cli/tests/shell_completions_integration.rs

@@ -1137,6 +1137,7 @@ fn test_zsh_completion_init_integration() {
 
     // Stub `compadd`/`_files` to capture what the handler offers without
     // needing an interactive ZLE context. Drive with $words/$CURRENT.
+    // The fallback must preserve completion-friendly options for `_files`.
     // The init template calls `compadd -l -d <display-arr> -U -Q -S '' -a <inserts-arr>`.
     let test_script = format!(
         r#"#!/usr/bin/env zsh
@@ -1152,7 +1153,9 @@ compadd() {{
     print -r -- "[compadd:display] $d"
     print -r -- "[compadd:inserts] $i"
 }}
-_files() {{ print -r -- "[files-fallback]" }}
+_files() {{
+    print -r -- "[files-fallback] nomatch=$options[nomatch] extendedglob=$options[extendedglob]"
+}}
 
 words=(ex "")
 CURRENT=2
@@ -1161,6 +1164,10 @@ _usage_default_complete
 words=(ex "--f")
 CURRENT=2
 _usage_default_complete
+
+words=(plain "")
+CURRENT=2
+_usage_default_complete
 "#,
         bin_dir = bin_dir.display(),
         usage_dir = usage_bin.parent().unwrap().display(),
@@ -1189,6 +1196,10 @@ _usage_default_complete
         stdout.contains("[compadd:display]") && stdout.contains("--foo"),
         "expected --foo flag in compadd display, got: {stdout}"
     );
+    assert!(
+        stdout.contains("[files-fallback] nomatch=off extendedglob=on"),
+        "expected file fallback to disable nomatch and enable extendedglob, got: {stdout}"
+    );
 
     let _ = fs::remove_dir_all(&temp_dir);
 }

lib/src/complete/snapshots/usage__complete__zsh__tests__complete_zsh_init.snap

@@ -8,6 +8,7 @@ expression: "complete_zsh_init(\"usage\")"
 
 _usage_default_complete() {
     emulate -L zsh
+    setopt localoptions nonomatch extendedglob
     local cmd cmdpath
     cmd="${words[1]}"
     if [[ "$cmd" == */* ]]; then

lib/src/complete/zsh.rs

@@ -189,6 +189,7 @@ pub fn complete_zsh_init(usage_bin: &str) -> String {
 
 _usage_default_complete() {{
     emulate -L zsh
+    setopt localoptions nonomatch extendedglob
     local cmd cmdpath
     cmd="${{words[1]}}"
     if [[ "$cmd" == */* ]]; then