fix(show): validate option combinations and support --ignore wildcards

- Reject invalid option combinations: --direct with --all/--platform/--available,
  --tree with --all/--available/--latest/--path, --self with package argument
- Reject unsupported --format values (only "text" and "json" allowed)
- Warn when --ignore is used without --outdated
- Support wildcard patterns in --ignore values via matches_wildcard

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2 files changed, 62 insertions, 11 deletions

diff --git a/crates/mozart/src/commands/require.rs b/crates/mozart/src/commands/require.rs
index 16d865f..ef5ff04 100644
--- a/crates/mozart/src/commands/require.rs
+++ b/crates/mozart/src/commands/require.rs
@@ -679,9 +679,10 @@ pub async fn execute(
                     eprintln!("Warning: Failed to revert composer.json: {revert_err}");
                 }
                 if let Some(ref lock_content) = original_composer_lock
-                    && let Err(revert_err) = std::fs::write(&lock_path_for_backup, lock_content) {
-                        eprintln!("Warning: Failed to revert composer.lock: {revert_err}");
-                    }
+                    && let Err(revert_err) = std::fs::write(&lock_path_for_backup, lock_content)
+                {
+                    eprintln!("Warning: Failed to revert composer.lock: {revert_err}");
+                }
             }
             return Err(mozart_core::exit_code::bail(
                 mozart_core::exit_code::DEPENDENCY_RESOLUTION_FAILED,
diff --git a/crates/mozart/src/commands/show.rs b/crates/mozart/src/commands/show.rs
index 346c7b7..9eae36e 100644
--- a/crates/mozart/src/commands/show.rs
+++ b/crates/mozart/src/commands/show.rs
@@ -112,6 +112,54 @@ pub async fn execute(
         anyhow::bail!("Only one of --major-only, --minor-only or --patch-only can be used at once");
     }
 
+    // Fix 1: --direct with --all, --platform, or --available
+    if args.direct && (args.all || args.platform || args.available) {
+        anyhow::bail!(
+            "The --direct (-D) option is not usable in combination with --all, --platform (-p) or --available (-a)"
+        );
+    }
+
+    // Fix 2: --tree with --all or --available
+    if args.tree && (args.all || args.available) {
+        anyhow::bail!(
+            "The --tree (-t) option is not usable in combination with --all or --available (-a)"
+        );
+    }
+
+    // Fix 3: --tree with --latest
+    if args.tree && args.latest {
+        anyhow::bail!("The --tree (-t) option is not usable in combination with --latest (-l)");
+    }
+
+    // Fix 4: --tree with --path
+    if args.tree && args.path {
+        anyhow::bail!("The --tree (-t) option is not usable in combination with --path (-P)");
+    }
+
+    // Fix 5: --format with invalid value
+    if let Some(ref fmt) = args.format
+        && fmt != "text" && fmt != "json" {
+            anyhow::bail!(
+                "Unsupported format \"{}\". See help for supported formats.",
+                fmt
+            );
+        }
+
+    // Fix 6: --self with a package argument
+    if args.self_info && args.package.is_some() {
+        anyhow::bail!("You cannot use --self together with a package name");
+    }
+
+    // Fix 8: --ignore without --outdated warning
+    if !args.ignore.is_empty() && !args.outdated {
+        eprintln!(
+            "{}",
+            console_format!(
+                "<warning>You are using the option \"ignore\" for action other than \"outdated\", it will be ignored.</warning>"
+            )
+        );
+    }
+
     let working_dir = match &cli.working_dir {
         Some(dir) => PathBuf::from(dir),
         None => std::env::current_dir()?,
@@ -280,13 +328,14 @@ async fn show_installed_package_list(
         return Ok(());
     }
 
-    // Build ignore set
-    let ignore_set: HashSet<String> = args.ignore.iter().map(|n| n.to_lowercase()).collect();
-
     // Gather entries (fetch latest if needed, apply outdated filter)
     let mut entries: Vec<InstalledListEntry> = Vec::new();
     for pkg in packages {
-        if ignore_set.contains(&pkg.name.to_lowercase()) {
+        if args
+            .ignore
+            .iter()
+            .any(|pattern| matches_wildcard(&pkg.name, pattern))
+        {
             continue;
         }
 
@@ -736,13 +785,14 @@ async fn show_locked_package_list(
         return Ok(());
     }
 
-    // Build ignore set
-    let ignore_set: HashSet<String> = args.ignore.iter().map(|n| n.to_lowercase()).collect();
-
     // Gather entries
     let mut entries: Vec<LockedListEntry> = Vec::new();
     for pkg in packages {
-        if ignore_set.contains(&pkg.name.to_lowercase()) {
+        if args
+            .ignore
+            .iter()
+            .any(|pattern| matches_wildcard(&pkg.name, pattern))
+        {
             continue;
         }