refactor(cli): sort all list outputs and agent names alphabetically

- update.ts: sort skill selection list alphabetically
- check.ts: sort results by status then name, sort agent names in locations
- install.ts: sort agent names in buildAgentSummary, sort --list output
- sync.ts: sort discovered skills by name before display

Ensures consistent alphabetical ordering across all CLI commands for
better user experience and predictability.

skillhub-cli/src/commands/check.ts

@@ -70,7 +70,7 @@ export function registerCheck(program: Command) {
             name,
             status: "ok",
             source: entry.source,
-            location: installedLocations.join(", "),
+            location: installedLocations.sort((a, b) => a.localeCompare(b)).join(", "),
           });
         } else {
           results.push({
@@ -86,11 +86,18 @@ export function registerCheck(program: Command) {
           results.push({
             name,
             status: "orphaned",
-            location: locations.join(", "),
+            location: locations.sort((a, b) => a.localeCompare(b)).join(", "),
           });
         }
       }
 
+      // Sort results: ok → missing → orphaned, then alphabetically by name
+      results.sort((a, b) => {
+        const order = { ok: 0, missing: 1, orphaned: 2 };
+        const diff = order[a.status] - order[b.status];
+        return diff !== 0 ? diff : a.name.localeCompare(b.name);
+      });
+
       if (opts.json) {
         console.log(JSON.stringify(results, null, 2));
         return;

skillhub-cli/src/commands/install.ts

@@ -180,15 +180,17 @@ function buildAgentSummary(targetAgents: AgentInfo[], mode: "symlink" | "copy",
   const universal = targetAgents.filter((a) => isUniversalForScope(a, isGlobal));
   const symlinked = targetAgents.filter((a) => !isUniversalForScope(a, isGlobal));
 
+  const sortNames = (agents: AgentInfo[]) => agents.map((a) => a.name).sort((a, b) => a.localeCompare(b));
+
   if (mode === "symlink") {
     if (universal.length > 0) {
-      lines.push(`  universal: ${universal.map((a) => a.name).join(", ")}`);
+      lines.push(`  universal: ${sortNames(universal).join(", ")}`);
     }
     if (symlinked.length > 0) {
-      lines.push(`  symlink → ${symlinked.map((a) => a.name).join(", ")}`);
+      lines.push(`  symlink → ${sortNames(symlinked).join(", ")}`);
     }
   } else {
-    lines.push(`  copy → ${targetAgents.map((a) => a.name).join(", ")}`);
+    lines.push(`  copy → ${sortNames(targetAgents).join(", ")}`);
   }
 
   return lines;
@@ -397,7 +399,8 @@ async function installFromRegistry(slug: string, opts: Record<string, string | s
   spinner.succeed(`Found ${skills.length} skill(s) in ${ns}/${actualSlug}`);
 
   if (opts.list) {
-    for (const s of skills) {
+    const sorted = [...skills].sort((a, b) => a.name.localeCompare(b.name));
+    for (const s of sorted) {
       info(`${s.name}`);
       dim(`  ${s.description}`);
     }
@@ -630,7 +633,8 @@ async function installFromGit(skillName: string, source: string, sourceType: Sou
   spinner.succeed(`Found ${skills.length} skill(s)`);
 
   if (opts.list) {
-    for (const s of skills) {
+    const sorted = [...skills].sort((a, b) => a.name.localeCompare(b.name));
+    for (const s of sorted) {
       info(`${s.name}`);
       dim(`  ${s.description}`);
     }

skillhub-cli/src/commands/sync.ts

@@ -49,7 +49,8 @@ export function registerSync(program: Command) {
 
         console.log("");
         info(`Found ${skills.length} skill(s):`);
-        for (const skill of skills) {
+        const sortedSkills = [...skills].sort((a, b) => a.name.localeCompare(b.name));
+        for (const skill of sortedSkills) {
           console.log(`  - ${skill.name} (${skill.description})`);
         }
         console.log("");

skillhub-cli/src/commands/update.ts

@@ -26,7 +26,7 @@ export function registerUpdate(program: Command) {
       }
 
       const lockedSkills = await getAllLockedSkills();
-      const allSkillNames = Object.keys(lockedSkills);
+      const allSkillNames = Object.keys(lockedSkills).sort((a, b) => a.localeCompare(b));
 
       if (allSkillNames.length === 0) {
         error("No skills in lock file.");