perf(auto-reply): avoid skill scans for inline directives

src/auto-reply/reply/get-reply-directives.ts

@@ -169,27 +169,34 @@ export async function resolveReplyDirectives(params: {
     surface: command.surface,
     commandSource: ctx.CommandSource,
   });
-  const shouldResolveSkillCommands =
-    allowTextCommands && command.commandBodyNormalized.includes("/");
-  const skillCommands = shouldResolveSkillCommands
-    ? listSkillCommandsForWorkspace({
-        workspaceDir,
-        cfg,
-        skillFilter,
-      })
-    : [];
   const reservedCommands = new Set(
     listChatCommands().flatMap((cmd) =>
       cmd.textAliases.map((a) => a.replace(/^\//, "").toLowerCase()),
     ),
   );
-  for (const command of skillCommands) {
-    reservedCommands.add(command.name.toLowerCase());
-  }
-  const configuredAliases = Object.values(cfg.agents?.defaults?.models ?? {})
+
+  const rawAliases = Object.values(cfg.agents?.defaults?.models ?? {})
     .map((entry) => entry.alias?.trim())
     .filter((alias): alias is string => Boolean(alias))
     .filter((alias) => !reservedCommands.has(alias.toLowerCase()));
+
+  // Only load workspace skill commands when we actually need them to filter aliases.
+  // This avoids scanning skills for messages that only use inline directives like /think:/verbose:.
+  const skillCommands =
+    allowTextCommands && rawAliases.length > 0
+      ? listSkillCommandsForWorkspace({
+          workspaceDir,
+          cfg,
+          skillFilter,
+        })
+      : [];
+  for (const command of skillCommands) {
+    reservedCommands.add(command.name.toLowerCase());
+  }
+
+  const configuredAliases = rawAliases.filter(
+    (alias) => !reservedCommands.has(alias.toLowerCase()),
+  );
   const allowStatusDirective = allowTextCommands && command.isAuthorizedSender;
   let parsedDirectives = parseInlineDirectives(commandText, {
     modelAliases: configuredAliases,