chore: v2.8.13 — Artifacts reinstall/edit/installs, agent steps in chat, pick a local file to attach, Windows paths as links

- Chat: an Agent step shows its task, status and tool calls and opens its conversation in place; Windows paths (E:\…, C:/…) in replies open as files
- Prompt: attach a file on this computer by path (native picker), clearer too-large messages
- Artifacts: edit title/description and a skill's files (new snapshot), Reinstall, install history, Hub-only rows, skills installed into ~/.claude/skills and ~/.agents/skills
- Files: batch upload of small files in one extract
- AI Tools: npm install falls back to --prefix ~/.local when the global prefix is not writable

client/src/components/artifacts/ArtifactAddPanels.tsx

@@ -14,6 +14,7 @@
  *   and tick the ones to add; or type `name@marketplace` by hand, which is
  *   also where a link the server cannot read (ssh, a private repo) ends up.
  * - `FileUploadPanel` — one file from the user's computer (≤ 25 MB).
+ * - `SkillNameField`/`splitSkillMd` — also used by the page's skill editor.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -24,8 +25,8 @@ import { api, type MarketplaceInfo } from "../../lib/api";
 import type { Lane } from "../../lib/types";
 import { toast } from "../../lib/toast";
 
-const field = "w-full rounded border border-border bg-surface-1 px-2 py-1 text-sm text-fg-primary";
-const label = "block text-[11px] font-medium text-fg-secondary";
+const field = "input w-full";
+const label = "block text-xs text-fg-secondary";
 const hint = "text-[11px] text-fg-muted";
 
 /** The server's skill folder rule (server/lib/artifacts.js `skillSlug`). */
@@ -155,8 +156,19 @@ function Tabs<T extends string>({
   );
 }
 
+/** SKILL.md split for editing: its frontmatter `name`/`description` and the body. */
+export function splitSkillMd(text: string): { name: string; description: string; body: string } {
+  const clean = text.replace(/^\uFEFF/, "");
+  const fm = /^---\r?\n[\s\S]*?\r?\n---[^\n]*(\r?\n|$)/.exec(clean);
+  return {
+    name: frontmatterField(clean, "name"),
+    description: frontmatterField(clean, "description"),
+    body: (fm ? clean.slice(fm[0].length) : clean).replace(/^\s+/, ""),
+  };
+}
+
 /** The name field with the folder/command it becomes. */
-function SkillNameField({
+export function SkillNameField({
   value,
   onChange,
   disabled,
@@ -175,7 +187,7 @@ function SkillNameField({
         {t("skill.name")}
         {required ? " *" : ""}
         <input
-          className={`${field} mt-0.5`}
+          className={`${field} mt-1`}
           value={value}
           disabled={disabled}
           placeholder="release-notes"
@@ -296,7 +308,7 @@ export function SkillAddPanel({
       <label className={label}>
         {t("skill.description")}
         <textarea
-          className={`${field} mt-0.5`}
+          className={`${field} mt-1`}
           rows={2}
           value={description}
           disabled={many}
@@ -310,7 +322,7 @@ export function SkillAddPanel({
       <label className={label}>
         {t("form.title")}
         <input
-          className={`${field} mt-0.5`}
+          className={`${field} mt-1`}
           value={title}
           disabled={many}
           onChange={(e) => setTitle(e.target.value)}
@@ -452,7 +464,10 @@ export function SkillAddPanel({
             />
           )}
           {meta}
-          <div className="flex justify-end">
+          <div className="flex justify-end gap-2 pt-1">
+            <button type="button" className="btn-ghost text-sm" onClick={onClose} disabled={busy}>
+              {t("form.cancel")}
+            </button>
             <button
               type="submit"
               className="btn-primary text-sm"
@@ -489,7 +504,7 @@ export function SkillAddPanel({
           <label className={label}>
             {t("skill.description")} *
             <textarea
-              className={`${field} mt-0.5`}
+              className={`${field} mt-1`}
               rows={2}
               value={description}
               placeholder={t("skill.descriptionHint")}
@@ -499,7 +514,7 @@ export function SkillAddPanel({
           <label className={label}>
             {t("skill.content")} *
             <textarea
-              className={`${field} mt-0.5 font-mono text-xs`}
+              className={`${field} mt-1 font-mono text-xs`}
               rows={10}
               value={content}
               placeholder={t("skill.contentHint")}
@@ -509,12 +524,15 @@ export function SkillAddPanel({
           <label className={label}>
             {t("form.title")}
             <input
-              className={`${field} mt-0.5`}
+              className={`${field} mt-1`}
               value={title}
               onChange={(e) => setTitle(e.target.value)}
             />
           </label>
-          <div className="flex justify-end">
+          <div className="flex justify-end gap-2 pt-1">
+            <button type="button" className="btn-ghost text-sm" onClick={onClose} disabled={busy}>
+              {t("form.cancel")}
+            </button>
             <button
               type="submit"
               className="btn-primary text-sm"
@@ -534,7 +552,7 @@ export function SkillAddPanel({
       {mode === "existing" && (
         <div className="space-y-2">
           <select
-            className={field}
+            className="select w-full"
             aria-label={t("form.workspace")}
             value={laneId ?? ""}
             onChange={(e) => setLaneId(e.target.value ? Number(e.target.value) : null)}
@@ -696,7 +714,7 @@ export function PluginAddPanel({ onAdded, onClose }: { onAdded: () => void; onCl
       >
         <label className={label}>
           {t("plugin.link")}
-          <div className="mt-0.5 flex gap-2">
+          <div className="mt-1 flex gap-2">
             <input
               className={field}
               value={link}
@@ -777,7 +795,15 @@ export function PluginAddPanel({ onAdded, onClose }: { onAdded: () => void; onCl
                   </li>
                 ))}
               </ul>
-              <div className="flex justify-end">
+              <div className="flex justify-end gap-2 pt-1">
+                <button
+                  type="button"
+                  className="btn-ghost text-sm"
+                  onClick={onClose}
+                  disabled={busy}
+                >
+                  {t("form.cancel")}
+                </button>
                 <button
                   type="button"
                   className="btn-primary text-sm"
@@ -853,7 +879,10 @@ export function PluginAddPanel({ onAdded, onClose }: { onAdded: () => void; onCl
               value={description}
               onChange={(e) => setDescription(e.target.value)}
             />
-            <div className="flex justify-end">
+            <div className="flex justify-end gap-2 pt-1">
+              <button type="button" className="btn-ghost text-sm" onClick={onClose} disabled={busy}>
+                {t("form.cancel")}
+              </button>
               <button
                 type="submit"
                 className="btn-primary text-sm"
@@ -902,7 +931,7 @@ export function FileUploadPanel({ onAdded }: { onAdded: () => void }) {
         <input
           type="file"
           data-testid="file-upload"
-          className="mt-0.5 block w-full text-xs text-fg-secondary"
+          className="mt-1 block w-full text-xs text-fg-secondary file:mr-3 file:cursor-pointer file:rounded-lg file:border file:border-border-light file:bg-surface-2 file:px-3 file:py-1.5 file:text-xs file:text-fg-primary hover:file:bg-surface-4"
           onChange={(e) => setFile(e.target.files?.[0] ?? null)}
         />
       </label>