chore: v2.8.15 — Oh My Pi login sharing, omp --allow-home, Markdown Preview default, first-login password

- omp-share.js: an admin's switch (S3) runs omp's own auth broker + gateway as
  the host on loopback; a member's omp pane reaches it as a scoped client keyed
  by its pane token (clients file = live omp panes only), runs on
  --model agenthub/<model>, never holds a credential.
- omp catalog: --allow-home, so a workspace at the account's home keeps its
  sessions there (they were recorded under a temp dir and dropped).
- Settings → Appearance → Open Markdown as: Preview (default) or Raw, for
  Files/Changes, the config viewer and a chat's file panel.
- First-login password change and password rules, avatar URLs, Artifacts
  "Mine" includes installed shared skills/plugins, a member's own hook pages.

client/src/components/artifacts/ArtifactAddPanels.tsx

@@ -20,7 +20,7 @@
 
 import { useEffect, useMemo, useRef, useState, type DragEvent } from "react";
 import { useTranslation } from "react-i18next";
-import { FileText, FolderOpen, Package, Sparkles, Upload, X } from "lucide-react";
+import { X } from "lucide-react";
 import { api, type MarketplaceInfo } from "../../lib/api";
 import type { Lane } from "../../lib/types";
 import { toast } from "../../lib/toast";
@@ -374,7 +374,6 @@ export function SkillAddPanel({
               dragging ? "border-accent bg-accent/10" : "border-border"
             }`}
           >
-            <Upload className="mx-auto mb-1 h-5 w-5 text-fg-muted" />
             <p className="text-xs text-fg-secondary">{t("skill.dropHint")}</p>
             <div className="mt-2 flex flex-wrap justify-center gap-2">
               <button
@@ -382,14 +381,14 @@ export function SkillAddPanel({
                 className="btn-ghost text-xs"
                 onClick={() => fileInput.current?.click()}
               >
-                <FileText className="h-3.5 w-3.5" /> {t("skill.pickFiles")}
+                {t("skill.pickFiles")}
               </button>
               <button
                 type="button"
                 className="btn-ghost text-xs"
                 onClick={() => folderInput.current?.click()}
               >
-                <FolderOpen className="h-3.5 w-3.5" /> {t("skill.pickFolder")}
+                {t("skill.pickFolder")}
               </button>
             </div>
             <input
@@ -569,7 +568,6 @@ export function SkillAddPanel({
             <ul className="max-h-72 space-y-0.5 overflow-auto">
               {skills.map((s) => (
                 <li key={`${s.from}:${s.name}`} className="flex items-center gap-2 text-xs">
-                  <Sparkles className="h-3 w-3 shrink-0 text-fg-muted" />
                   <span className="min-w-0 flex-1 truncate text-fg-secondary">{s.name}</span>
                   <span className="text-fg-muted">
                     {t(s.from === "user" ? "form.fromUser" : "form.fromWorkspace")}
@@ -746,10 +744,7 @@ export function PluginAddPanel({ onAdded, onClose }: { onAdded: () => void; onCl
       {info && (
         <div className="space-y-2" data-testid="market-plugins">
           <div>
-            <p className="text-sm font-medium text-fg-primary">
-              <Package className="mr-1 inline h-4 w-4 text-fg-muted" />
-              {info.name}
-            </p>
+            <p className="text-sm font-medium text-fg-primary">{info.name}</p>
             {info.description && <p className={hint}>{info.description}</p>}
           </div>
           {info.plugins.length === 0 ? (
@@ -949,7 +944,7 @@ export function FileUploadPanel({ onAdded }: { onAdded: () => void }) {
           className="btn-primary shrink-0 text-sm"
           disabled={busy || !file || tooBig}
         >
-          <Upload className="h-3.5 w-3.5" /> {t("file.upload")}
+          {t("file.upload")}
         </button>
       </div>
     </form>