fix(skills-hub): show every catalog source on /docs/skills (skills.sh, ClawHub, browse.sh, OpenAI, …) (#32336)

The Skills Hub page was stuck on a stale Feb 25 snapshot, showing only Built-in
+ Optional + Anthropic + LobeHub. The unified index already has 2078 skills
from skills.sh / ClawHub / LobeHub / GitHub taps / Claude Marketplace, and
BrowseShSource adds another ~330 — none of it was reaching the page.

Changes:

- website/scripts/extract-skills.py: read website/static/api/skills-index.json
  (the unified multi-source catalog, rebuilt twice daily) as the canonical
  external source. Keep the legacy skills/index-cache/ fallback for offline
  builds. Add friendly per-source labels (skills.sh, ClawHub, browse.sh,
  OpenAI, HuggingFace, Anthropic, LobeHub, etc.) and per-entry installCmd.
- website/src/pages/skills/index.tsx: add source pills + ordering for the 11
  new sources; render installCmd from the index entry.
- website/scripts/prebuild.mjs: when no local skills-index.json exists, fetch
  the live one from hermes-agent.nousresearch.com so local 'npm run build'
  matches production without burning GitHub API quota.
- scripts/build_skills_index.py: crawl BrowseShSource so browse.sh entries
  land in the unified index. Adjust source_order.
- tools/skills_hub.py: GitHubSource.DEFAULT_TAPS — openai/skills moved its
  skills into skills/.curated/ and skills/.system/, so add both as explicit
  taps (the listing code skips dotted dirs by design). Drop
  VoltAgent/awesome-agent-skills (README-only, no SKILL.md files) and
  MiniMax-AI/cli (singular skill, not a tap directory). Net effect: github
  source jumps from 83 → 143 skills, with OpenAI properly included.
- .github/workflows/deploy-site.yml: build the unified index BEFORE running
  extract-skills.py — previous order meant extract-skills always fell back
  to the legacy cache. Drop the 'skip if file exists' guard; the file is
  gitignored and must be rebuilt every deploy.
- .github/workflows/skills-index.yml: drop the broken 'deploy-with-index'
  job (it cp'd 'landingpage/\*' which no longer exists, failing every cron
  run since the landingpage move). Replace it with a workflow_dispatch
  trigger of deploy-site.yml so the index refresh still reaches production
  on schedule.
- website/docs/user-guide/features/skills.md: drop VoltAgent from the
  default-taps doc list to match the code.

Before: 695 skills (Built-in 90, Optional 84, Anthropic 16, LobeHub 505).
After:  2168 skills across 9 source pills, including the 1212 skills.sh
        entries the user expected to see.

website/src/pages/skills/index.tsx

@@ -18,6 +18,8 @@ interface Skill {
   envVars?: string[];
   commands?: string[];
   docsPath?: string;
+  identifier?: string;
+  installCmd?: string;
 }
 
 const allSkills: Skill[] = skills as Skill[];
@@ -95,9 +97,96 @@ const SOURCE_CONFIG: Record<
     border: "rgba(167, 139, 250, 0.2)",
     icon: "\u{25A0}",
   },
+  "skills.sh": {
+    label: "skills.sh",
+    color: "#34d399",
+    bg: "rgba(52, 211, 153, 0.08)",
+    border: "rgba(52, 211, 153, 0.2)",
+    icon: "\u{2734}",
+  },
+  ClawHub: {
+    label: "ClawHub",
+    color: "#f472b6",
+    bg: "rgba(244, 114, 182, 0.08)",
+    border: "rgba(244, 114, 182, 0.2)",
+    icon: "\u{2726}",
+  },
+  "browse.sh": {
+    label: "browse.sh",
+    color: "#22d3ee",
+    bg: "rgba(34, 211, 238, 0.08)",
+    border: "rgba(34, 211, 238, 0.2)",
+    icon: "\u{29BF}",
+  },
+  OpenAI: {
+    label: "OpenAI",
+    color: "#10b981",
+    bg: "rgba(16, 185, 129, 0.08)",
+    border: "rgba(16, 185, 129, 0.2)",
+    icon: "\u{2737}",
+  },
+  HuggingFace: {
+    label: "HuggingFace",
+    color: "#fbbf24",
+    bg: "rgba(251, 191, 36, 0.08)",
+    border: "rgba(251, 191, 36, 0.2)",
+    icon: "\u{1F917}",
+  },
+  VoltAgent: {
+    label: "VoltAgent",
+    color: "#facc15",
+    bg: "rgba(250, 204, 21, 0.08)",
+    border: "rgba(250, 204, 21, 0.2)",
+    icon: "\u{26A1}",
+  },
+  GitHub: {
+    label: "GitHub",
+    color: "#94a3b8",
+    bg: "rgba(148, 163, 184, 0.08)",
+    border: "rgba(148, 163, 184, 0.2)",
+    icon: "\u{2756}",
+  },
+  "Well-Known": {
+    label: "Well-Known",
+    color: "#818cf8",
+    bg: "rgba(129, 140, 248, 0.08)",
+    border: "rgba(129, 140, 248, 0.2)",
+    icon: "\u{2756}",
+  },
+  gstack: {
+    label: "gstack",
+    color: "#fb923c",
+    bg: "rgba(251, 146, 60, 0.08)",
+    border: "rgba(251, 146, 60, 0.2)",
+    icon: "\u{2756}",
+  },
+  MiniMax: {
+    label: "MiniMax",
+    color: "#f87171",
+    bg: "rgba(248, 113, 113, 0.08)",
+    border: "rgba(248, 113, 113, 0.2)",
+    icon: "\u{2756}",
+  },
 };
 
-const SOURCE_ORDER = ["all", "built-in", "optional", "Anthropic", "LobeHub", "Claude Marketplace"];
+const SOURCE_ORDER = [
+  "all",
+  "built-in",
+  "optional",
+  "Anthropic",
+  "OpenAI",
+  "HuggingFace",
+  "skills.sh",
+  "ClawHub",
+  "browse.sh",
+  "LobeHub",
+  "Claude Marketplace",
+  "VoltAgent",
+  "Well-Known",
+  "GitHub",
+  "gstack",
+  "MiniMax",
+];
 
 function highlightMatch(text: string, query: string): React.ReactNode {
   if (!query || !text) return text;
@@ -250,7 +339,7 @@ function SkillCard({
               </div>
             )}
             <div className={styles.installHint}>
-              <code>hermes skills install {skill.name}</code>
+              <code>{skill.installCmd || `hermes skills install ${skill.name}`}</code>
             </div>
             {skill.docsPath && (
               <a