Community Hub: list the built-in skills as installed

docs/changelog.json

@@ -1,4 +1,10 @@
 [
+  {
+    "date": "2026-10-13",
+    "area": "Skills",
+    "title": "Five everyday skills in the Community Hub, and the built-in ones listed as installed",
+    "summary": "The Shell:B community skills now include playbooks for everyday work: job applications (finding openings, tailoring a CV and cover letter, interview practice), research with sources, feedback on your writing, summarizing documents and meetings, and drafting emails. Install them from Tools & Connectors → Community. The two skills that come with Shell:B, Verify chat and Audit code, are in the collection too, and the Hub now shows them as already installed instead of offering an install that would fail."
+  },
   {
     "date": "2026-10-13",
     "area": "Kiosk",

server/community.py

@@ -440,6 +440,9 @@ def _installed() -> dict:
     for name, o in (db.kv_get("skill_origins", {}) or {}).items():
         if o.get("itemId") and (skills.SKILLS / name / "SKILL.md").is_file():
             out[o["itemId"]] = {"kind": "skill", "name": name, "sha": o.get("sha", "")}
+        elif o.get("source") == "builtin" and (skills.SKILLS / name / "SKILL.md").is_file():
+            # the skills Shell:B ships (verify-chat, audit-code) are mirrored in Shell-B-Skills: list them as installed
+            out.setdefault(f"skill:shellb-skills:skills/{name}", {"kind": "skill", "name": name, "sha": "", "builtin": True})
     import mcp_hub
     for cfg in mcp_hub.configs():
         com = cfg.get("community") or {}
@@ -541,6 +544,8 @@ async def install(item_id: str, option: str = "", values: dict | None = None, na
         target = skills.slug(name or r["name"])
         mine = skills.origin(target)
         if (skills.SKILLS / target).exists() and mine.get("itemId") != item_id:
+            if mine.get("source") == "builtin":
+                raise ValueError(f"{target!r} comes with Shell:B and is already installed; to try this copy, give it another name")
             raise ValueError(f"You already have a skill called {target!r}; give this one another name")
         h = hashlib.sha1((src / "SKILL.md").read_bytes()).hexdigest()
         await asyncio.to_thread(skills.install_tree, src, target, f"community:{r['source_id']}", enable_skill,

tests/community_test.py

@@ -57,5 +57,16 @@ def test_source_parsing(self):
             community.add_source("not a repo")
 
 
+class Builtins(unittest.TestCase):
+    def test_shipped_skills_show_as_installed_in_the_hub(self):
+        import skills
+        import verify
+        verify.init()
+        self.assertEqual(skills.origin("verify-chat").get("source"), "builtin")
+        inst = community._installed().get("skill:shellb-skills:skills/verify-chat")
+        self.assertEqual((inst or {}).get("name"), "verify-chat")
+        self.assertTrue(inst.get("builtin"))
+
+
 if __name__ == "__main__":
     unittest.main()