docs: cross-link vault-onboarding companion skill; add pkm keywords

README.md

@@ -547,6 +547,16 @@ npx skills add aliasunder/agent-skills --skill obsidian-vault
 
 [Skill source →](https://github.com/aliasunder/agent-skills/tree/main/skills/obsidian-vault)
 
+## Companion: vault-onboarding skill
+
+Starting from scratch? The **vault-onboarding** skill bootstraps the collaboration system this server powers — memory files, session protocols, task boards, and per-client instruction files — through a conversational interview. It works standalone with native file tools; connected to vault-cortex, the generated setup unlocks remote access, hybrid search, and semantic memory recall.
+
+```bash
+npx skills add aliasunder/vault-onboarding
+```
+
+[Skill source →](https://github.com/aliasunder/vault-onboarding)
+
 ---
 
 ## Roadmap

cli/package.json

@@ -35,6 +35,7 @@
     "ai-memory-system",
     "knowledge-base",
     "note-taking",
+    "second-brain",
     "pkm",
     "personal-knowledge-management",
     "hybrid-search",

scripts/generate-dockerhub-readme.ts

@@ -52,6 +52,7 @@ const EXCLUDED_H2 = new Set([
   "Authentication",
   "Development",
   "Companion: obsidian-vault skill",
+  "Companion: vault-onboarding skill",
   "Contributing",
   "Security",
   "Roadmap",