Three blockers fixed from review of fix/ootb-mother-mcp:
1. Real Tailscale IP removed from image/repo.
- external-mcp.json uses "mother" host alias (resolved by SSH config).
- Key path: /var/db/colibri/.ssh/mother-mcp (daemon user home).
- The real IP lives only on the offline seed (ssh/config), never in
the repo or the shipped image.
2. Cross-user key access fixed.
- The daemon runs as colibri (home /var/db/colibri), not clawdie.
- Seed importer now installs SSH material to both clawdie AND
colibri homes (same seed material, same key, separate ~/.ssh).
- build.sh dev convenience also copies to both homes.
- clawdie-live-seed.README.txt already documents the seed layout.
3. Doc fully de-obfuscated.
- All m0th3r/c0l1br1/n0d3_r3g1st3r → mother/colibri/node_register.
- All real IPs → <mother-tailscale-ip> placeholder.
- Removed Step 2 (manual external MCP) + Step 3 (register) — both
are now baked into the ISO.
- Removed trailing "colibri-mcp" remote command from examples
(hardened wrapper rejects non-allowlisted commands).