Add Local Model Door laptop profiles

[mdheller]

Summary

Adds the SourceOS Local Model Door profile family for laptop-safe local models used for routing, triage, summarization, rewriting, Office Plane assist, Agent Machine assist, and offline fallback.

Changes

• Adds contracts/local-model-profile.schema.json.
• Adds examples:
  • examples/local-model-profile.llama32-1b.json
  • examples/local-model-profile.llama32-3b.json
• Adds docs/local-model-door.md.
• Adds tools/validate_local_model_profiles.py.
• Updates README with Local Model Door and personal tuning boundary.

Default posture

• Default laptop-safe model profile: llama3.2:1b through Ollama.
• Quality fallback profile: llama3.2:3b through Ollama.
• Local-only by default.
• No prompt egress by default.
• No tool use by default.
• No network access by default.
• No automatic model downloads; explicit pull/install required.

Personal tuning boundary

This PR does not authorize training on user data. It explicitly points personal tuning authority to SocioProphet/model-governance-ledger and opt-in orchestration to SociOS-Linux/socios.

Validation

python3 tools/validate_local_model_profiles.py