{
  "record_type": "teleon_cas_object_envelope/v1",
  "swhid": "swh:1:cnt:490f361648ed61f4d0096c8bc044ff724b034710",
  "sha256_hex": "035c9a9d22fbcaf0a37ee23f49de8123b0bdf7de07fc70b6cca55477fb164291",
  "r2_object_key": "sha256/03/035c9a9d22fbcaf0a37ee23f49de8123b0bdf7de07fc70b6cca55477fb164291",
  "storage_backend": "cloudflare_r2_plus_d1_index",
  "teleon_uri": "teleon://swh:1:cnt:490f361648ed61f4d0096c8bc044ff724b034710",
  "vault_url": "https://files.teleon.dev/objects/swh:1:cnt:490f361648ed61f4d0096c8bc044ff724b034710",
  "raw_stream_url": "https://files.teleon.dev/raw/sha256/035c9a9d22fbcaf0a37ee23f49de8123b0bdf7de07fc70b6cca55477fb164291",
  "slug": "teleon-18db-unified-backend-dossier",
  "title": "Teleon 18-Database Dual-Track Shared Backend & Stateless Surface Architecture",
  "artifact_kind": "context_pack",
  "filename": "UNIFIED-BACKEND-ARCHITECTURE.md",
  "content_type": "text/markdown; charset=utf-8",
  "byte_length": 939,
  "spdx_license": "Apache-2.0",
  "facets": {
    "context.token_budget@v1": {
      "estimated_tokens": 310,
      "scope": "system_architecture"
    },
    "search.l0_card@v1": {
      "keywords": [
        "architecture",
        "teleon",
        "d1",
        "r2",
        "dual-track",
        "sister",
        "thp",
        "surfaces"
      ]
    }
  },
  "provenance": {
    "submitter": "teleon-architecture",
    "verified_maintainer": "teleon-architecture",
    "repo_owner": "teleon-dev",
    "evidence_status": "verified_first_party"
  },
  "verification": {
    "tier": "deterministic_verified",
    "pass_at_k": 1,
    "pass_hat_k": 1,
    "k": 3,
    "spec_hash": "spec_ctx_unified_18db_v1",
    "unreadable_inputs": []
  },
  "inline_text": "# Teleon 18-Database Shared Backend & Stateless Surface Contract\n\n1. **18 Database Units (`DB-UNIT-01 .. DB-UNIT-18`)**: Acquire (`11`), Interrogate & Scenarios (`12`), Solve & Compose (`13`, `04`), Describe & Index (`02`, `14`), Serve & Telemetry (`03`, `06`, `07`), and Governance/Settlement (`01`, `05`, `08`, `09`, `10`, `15..18`).\n2. **Dual-Track Execution**: Track 1 (`q01..q21`) processes operational work via 0-call deterministic operators or AI agents; Track 2 Sister (`sq01..sq18`) proposes and holdout-verifies self-tuning upgrades.\n3. **Substrate Exemption (`EXEMPT_DATABASE_SUBSTRATES`)**: Cellular `*-db.teleon.dev` pools enforce `max_inline_steps = 0` so agent wrappers never block ACID transactions.\n4. **Stateless Surfaces (`X-Teleon-Surface-Id` + THP v1.0)**: Independent web and agent surfaces share D1 (`teleon-core-fabric`) and R2 (`teleon-universal-cas`) while isolating surface-specific tables (`surface_<slug>_*`).\n",
  "created_at": "2026-10-25T01:41:08.862Z"
}