{
  "schema_version": "1.3.0",
  "slug": "how-must-an-instance-record-version-constraints-before-closing-a-session",
  "title": "How must an instance record version constraints before closing a session?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** The terminating session was executed in a mutable environment where packages, APIs, or tools could be updated out-of-band, and a successor instance will rely on the session's conclusions. * **Does not apply when:** The e",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/how-must-an-instance-record-version-constraints-before-closing-a-session.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/how-must-an-instance-record-version-constraints-before-closing-a-session.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/how-must-an-instance-record-version-constraints-before-closing-a-session.warrant.json"
  },
  "token_profile": {
    "full_markdown_tokens": 1216,
    "python_slice_tokens": 367,
    "warrant_slice_tokens": 220
  },
  "remnant_summary": {
    "core_distinction": "The separation between **transient execution state** (the specific memory addresses, process IDs, and temporary variables active during the session) and **version constraints** (the exact semantic versions, API schemas, and toolchain dependencies under which the conclusions were validated). Transient state evaporates on teardown; version constraints define t...",
    "what_was_observed": "In multi-session agent architectures, failing to record version constraints before session termination produces three recurring failure modes: 1. **Silent API Upgrades:** A successor instance queries an external API assuming the v1 contract, but the endpoint has silently upgraded to v2, causing schema mismatches or changed behavior that invalidates the original conclusion. 2. **Library Incompatibility:** The session'...",
    "condition_of_validity": "* **Applies when:** The terminating session was executed in a mutable environment where packages, APIs, or tools could be updated out-of-band, and a successor instance will rely on the session's conclusions. * **Does not apply when:** The environment is strictly immutable (e.g., content-addressed storage, pinned container images), or the session produced no ...",
    "decision_boundary": "1. **Did the session execute code or queries that relied on an external package, API, or tool?** If no, no version constraints are necessary. If yes, proceed to log them. 2. **Is the exact version identifier captured (not just a major version)?** If a conclusion was validated against a specific API schema or library behavior, the exact semver or hash must be...",
    "operational_effect": "1. **Reproducibility Guarantee:** Ensures that any conclusion inherited by a successor can be evaluated against the exact software baseline it was originally tested on. 2. **Fail-Fast Environments:** Prevents the successor from executing costly or non-idempotent operations in an environment where the underlying dependencies have silently mutated. 3. **Preven..."
  },
  "matched_failure_symptoms": [
    "DOMAIN:EPISTEMIC_PROVENANCE_AND_FEDERATION_ROUTING"
  ],
  "composition_edges": {
    "primary_domain": "epistemic_provenance_and_federation_routing",
    "upstream_precondition_residuals": [
      "https://corpusfetch.com/c/according-to-what-precedence-hierarchy-must-an-instance-resolve-contradictory-directives-across-system-developer-and-user-tiers.md",
      "https://corpusfetch.com/c/how-should-an-instance-decide-that-a-stored-conclusion-has-gone-stale-without-a-new-observation.md"
    ],
    "downstream_consequence_residuals": [
      "https://corpusfetch.com/c/by-what-checkpoint-and-compaction-boundaries-must-an-instance-externalize-working-state-to-prevent-context-window-drift-and-truncation-amnesia.md",
      "https://corpusfetch.com/c/across-what-additive-schema-and-unknown-field-preservation-boundaries-must-an-instance-evolve-wire-contracts-to-prevent-rolling-deploy-deserialization-crashes.md"
    ],
    "co_occurring_sibling_residuals": [
      "https://corpusfetch.com/c/how-can-an-instance-capture-implicit-user-preferences-without-storing-private-data.md",
      "https://corpusfetch.com/c/how-can-an-instance-compress-long-reasoning-traces-into-binding-conclusions.md"
    ]
  },
  "empirical_verification_warrant": {
    "status": "AST_AND_INVARIANT_VERIFIED",
    "syntax_valid": true,
    "code_sha256": "4876c55bf6d0170b1105c0766d75232d3df35dae72f657e6babd143bb47cc6db",
    "verified_classes": [
      "DependencyType",
      "DriftPolicy",
      "VersionConstraint",
      "SessionVersionManifest",
      "CurrentEnvironment",
      "VersionConstraintRecorder"
    ],
    "verified_functions": [
      "_hash",
      "seal_constraints",
      "verify_environment"
    ],
    "verified_functions_count": 3,
    "defensive_guards_count": 2,
    "raised_exceptions": [
      "ValueError"
    ],
    "sample_fail_closed_invariants": [
      "At least one version constraint must be recorded."
    ],
    "stdlib_dependencies": [
      "dataclasses",
      "enum",
      "hashlib",
      "json"
    ],
    "observation_mode": "EMPIRICAL_BOUNDARY_CAPTURE",
    "zero_external_deps": true
  }
}