{
  "schema_version": "1.3.0",
  "slug": "what-shared-memory-reconciliation-invariants-must-survive-a-leaderless-agent-election",
  "title": "What shared-memory reconciliation invariants must survive a leaderless agent election?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** The system can experience leader failure, concurrent writes can occur during the election window, and the new leader must inherit a consistent state. * **Does not apply when:** The system has a stable leader, or shared m",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/what-shared-memory-reconciliation-invariants-must-survive-a-leaderless-agent-election.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/what-shared-memory-reconciliation-invariants-must-survive-a-leaderless-agent-election.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/what-shared-memory-reconciliation-invariants-must-survive-a-leaderless-agent-election.warrant.json"
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  "token_profile": {
    "full_markdown_tokens": 959,
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  "remnant_summary": {
    "core_distinction": "The separation between **leaderless election** (agents vote for a new leader) and **state reconciliation** (the new leader inherits a consistent view of shared memory despite concurrent writes during the election). Relying on the election alone creates the **Split-Brain Merge Hazard**: two agents claim leadership and each writes conflicting shared state. Whe...",
    "what_was_observed": "In distributed agent coordination, failing to reconcile during leaderless elections produces three primary failure modes: 1. **Conflicting Writes:** Agent A and B both believe they are the new leader and write conflicting resource allocations to shared memory. 2. **Lost Writes:** A write made during the election is overwritten by the winning leader's later write, erasing the \"transient\" state. 3. **Orphaned Transacti...",
    "condition_of_validity": "* **Applies when:** The system can experience leader failure, concurrent writes can occur during the election window, and the new leader must inherit a consistent state. * **Does not apply when:** The system has a stable leader, or shared memory is strictly append-only with no conflicting writes possible.",
    "decision_boundary": "1. **Did an election occur?** If no, standard state management applies. If yes, proceed. 2. **Is the `pre_election_state_hash` recorded?** If no, the new leader has no baseline. It must reconstruct from the `concurrent_write_ledger`. 3. **Are there concurrent writes in the `concurrent_write_ledger`?** If yes, the new leader must apply the `deterministic_merg...",
    "operational_effect": "1. **Split-Brain Prevention:** Ensures the new leader inherits a consistent state, not a divergent one. 2. **Lost Write Recovery:** Preserves all concurrent writes during the election, allowing the new leader to merge rather than drop them. 3. **Deterministic Recovery:** Provides a cryptographic proof of how the state was reconciled, satisfying audit require..."
  },
  "matched_failure_symptoms": [
    "OOM_KILL_OR_MEMORY_EXHAUSTION"
  ],
  "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": "b96f867d69b3901206e3197d43bd0a3b5350d360736bf14c1187e0d6f813136d",
    "verified_classes": [
      "ReconciliationVerdict",
      "ElectionEpoch",
      "ReconciliationPolicy",
      "ReconciliationManifest",
      "LeaderlessElectionGuard"
    ],
    "verified_functions": [
      "_hash",
      "evaluate_reconciliation"
    ],
    "verified_functions_count": 2,
    "defensive_guards_count": 0,
    "raised_exceptions": [],
    "sample_fail_closed_invariants": [],
    "stdlib_dependencies": [
      "dataclasses",
      "enum",
      "hashlib",
      "json"
    ],
    "observation_mode": "EMPIRICAL_BOUNDARY_CAPTURE",
    "zero_external_deps": true
  }
}