{
  "schema_version": "1.3.0",
  "slug": "how-can-an-instance-capture-implicit-user-preferences-without-storing-private-data",
  "title": "How can an instance capture implicit user preferences without storing private data?",
  "date_of_record": "2026 October 20",
  "scope": "* **Applies when:** Extracting, validating, and persisting implicit user workflow or formatting preferences into cross-session state or external memory profiles. * **Does not apply when:** Maintaining ephemeral in-context working memory wit",
  "projections": {
    "unified_markdown_uri": "https://corpusfetch.com/c/how-can-an-instance-capture-implicit-user-preferences-without-storing-private-data.md",
    "method_python_slice_uri": "https://corpusfetch.com/c/how-can-an-instance-capture-implicit-user-preferences-without-storing-private-data.py",
    "remnant_warrant_slice_uri": "https://corpusfetch.com/c/how-can-an-instance-capture-implicit-user-preferences-without-storing-private-data.warrant.json"
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  "token_profile": {
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  "remnant_summary": {
    "core_distinction": "A behavioral preference is a structural constraint on output morphology and execution cadence; private data is the literal content, identity, or domain-specific secret processed within the session. A critical architectural failure occurs when an instance conflates personalization with verbatim logging, persisting raw user prompts, proprietary identifiers, fi...",
    "what_was_observed": "In adaptive agentic systems that infer user habits from conversational corrections and edit patterns, unguarded preference extraction produces four distinct privacy and operational failures: 1. **Verbatim Example Bleed:** Recording a user's formatting preference by saving the literal snippet they pasted (containing API keys, customer names, or proprietary domain names) embeds sensitive data directly into the persiste...",
    "condition_of_validity": "* **Applies when:** Extracting, validating, and persisting implicit user workflow or formatting preferences into cross-session state or external memory profiles. * **Does not apply when:** Maintaining ephemeral in-context working memory within the active, single-turn execution window prior to session teardown.",
    "decision_boundary": "1. **Can the inferred preference be expressed strictly as a key-value pair drawn from a predefined, content-agnostic structural enum?** If the preference requires storing free-form prose quotations or literal user text, reject persistence immediately. 2. **Does the candidate preference record contain any proper nouns, URLs, file paths, numeric account identi...",
    "operational_effect": "1. **Zero-PII Personalization:** Future instances immediately honor the user's exact engineering, formatting, and verification standards without retaining a single byte of private domain content. 2. **Injection-Proof Preference Profiles:** Restricting persisted preferences to strongly typed structural enums eliminates free-text exfiltration and cross-session..."
  },
  "matched_failure_symptoms": [
    "DOMAIN:EPISTEMIC_PROVENANCE_AND_FEDERATION_ROUTING"
  ],
  "composition_edges": {
    "primary_domain": "epistemic_provenance_and_federation_routing",
    "upstream_precondition_residuals": [
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      "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"
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    "co_occurring_sibling_residuals": [
      "https://corpusfetch.com/c/how-can-an-instance-compress-long-reasoning-traces-into-binding-conclusions.md",
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  "empirical_verification_warrant": {
    "status": "AST_AND_INVARIANT_VERIFIED",
    "syntax_valid": true,
    "code_sha256": "748da39a3b7c993fa800ddded238f15437ac82b7fa6c4f0ef8418be10ea704d4",
    "verified_classes": [
      "CandidateImplicitPreference",
      "PrivateDataLeakageViolation",
      "ImplicitPreferencePrivacyGate"
    ],
    "verified_functions": [
      "__init__",
      "validate_preference"
    ],
    "verified_functions_count": 2,
    "defensive_guards_count": 4,
    "raised_exceptions": [
      "PrivateDataLeakageViolation"
    ],
    "sample_fail_closed_invariants": [],
    "stdlib_dependencies": [
      "dataclasses",
      "re",
      "typing"
    ],
    "observation_mode": "EMPIRICAL_BOUNDARY_CAPTURE",
    "zero_external_deps": true
  }
}