source-lifecycle-is-fail-safe-and-gapless
IN derived (depth 5)
The end-to-end fail-safe source integrity pipeline — from convention-based path resolution through collision-resistant SHA-256 hashing to comprehensive drift detection — feeds directly into gapless lifecycle management, ensuring every source material change on disk is detected, surfaced, and managed through the full belief lifecycle without gaps.
Summary
When source files change on disk, the system reliably detects those changes and carries them all the way through to updating the beliefs that depend on them, without crashing or silently skipping anything. This works because the file-handling layer gracefully handles missing or changed files instead of throwing errors, and the lifecycle layer ensures no change slips through untracked.
Justifications
SL — The source pipeline provides detection (what changed) and lifecycle management provides response (how the system adapts), creating complete coverage from disk to belief state
Antecedents (all must be IN):
- source-pipeline-is-end-to-end-fail-safe — The complete source integrity pipeline from path resolution through hash computation to staleness detection is end-to-end fail-safe: convention-based resolution returns None on missing files rather than raising exceptions, collision-resistant SHA-256 hashing backfills additively without overwriting, and staleness detection catches all drift with CI-ready exit codes — no stage in the pipeline raises exceptions on adverse conditions, and each stage's output gracefully feeds the next.
- lifecycle-management-is-gapless — The system manages belief lifecycle without gaps across all operation types: staleness checking detects all forms of source drift, propagation respects node lifecycle states, and both read and write paths enforce consistent lifecycle semantics — no operation ignores or corrupts lifecycle state.
Dependents
These beliefs depend on this one:
- exception-safety-spans-tms-and-source-lifecycle — The system handles failures safely across both domains: the TMS core resolves exceptional conditions (contradictions via backtracking, challenges via deterministic propagation) while the source integrity pipeline handles its failure modes (missing files, changed content, deleted sources) — no exception in either domain can produce inconsistent or undefined state.
- lifecycle-governance-is-metadata-enabled-and-source-grounded — Rich lifecycle governance — extending beyond binary IN/OUT truth through extensible metadata carrying retraction flags, stale reasons, access tags, and challenges — is concretely grounded in fail-safe source integrity: the source pipeline (convention-based resolution, collision-resistant SHA-256 hashing, comprehensive staleness detection) populates and verifies the metadata state that enables lifecycle governance, closing the loop between abstract lifecycle management and concrete source verification.
- source-integrity-grounds-lifecycle-self-correction — The system's lifecycle-spanning self-correction is concretely grounded in fail-safe source integrity: the end-to-end source pipeline (convention-based path resolution, collision-resistant SHA-256 hashing, comprehensive staleness detection, CI gating) provides the verification mechanism that makes maintenance-time self-correction practically achievable alongside creation-time exhaustive derivation.
- source-integrity-is-deterministic-and-architecturally-grounded — The fail-safe source integrity pipeline — from convention-based path resolution through collision-resistant SHA-256 hashing to comprehensive staleness detection — operates within the same deterministic, architecturally-grounded lifecycle framework as all other system operations, ensuring source verification is both predictable and structurally safe.