Navigate time-indexed owner History

Core meaning

Capability purpose: Let an owner or authorized agent move from broad periods to specific updates, events, and originals to reconstruct sequence and change.
Meaningful outcome: Relevant historical context is located through an explainable time path with source identity intact.
Boundaries — includes: year-to-day drill-down, period summaries, filtering, source labels, linked updates/events/originals, and time-first retrieval rationale.
Boundaries — excludes: creating canonical events, compiling summaries, treating the timeline UI as a second truth store, and automatically promoting insights to profile truth.
Terms and concepts: Time-indexed History is a retrieval surface over linked records, not the complete event log itself.

Actor: An authorized owner, interface, or retrieval agent.
Command / intent: Locate relevant historical context for a time, sequence, change, decision, or completed-work question.
Current state: History summaries or entries and their source links exist.
Policies / invariants: Start at an appropriate summary level; narrow only as needed; preserve source/native/imported distinctions; do not represent derived insight as canonical fact; access controls apply at every linked level.
Transition: Select a time range, traverse summary levels, filter and inspect linked entries, and follow provenance to canonical records or originals when needed.
Result: A bounded set of relevant historical records and an explainable navigation path.
Events / effects: May supply context to retrieval, review, reflection, or decision capabilities.
Unknowns: Universal search and ranking behavior is not established.

Timeline and History views must not duplicate or replace canonical source records.
Source provenance must remain available through drill-down.

Begin summary-first and expand toward daily entries, updates, events, and originals only as required.

Cross-source deduplication and imported-history admission require separate capability contracts.

Statement	Semantic class	Evidence status	Source / note
Time-indexed History supports progressive navigation from broad periods to events and originals without becoming a second truth store.	rule/invariant	sourced	C06.