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3	3	This page describes the current data model for FactHarbor.
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5		-== Core Data Model Refinements ==
6		-
7		-The system relies on the following versioned core entities:
8		-
9		-* **CLAIM_CLUSTER**
10		-** ``ClusterID`` (PK), ``EmbeddingVectorRef``, ``Theme``
11		-** Groups related claims into topical clusters.
12		-
13		-* **CLAIM / CLAIM_VERSION**
14		-** ``CLAIM`` is the long‑lived anchor for a real‑world claim.
15		-** ``CLAIM_VERSION`` is an immutable snapshot of wording + basic metadata.
16		-** Verdicts are **NOT** attached to ClaimVersion but to Scenario.
17		-
18		-* **SCENARIO / SCENARIO_VERSION**
19		-** ``SCENARIO`` represents a stable interpretive context for a claim.
20		-** ``SCENARIO_VERSION`` is an immutable snapshot of that context (definitions, assumptions, boundaries).
21		-** Verdicts are attached to SCENARIO, with verdict history in VERDICT_VERSION.
22		-
23		-* **EVIDENCE / EVIDENCE_VERSION**
24		-** ``EVIDENCE`` is the logical source (report, article, dataset…).
25		-** ``EVIDENCE_VERSION`` is the extracted/processed snapshot (summary, reliability, etc.).
26		-
27		-* **VERDICT / VERDICT_VERSION**
28		-** ``VERDICT`` represents “this scenario is evaluated for this claim.”
29		-** ``VERDICT_VERSION`` is an immutable snapshot of a concrete evaluation (likelihood, confidence, reasoning, timestamp).
30		-
31		-* **SCENARIO_EVIDENCE_VERSION_LINK**
32		-** Connects ``ScenarioVersion`` ↔ ``EvidenceVersion`` (many‑to‑many).
33		-** Fields: Relevance, Direction (SUPPORTS / CONTRADICTS / NEUTRAL).
34		-** **Rule:** The link always targets VERSIONED entities, never the base tables.
35		-
36	36	== Core Data Model ERD ==
	6	+The authoritative ERD is provided via the dedicated diagram page:
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38	38	{{include reference="FactHarbor.Specification.Diagrams.Core Data Model ERD.WebHome"/}}