---
id: capability.wiki.derived-views
name: Wiki Derived Views
summary: Recomputable views over a wiki union — BackLinks, RecentChanges, AllPages, SiteMap, and (delegate-or-derive) Search — carrying provenance.
owner: shard-wiki
status: draft
domain: helix_forge
tags: [wiki, derived-views, backlinks, recentchanges, search, shard-wiki]

maturity:
  discovery:
    current: D3
    target: D5
    confidence: medium
    rationale: >
      Core-vs-adapter classification and behaviours are decided (FederationRequirements ADR-03);
      implementation is planned (SHARD-WP-0010), not built.
  availability:
    current: A0
    target: A4
    confidence: low
    rationale: >
      Designed; no implementation yet. Informational/planning reuse only today.

external_evidence:
  completeness:
    level: C0
    name: Absent
    confidence: low
    basis: scope_vs_intent_and_consumer_expectations
    satisfied_expectations: []
    broken_expectations:
      - no derived view is implemented yet
    out_of_scope_expectations:
      - presentation / rendering of views
  reliability:
    level: R0
    confidence: low
    basis: consumer_quality_signals
    known_reliability_risks:
      - planning-stage

discovery:
  intent: >
    Provide recomputable, provenance-carrying views over the union (link graph, change feed,
    enumeration, search) without introducing canonical state.
  includes:
    - BackLinks (link graph), RecentChanges (journal + shard signals), AllPages, SiteMap
    - Search as delegate-to-native-or-derive-index
  excludes:
    - view presentation / UI
  use_cases:
    - "shard-wiki UseCaseCatalog UC-17..UC-21, UC-63"

availability:
  current_level: A0
  target_level: A4
  current_artifacts:
    - "shard-wiki/workplans/SHARD-WP-0010-derived-views.md"
  consumption_modes:
    - informational

relations:
  depends_on:
    - capability.wiki.shard-orchestration
    - capability.wiki.page-model
  related_to:
    - capability.wiki.engine-typed-extensions

evidence:
  documentation:
    - "shard-wiki/spec/FederationRequirements.md (ADR-03)"

consumer_guidance:
  recommended_for:
    - planning derived navigation/discovery over a federated wiki union
  not_recommended_for:
    - implementation reuse today (planning-stage)
  known_limitations:
    - not implemented; Search ranking policy undecided
---

# Wiki Derived Views

Recomputable views over the union (BackLinks, RecentChanges, AllPages, SiteMap, Search). All
are derived/disposable (no canonical state) and carry provenance; Search is delegate-to-native
where a shard's query capability allows, else a derived index. Planned in SHARD-WP-0010.