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tegwick
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Adds capability.wiki.{shard-orchestration, adapter-contract, page-model,
coordination-journal, overlay, federation-models, engine-typed-extensions}
with honest D/A/C/R maturity vectors, relations, and shard-wiki spec/test
evidence; updates registry/indexes/capabilities.yaml. reuse-surface validate: ok.
Source: shard-wiki SHARD-WP-0013 T1.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
98 lines
3.1 KiB
Markdown
98 lines
3.1 KiB
Markdown
---
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id: capability.wiki.federation-models
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name: Selectable Federation-Model Taxonomy
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summary: Federation as a plural, composable coordination axis (fork+journal, VCS-replication+ping, query-time graph-join, feed, activity-streams, engine-mirror) selected per space.
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owner: shard-wiki
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status: draft
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domain: helix_forge
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tags: [wiki, federation, taxonomy, composable, shard-wiki]
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maturity:
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discovery:
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current: D4
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target: D6
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confidence: high
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rationale: >
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A six-model taxonomy distilled from a ~23-system synthesis, each model anchored in a
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real system, with capability prerequisites and per-space/per-shard composition rules.
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availability:
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current: A0
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target: A4
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confidence: low
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rationale: >
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Designed and specified (FederationArchitecture T17) but not implemented; informational
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reuse only today.
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external_evidence:
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completeness:
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level: C1
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name: Sparse
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confidence: low
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basis: scope_vs_intent_and_consumer_expectations
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satisfied_expectations:
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- the model taxonomy and selection/composition rules are documented
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broken_expectations:
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- no federation transport is implemented yet
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out_of_scope_expectations:
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- mandating a single federation mechanism
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reliability:
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level: R0
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confidence: low
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basis: consumer_quality_signals
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known_reliability_risks:
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- design-stage; no runtime evidence
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discovery:
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intent: >
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Treat federation as selectable and composable rather than one mechanism, so each space
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picks fork+journal, VCS-replication, query-join, feed, activity-streams, or engine-mirror.
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includes:
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- the six federation models + their capability floors
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- per-space selection and per-shard composition
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excludes:
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- imposing one homogeneous federation network
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use_cases:
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- "shard-wiki UseCaseCatalog UC-26, UC-31, UC-33, UC-71, UC-72, UC-74, UC-79"
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availability:
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current_level: A0
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target_level: A4
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current_artifacts:
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- "shard-wiki/spec/FederationArchitecture.md (T17)"
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consumption_modes:
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- informational
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relations:
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depends_on:
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- capability.wiki.shard-orchestration
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- capability.wiki.coordination-journal
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evidence:
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documentation:
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- "shard-wiki/spec/FederationArchitecture.md"
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- "shard-wiki/research/260614-shard-spectrum-synthesis/findings.md"
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consumer_guidance:
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recommended_for:
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- planning a federation strategy that mixes models per source
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not_recommended_for:
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- implementation reuse today (design-stage)
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known_limitations:
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- no transport implemented; informational planning reuse only
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---
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# Selectable Federation-Model Taxonomy
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Federation is plural and composable: fork+journal (Federated Wiki), VCS-replication+ping
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(ikiwiki), query-time graph-join (Wikibase SERVICE), feed aggregation, activity streams
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(ActivityPub), and engine-mirror (Wiki.js). A space selects a model and composes per shard;
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the default is fork+journal over git. Design-stage capability — strong for planning reuse.
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## Assessment notes
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### Discovery
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FederationArchitecture T17, distilled from the shard-spectrum synthesis (v3).
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### Availability
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Specified, not implemented — informational reuse only.
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