spec(SHARD-WP-0013 T5): WikiEngineCoreArchitecture.md — small core + typed extensions

Headless, API-first, agent-optimized native engine = canonical-mode shard backend.
Thesis: a page-store kernel with a typed-extension runtime; everything beyond the
c2-minimum is a typed extension activated per shard, and the shard's §A capability
profile is DERIVED from its active extensions (configuration->capability->conformance).
9 engine invariants (engine-is-one-shard, small kernel, per-shard activation,
profile-from-extensions, headless/agent-first, reuse-not-reinvent, typed+verified).
Kernel (4 concepts), typed-extension model (typed hooks + deterministic composition +
feature-control activation), T2 featureset/conflict-mediation realized, engine-as-shard,
agent-first API surface, module sketch, reuse (consumes feature-control/authorization;
G1 framework proposal), traceability, decisions/open, stability note. Marks T5 done.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
2026-06-15 22:54:40 +02:00
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@@ -140,7 +140,7 @@ auth-in-core amendment.
```task
id: SHARD-WP-0013-T5
status: todo
status: done
priority: high
state_hub_task_id: "4712bbfe-4ff3-4631-a9fb-e8857e1c0a2c"
```