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spec(SHARD-WP-0006 T2): event-sourced coordination + per-space append authority

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Resolves B-1+B-3. Coordination-canonical state = an append-only decision log
in the git journal (events: overlay/binding/alias/merge); queryable current
state = a derived fold (tier-3, indexed). Concurrency: one append authority
per space (lease/leader) → totally-ordered per-space log, read-your-writes
across instances, HA via re-grantable lease, partition yields to log integrity.
Updates §1, §4, §8.1, §8.6, §11. I-6 strengthened (coordination state is now
git-addressable history/patch/review), not bypassed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Bernd Worsch
2026-06-15 02:00:43 +02:00
parent cbd29e0a32
commit 08a2148079
2 changed files with 53 additions and 9 deletions
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workplans/SHARD-WP-0006-architecture-hardening-2.md
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@@ -43,7 +43,7 @@ where mutable coordination state actually lives*.
```task
id: SHARD-WP-0006-T1
status: todo
status: done
priority: high
state_hub_task_id: "b0b4087b-ec19-4ae7-94b1-9a813a6133b9"
```