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feat(coordination): git backend wiring + verbatim log migration (WP-0009 T4)

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InformationSpace.git_backed(space_id, repo_path) wires the git coordination log;
the default constructor stays in-memory for tests (new keyword-only store=). A
one-time importer (migrate_space / import_log / JSONL export+import) replays an
existing in-memory or JSON log into git verbatim — preserving seq, timestamp and
actor (union-without-erasure) and refusing out-of-order import. Same fold after
migration; no behavioural change to overlay/union. SCOPE updated; WP-0009 done.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
tegwick 2026-06-16 01:49:55 +02:00
parent f0fee65cc0
commit c731c96634
7 changed files with 186 additions and 8 deletions
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10
workplans/SHARD-WP-0009-git-decision-log.md
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@ -4,7 +4,7 @@ type: workplan
title: "git-backed DecisionLog + per-space append authority"
domain: whynot
repo: shard-wiki
status: active
status: done
owner: tegwick
topic_slug: whynot
created: "2026-06-15"
@ -39,7 +39,7 @@ sharding (blueprint O-12). Single append authority per space is the target.
```task
id: SHARD-WP-0009-T1
status: todo
status: done
priority: high
state_hub_task_id: "a8fcbb3e-fbc4-4f68-9cf0-d8a6ee057191"
```
@ -54,7 +54,7 @@ ordering preserved; deterministic serialization.
```task
id: SHARD-WP-0009-T2
status: todo
status: done
priority: high
state_hub_task_id: "62abd162-4243-4659-8d27-9fc967ab11a0"
```
@ -69,7 +69,7 @@ hand-off resumes from head; a partitioned non-holder cannot fork the log.
```task
id: SHARD-WP-0009-T3
status: todo
status: done
priority: high
state_hub_task_id: "8cc3691e-05a7-443f-9292-a3fdf3fd59a4"
```
@ -82,7 +82,7 @@ process B (new handle) sees it; fold equals the in-memory fold for the same even
```task
id: SHARD-WP-0009-T4
status: todo
status: done
priority: medium
state_hub_task_id: "281e1db4-6a75-456b-a2bc-b761feb10609"
```