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>
WP-0009 git-backed DecisionLog + per-space append authority (keystone backing);
WP-0010 derived views (wikilinks, BackLinks, RecentChanges, AllPages/SiteMap);
WP-0011 incremental union + equivalence index + I-2 verification;
WP-0012 second adapter (git-IS-store) validating the contract on a new substrate.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
