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refactor: rename last_import_hash to jsonl_content_hash (bd-39o)

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The metadata key 'last_import_hash' was misleading because it's updated on
both import AND export. Renamed to 'jsonl_content_hash' which more accurately
describes its purpose - tracking the content hash of the JSONL file.

Added migration support: read operations try new key first, then fall back
to old key for backwards compatibility with existing databases.

Files modified:
- cmd/bd/integrity.go: Update key name with migration support
- cmd/bd/import.go: Update key name
- cmd/bd/sync.go: Update key name
- cmd/bd/autoflush.go: Update key name with migration support
- cmd/bd/daemon_sync.go: Update key name
- cmd/bd/daemon_event_loop.go: Update key name with migration support
- internal/autoimport/autoimport.go: Update key name with migration support
- Updated all related tests

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Steve Yegge
2025-11-28 23:14:06 -08:00
parent bca8022bee
commit f59f8c20d0
9 changed files with 90 additions and 64 deletions
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12
cmd/bd/daemon_sync.go
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@@ -247,16 +247,17 @@ func sanitizeMetadataKey(key string) string {
return strings.ReplaceAll(key, ":", "_")
}
// updateExportMetadata updates last_import_hash and related metadata after a successful export.
// updateExportMetadata updates jsonl_content_hash and related metadata after a successful export.
// This prevents "JSONL content has changed since last import" errors on subsequent exports (bd-ymj fix).
// In multi-repo mode, keySuffix should be the stable repo identifier (e.g., ".", "../frontend").
//
// Metadata key format (bd-ar2.12):
// - Single-repo mode: "last_import_hash", "last_import_time"
// - Multi-repo mode: "last_import_hash:<repo_key>", "last_import_time:<repo_key>", etc.
// Metadata key format (bd-ar2.12, bd-39o):
// - Single-repo mode: "jsonl_content_hash", "last_import_time"
// - Multi-repo mode: "jsonl_content_hash:<repo_key>", "last_import_time:<repo_key>", etc.
// where <repo_key> is a stable repo identifier like "." or "../frontend"
// - Windows paths: Colons in absolute paths (e.g., C:\...) are replaced with underscores (bd-web8)
// - Note: "last_import_mtime" was removed in bd-v0y fix (git doesn't preserve mtime)
// - Note: "last_import_hash" renamed to "jsonl_content_hash" (bd-39o) - more accurate name
//
// Transaction boundaries (bd-ar2.6):
// This function does NOT provide atomicity between JSONL write, metadata updates, and DB mtime.
@@ -279,7 +280,8 @@ func updateExportMetadata(ctx context.Context, store storage.Storage, jsonlPath
}
// Build metadata keys with optional suffix for per-repo tracking
hashKey := "last_import_hash"
// Renamed from last_import_hash to jsonl_content_hash (bd-39o)
hashKey := "jsonl_content_hash"
timeKey := "last_import_time"
if keySuffix != "" {
hashKey += ":" + keySuffix