review(p9-fb-23-task1): fix missed IngestReport construction sites + snapshot

reviewer-flagged: aa2a6ea claimed build clean but missed:
- crates/kebab-store-sqlite/tests/ingest_report_snapshot.rs (test fixture)
- crates/kebab-cli/src/wire.rs (test fixture)
- crates/kebab-store-sqlite/snapshots/ingest_report.snapshot.json (snapshot)

All three add `unchanged: 0` (or `\"unchanged\": 0`) to match the new
IngestReport.unchanged field. cargo clippy --workspace --all-targets
-- -D warnings now clean.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crates/kebab-store-sqlite/snapshots/ingest_report.snapshot.json

@@ -43,5 +43,6 @@
     "root": "/home/u/KB"
   },
   "skipped": 0,
+  "unchanged": 0,
   "updated": 1
 }