v1.2.0: skip unchanged writes, transactional schema/root counters, snapshot replay for meta:events 0-0 (drops boot republish), collect-once search driver

README.md

@@ -428,9 +428,8 @@ the repo-root [`METADATA_KEYS.md`](../../METADATA_KEYS.md).
 | `internal/storage` | Flat-key records (`client.go`), UUIDv7 minting, CID reverse index (`cid_resolution.go`), schema sentinel, search over `kv_field` + FTS (`search.go`), UDL store (`udl.go`, `udl_admin.go`), stats. |
 | `internal/cid` | CID parsing + rank ladder for canonical-CID selection (`cid-rank-vectors.json`, guarded by the meta-root `scripts/check-cid-vectors.sh`). |
 | `internal/identity` | Multi-account secp256k1 keystore, challenge/proof-of-possession, signature verification. |
-| `internal/events` | Boot-time republish of every field into `meta:events` (`meta_publisher.go`); live events are written by `internal/kv`. |
 | `internal/api` | HTTP server + all handlers + SSE event endpoints + search matchers + `/api/stats`. |
-| `internal/schema` | Live per-field schema indexer (consumes `meta:events`). |
+| `internal/schema` | Per-field schema, folded from counters the write path keeps exact (`idx:schema/…`). |
 | `internal/snapshot` | Snapshot export / import / wipe. |
 | `internal/watcher` | File system scanner, MidHash256 computation, dispatcher, state registry. |
 | `internal/watchers` | Polling-based watcher configurations (manager + poller + handlers). |
@@ -447,10 +446,12 @@ the repo-root [`METADATA_KEYS.md`](../../METADATA_KEYS.md).
 5. Start beacon v2 node (unless ENABLE_UDP_DISCOVERY=false)
 6. Construct API server (identity keystore migration, watcher, watchers,
    mounts, WebDAV)
-7. Start API server + pollers; start MetaPublisher + schema Indexer, then
-   republish existing metadata onto meta:events in the background
-   (5k events per transaction)
-8. Wait for SIGINT/SIGTERM, shutdown in reverse order
+7. EnsureCounters — one-time build of the derived counters (record count,
+   per-field schema) on a store that predates them; blocking, ~1 min at 169k
+   records, then never again
+8. Start API server + pollers (no republish: consumers that want the whole
+   state ask /api/events/meta for `0-0` and get a snapshot)
+9. Wait for SIGINT/SIGTERM, shutdown in reverse order
 ```
 
 ## Dependencies