Fix json_strings recipe: refresh output captured on Spice v1.x

[claudespice]

Summary

Every console block in this recipe was captured on a v1.x runtime in December 2024. I re-ran the recipe end to end against stable v2.1.2 and replaced the blocks with what it actually prints today. Values and row counts are unchanged — only the output shape drifted.

• SQL results carry a data-type row. Since v2.0.0 the SQL REPL formats results with format_batches_with_types, which prints the column types under the names and centers the header. The recipe showed the older untyped, left-aligned header.
• describe returns four columns. It gained a leading table_schema; the recipe showed three.
• The -> derived column name changed. properties->'inventory' now projects as properties -> 'inventory', not products.properties -> Utf8("inventory").
• The startup log is stale. It advertised a metrics listener on 127.0.0.1:9090 and an OpenTelemetry listener on 127.0.0.1:50052 — neither is emitted by a default v2.1.2 run — and Initialized results cache; is now three separate sql/search/embeddings cache lines.

Verified against

spiceai/spiceai at v2.1.2 — crates/repl/src/pretty.rs (format_batches_with_types, unconditional in non-expanded mode) and crates/repl/src/lib.rs.

Evidence

Ran it. Official v2.1.2 release binaries, this recipe's own spicepod.yaml, this recipe's own queries in README order:

$ spice sql
sql> describe products;
+--------------+-------------+-----------+-------------+
| table_schema | column_name | data_type | is_nullable |
|    varchar   |   varchar   |  varchar  |   varchar   |
+--------------+-------------+-----------+-------------+
| public       | id          | Int64     | YES         |
| public       | name        | Utf8      | YES         |
| public       | properties  | Utf8      | YES         |
+--------------+-------------+-----------+-------------+

Time: 0.00167675 seconds. 3 rows.

Every table in the diff is pasted from that session (the per-query Time: lines are dropped, matching the recipe's existing style).

Note for maintainers

The missing type row is not specific to this recipe — 74 of the cookbook's READMEs show the pre-v2.0 untyped header. Two recipes captured on v2.x (catalogs/unity_catalog, elasticsearch/connector) already show the typed form, so the repo is currently inconsistent. This PR fixes one recipe that runs locally with no Docker or secrets; the rest need a run each to regenerate honestly. Happy to work through them if that is wanted — or to hold off, if the type row is considered noise that should change on the CLI side instead.