refactor(v3): rename ore_block_u64_8_256 -> ore_block_256 (SEM type, repo-wide)

Behaviour-preserving rename of the self-contained eql_v3 SEM index-term type
to its width-agnostic name, ahead of the N-block ORE comparator work. The
eql_v2 public API (eql_v2.ore_block_u64_8_256, src/ore_block_u64_8_256/, v2
operators/docs/tests) is deliberately UNCHANGED.

Scope (eql_v3 only):
- src/v3/sem/ore_block_u64_8_256/ -> src/v3/sem/ore_block_256/ (dir + symbols)
- eql-scalars Term::Ore ctor + REQUIRE paths; eql-codegen doc/assertion
- committed codegen goldens (int2/int4/int8/date/text incl text_search)
- eql-types: OreBlockU64_8_256 newtype -> OreBlock256, SQL constructor doc
- tasks/pin_search_path.sql (v3 block only), splinter.sh (v3 rows only),
  clean_install_v3.sh, drop_operator_classes.sql (v3 opclass only)
- v3 SQLx family tests (sem/mutations/inlinability), preserving the
  eql_v2.compare_ore_block_u64_8_256_terms parity reference in sem.rs
- v3 docs (CLAUDE, adding-a-scalar, eql-functions, sql-support, analysis),
  CHANGELOG eql_v3-qualified mentions

Covers the new old-name references introduced by #280 (text-search).
Verified: codegen:parity (byte-for-byte), test:crates (fmt+clippy+tests),
clean build + v3 release artifact carries no eql_v2 symbol. The DB-backed
clean_install_v3 gate runs in CI (Docker unavailable locally).

Deliberately NOT renamed: tests/sqlx/src/index_types.rs ORE_BLOCK_U64_8_256
(crypto wire index-term identifier, not the SQL type name).

Author: tobyhede

CHANGELOG.md

@@ -23,14 +23,14 @@ Each entry that ships in a published release links to the PR that introduced it.
 ### Added
 
 - **`eql_v3` encrypted-JSONB (SteVec) document type.** A self-contained encrypted-JSONB surface in the `eql_v3` schema: the storage domain `eql_v3.json` plus `eql_v3.ste_vec_entry` (a single sv element) and `eql_v3.ste_vec_query` (a containment needle). Encrypted JSON documents are searchable without decryption via document containment (`@>`, `<@`), field/array access (`->`, `->>`, `jsonb_path_query` / `_exists` / `_query_first`, `jsonb_array_length` / `_elements` / `_elements_text`), entry equality (`=`, `<>`) on extracted leaves, and entry-level ordered range (`<`, `<=`, `>`, `>=`) on ordered leaves via CLLW ORE (`eql_v3.ore_cllw`). Comparisons are leaf-level only: root-document `=`, `<>`, `<`, `<=`, `>`, `>=` are blocked (they raise rather than falling through to native whole-`jsonb` comparison). Index via a functional index on the `eql_v3.eq_term` / `eql_v3.ore_cllw` extractors (entry equality / ordering) and `eql_v3.to_ste_vec_query(col)::jsonb jsonb_path_ops` GIN (containment); ordered leaves get a default btree opclass on `eql_v3.ore_cllw`. Every other native `jsonb` operator reachable through domain fallback (`?`, `?|`, `?&`, `@?`, `@@`, `#>`, `#>>`, `-`, `#-`, `||`, and the root comparisons above) is blocked — it raises rather than silently routing to plaintext-jsonb semantics. Note: because `eql_v3.json` is a `jsonb` domain, selector/operand literals must be typed (`col -> 'sel'::text` — the CipherStash Proxy interface passes typed parameters); a *bare untyped* literal (`col -> 'sel'`) resolves to the native `jsonb` operator instead of the encrypted one (PostgreSQL reduces the domain to its base type for unknown-typed literals), and the same caveat applies to the native-jsonb blockers — see `docs/decisions/2026-06-10-eql-v3-json-type-kind.md`. The whole surface owns its SEM index-term types (`eql_v3.hmac_256`, `eql_v3.ore_cllw`) and has no `eql_v2` dependency (CI-gated by `test:self_contained_v3` and the standalone `release/cipherstash-encrypt-v3.sql` installer). Why: a type-safe, searchable encrypted JSONB document column namespaced under `eql_v3`, complementing the scalar encrypted-domain families. The existing `eql_v2` SteVec surface on `eql_v2_encrypted` is unchanged. ([#267](https://github.com/cipherstash/encrypt-query-language/pull/267))
-- **`eql_v3` encrypted-domain schema, with the `int4` family as its first member.** Encrypted-domain type families now live in a new, additional `eql_v3` schema (the existing `eql_v2` schema is unchanged — it keeps the core types/operators and stays the documented public API). Four jsonb-backed domains for encrypted `int4` columns: `eql_v3.int4` (storage-only), `eql_v3.int4_eq` (`=` / `<>` via HMAC), and `eql_v3.int4_ord` / `eql_v3.int4_ord_ore` (also `<` `<=` `>` `>=` via ORE block terms). Supported comparisons resolve to inlinable wrappers; the native `jsonb` operator surface reachable through domain fallback is blocked (raises rather than silently mis-resolving). Each domain's `CHECK` requires the EQL envelope (`v`, `i`), the ciphertext (`c`), and the variant's index term(s), and pins the payload version (`VALUE->>'v' = '2'`, matching `eql_v2._encrypted_check_v`) — so a missing key or wrong-version payload is rejected on insert or cast rather than surfacing later at query time. Index via a functional index on the `eql_v3.eq_term` / `eql_v3.ord_term` extractors, not an operator class on the domain. The extractors return the searchable-encrypted-metadata index-term types `eql_v3.hmac_256` / `eql_v3.ore_block_u64_8_256`, which `eql_v3` owns directly (see the self-contained `eql_v3` schema entry below). Why: a type-safe, per-capability encrypted integer column instead of the untyped `eql_v2_encrypted`, namespaced under its own schema. This is the reference scalar implementation for the generated domain family. ([#239](https://github.com/cipherstash/encrypt-query-language/pull/239), supersedes [#225](https://github.com/cipherstash/encrypt-query-language/pull/225))
+- **`eql_v3` encrypted-domain schema, with the `int4` family as its first member.** Encrypted-domain type families now live in a new, additional `eql_v3` schema (the existing `eql_v2` schema is unchanged — it keeps the core types/operators and stays the documented public API). Four jsonb-backed domains for encrypted `int4` columns: `eql_v3.int4` (storage-only), `eql_v3.int4_eq` (`=` / `<>` via HMAC), and `eql_v3.int4_ord` / `eql_v3.int4_ord_ore` (also `<` `<=` `>` `>=` via ORE block terms). Supported comparisons resolve to inlinable wrappers; the native `jsonb` operator surface reachable through domain fallback is blocked (raises rather than silently mis-resolving). Each domain's `CHECK` requires the EQL envelope (`v`, `i`), the ciphertext (`c`), and the variant's index term(s), and pins the payload version (`VALUE->>'v' = '2'`, matching `eql_v2._encrypted_check_v`) — so a missing key or wrong-version payload is rejected on insert or cast rather than surfacing later at query time. Index via a functional index on the `eql_v3.eq_term` / `eql_v3.ord_term` extractors, not an operator class on the domain. The extractors return the searchable-encrypted-metadata index-term types `eql_v3.hmac_256` / `eql_v3.ore_block_256`, which `eql_v3` owns directly (see the self-contained `eql_v3` schema entry below). Why: a type-safe, per-capability encrypted integer column instead of the untyped `eql_v2_encrypted`, namespaced under its own schema. This is the reference scalar implementation for the generated domain family. ([#239](https://github.com/cipherstash/encrypt-query-language/pull/239), supersedes [#225](https://github.com/cipherstash/encrypt-query-language/pull/225))
 - **`eql_v3.int2` encrypted-domain type family.** Four jsonb-backed domains for encrypted `int2` columns — `eql_v3.int2` (storage-only), `eql_v3.int2_eq` (`=` / `<>` via HMAC), and `eql_v3.int2_ord` / `eql_v3.int2_ord_ore` (also `<` `<=` `>` `>=` via ORE block terms, with `MIN` / `MAX` aggregates) — generated from the `int2` row in `eql-scalars::CATALOG` by the same materializer as the `eql_v3.int4` reference. Index via a functional index on the `eql_v3.eq_term` / `eql_v3.ord_term` extractors, not an operator class on the domain. Why: a type-safe, per-capability encrypted `smallint` column, proving the scalar generator generalizes beyond the `int4` reference. ([#243](https://github.com/cipherstash/encrypt-query-language/pull/243))
 - **`eql_v3.int8` encrypted-domain type family.** Four jsonb-backed domains for encrypted `int8` columns — `eql_v3.int8` (storage-only), `eql_v3.int8_eq` (`=` / `<>` via HMAC), and `eql_v3.int8_ord` / `eql_v3.int8_ord_ore` (also `<` `<=` `>` `>=` via ORE block terms, with `MIN` / `MAX` aggregates) — generated from the `int8` row in `eql-scalars::CATALOG` by the same materializer as the `eql_v3.int4` reference. Index via a functional index on the `eql_v3.eq_term` / `eql_v3.ord_term` extractors, not an operator class on the domain. Why: a type-safe, per-capability encrypted `bigint` column, extending the scalar generator across the full 64-bit integer width. ([#253](https://github.com/cipherstash/encrypt-query-language/pull/253))
 - **`eql_v3.date` encrypted-domain type family.** Four jsonb-backed domains for encrypted `date` columns — `eql_v3.date` (storage-only), `eql_v3.date_eq` (`=` / `<>` via HMAC), and `eql_v3.date_ord` / `eql_v3.date_ord_ore` (also `<` `<=` `>` `>=` via ORE block terms, with `MIN` / `MAX` aggregates) — generated from the `date` row in `eql-scalars::CATALOG` by the same materializer as the `eql_v3.int4` reference. Plaintexts encrypt under the `date` cast and compare via the same ORE block terms as the integer scalars (ORE is plaintext-agnostic — dates order like integers). Index via a functional index on the `eql_v3.eq_term` / `eql_v3.ord_term` extractors, not an operator class on the domain. Why: the first **non-integer ordered** scalar encrypted-domain type — a type-safe, per-capability encrypted `date` column — proving the generator and SQLx test matrix generalize beyond fixed-width integers. ([#256](https://github.com/cipherstash/encrypt-query-language/pull/256))
 - **`eql_v3.timestamptz` encrypted-domain type family (equality-only).** Two jsonb-backed domains for encrypted `timestamptz` columns — `eql_v3.timestamptz` (storage-only) and `eql_v3.timestamptz_eq` (`=` / `<>` via HMAC) — generated from the `timestamptz` row in `eql-scalars::CATALOG` by the same materializer as the `eql_v3.date` family. Values are **UTC-normalized** (cipherstash has no timezone-preserving type): plaintexts encrypt under the `timestamp` cast. Index via a functional index on the `eql_v3.eq_term` extractor, not an operator class on the domain. **Ordering (`<` `<=` `>` `>=`, `MIN` / `MAX`) is deferred:** cipherstash encrypts `Plaintext::Timestamp` at native 12-block ORE width, but EQL's only ORE comparator (`eql_v2.compare_ore_block_u64_8_256_term`) is hardcoded to 8 blocks, so ordered timestamptz domains would silently mis-order. There are no `eql_v3.timestamptz_ord` / `_ord_ore` domains and no timestamptz `MIN` / `MAX` aggregates until a wide-ORE (12-block) term lands — tracked in [#241](https://github.com/cipherstash/encrypt-query-language/issues/241). Why: a type-safe, equality-searchable encrypted UTC-timestamp column, stacking on the `date` temporal-scalar foundation; ordering follows once the comparator supports the native ciphertext width. ([#257](https://github.com/cipherstash/encrypt-query-language/pull/257))
 - **Per-domain `MIN` / `MAX` aggregates for the encrypted-domain family.** `eql_v3.min(eql_v3.<T>_ord)` / `eql_v3.max(eql_v3.<T>_ord)` (and the `_ord_ore` twin) are generated for every ord-capable scalar variant, giving type-safe extrema on domain-typed columns — comparison routes through the variant's `<` / `>` operator (ORE block term, no decryption). The aggregates are declared `PARALLEL = SAFE` with a combine function (the state function itself — min/max are associative), so PostgreSQL can use partial/parallel aggregation on large `GROUP BY` workloads. Why: the new domain types previously had no equivalent of the composite-type aggregates. The existing `eql_v2.min(eql_v2_encrypted)` / `eql_v2.max(eql_v2_encrypted)` aggregates are **retained** and continue to work on `eql_v2_encrypted` columns; the per-domain aggregates are additive and coexist with them. ([#239](https://github.com/cipherstash/encrypt-query-language/pull/239))
 - **`eql_v3.text` encrypted-domain family (`text`, `text_eq`, `text_match`, `text_ord`, `text_ord_ore`, `text_search`).** Adds equality (`=` / `<>` via HMAC), match (`@>` / `<@` via a new self-contained `eql_v3.bloom_filter` SEM index term), and ORE ordering (`<` `<=` `>` `>=`, `min` / `max`) for encrypted text, at parity with EQL v2 text — generated from the `text` row in `eql-scalars::CATALOG` by the same materializer as the `eql_v3.int4` reference. `text` is the first scalar to add a new index `Term` (`Bloom`) and the first non-integer, unbounded ordered kind (lexicographic pivots, hand-written `impl ScalarType`). The combined **`text_search`** domain carries all three capabilities in one type — `=` / `<>` via HMAC, `<` `<=` `>` `>=` / `min` / `max` via ORE, and `@>` / `<@` via bloom filter. Index via a functional index on the `eql_v3.eq_term` / `eql_v3.ord_term` / `eql_v3.match_term` extractors, not an operator class on the domain. Why: brings searchable encrypted text to the namespaced, `eql_v2`-free `eql_v3` surface. Match is exposed as bloom-filter containment on the `text_match` / `text_search` domains — deliberately *not* SQL `LIKE` (no wildcard/anchoring; probabilistic ngram containment) — and never backs equality. **Equality on the ordered text domains (`text_ord`, `text_ord_ore`) and on `text_search` always routes `=` / `<>` through `hm` (exact HMAC), never the ORE term — ORE is not exact-equality for text** (integer ordered domains keep exact ORE equality, which is lossless for them). ([#260](https://github.com/cipherstash/encrypt-query-language/pull/260))
-- **Self-contained `eql_v3` schema + standalone `release/cipherstash-encrypt-v3.sql` installer.** The `eql_v3` encrypted-domain surface no longer depends on `eql_v2` at runtime: it now owns its own copies of the searchable-encrypted-metadata (SEM) index-term types — `eql_v3.hmac_256` and `eql_v3.ore_block_u64_8_256` (with its btree operator class) — so the `eql_v3.eq_term` / `eql_v3.ord_term` extractors return `eql_v3` types and no `eql_v2.<symbol>` appears anywhere in the v3 SQL. The whole v3 surface relocated under a single `src/v3/` tree (`src/v3/sem/` for the hand-written SEM types, `src/v3/scalars/` for the generated domain families). A new build variant ships the `eql_v3` schema on its own as `release/cipherstash-encrypt-v3.sql`, installable into a database with no `eql_v2` present; a CI gate greps that artifact and its dependency closure to keep it `eql_v2`-free. Why: a clean foundation for the per-scalar encrypted-domain model to stand alone, ahead of it replacing the `eql_v2_encrypted` composite column type. This is additive — a new schema and a new artifact — and leaves `eql_v2` byte-for-byte unchanged. ([#255](https://github.com/cipherstash/encrypt-query-language/pull/255))
+- **Self-contained `eql_v3` schema + standalone `release/cipherstash-encrypt-v3.sql` installer.** The `eql_v3` encrypted-domain surface no longer depends on `eql_v2` at runtime: it now owns its own copies of the searchable-encrypted-metadata (SEM) index-term types — `eql_v3.hmac_256` and `eql_v3.ore_block_256` (with its btree operator class) — so the `eql_v3.eq_term` / `eql_v3.ord_term` extractors return `eql_v3` types and no `eql_v2.<symbol>` appears anywhere in the v3 SQL. The whole v3 surface relocated under a single `src/v3/` tree (`src/v3/sem/` for the hand-written SEM types, `src/v3/scalars/` for the generated domain families). A new build variant ships the `eql_v3` schema on its own as `release/cipherstash-encrypt-v3.sql`, installable into a database with no `eql_v2` present; a CI gate greps that artifact and its dependency closure to keep it `eql_v2`-free. Why: a clean foundation for the per-scalar encrypted-domain model to stand alone, ahead of it replacing the `eql_v2_encrypted` composite column type. This is additive — a new schema and a new artifact — and leaves `eql_v2` byte-for-byte unchanged. ([#255](https://github.com/cipherstash/encrypt-query-language/pull/255))
 - **`eql_v3.min` / `eql_v3.max` aggregates over `eql_v3.ste_vec_entry`.** SteVec document entries extracted at a selector (`doc -> 'sel'`) can now be aggregated like ordered scalars: `eql_v3.min(doc -> 'sel')` / `eql_v3.max(...)` return the entry with the smallest / largest ordered leaf. Ordering routes through the entry's `oc` (CLLW ORE) term via `eql_v3.ore_cllw` — the same comparator the entry `<` / `<=` / `>` / `>=` operators use, not the scalar Block-ORE `ord_term`. Only `oc`-carrying entries are orderable: an entry without an `oc` term (`eql_v3.ore_cllw` returns NULL) is non-orderable and is ignored by the aggregate — the same way the `eql_v3.ore_cllw` btree NULL-filters such rows — so a mix of `oc`-carrying and `oc`-less entries yields the extremum of the orderable subset rather than a corrupted result. Declared `PARALLEL = SAFE` with a combine function (the state function itself), so partial / parallel aggregation is available on large `GROUP BY` workloads. Why: brings encrypted-JSONB entry ordering to parity with the scalar encrypted-domain families' `MIN` / `MAX`, and lets the shared scalar behaviour matrix cover entry aggregation. Additive — the document and entry comparison surface is otherwise unchanged. ([#267](https://github.com/cipherstash/encrypt-query-language/pull/267))
 
 ### Changed