Sql4json

Added — Object Mapping

• SQL4Json.queryAs and queryAsList — map query results directly to Java records, POJOs, or basic types (both single-source and JOIN variants).
• PreparedQuery.executeAs and executeAsList (String and JsonValue overloads).
• SQL4JsonEngine.queryAs and queryAsList.
• JsonValue.as(Class) and JsonValue.as(Class, Sql4jsonSettings) default methods on the sealed interface.
• MappingSettings subsection of Sql4jsonSettings with MissingFieldPolicy enum (IGNORE / FAIL).
• SQL4JsonMappingException (new sealed subclass of SQL4JsonException).

Added — Parameter Binding

• PreparedQuery.execute(String json, BoundParameters params) and execute(JsonValue, BoundParameters).
• PreparedQuery.execute(String json, Object... positionalParams) shortcut.
• PreparedQuery.execute(String json, Map<String, ?> namedParams) shortcut.
• PreparedQuery.executeAs / executeAsList with BoundParameters overloads.
• SQL4JsonEngine.query / queryAsJsonValue / queryAs / queryAsList with BoundParameters overloads.
• BoundParameters immutable carrier (named & positional modes, named() / positional() / of(Object...) / of(Map) factories, bind / bindAll, EMPTY singleton).
• Grammar support for ? (positional) and :name (named) placeholders throughout WHERE / SELECT / GROUP BY / HAVING / JOIN / function arguments.
• Dynamic LIMIT / OFFSET binding (placeholders accepted in both positions).
• IN-list expansion: IN (?) + collection bound → expanded to N literals; empty collection → zero-row predicate.
• LimitsSettings.maxParameters (default 1024) — DoS guard against placeholder flooding.
• SQL4JsonBindException (new sealed subclass of SQL4JsonException) — surfaced at substitute time for missing / extra / type-mismatch bindings, IN-list overflow, and LIMIT/OFFSET validation failures.

Changed

• Sql4jsonSettings gains a mapping component (all existing construction paths preserved via builder).
• Grammar now recognizes ? and :name as placeholders in value positions.
• LimitsSettings canonical-constructor signature extended (maxParameters) — public callers using .builder() unaffected.
• SQL4JsonEngine bypasses QueryResultCache for parameterized queries.
• Internal: ISO date/datetime/instant parsing consolidated into json.IsoTemporals; registry.DateCoercion delegates.