[magnusp]

Fixes #103.

Contract: Hrana 3 is the source of truth for transport, values, metadata, batching, transactions, and error reporting. java.sql is the source of truth for the JDBC surface. xerial/sqlite-jdbc is a behavioral reference and conformance foundation, never a copy target.

Change

isWordChar in SqlTableReference and LibsqlResultSetMetaData now treats every character at or above 0x80 as an identifier character, matching SQLite. SqlTableReference.UNQUOTED_IDENTIFIER accepts the same range, because identifierOf re-validates word tokens against that pattern; without it the tokenizer would still split användare. ASCII-only behavior is unchanged.

Base aad9c7e456fad5c874e8efdc6f6c2d368244b654, head c47144e6935ed9b145cf2e58eca7dfd39387d526.

Red and green

• Red at trunk code with the new tests: 7 failures, Tests run: 66, Failures: 7 (/tmp/xerial-parity-i103/lane-1-regression.log). SqlTableReferenceTest.resolvesNonAsciiTableAndColumn got [null] instead of användare; LibsqlResultSetMetaDataTest.resolvesNonAsciiTableName got an empty table name.
• Green at head: SqlTableReferenceTest 34/34, LibsqlResultSetMetaDataTest 32/32, BUILD SUCCESS.

Lanes

Lane	Command	Result
1	targeted tests at trunk vs head	red 7 failures, green 66/66
2	LibsqlResultSetMetaDataTest	32/32; getTableName returns användare
3	non-ASCII table + anv shadow (LibsqlResultSetMetaDataTest, prefix case)	32/32; reports användare, not anv
4	./mvnw -pl libsql-jdbc test	245/245, BUILD SUCCESS
5	./mvnw -pl libsql-conformance -am verify	123 tests, 0 failures, 1 skipped, BUILD SUCCESS
6	./mvnw -pl libsql-conformance -am -Pxerial-control verify	100 tests, 0 failures, 1 skipped, BUILD SUCCESS
7	./mvnw spotless:check	BUILD SUCCESS
8	./mvnw test	BUILD SUCCESS
9	parser/result-set suite (98 tests)	BUILD SUCCESS; no ASCII case changed outcome
10	./mvnw -pl libsql-jdbc -am package -DskipTests	BUILD SUCCESS; jar and shaded jar built

Perf: ./mvnw -pl libsql-jdbc test medians, three interleaved runs per side: trunk 2.08 s, head 2.08 s (within 10%). Logs in /tmp/xerial-parity-i103/.

Divergences

• UNQUOTED_IDENTIFIER gained the \x80-\uFFFF range. The plan's Build box names only isWordChar, but identifierOf rejects any word token outside that pattern, so the tokenizer fix alone cannot make användare resolve.
• LibsqlResultSetMetaDataTest is not in the Files block; lane 2 names it explicitly, so the two metadata cases live there.
• resolvesQuotedNonAsciiNames mixes quoted names with an unquoted non-ASCII column, so it fails at trunk as lane 1 requires. The fully quoted assertion (SELECT "namn_ö" FROM "användare") already passed at trunk and is kept as regression coverage only.

Tests added: non-ASCII tables, columns, table/column aliases, quoted and bracketed names, SELECT * expansion, a table named anv shadowing användare, and the metadata path.