Add SQLITE_EMPTY tests for non-vector column inputs (primary key,
partition key, unknown types) and SQLITE_ERROR tests for zero
dimensions and empty brackets. Tighten existing error assertions
from rc != SQLITE_OK to exact expected return codes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Expand sqlite-vec-internal.h with scanner/tokenizer types, vector column
definition types, and parser function declarations
- Fix min_idx declaration to match actual C signature (add candidates,
bTaken, k_used params)
- Compile test-unit with -DSQLITE_CORE and link vendor/sqlite3.c so
sqlite3 API functions (sqlite3_strnicmp, sqlite3_mprintf, etc.) resolve
- Add unit tests for vec0_token_next, Vec0Scanner, and
vec0_parse_vector_column
- Fix Rust build.rs to define SQLITE_CORE and compile vendor/sqlite3.c
- Fix Rust min_idx FFI signature and wrapper to match actual C function
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
