MatrixOne ODBC 9.7.0-mo.1 (Windows x64 preview)

# MatrixOne ODBC 9.7.0-mo.1 (Windows x64 preview)

First developer preview of the self-contained MatrixOne ODBC driver and Power
BI connector for Windows x64, validated against MatrixOne main at
0f145bbc0a020e979e5bc2515de1a8a21ae4f222.

Highlights:

• Self-contained MSI and portable ZIP; no customer-side MySQL SDK or MySQL
  Server installation is required.
• Unicode and ANSI ODBC drivers, setup utility, required runtime libraries,
  authentication plugins, and MatrixOne.mez are bundled.
• Real Power BI Desktop Import and DirectQuery validation passed.
• DirectQuery grouping/aggregation returned the expected Unicode and decimal
  results (??=1234.50, total 1287.25).
• Power Query error handling now accepts both table- and list-shaped ODBC error
  details, and the connector uses opportunistic TLS for standard MatrixOne
  deployments.
• Unicode prepared-parameter and MatrixOne regression diagnostics were
  strengthened in the deep test suite.

Install the MSI as administrator, or extract the portable ZIP and run
Install.bat as administrator. For the unsigned preview connector, Power BI
Desktop must be configured to allow unvalidated custom extensions and then
restarted. See docs/POWER_BI.md in the ZIP.

Validation summary: both Unicode and ANSI smoke suites passed; both deep suites
reported 13 passes, 5 linked XFAILs, and 0 unknown failures. See the attached
test report for full versions, known MatrixOne issues, and remaining validation
scope.

This is an unsigned prerelease intended for development and compatibility
testing, not a production support declaration.

Power BI coverage note: this preview used a purpose-built five-row fixture. Multi-table public datasets, full query-folding coverage, scale/performance, Power BI Service, and on-premises gateway remain release gates. See the attached Chinese test report: TEST-REPORT-v9.7.0-mo.1.md.