Greengage DB 6.29.2 product release

Fixed vacuum compaction failures after rolled-back transactions and cleaned up orphaned segment files

Prevented memory corruption when aborting column additions on append-optimized column-oriented (AOCO) tables and ensured empty relation files are flushed to disk with fsync()

Improved the cost model for hashing small tables; fixed infinite recursion and crashes during statistics derivation

Corrected hash join spill file handling and subplan logic for correlated functions

Fixed SIGSEGV crashes during master out-of-memory (OOM) conditions and InitPlan execution; improved cleanup of idle reader gangs

Resolved inconsistencies in DROP IF EXISTS behavior and fixed Perfmon metric escaping

Corrected validation of max_tm_gxacts values

Allowed the standby to start with hot_standby = on in utility mode

Fixed flakiness in fts_segment_reset tests

Automated .deb package uploads to GitHub Releases

Fixed package building for external pull requests and branch names containing slashes

Restored stability to the main build pipeline