[elpete]

Complex query graphs were repeatedly copied during refresh preparation, pagination counts, ordered UNION compilation, and derived-table attachment, creating substantial allocation pressure.

This change skips root filters and orders that the consuming operation discards, reuses privately owned count/aggregate snapshots, compiles SQL Server ordered UNION branches without cloning, and compiles eligible derived tables/joins directly while copying their bindings. CTE hoisting and explicit wrapping policies retain the existing clone path; retained mutable query inputs remain isolated.

Validation:

• Full local qb suite: 3,416 passed, 10 skipped, zero failures/errors.
• Full local Quick suite using this qb: 688 passed, 4 skipped, zero failures/errors.
• Regression coverage checks SQL/bindings, nested caller mutation, compilation failure recovery, CTE hoisting, selective clone behavior, and retained graph isolation.
• Allocation benchmarks on Lucee 5.4.8.3-RevSQLPatch / Java 11 showed 34–45% lower allocation for duplicate count/aggregate snapshots, 88–93% for ordered UNION compilation, and 66–74% for complex derived attachments. These are separate synthetic operation measurements, not production latency or retained-heap claims.