Improvement options

[gmerr3]

Annotation inference & entrypoint identification - try to minimize "correct but unhelpful" fixes
Annotation removal - remove @DefaultQualifier etc. annotations included in LLM input.
Null field replacement - replace Specimin-generated nulls with /.../ or someValue or some other token

Long method/diff detection - this covers 2 of the 4 "unacceptable" outputs from the test results

Don't null check return values? - The other 2 unacceptable ones were both return value changes.
CFG analysis to detect semantically equivalent changes?