The PR description/example shows structural diffs including a per-declaration unified diff hunk (base/head/@@) for modified declarations, but the current implementation only outputs summary lines like function_declaration X: modified without any intra-declaration diff. Either update the implementation to include the intended per-declaration diff output (or at least the changed declaration text), or adjust the PR description/docs/tests so the advertised output matches actual behavior.

The PR description/example shows structural diffs including a per-declaration unified diff hunk (base/head/@@) for modified declarations, but the current implementation only outputs summary lines like function_declaration X: modified without any intra-declaration diff. Either update the implementation to include the intended per-declaration diff output (or at least the changed declaration text), or adjust the PR description/docs/tests so the advertised output matches actual behavior. #1999