fix(rename): handle variables in dynamic property selectors#174
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Dynamic property selectors like `$message->{$attribute}` were only partially
walked. The scope collector skipped selector expressions when tracking local
variable reads, which caused false `unused_variable` diagnostics for the
selector variable.
The symbol map extractor also ignored non-identifier property selectors, so
find-references and rename missed variable occurrences inside dynamic property
accesses. Renaming `$attribute` updated plain variable uses but not the
selector inside `$message->{$attribute}`.
Walk selector expressions during scope collection and emit variable symbol
spans for dynamic property selectors in the symbol map. Add regression tests
covering unused-variable diagnostics, references, and rename behavior for this
pattern.
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Dynamic property selectors like
$message->{$attribute}were only partially walked. The scope collector skipped selector expressions when tracking local variable reads, which caused falseunused_variablediagnostics for the selector variable.The symbol map extractor also ignored non-identifier property selectors, so find-references and rename missed variable occurrences inside dynamic property accesses. Renaming
$attributeupdated plain variable uses but not the selector inside$message->{$attribute}.Walk selector expressions during scope collection and emit variable symbol spans for dynamic property selectors in the symbol map. Add regression tests covering unused-variable diagnostics, references, and rename behavior for this pattern.