fallintoplace opened a new pull request, #1583:
URL: https://github.com/apache/iceberg-go/pull/1583

   ## What changed
   
   Validate that a position-delete table contains exactly one `file_path` 
column and exactly one `pos` column before indexing either field.
   
   ## Why
   
   The scanner indexed the first result from `FieldIndices` without checking 
its length. Missing required columns therefore caused an index-out-of-range 
panic, while duplicate columns were ambiguous.
   
   Regression coverage includes valid schemas, the optional `row` column, each 
missing-column case, neither column, and duplicate `pos` columns.
   
   ## Testing
   
   - `go test ./table`
   - `go vet ./table`


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