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diff --git a/docs/iterator-pipeline.puml b/docs/iterator-pipeline.puml
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-@startuml iterator-pipeline
-!theme plain
-title Volcano Iterator Model - Process Pipeline
-
-component "Scan Iterator\n(Process)" as P1 {
-  [Read from Relation] as S1
-}
-
-component "Select Iterator\n(Process)" as P2 {
-  [Apply Predicate] as S2
-}
-
-component "Project Iterator\n(Process)" as P3 {
-  [Filter Attributes] as S3
-}
-
-component "Sort Iterator\n(Process)" as P4 {
-  [Sort All Tuples] as S4
-}
-
-component "Take Iterator\n(Process)" as P5 {
-  [Limit N Tuples] as S5
-}
-
-P1 -right-> P2: {next, Pid}\n{tuple, T} | done
-P2 -right-> P3: {next, Pid}\n{tuple, T} | done
-P3 -right-> P4: {next, Pid}\n{tuple, T} | done
-P4 -right-> P5: {next, Pid}\n{tuple, T} | done
-
-note bottom of P1
-  Each iterator is an
-  independent Erlang process
-
-  Message passing protocol:
-  - Request: {next, CallerPid}
-  - Response: {tuple, Data} | done
-
-  Benefits:
-  - Lazy evaluation
-  - Memory-bounded
-  - Composable
-  - Concurrent
-end note
-
-@enduml