ProgramMemory refactor - eliminate copies of memory (#5273)

* refactor program memory for encapsulation and remove special treatment of return values

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Refactor ProgramMemory to isolate mutation

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Refactor ProgramMemory

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Generated output

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Cache the result of executing modules for their items

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Compress envs when popped

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Remove the last traces of geometry from the memory module

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* docs

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Fixups

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Frontend

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Improve Environment GC

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Fixup mock execution frontend and interpreter, misc bug fixes

Signed-off-by: Nick Cameron <nrc@ncameron.org>

---------

Signed-off-by: Nick Cameron <nrc@ncameron.org>

src/lib/commandBarConfigs/modelingCommandConfig.ts

@@ -576,7 +576,7 @@ export const modelingMachineCommandConfig: StateMachineCommandSetConfig<
             ast: structuredClone(kclManager.ast),
             selectionRanges,
             transformInfos: transforms,
-            programMemory: kclManager.programMemory,
+            memVars: kclManager.variables,
             referenceSegName: '',
           })
           if (err(sketched)) return KCL_DEFAULT_LENGTH