BB1: full E40 S16F11 body — MF, PRRECIPEMETHOD, RCPVARS, PRPROCESSPARAMS

Replaces the simplified <L,3 PRJOBID PPID MTRLOUTSPEC> demo body with
the full SEMI E40-0705 §10.2 shape:

  <L,5 PRJOBID MF PRRECIPEMETHOD
       <L,2 PPID <L,n <L,2 RCPPARNM RCPPARVAL>>>
       <L,n MTRLOUTSPEC>
       <L,n <L,2 PARAMNAME PARAMVAL>>>

ProcessJob now carries the extra fields (MaterialFlag, ProcessRecipeMethod,
RcpVar[], ProcessParam[]) so a tool's recipe engine can later consume
the recipe-variable overrides and per-job process parameters.  Server
S16F11 dispatch populates them via the new ProcessJobStore::set_e40_extras
helper after a successful create.

MaterialFlag + ProcessRecipeMethod enums live in their own tiny header
(`e40_constants.hpp`) so process_jobs.hpp (the store) can use them
without dragging in messages_helpers.hpp (which would create a circular
include via data_model.hpp).

The simplified 3-arg HostHandler::send_create_process_job convenience
remains; it constructs a sensible-default PRJobCreateRequest internally.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

data/messages.yaml

@@ -2019,14 +2019,16 @@ messages:
         - {name: prjobid,    shape: {kind: scalar, item_type: ASCII}}
         - {name: prjobstate, shape: {kind: scalar, item_type: BINARY_BYTE, enum: ProcessJobState}}
 
-  # S16F11 / F12 — PRJobCreate.
+  # S16F11 / F12 — PRJobCreate.  Full E40-0705 §10.2 body:
   #
-  # Real E40-0705 S16F11 body is <L,5 PRJOBID MF PRRECIPEMETHOD
-  # RCPSPEC L MTRLOUTSPEC L PRPROCESSPARAMS>. We simplify to the
-  # three pieces that actually drive the demo state machine:
-  # PRJOBID, recipe (PPID), and the list of material identifiers. MF
-  # / PRRECIPEMETHOD / PRPROCESSPARAMS are tool-specific; layering
-  # them in is a YAML edit + builder overload, not surgery.
+  #   <L,5 PRJOBID MF PRRECIPEMETHOD RCPSPEC <L,n MTRLOUTSPEC> <L,n PRPROCESSPARAMS>>
+  #   where RCPSPEC = <L,2 PPID <L,n <L,2 RCPPARNM RCPPARVAL>>>
+  #         PRPROCESSPARAMS entry = <L,2 PARAMNAME PARAMVAL>
+  #
+  # The earlier simplified 3-field form (PRJOBID, PPID, MTRLOUTSPEC) is
+  # still available via a hand-written convenience overload
+  # `s16f11_pr_job_create_simple` for callers that don't care about
+  # MF / PRRECIPEMETHOD / process params.
   - id: S16F11
     stream: 16
     function: 11
@@ -2037,10 +2039,36 @@ messages:
       kind: list
       struct_name: PRJobCreateRequest
       fields:
-        - {name: prjobid,  shape: {kind: scalar, item_type: ASCII}}
-        - {name: ppid,     shape: {kind: scalar, item_type: ASCII}}
+        - {name: prjobid, shape: {kind: scalar, item_type: ASCII}}
+        - {name: mf,      shape: {kind: scalar, item_type: BINARY_BYTE, enum: MaterialFlag}}
+        - {name: prrecipemethod,
+           shape: {kind: scalar, item_type: BINARY_BYTE, enum: ProcessRecipeMethod}}
+        - name: rcpspec
+          shape:
+            kind: list
+            struct_name: RecipeSpec
+            fields:
+              - {name: ppid, shape: {kind: scalar, item_type: ASCII}}
+              - name: rcpvars
+                shape:
+                  kind: list_of
+                  element:
+                    kind: list
+                    struct_name: RecipeVariable
+                    fields:
+                      - {name: name,  shape: {kind: scalar, item_type: ASCII}}
+                      - {name: value, shape: {kind: scalar, item_type: ITEM}}
         - name: mtrloutspec
           shape: {kind: list_of, element: {kind: scalar, item_type: ASCII}}
+        - name: prprocessparams
+          shape:
+            kind: list_of
+            element:
+              kind: list
+              struct_name: ProcessParameter
+              fields:
+                - {name: name,  shape: {kind: scalar, item_type: ASCII}}
+                - {name: value, shape: {kind: scalar, item_type: ITEM}}
 
   - id: S16F12
     stream: 16