Fix ragged broadcast invalidations: BroadcastStyle, not AbstractArrayStyle

Change RaggedVectorOfArrayStyle to subtype BroadcastStyle instead of
AbstractArrayStyle. This eliminates all invalidations from the ragged
sublibrary except the unavoidable 1 from materialize (needed because
non-AbstractArray types can't provide axes/size for instantiate).

Invalidation breakdown for `using RecursiveArrayToolsRaggedArrays`:
- 1 from our materialize override (unavoidable for non-AbstractArray)
- 17 from Accessors.jl (SII transitive dep, not our code)
- 20 from Base cat chain (SII transitive dep, not our code)

Also update sublibrary compat bounds to RecursiveArrayTools v4.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ChrisRackauckas

docs/src/assets/Project.toml

@@ -0,0 +1,7 @@
+[deps]
+Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+RecursiveArrayTools = "731186ca-8d62-57ce-b412-fbd966d074cd"
+
+[compat]
+Documenter = "1.3"
+RecursiveArrayTools = "3"

lib/RecursiveArrayToolsArrayPartitionAnyAll/Project.toml

@@ -6,7 +6,7 @@ version = "1.0.0"
 RecursiveArrayTools = "731186ca-8d62-57ce-b412-fbd966d074cd"
 
 [compat]
-RecursiveArrayTools = "3.48"
+RecursiveArrayTools = "4"
 julia = "1.10"
 
 [extras]

lib/RecursiveArrayToolsRaggedArrays/Project.toml

@@ -4,10 +4,12 @@ version = "1.0.0"
 
 [deps]
 RecursiveArrayTools = "731186ca-8d62-57ce-b412-fbd966d074cd"
+SnoopCompileCore = "e2b509da-e806-4183-be48-004708413034"
 SymbolicIndexingInterface = "2efcf032-c050-4f8e-a9bb-153293bab1f5"
 
 [compat]
-RecursiveArrayTools = "3.48"
+RecursiveArrayTools = "4"
+SnoopCompileCore = "3.1.1"
 SymbolicIndexingInterface = "0.3.35"
 julia = "1.10"
 

lib/RecursiveArrayToolsRaggedArrays/src/RecursiveArrayToolsRaggedArrays.jl

@@ -642,7 +642,7 @@ end
 # Broadcasting — column-wise, preserving ragged structure
 # ═══════════════════════════════════════════════════════════════════════════════
 
-struct RaggedVectorOfArrayStyle{N} <: Broadcast.AbstractArrayStyle{N} end
+struct RaggedVectorOfArrayStyle{N} <: Broadcast.BroadcastStyle end
 RaggedVectorOfArrayStyle{N}(::Val{N}) where {N} = RaggedVectorOfArrayStyle{N}()
 RaggedVectorOfArrayStyle(::Val{N}) where {N} = RaggedVectorOfArrayStyle{N}()
 
@@ -709,7 +709,10 @@ _ragged_unpack_args(::Any, ::Tuple{}) = ()
     return RaggedVectorOfArray(u)
 end
 
-# Override materialize to skip instantiate (which needs axes/size)
+# Override materialize to skip instantiate (which needs axes/size on non-AbstractArray types)
+# This causes 1 invalidation tree from Base.Broadcast.materialize(::Broadcasted), but it's
+# unavoidable for non-AbstractArray types that need custom broadcasting, and this sublibrary
+# is opt-in to isolate exactly this kind of invalidation from the main path.
 @inline function Broadcast.materialize(bc::Broadcast.Broadcasted{<:RaggedVectorOfArrayStyle})
     return copy(bc)
 end

lib/RecursiveArrayToolsShorthandConstructors/Project.toml

@@ -6,7 +6,7 @@ version = "1.0.0"
 RecursiveArrayTools = "731186ca-8d62-57ce-b412-fbd966d074cd"
 
 [compat]
-RecursiveArrayTools = "3.48"
+RecursiveArrayTools = "4"
 julia = "1.10"
 
 [extras]