diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index d6112a8..be3bb3e 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -18,10 +18,22 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        # Only the root umbrella package's own test groups are listed here.
+        # The lib/* sublibraries are covered by SublibraryCI.yml (project model);
+        # they are intentionally not re-tested through the root matrix.
+        group:
+          - Core
+          - QA
         version:
-          - "1"
           - "lts"
+          - "1"
+          - "pre"
+        exclude:
+          # QA (explicit-imports check) does not need the pre-release Julia.
+          - group: QA
+            version: "pre"
     uses: "SciML/.github/.github/workflows/tests.yml@v1"
     with:
       julia-version: "${{ matrix.version }}"
+      group: "${{ matrix.group }}"
     secrets: "inherit"
diff --git a/.github/workflows/Downgrade.yml b/.github/workflows/Downgrade.yml
index 743ef8f..36d3b21 100644
--- a/.github/workflows/Downgrade.yml
+++ b/.github/workflows/Downgrade.yml
@@ -10,14 +10,13 @@ on:
       - master
     paths-ignore:
       - 'docs/**'
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
 jobs:
   downgrade:
     name: "Downgrade"
-    strategy:
-      matrix:
-        julia-version: ['1.10']
     uses: "SciML/.github/.github/workflows/downgrade.yml@v1"
     with:
-      julia-version: "${{ matrix.julia-version }}"
-      skip: "Pkg,TOML"
+      group: "Core"
     secrets: "inherit"
diff --git a/.github/workflows/DowngradeSublibraries.yml b/.github/workflows/DowngradeSublibraries.yml
index 590a0e2..8cf4dab 100644
--- a/.github/workflows/DowngradeSublibraries.yml
+++ b/.github/workflows/DowngradeSublibraries.yml
@@ -18,5 +18,6 @@ jobs:
     uses: "SciML/.github/.github/workflows/sublibrary-downgrade.yml@v1"
     secrets: "inherit"
     with:
-      julia-version: "lts"
-      skip: "Pkg,TOML,Statistics,LinearAlgebra,SparseArrays,InteractiveUtils,Random,Test,Markdown"
+      group-env-name: "DIFFEQPROBLEMLIBRARY_TEST_GROUP"
+      group-env-value: "Core"
+      # Every lib/* sublibrary is downgrade-tested (projects auto-discovered, no exclusions).
diff --git a/.github/workflows/Downstream.yml b/.github/workflows/Downstream.yml
new file mode 100644
index 0000000..b25a5ea
--- /dev/null
+++ b/.github/workflows/Downstream.yml
@@ -0,0 +1,53 @@
+name: IntegrationTest
+on:
+  push:
+    branches: [master]
+    tags: [v*]
+  pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+jobs:
+  test:
+    name: ${{ matrix.package.repo }}/${{ matrix.package.group }}/${{ matrix.julia-version }}
+    runs-on: ${{ matrix.os }}
+    env:
+      GROUP: ${{ matrix.package.group }}
+    strategy:
+      fail-fast: false
+      matrix:
+        julia-version: ['1.10']
+        os: [ubuntu-latest]
+        package:
+          - {user: SciML, repo: DiffEqDevTools.jl, group: All}
+          - {user: SciML, repo: OrdinaryDiffEq.jl, group: Regression_I}
+    steps:
+      - uses: actions/checkout@v6
+      - uses: julia-actions/setup-julia@v3
+        with:
+          version: ${{ matrix.julia-version }}
+          arch: x64
+      - name: Clone Downstream
+        uses: actions/checkout@v6
+        with:
+          repository: ${{ matrix.package.user }}/${{ matrix.package.repo }}
+          path: downstream
+      - name: Load this and run the downstream tests
+        shell: julia --color=yes --project=downstream {0}
+        run: |
+          using Pkg
+          try
+            Pkg.develop(map(path ->Pkg.PackageSpec.(;path="lib/$(path)"), readdir("./lib")));
+            Pkg.test(coverage=true)
+          catch err
+            err isa Pkg.Resolve.ResolverError || rethrow()
+            @info "Not compatible with this release. No problem." exception=err
+            exit(0)
+          end
+      - uses: julia-actions/julia-processcoverage@v1
+      - uses: codecov/codecov-action@v6
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: lcov.info
+          fail_ci_if_error: false
+          disable_safe_directory: true
diff --git a/.github/workflows/SublibraryCI.yml b/.github/workflows/SublibraryCI.yml
index 6cec66b..6e62171 100644
--- a/.github/workflows/SublibraryCI.yml
+++ b/.github/workflows/SublibraryCI.yml
@@ -19,4 +19,7 @@ concurrency:
 jobs:
   sublibraries:
     uses: "SciML/.github/.github/workflows/sublibrary-project-tests.yml@v1"
+    with:
+      group-env-name: DIFFEQPROBLEMLIBRARY_TEST_GROUP
+      check-bounds: auto
     secrets: "inherit"
diff --git a/.github/workflows/TagBot.yml b/.github/workflows/TagBot.yml
index f49313b..5b9ed11 100644
--- a/.github/workflows/TagBot.yml
+++ b/.github/workflows/TagBot.yml
@@ -1,15 +1,26 @@
-name: TagBot
+name: "TagBot"
 on:
   issue_comment:
-    types:
-      - created
+    types: [created]
   workflow_dispatch:
 jobs:
-  TagBot:
-    if: github.event_name == 'workflow_dispatch' || github.actor == 'JuliaTagBot'
-    runs-on: ubuntu-latest
-    steps:
-      - uses: JuliaRegistries/TagBot@v1
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          ssh: ${{ secrets.DOCUMENTER_KEY }}
+  tagbot:
+    uses: "SciML/.github/.github/workflows/tagbot.yml@v1"
+    secrets: "inherit"
+
+  tagbot-subpackages:
+    strategy:
+      fail-fast: false
+      matrix:
+        subdir:
+          - "lib/BVProblemLibrary"
+          - "lib/DAEProblemLibrary"
+          - "lib/DDEProblemLibrary"
+          - "lib/JumpProblemLibrary"
+          - "lib/NonlinearProblemLibrary"
+          - "lib/ODEProblemLibrary"
+          - "lib/SDEProblemLibrary"
+    uses: "SciML/.github/.github/workflows/tagbot.yml@v1"
+    with:
+      subdir: "${{ matrix.subdir }}"
+    secrets: "inherit"
diff --git a/Project.toml b/Project.toml
index 57756a0..84bf407 100644
--- a/Project.toml
+++ b/Project.toml
@@ -12,6 +12,15 @@ NonlinearProblemLibrary = "b7050fa9-e91f-4b37-bcee-a89a063da141"
 ODEProblemLibrary = "fdc4e326-1af4-4b90-96e7-779fcce2daa5"
 SDEProblemLibrary = "c72e72a9-a271-4b2b-8966-303ed956772e"
 
+[sources]
+BVProblemLibrary = {path = "lib/BVProblemLibrary"}
+DAEProblemLibrary = {path = "lib/DAEProblemLibrary"}
+DDEProblemLibrary = {path = "lib/DDEProblemLibrary"}
+JumpProblemLibrary = {path = "lib/JumpProblemLibrary"}
+NonlinearProblemLibrary = {path = "lib/NonlinearProblemLibrary"}
+ODEProblemLibrary = {path = "lib/ODEProblemLibrary"}
+SDEProblemLibrary = {path = "lib/SDEProblemLibrary"}
+
 [compat]
 BVProblemLibrary = "0.1"
 DAEProblemLibrary = "0.1"
@@ -19,12 +28,15 @@ DDEProblemLibrary = "0.1"
 JumpProblemLibrary = "1, 2.0"
 NonlinearProblemLibrary = "0.1"
 ODEProblemLibrary = "1"
+SafeTestsets = "0.1"
 SDEProblemLibrary = "1"
+Test = "1.10"
 julia = "1.10"
 
 [extras]
-ExplicitImports = "7d51a73a-1435-4ff3-83d9-f097790105c7"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["ExplicitImports", "Test"]
+test = ["Pkg", "SafeTestsets", "Test"]
diff --git a/lib/BVProblemLibrary/LICENSE b/lib/BVProblemLibrary/LICENSE.md
similarity index 100%
rename from lib/BVProblemLibrary/LICENSE
rename to lib/BVProblemLibrary/LICENSE.md
diff --git a/lib/BVProblemLibrary/Project.toml b/lib/BVProblemLibrary/Project.toml
index b685b91..c6718eb 100644
--- a/lib/BVProblemLibrary/Project.toml
+++ b/lib/BVProblemLibrary/Project.toml
@@ -8,14 +8,17 @@ Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
 SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
 
 [compat]
-Aqua = "0.8"
 DiffEqBase = "6, 7"
 Markdown = "1.10"
+SafeTestsets = "0.1"
 SpecialFunctions = "2.3"
+Test = "1.10"
 julia = "1.10"
 
 [extras]
-Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Aqua"]
+test = ["Pkg", "SafeTestsets", "Test"]
diff --git a/lib/BVProblemLibrary/README.md b/lib/BVProblemLibrary/README.md
new file mode 100644
index 0000000..cbe383b
--- /dev/null
+++ b/lib/BVProblemLibrary/README.md
@@ -0,0 +1,10 @@
+# BVProblemLibrary.jl
+
+[![Join the chat at https://julialang.zulipchat.com #sciml-bridged](https://img.shields.io/static/v1?label=Zulip&message=chat&color=9558b2&labelColor=389826)](https://julialang.zulipchat.com/#narrow/stream/279055-sciml-bridged)
+[![Global Docs](https://img.shields.io/badge/docs-SciML-blue.svg)](https://docs.sciml.ai/DiffEqDocs/stable/)
+
+[![ColPrac: Contributor's Guide on Collaborative Practices for Community Packages](https://img.shields.io/badge/ColPrac-Contributor%27s%20Guide-blueviolet)](https://github.com/SciML/ColPrac)
+[![SciML Code Style](https://img.shields.io/static/v1?label=code%20style&message=SciML&color=9558b2&labelColor=389826)](https://github.com/SciML/SciMLStyle)
+
+BVProblemLibrary.jl is a component of the [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl) monorepo. A library of premade boundary value problems (BVProblems) for testing and benchmarking boundary value differential equation solvers.
+While completely independent and usable on its own, users wanting the full set of premade differential equation problems should use [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl).
diff --git a/lib/BVProblemLibrary/test/qa/Project.toml b/lib/BVProblemLibrary/test/qa/Project.toml
new file mode 100644
index 0000000..3b6a6c9
--- /dev/null
+++ b/lib/BVProblemLibrary/test/qa/Project.toml
@@ -0,0 +1,13 @@
+[deps]
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+BVProblemLibrary = "ded0fc24-dfea-4565-b1d9-79c027d14d84"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[sources]
+BVProblemLibrary = {path = "../.."}
+
+[compat]
+Aqua = "0.8"
+BVProblemLibrary = "0.1"
+Test = "1.10"
+julia = "1.10"
diff --git a/lib/BVProblemLibrary/test/qa/qa.jl b/lib/BVProblemLibrary/test/qa/qa.jl
new file mode 100644
index 0000000..36a36a3
--- /dev/null
+++ b/lib/BVProblemLibrary/test/qa/qa.jl
@@ -0,0 +1,6 @@
+using BVProblemLibrary
+using Aqua
+
+@testset "Aqua" begin
+    Aqua.test_all(BVProblemLibrary; ambiguities = false)
+end
diff --git a/lib/BVProblemLibrary/test/runtests.jl b/lib/BVProblemLibrary/test/runtests.jl
index fabf5d5..0821ce9 100644
--- a/lib/BVProblemLibrary/test/runtests.jl
+++ b/lib/BVProblemLibrary/test/runtests.jl
@@ -1,8 +1,24 @@
-# The test is simply that all of the examples build!
+using Pkg
 using BVProblemLibrary
+using SafeTestsets, Test
 
-# Check that there are no undefined exports, stale dependencies, etc.
-# Ambiguity checks are disabled since tests fail due to ambiguities
-# in dependencies
-using Aqua
-Aqua.test_all(BVProblemLibrary; ambiguities = false)
+const TEST_GROUP = get(ENV, "DIFFEQPROBLEMLIBRARY_TEST_GROUP", "All")
+
+function activate_qa_env()
+    Pkg.activate(joinpath(@__DIR__, "qa"))
+    return Pkg.instantiate()
+end
+
+# The Core test is simply that all of the examples build (load the module).
+if TEST_GROUP == "Core" || TEST_GROUP == "All"
+    @time @testset "Load Tests" begin
+        @test BVProblemLibrary isa Module
+    end
+end
+
+# Quality assurance: no undefined exports, stale dependencies, etc.
+# Ambiguity checks are disabled since tests fail due to ambiguities in dependencies.
+if TEST_GROUP == "QA" || TEST_GROUP == "All"
+    activate_qa_env()
+    @time @safetestset "Aqua" include("qa/qa.jl")
+end
diff --git a/lib/BVProblemLibrary/test/test_groups.toml b/lib/BVProblemLibrary/test/test_groups.toml
new file mode 100644
index 0000000..1fe84cd
--- /dev/null
+++ b/lib/BVProblemLibrary/test/test_groups.toml
@@ -0,0 +1,5 @@
+[Core]
+versions = ["lts", "1", "pre"]
+
+[QA]
+versions = ["lts", "1"]
diff --git a/lib/DAEProblemLibrary/LICENSE b/lib/DAEProblemLibrary/LICENSE.md
similarity index 100%
rename from lib/DAEProblemLibrary/LICENSE
rename to lib/DAEProblemLibrary/LICENSE.md
diff --git a/lib/DAEProblemLibrary/Project.toml b/lib/DAEProblemLibrary/Project.toml
index 1fc77af..1492602 100644
--- a/lib/DAEProblemLibrary/Project.toml
+++ b/lib/DAEProblemLibrary/Project.toml
@@ -7,13 +7,16 @@ DiffEqBase = "2b5f629d-d688-5b77-993f-72d75c75574e"
 Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
 
 [compat]
-Aqua = "0.8"
 DiffEqBase = "6, 7"
 Markdown = "1.10"
+SafeTestsets = "0.1"
+Test = "1.10"
 julia = "1.10"
 
 [extras]
-Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Aqua"]
+test = ["Pkg", "SafeTestsets", "Test"]
diff --git a/lib/DAEProblemLibrary/README.md b/lib/DAEProblemLibrary/README.md
new file mode 100644
index 0000000..77a9b50
--- /dev/null
+++ b/lib/DAEProblemLibrary/README.md
@@ -0,0 +1,10 @@
+# DAEProblemLibrary.jl
+
+[![Join the chat at https://julialang.zulipchat.com #sciml-bridged](https://img.shields.io/static/v1?label=Zulip&message=chat&color=9558b2&labelColor=389826)](https://julialang.zulipchat.com/#narrow/stream/279055-sciml-bridged)
+[![Global Docs](https://img.shields.io/badge/docs-SciML-blue.svg)](https://docs.sciml.ai/DiffEqDocs/stable/)
+
+[![ColPrac: Contributor's Guide on Collaborative Practices for Community Packages](https://img.shields.io/badge/ColPrac-Contributor%27s%20Guide-blueviolet)](https://github.com/SciML/ColPrac)
+[![SciML Code Style](https://img.shields.io/static/v1?label=code%20style&message=SciML&color=9558b2&labelColor=389826)](https://github.com/SciML/SciMLStyle)
+
+DAEProblemLibrary.jl is a component of the [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl) monorepo. A library of premade differential-algebraic equation problems (DAEProblems) for testing and benchmarking DAE solvers.
+While completely independent and usable on its own, users wanting the full set of premade differential equation problems should use [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl).
diff --git a/lib/DAEProblemLibrary/test/qa/Project.toml b/lib/DAEProblemLibrary/test/qa/Project.toml
new file mode 100644
index 0000000..5883ba1
--- /dev/null
+++ b/lib/DAEProblemLibrary/test/qa/Project.toml
@@ -0,0 +1,13 @@
+[deps]
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+DAEProblemLibrary = "dfb8ca35-80a1-48ba-a605-84916a45b4f8"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[sources]
+DAEProblemLibrary = {path = "../.."}
+
+[compat]
+Aqua = "0.8"
+DAEProblemLibrary = "0.1"
+Test = "1.10"
+julia = "1.10"
diff --git a/lib/DAEProblemLibrary/test/qa/qa.jl b/lib/DAEProblemLibrary/test/qa/qa.jl
new file mode 100644
index 0000000..0bb41bc
--- /dev/null
+++ b/lib/DAEProblemLibrary/test/qa/qa.jl
@@ -0,0 +1,6 @@
+using DAEProblemLibrary
+using Aqua
+
+@testset "Aqua" begin
+    Aqua.test_all(DAEProblemLibrary; ambiguities = false)
+end
diff --git a/lib/DAEProblemLibrary/test/runtests.jl b/lib/DAEProblemLibrary/test/runtests.jl
index bc4d71f..0d470a9 100644
--- a/lib/DAEProblemLibrary/test/runtests.jl
+++ b/lib/DAEProblemLibrary/test/runtests.jl
@@ -1,8 +1,24 @@
-# The test is simply that all of the examples build!
+using Pkg
 using DAEProblemLibrary
+using SafeTestsets, Test
 
-# Check that there are no undefined exports, stale dependencies, etc.
-# Ambiguity checks are disabled since tests fail due to ambiguities
-# in dependencies
-using Aqua
-Aqua.test_all(DAEProblemLibrary; ambiguities = false)
+const TEST_GROUP = get(ENV, "DIFFEQPROBLEMLIBRARY_TEST_GROUP", "All")
+
+function activate_qa_env()
+    Pkg.activate(joinpath(@__DIR__, "qa"))
+    return Pkg.instantiate()
+end
+
+# The Core test is simply that all of the examples build (load the module).
+if TEST_GROUP == "Core" || TEST_GROUP == "All"
+    @time @testset "Load Tests" begin
+        @test DAEProblemLibrary isa Module
+    end
+end
+
+# Quality assurance: no undefined exports, stale dependencies, etc.
+# Ambiguity checks are disabled since tests fail due to ambiguities in dependencies.
+if TEST_GROUP == "QA" || TEST_GROUP == "All"
+    activate_qa_env()
+    @time @safetestset "Aqua" include("qa/qa.jl")
+end
diff --git a/lib/DAEProblemLibrary/test/test_groups.toml b/lib/DAEProblemLibrary/test/test_groups.toml
new file mode 100644
index 0000000..1fe84cd
--- /dev/null
+++ b/lib/DAEProblemLibrary/test/test_groups.toml
@@ -0,0 +1,5 @@
+[Core]
+versions = ["lts", "1", "pre"]
+
+[QA]
+versions = ["lts", "1"]
diff --git a/lib/DDEProblemLibrary/LICENSE b/lib/DDEProblemLibrary/LICENSE.md
similarity index 100%
rename from lib/DDEProblemLibrary/LICENSE
rename to lib/DDEProblemLibrary/LICENSE.md
diff --git a/lib/DDEProblemLibrary/Project.toml b/lib/DDEProblemLibrary/Project.toml
index 1a3cfcc..6621d19 100644
--- a/lib/DDEProblemLibrary/Project.toml
+++ b/lib/DDEProblemLibrary/Project.toml
@@ -6,12 +6,15 @@ version = "0.1.5"
 DiffEqBase = "2b5f629d-d688-5b77-993f-72d75c75574e"
 
 [compat]
-Aqua = "0.8"
 DiffEqBase = "6, 7"
+SafeTestsets = "0.1"
+Test = "1.10"
 julia = "1.10"
 
 [extras]
-Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Aqua"]
+test = ["Pkg", "SafeTestsets", "Test"]
diff --git a/lib/DDEProblemLibrary/README.md b/lib/DDEProblemLibrary/README.md
new file mode 100644
index 0000000..dd2d821
--- /dev/null
+++ b/lib/DDEProblemLibrary/README.md
@@ -0,0 +1,10 @@
+# DDEProblemLibrary.jl
+
+[![Join the chat at https://julialang.zulipchat.com #sciml-bridged](https://img.shields.io/static/v1?label=Zulip&message=chat&color=9558b2&labelColor=389826)](https://julialang.zulipchat.com/#narrow/stream/279055-sciml-bridged)
+[![Global Docs](https://img.shields.io/badge/docs-SciML-blue.svg)](https://docs.sciml.ai/DiffEqDocs/stable/)
+
+[![ColPrac: Contributor's Guide on Collaborative Practices for Community Packages](https://img.shields.io/badge/ColPrac-Contributor%27s%20Guide-blueviolet)](https://github.com/SciML/ColPrac)
+[![SciML Code Style](https://img.shields.io/static/v1?label=code%20style&message=SciML&color=9558b2&labelColor=389826)](https://github.com/SciML/SciMLStyle)
+
+DDEProblemLibrary.jl is a component of the [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl) monorepo. A library of premade delay differential equation problems (DDEProblems) for testing and benchmarking delay differential equation solvers.
+While completely independent and usable on its own, users wanting the full set of premade differential equation problems should use [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl).
diff --git a/lib/DDEProblemLibrary/test/qa/Project.toml b/lib/DDEProblemLibrary/test/qa/Project.toml
new file mode 100644
index 0000000..233d74a
--- /dev/null
+++ b/lib/DDEProblemLibrary/test/qa/Project.toml
@@ -0,0 +1,13 @@
+[deps]
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+DDEProblemLibrary = "f42792ee-6ffc-4e2a-ae83-8ee2f22de800"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[sources]
+DDEProblemLibrary = {path = "../.."}
+
+[compat]
+Aqua = "0.8"
+DDEProblemLibrary = "0.1"
+Test = "1.10"
+julia = "1.10"
diff --git a/lib/DDEProblemLibrary/test/qa/qa.jl b/lib/DDEProblemLibrary/test/qa/qa.jl
new file mode 100644
index 0000000..ce167c0
--- /dev/null
+++ b/lib/DDEProblemLibrary/test/qa/qa.jl
@@ -0,0 +1,6 @@
+using DDEProblemLibrary
+using Aqua
+
+@testset "Aqua" begin
+    Aqua.test_all(DDEProblemLibrary; ambiguities = false)
+end
diff --git a/lib/DDEProblemLibrary/test/runtests.jl b/lib/DDEProblemLibrary/test/runtests.jl
index 6b2280d..f69ce74 100644
--- a/lib/DDEProblemLibrary/test/runtests.jl
+++ b/lib/DDEProblemLibrary/test/runtests.jl
@@ -1,8 +1,24 @@
-# The main test is simply that all of the examples build!
+using Pkg
 using DDEProblemLibrary
+using SafeTestsets, Test
 
-# Check that there are no undefined exports, stale dependencies, etc.
-# Ambiguity checks are disabled since tests fail due to ambiguities
-# in dependencies
-using Aqua
-Aqua.test_all(DDEProblemLibrary; ambiguities = false)
+const TEST_GROUP = get(ENV, "DIFFEQPROBLEMLIBRARY_TEST_GROUP", "All")
+
+function activate_qa_env()
+    Pkg.activate(joinpath(@__DIR__, "qa"))
+    return Pkg.instantiate()
+end
+
+# The Core test is simply that all of the examples build (load the module).
+if TEST_GROUP == "Core" || TEST_GROUP == "All"
+    @time @testset "Load Tests" begin
+        @test DDEProblemLibrary isa Module
+    end
+end
+
+# Quality assurance: no undefined exports, stale dependencies, etc.
+# Ambiguity checks are disabled since tests fail due to ambiguities in dependencies.
+if TEST_GROUP == "QA" || TEST_GROUP == "All"
+    activate_qa_env()
+    @time @safetestset "Aqua" include("qa/qa.jl")
+end
diff --git a/lib/DDEProblemLibrary/test/test_groups.toml b/lib/DDEProblemLibrary/test/test_groups.toml
new file mode 100644
index 0000000..1fe84cd
--- /dev/null
+++ b/lib/DDEProblemLibrary/test/test_groups.toml
@@ -0,0 +1,5 @@
+[Core]
+versions = ["lts", "1", "pre"]
+
+[QA]
+versions = ["lts", "1"]
diff --git a/lib/JumpProblemLibrary/LICENSE b/lib/JumpProblemLibrary/LICENSE.md
similarity index 100%
rename from lib/JumpProblemLibrary/LICENSE
rename to lib/JumpProblemLibrary/LICENSE.md
diff --git a/lib/JumpProblemLibrary/Project.toml b/lib/JumpProblemLibrary/Project.toml
index 9c9e90a..f595ccd 100644
--- a/lib/JumpProblemLibrary/Project.toml
+++ b/lib/JumpProblemLibrary/Project.toml
@@ -7,13 +7,16 @@ Catalyst = "479239e8-5488-4da2-87a7-35f2df7eef83"
 RuntimeGeneratedFunctions = "7e49a35a-f44a-4d26-94aa-eba1b4ca6b47"
 
 [compat]
-Aqua = "0.8"
 Catalyst = "16"
 RuntimeGeneratedFunctions = "0.5"
+SafeTestsets = "0.1"
+Test = "1.10"
 julia = "1.10"
 
 [extras]
-Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Aqua"]
+test = ["Pkg", "SafeTestsets", "Test"]
diff --git a/lib/JumpProblemLibrary/README.md b/lib/JumpProblemLibrary/README.md
new file mode 100644
index 0000000..5e3f41d
--- /dev/null
+++ b/lib/JumpProblemLibrary/README.md
@@ -0,0 +1,10 @@
+# JumpProblemLibrary.jl
+
+[![Join the chat at https://julialang.zulipchat.com #sciml-bridged](https://img.shields.io/static/v1?label=Zulip&message=chat&color=9558b2&labelColor=389826)](https://julialang.zulipchat.com/#narrow/stream/279055-sciml-bridged)
+[![Global Docs](https://img.shields.io/badge/docs-SciML-blue.svg)](https://docs.sciml.ai/DiffEqDocs/stable/)
+
+[![ColPrac: Contributor's Guide on Collaborative Practices for Community Packages](https://img.shields.io/badge/ColPrac-Contributor%27s%20Guide-blueviolet)](https://github.com/SciML/ColPrac)
+[![SciML Code Style](https://img.shields.io/static/v1?label=code%20style&message=SciML&color=9558b2&labelColor=389826)](https://github.com/SciML/SciMLStyle)
+
+JumpProblemLibrary.jl is a component of the [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl) monorepo. A library of premade jump process / reaction network problems for testing and benchmarking jump and Gillespie solvers.
+While completely independent and usable on its own, users wanting the full set of premade differential equation problems should use [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl).
diff --git a/lib/JumpProblemLibrary/test/qa/Project.toml b/lib/JumpProblemLibrary/test/qa/Project.toml
new file mode 100644
index 0000000..4d15c00
--- /dev/null
+++ b/lib/JumpProblemLibrary/test/qa/Project.toml
@@ -0,0 +1,13 @@
+[deps]
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+JumpProblemLibrary = "faf0f6d7-8cee-47cb-b27c-1eb80cef534e"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[sources]
+JumpProblemLibrary = {path = "../.."}
+
+[compat]
+Aqua = "0.8"
+JumpProblemLibrary = "2"
+Test = "1.10"
+julia = "1.10"
diff --git a/lib/JumpProblemLibrary/test/qa/qa.jl b/lib/JumpProblemLibrary/test/qa/qa.jl
new file mode 100644
index 0000000..3d703ee
--- /dev/null
+++ b/lib/JumpProblemLibrary/test/qa/qa.jl
@@ -0,0 +1,6 @@
+using JumpProblemLibrary
+using Aqua
+
+@testset "Aqua" begin
+    Aqua.test_all(JumpProblemLibrary; ambiguities = false, persistent_tasks = false)
+end
diff --git a/lib/JumpProblemLibrary/test/runtests.jl b/lib/JumpProblemLibrary/test/runtests.jl
index 044e97a..9fbaaf7 100644
--- a/lib/JumpProblemLibrary/test/runtests.jl
+++ b/lib/JumpProblemLibrary/test/runtests.jl
@@ -1,8 +1,24 @@
-# The test is simply that all of the examples build!
+using Pkg
 using JumpProblemLibrary
+using SafeTestsets, Test
 
-# Check that there are no undefined exports, stale dependencies, etc.
-# Ambiguity checks are disabled since tests fail due to ambiguities
-# in dependencies
-using Aqua
-Aqua.test_all(JumpProblemLibrary; ambiguities = false, persistent_tasks = false)
+const TEST_GROUP = get(ENV, "DIFFEQPROBLEMLIBRARY_TEST_GROUP", "All")
+
+function activate_qa_env()
+    Pkg.activate(joinpath(@__DIR__, "qa"))
+    return Pkg.instantiate()
+end
+
+# The Core test is simply that all of the examples build (load the module).
+if TEST_GROUP == "Core" || TEST_GROUP == "All"
+    @time @testset "Load Tests" begin
+        @test JumpProblemLibrary isa Module
+    end
+end
+
+# Quality assurance: no undefined exports, stale dependencies, etc.
+# Ambiguity checks are disabled since tests fail due to ambiguities in dependencies.
+if TEST_GROUP == "QA" || TEST_GROUP == "All"
+    activate_qa_env()
+    @time @safetestset "Aqua" include("qa/qa.jl")
+end
diff --git a/lib/JumpProblemLibrary/test/test_groups.toml b/lib/JumpProblemLibrary/test/test_groups.toml
new file mode 100644
index 0000000..1fe84cd
--- /dev/null
+++ b/lib/JumpProblemLibrary/test/test_groups.toml
@@ -0,0 +1,5 @@
+[Core]
+versions = ["lts", "1", "pre"]
+
+[QA]
+versions = ["lts", "1"]
diff --git a/lib/NonlinearProblemLibrary/LICENSE b/lib/NonlinearProblemLibrary/LICENSE.md
similarity index 100%
rename from lib/NonlinearProblemLibrary/LICENSE
rename to lib/NonlinearProblemLibrary/LICENSE.md
diff --git a/lib/NonlinearProblemLibrary/Project.toml b/lib/NonlinearProblemLibrary/Project.toml
index 0689990..bc377fc 100644
--- a/lib/NonlinearProblemLibrary/Project.toml
+++ b/lib/NonlinearProblemLibrary/Project.toml
@@ -7,17 +7,16 @@ LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 
 [compat]
-AllocCheck = "0.2"
-Aqua = "0.8"
 LinearAlgebra = "1.6"
+SafeTestsets = "0.1"
 SciMLBase = "2, 3"
 Test = "1"
 julia = "1.10"
 
 [extras]
-AllocCheck = "9b6a8646-10ed-4001-bbdc-1d2f46dfbb1a"
-Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["AllocCheck", "Aqua", "Test"]
+test = ["Pkg", "SafeTestsets", "Test"]
diff --git a/lib/NonlinearProblemLibrary/README.md b/lib/NonlinearProblemLibrary/README.md
new file mode 100644
index 0000000..7b79f56
--- /dev/null
+++ b/lib/NonlinearProblemLibrary/README.md
@@ -0,0 +1,10 @@
+# NonlinearProblemLibrary.jl
+
+[![Join the chat at https://julialang.zulipchat.com #sciml-bridged](https://img.shields.io/static/v1?label=Zulip&message=chat&color=9558b2&labelColor=389826)](https://julialang.zulipchat.com/#narrow/stream/279055-sciml-bridged)
+[![Global Docs](https://img.shields.io/badge/docs-SciML-blue.svg)](https://docs.sciml.ai/DiffEqDocs/stable/)
+
+[![ColPrac: Contributor's Guide on Collaborative Practices for Community Packages](https://img.shields.io/badge/ColPrac-Contributor%27s%20Guide-blueviolet)](https://github.com/SciML/ColPrac)
+[![SciML Code Style](https://img.shields.io/static/v1?label=code%20style&message=SciML&color=9558b2&labelColor=389826)](https://github.com/SciML/SciMLStyle)
+
+NonlinearProblemLibrary.jl is a component of the [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl) monorepo. A library of premade nonlinear systems (NonlinearProblems) for testing and benchmarking nonlinear solvers.
+While completely independent and usable on its own, users wanting the full set of premade differential equation problems should use [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl).
diff --git a/lib/NonlinearProblemLibrary/test/qa/Project.toml b/lib/NonlinearProblemLibrary/test/qa/Project.toml
new file mode 100644
index 0000000..5ee5061
--- /dev/null
+++ b/lib/NonlinearProblemLibrary/test/qa/Project.toml
@@ -0,0 +1,15 @@
+[deps]
+AllocCheck = "9b6a8646-10ed-4001-bbdc-1d2f46dfbb1a"
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+NonlinearProblemLibrary = "b7050fa9-e91f-4b37-bcee-a89a063da141"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[sources]
+NonlinearProblemLibrary = {path = "../.."}
+
+[compat]
+AllocCheck = "0.2"
+Aqua = "0.8"
+NonlinearProblemLibrary = "0.1"
+Test = "1"
+julia = "1.10"
diff --git a/lib/NonlinearProblemLibrary/test/qa/allocation_tests.jl b/lib/NonlinearProblemLibrary/test/qa/allocation_tests.jl
new file mode 100644
index 0000000..8b27dbf
--- /dev/null
+++ b/lib/NonlinearProblemLibrary/test/qa/allocation_tests.jl
@@ -0,0 +1,34 @@
+using NonlinearProblemLibrary
+using AllocCheck
+using Test
+
+@testset "Allocation Tests" begin
+    # Test p23_f! (Chandrasekhar function) - the fixed function
+    @testset "p23_f! zero allocations" begin
+        x = ones(10)
+        out = zeros(10)
+        # Warmup
+        NonlinearProblemLibrary.p23_f!(out, x)
+        # Test
+        allocs = @allocated NonlinearProblemLibrary.p23_f!(out, x)
+        @test allocs == 0
+    end
+
+    # Test other key functions
+    @testset "p1_f! zero allocations" begin
+        x = ones(10)
+        x[1] = -1.2
+        out = zeros(10)
+        NonlinearProblemLibrary.p1_f!(out, x)
+        allocs = @allocated NonlinearProblemLibrary.p1_f!(out, x)
+        @test allocs == 0
+    end
+
+    @testset "p2_f! zero allocations" begin
+        x = [3.0, -1.0, 0.0, 1.0]
+        out = zeros(4)
+        NonlinearProblemLibrary.p2_f!(out, x)
+        allocs = @allocated NonlinearProblemLibrary.p2_f!(out, x)
+        @test allocs == 0
+    end
+end
diff --git a/lib/NonlinearProblemLibrary/test/qa/qa.jl b/lib/NonlinearProblemLibrary/test/qa/qa.jl
new file mode 100644
index 0000000..5274826
--- /dev/null
+++ b/lib/NonlinearProblemLibrary/test/qa/qa.jl
@@ -0,0 +1,6 @@
+using NonlinearProblemLibrary
+using Aqua
+
+@testset "Aqua" begin
+    Aqua.test_all(NonlinearProblemLibrary; ambiguities = false)
+end
diff --git a/lib/NonlinearProblemLibrary/test/runtests.jl b/lib/NonlinearProblemLibrary/test/runtests.jl
index 9fe5dbc..e58a5c2 100644
--- a/lib/NonlinearProblemLibrary/test/runtests.jl
+++ b/lib/NonlinearProblemLibrary/test/runtests.jl
@@ -1,45 +1,26 @@
-# The test is simply that all of the examples build!
+using Pkg
 using NonlinearProblemLibrary
-using Test
+using SafeTestsets, Test
 
-# Check that there are no undefined exports, stale dependencies, etc.
-# Ambiguity checks are disabled since tests fail due to ambiguities
-# in dependencies
-using Aqua
-Aqua.test_all(NonlinearProblemLibrary; ambiguities = false)
+const TEST_GROUP = get(ENV, "DIFFEQPROBLEMLIBRARY_TEST_GROUP", "All")
 
-# Allocation tests - ensure key functions don't allocate
-if get(ENV, "GROUP", "all") == "all" || get(ENV, "GROUP", "all") == "nopre"
-    @testset "Allocation Tests" begin
-        using AllocCheck
-
-        # Test p23_f! (Chandrasekhar function) - the fixed function
-        @testset "p23_f! zero allocations" begin
-            x = ones(10)
-            out = zeros(10)
-            # Warmup
-            NonlinearProblemLibrary.p23_f!(out, x)
-            # Test
-            allocs = @allocated NonlinearProblemLibrary.p23_f!(out, x)
-            @test allocs == 0
-        end
-
-        # Test other key functions
-        @testset "p1_f! zero allocations" begin
-            x = ones(10)
-            x[1] = -1.2
-            out = zeros(10)
-            NonlinearProblemLibrary.p1_f!(out, x)
-            allocs = @allocated NonlinearProblemLibrary.p1_f!(out, x)
-            @test allocs == 0
-        end
+function activate_qa_env()
+    Pkg.activate(joinpath(@__DIR__, "qa"))
+    return Pkg.instantiate()
+end
 
-        @testset "p2_f! zero allocations" begin
-            x = [3.0, -1.0, 0.0, 1.0]
-            out = zeros(4)
-            NonlinearProblemLibrary.p2_f!(out, x)
-            allocs = @allocated NonlinearProblemLibrary.p2_f!(out, x)
-            @test allocs == 0
-        end
+if TEST_GROUP == "Core" || TEST_GROUP == "All"
+    @time @testset "Load Tests" begin
+        @test NonlinearProblemLibrary isa Module
     end
 end
+
+# Quality assurance: allocation checks (AllocCheck), then no undefined exports,
+# stale dependencies, etc. (Aqua). These run in the isolated test/qa environment
+# so the heavy tooling stays out of the main test env. Ambiguity checks are
+# disabled since tests fail due to ambiguities in dependencies.
+if TEST_GROUP == "QA" || TEST_GROUP == "All"
+    activate_qa_env()
+    @time @safetestset "Allocation Tests" include("qa/allocation_tests.jl")
+    @time @safetestset "Aqua" include("qa/qa.jl")
+end
diff --git a/lib/NonlinearProblemLibrary/test/test_groups.toml b/lib/NonlinearProblemLibrary/test/test_groups.toml
new file mode 100644
index 0000000..1fe84cd
--- /dev/null
+++ b/lib/NonlinearProblemLibrary/test/test_groups.toml
@@ -0,0 +1,5 @@
+[Core]
+versions = ["lts", "1", "pre"]
+
+[QA]
+versions = ["lts", "1"]
diff --git a/lib/ODEProblemLibrary/LICENSE b/lib/ODEProblemLibrary/LICENSE.md
similarity index 100%
rename from lib/ODEProblemLibrary/LICENSE
rename to lib/ODEProblemLibrary/LICENSE.md
diff --git a/lib/ODEProblemLibrary/Project.toml b/lib/ODEProblemLibrary/Project.toml
index 452f0b5..7d70379 100644
--- a/lib/ODEProblemLibrary/Project.toml
+++ b/lib/ODEProblemLibrary/Project.toml
@@ -9,15 +9,18 @@ Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 
 [compat]
-Aqua = "0.8"
 DiffEqBase = "6, 7"
 LinearAlgebra = "1.10"
 Markdown = "1.10"
 Random = "1.10"
+SafeTestsets = "0.1"
+Test = "1.10"
 julia = "1.10"
 
 [extras]
-Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Aqua"]
+test = ["Pkg", "SafeTestsets", "Test"]
diff --git a/lib/ODEProblemLibrary/README.md b/lib/ODEProblemLibrary/README.md
new file mode 100644
index 0000000..69c4aa1
--- /dev/null
+++ b/lib/ODEProblemLibrary/README.md
@@ -0,0 +1,10 @@
+# ODEProblemLibrary.jl
+
+[![Join the chat at https://julialang.zulipchat.com #sciml-bridged](https://img.shields.io/static/v1?label=Zulip&message=chat&color=9558b2&labelColor=389826)](https://julialang.zulipchat.com/#narrow/stream/279055-sciml-bridged)
+[![Global Docs](https://img.shields.io/badge/docs-SciML-blue.svg)](https://docs.sciml.ai/DiffEqDocs/stable/)
+
+[![ColPrac: Contributor's Guide on Collaborative Practices for Community Packages](https://img.shields.io/badge/ColPrac-Contributor%27s%20Guide-blueviolet)](https://github.com/SciML/ColPrac)
+[![SciML Code Style](https://img.shields.io/static/v1?label=code%20style&message=SciML&color=9558b2&labelColor=389826)](https://github.com/SciML/SciMLStyle)
+
+ODEProblemLibrary.jl is a component of the [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl) monorepo. A library of premade ordinary differential equation problems (ODEProblems) for testing and benchmarking ODE solvers.
+While completely independent and usable on its own, users wanting the full set of premade differential equation problems should use [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl).
diff --git a/lib/ODEProblemLibrary/test/qa/Project.toml b/lib/ODEProblemLibrary/test/qa/Project.toml
new file mode 100644
index 0000000..d52ff29
--- /dev/null
+++ b/lib/ODEProblemLibrary/test/qa/Project.toml
@@ -0,0 +1,13 @@
+[deps]
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+ODEProblemLibrary = "fdc4e326-1af4-4b90-96e7-779fcce2daa5"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[sources]
+ODEProblemLibrary = {path = "../.."}
+
+[compat]
+Aqua = "0.8"
+ODEProblemLibrary = "1"
+Test = "1.10"
+julia = "1.10"
diff --git a/lib/ODEProblemLibrary/test/qa/qa.jl b/lib/ODEProblemLibrary/test/qa/qa.jl
new file mode 100644
index 0000000..cdfb145
--- /dev/null
+++ b/lib/ODEProblemLibrary/test/qa/qa.jl
@@ -0,0 +1,6 @@
+using ODEProblemLibrary
+using Aqua
+
+@testset "Aqua" begin
+    Aqua.test_all(ODEProblemLibrary; ambiguities = false)
+end
diff --git a/lib/ODEProblemLibrary/test/runtests.jl b/lib/ODEProblemLibrary/test/runtests.jl
index 9d7d4e9..ce074ef 100644
--- a/lib/ODEProblemLibrary/test/runtests.jl
+++ b/lib/ODEProblemLibrary/test/runtests.jl
@@ -1,8 +1,24 @@
-# The test is simply that all of the examples build!
+using Pkg
 using ODEProblemLibrary
+using SafeTestsets, Test
 
-# Check that there are no undefined exports, stale dependencies, etc.
-# Ambiguity checks are disabled since tests fail due to ambiguities
-# in dependencies
-using Aqua
-Aqua.test_all(ODEProblemLibrary; ambiguities = false)
+const TEST_GROUP = get(ENV, "DIFFEQPROBLEMLIBRARY_TEST_GROUP", "All")
+
+function activate_qa_env()
+    Pkg.activate(joinpath(@__DIR__, "qa"))
+    return Pkg.instantiate()
+end
+
+# The Core test is simply that all of the examples build (load the module).
+if TEST_GROUP == "Core" || TEST_GROUP == "All"
+    @time @testset "Load Tests" begin
+        @test ODEProblemLibrary isa Module
+    end
+end
+
+# Quality assurance: no undefined exports, stale dependencies, etc.
+# Ambiguity checks are disabled since tests fail due to ambiguities in dependencies.
+if TEST_GROUP == "QA" || TEST_GROUP == "All"
+    activate_qa_env()
+    @time @safetestset "Aqua" include("qa/qa.jl")
+end
diff --git a/lib/ODEProblemLibrary/test/test_groups.toml b/lib/ODEProblemLibrary/test/test_groups.toml
new file mode 100644
index 0000000..1fe84cd
--- /dev/null
+++ b/lib/ODEProblemLibrary/test/test_groups.toml
@@ -0,0 +1,5 @@
+[Core]
+versions = ["lts", "1", "pre"]
+
+[QA]
+versions = ["lts", "1"]
diff --git a/lib/SDEProblemLibrary/LICENSE b/lib/SDEProblemLibrary/LICENSE.md
similarity index 100%
rename from lib/SDEProblemLibrary/LICENSE
rename to lib/SDEProblemLibrary/LICENSE.md
diff --git a/lib/SDEProblemLibrary/Project.toml b/lib/SDEProblemLibrary/Project.toml
index 24fb8c6..61614d8 100644
--- a/lib/SDEProblemLibrary/Project.toml
+++ b/lib/SDEProblemLibrary/Project.toml
@@ -9,15 +9,18 @@ RuntimeGeneratedFunctions = "7e49a35a-f44a-4d26-94aa-eba1b4ca6b47"
 SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 
 [compat]
-Aqua = "0.8"
 DiffEqBase = "6, 7"
 Markdown = "1.10"
 RuntimeGeneratedFunctions = "0.5"
+SafeTestsets = "0.1"
 SciMLBase = "2.0.1, 3"
+Test = "1.10"
 julia = "1.10"
 
 [extras]
-Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Aqua"]
+test = ["Pkg", "SafeTestsets", "Test"]
diff --git a/lib/SDEProblemLibrary/README.md b/lib/SDEProblemLibrary/README.md
new file mode 100644
index 0000000..28f6cbd
--- /dev/null
+++ b/lib/SDEProblemLibrary/README.md
@@ -0,0 +1,10 @@
+# SDEProblemLibrary.jl
+
+[![Join the chat at https://julialang.zulipchat.com #sciml-bridged](https://img.shields.io/static/v1?label=Zulip&message=chat&color=9558b2&labelColor=389826)](https://julialang.zulipchat.com/#narrow/stream/279055-sciml-bridged)
+[![Global Docs](https://img.shields.io/badge/docs-SciML-blue.svg)](https://docs.sciml.ai/DiffEqDocs/stable/)
+
+[![ColPrac: Contributor's Guide on Collaborative Practices for Community Packages](https://img.shields.io/badge/ColPrac-Contributor%27s%20Guide-blueviolet)](https://github.com/SciML/ColPrac)
+[![SciML Code Style](https://img.shields.io/static/v1?label=code%20style&message=SciML&color=9558b2&labelColor=389826)](https://github.com/SciML/SciMLStyle)
+
+SDEProblemLibrary.jl is a component of the [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl) monorepo. A library of premade stochastic differential equation problems (SDEProblems) for testing and benchmarking SDE solvers.
+While completely independent and usable on its own, users wanting the full set of premade differential equation problems should use [DiffEqProblemLibrary.jl](https://github.com/SciML/DiffEqProblemLibrary.jl).
diff --git a/lib/SDEProblemLibrary/test/qa/Project.toml b/lib/SDEProblemLibrary/test/qa/Project.toml
new file mode 100644
index 0000000..2cdb197
--- /dev/null
+++ b/lib/SDEProblemLibrary/test/qa/Project.toml
@@ -0,0 +1,13 @@
+[deps]
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+SDEProblemLibrary = "c72e72a9-a271-4b2b-8966-303ed956772e"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[sources]
+SDEProblemLibrary = {path = "../.."}
+
+[compat]
+Aqua = "0.8"
+SDEProblemLibrary = "1"
+Test = "1.10"
+julia = "1.10"
diff --git a/lib/SDEProblemLibrary/test/qa/qa.jl b/lib/SDEProblemLibrary/test/qa/qa.jl
new file mode 100644
index 0000000..faf5dfb
--- /dev/null
+++ b/lib/SDEProblemLibrary/test/qa/qa.jl
@@ -0,0 +1,6 @@
+using SDEProblemLibrary
+using Aqua
+
+@testset "Aqua" begin
+    Aqua.test_all(SDEProblemLibrary; ambiguities = false, persistent_tasks = false)
+end
diff --git a/lib/SDEProblemLibrary/test/runtests.jl b/lib/SDEProblemLibrary/test/runtests.jl
index ac537bf..6a700a2 100644
--- a/lib/SDEProblemLibrary/test/runtests.jl
+++ b/lib/SDEProblemLibrary/test/runtests.jl
@@ -1,8 +1,24 @@
-# The test is simply that all of the examples build!
+using Pkg
 using SDEProblemLibrary
+using SafeTestsets, Test
 
-# Check that there are no undefined exports, stale dependencies, etc.
-# Ambiguity checks are disabled since tests fail due to ambiguities
-# in dependencies
-using Aqua
-Aqua.test_all(SDEProblemLibrary; ambiguities = false, persistent_tasks = false)
+const TEST_GROUP = get(ENV, "DIFFEQPROBLEMLIBRARY_TEST_GROUP", "All")
+
+function activate_qa_env()
+    Pkg.activate(joinpath(@__DIR__, "qa"))
+    return Pkg.instantiate()
+end
+
+# The Core test is simply that all of the examples build (load the module).
+if TEST_GROUP == "Core" || TEST_GROUP == "All"
+    @time @testset "Load Tests" begin
+        @test SDEProblemLibrary isa Module
+    end
+end
+
+# Quality assurance: no undefined exports, stale dependencies, etc.
+# Ambiguity checks are disabled since tests fail due to ambiguities in dependencies.
+if TEST_GROUP == "QA" || TEST_GROUP == "All"
+    activate_qa_env()
+    @time @safetestset "Aqua" include("qa/qa.jl")
+end
diff --git a/lib/SDEProblemLibrary/test/test_groups.toml b/lib/SDEProblemLibrary/test/test_groups.toml
new file mode 100644
index 0000000..1fe84cd
--- /dev/null
+++ b/lib/SDEProblemLibrary/test/test_groups.toml
@@ -0,0 +1,5 @@
+[Core]
+versions = ["lts", "1", "pre"]
+
+[QA]
+versions = ["lts", "1"]
diff --git a/test/qa/Project.toml b/test/qa/Project.toml
new file mode 100644
index 0000000..afaeb56
--- /dev/null
+++ b/test/qa/Project.toml
@@ -0,0 +1,20 @@
+[deps]
+DiffEqProblemLibrary = "a077e3f3-b75c-5d7f-a0c6-6bc4c8ec64a9"
+ExplicitImports = "7d51a73a-1435-4ff3-83d9-f097790105c7"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[sources]
+BVProblemLibrary = {path = "../../lib/BVProblemLibrary"}
+DAEProblemLibrary = {path = "../../lib/DAEProblemLibrary"}
+DDEProblemLibrary = {path = "../../lib/DDEProblemLibrary"}
+DiffEqProblemLibrary = {path = "../.."}
+JumpProblemLibrary = {path = "../../lib/JumpProblemLibrary"}
+NonlinearProblemLibrary = {path = "../../lib/NonlinearProblemLibrary"}
+ODEProblemLibrary = {path = "../../lib/ODEProblemLibrary"}
+SDEProblemLibrary = {path = "../../lib/SDEProblemLibrary"}
+
+[compat]
+DiffEqProblemLibrary = "5"
+ExplicitImports = "1"
+Test = "1.10"
+julia = "1.10"
diff --git a/test/qa/qa.jl b/test/qa/qa.jl
new file mode 100644
index 0000000..8c77d8f
--- /dev/null
+++ b/test/qa/qa.jl
@@ -0,0 +1,11 @@
+# The root umbrella package's own test: it re-exports each sublibrary,
+# so the test is that the whole thing builds with no implicit or stale
+# explicit imports.
+using DiffEqProblemLibrary
+using ExplicitImports
+using Test
+
+@testset "ExplicitImports" begin
+    @test check_no_implicit_imports(DiffEqProblemLibrary) === nothing
+    @test check_no_stale_explicit_imports(DiffEqProblemLibrary) === nothing
+end
diff --git a/test/runtests.jl b/test/runtests.jl
index fa0a720..ceb763e 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,9 +1,72 @@
-# The test is simply that all of the examples build!
-using DiffEqProblemLibrary
-using ExplicitImports
-using Test
-
-@testset "ExplicitImports" begin
-    @test check_no_implicit_imports(DiffEqProblemLibrary) === nothing
-    @test check_no_stale_explicit_imports(DiffEqProblemLibrary) === nothing
+using Pkg
+using SafeTestsets, Test
+
+const GROUP = get(ENV, "GROUP", "All")
+
+function activate_qa_env()
+    Pkg.activate(joinpath(@__DIR__, "qa"))
+    return Pkg.instantiate()
 end
+
+@time begin
+    # Detect sublibrary test groups.
+    # GROUP can be a bare sublibrary name (Core test group) or
+    # "{sublibrary}_{TEST_GROUP}" for any custom group (e.g., QA).
+    # Sublibraries declare their groups in test/test_groups.toml (when they
+    # differ from the default Core + QA).
+    lib_dir = joinpath(dirname(@__DIR__), "lib")
+
+    # Scan underscores right-to-left to find the longest matching sublibrary prefix.
+    function _detect_sublibrary_group(group, lib_dir)
+        isdir(joinpath(lib_dir, group)) && return (group, "Core")
+        for i in length(group):-1:1
+            if group[i] == '_' && isdir(joinpath(lib_dir, group[1:(i - 1)]))
+                return (group[1:(i - 1)], group[(i + 1):end])
+            end
+        end
+        return (group, "Core")
+    end
+    base_group, test_group = _detect_sublibrary_group(GROUP, lib_dir)
+
+    if isdir(joinpath(lib_dir, base_group))
+        Pkg.activate(joinpath(lib_dir, base_group))
+        # On Julia < 1.11, the [sources] section in Project.toml is not supported.
+        # Manually Pkg.develop local path dependencies so CI tests the PR branch code.
+        # The transitive walk also develops each developed dependency's own [sources].
+        if VERSION < v"1.11.0-DEV.0"
+            developed = Set{String}()
+            push!(developed, normpath(joinpath(lib_dir, base_group)))
+            specs = Pkg.PackageSpec[]
+            queue = [joinpath(lib_dir, base_group)]
+            while !isempty(queue)
+                pkg_dir = popfirst!(queue)
+                toml_path = joinpath(pkg_dir, "Project.toml")
+                isfile(toml_path) || continue
+                toml = Pkg.TOML.parsefile(toml_path)
+                if haskey(toml, "sources")
+                    for (dep_name, source_spec) in toml["sources"]
+                        if source_spec isa Dict && haskey(source_spec, "path")
+                            dep_path = normpath(joinpath(pkg_dir, source_spec["path"]))
+                            if isdir(dep_path) && !(dep_path in developed)
+                                push!(developed, dep_path)
+                                @info "Queuing local source dependency" dep_name dep_path
+                                push!(specs, Pkg.PackageSpec(path = dep_path))
+                                push!(queue, dep_path)
+                            end
+                        end
+                    end
+                end
+            end
+            isempty(specs) || Pkg.develop(specs)
+        end
+        withenv("DIFFEQPROBLEMLIBRARY_TEST_GROUP" => test_group) do
+            Pkg.test(base_group, julia_args = ["--check-bounds=auto", "--compiled-modules=yes", "--depwarn=yes"], force_latest_compatible_version = false, allow_reresolve = true)
+        end
+    elseif GROUP == "All" || GROUP == "Core" || GROUP == "QA"
+        # The root umbrella package's own test: it re-exports each sublibrary,
+        # so the test is that the whole thing builds with no implicit or stale
+        # explicit imports.
+        activate_qa_env()
+        @time @safetestset "ExplicitImports" include("qa/qa.jl")
+    end
+end # @time