diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3c64f97c8..4653651f2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,6 +1,7 @@
+---
 name: CI
 
-on:
+'on':
   pull_request:
     branches:
       - "**"
@@ -20,10 +21,12 @@ jobs:
           elixir-version: 1.15.x
       - name: Retrieve dependencies cache
         uses: actions/cache@v3
-        id: mix-cache # id to use in retrieve action
+        id: mix-cache  # id to use in retrieve action
         with:
           path: deps
-          key: v1-${{ matrix.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+          key: >-
+            v1-${{ matrix.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{
+            hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
       - name: Install Dependencies
         run: mix deps.get 1>/dev/null
       - name: Check format
@@ -35,6 +38,9 @@ jobs:
       matrix:
         otp: [24.x, 25.x, 26.1.x]
         elixir: [1.15.x]
+        include:
+          - otp: 28.x
+            elixir: 1.19.x
 
     needs: check_format
     steps:
@@ -45,10 +51,12 @@ jobs:
           elixir-version: ${{matrix.elixir}}
       - name: Retrieve dependencies cache
         uses: actions/cache@v3
-        id: mix-cache # id to use in retrieve action
+        id: mix-cache  # id to use in retrieve action
         with:
           path: deps
-          key: v1-${{ matrix.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+          key: >-
+            v1-${{ matrix.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{
+            hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
       - name: Install Dependencies
         run: mix setup 1>/dev/null
       - name: Run Tests
@@ -66,10 +74,12 @@ jobs:
           elixir-version: 1.15.x
       - name: Retrieve dependencies cache
         uses: actions/cache@v3
-        id: mix-cache # id to use in retrieve action
+        id: mix-cache  # id to use in retrieve action
         with:
           path: deps
-          key: v1-${{ matrix.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+          key: >-
+            v1-${{ matrix.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{
+            hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
       - name: Install Dependencies
         run: mix deps.get 1>/dev/null
         working-directory: ./interop
@@ -86,6 +96,9 @@ jobs:
       matrix:
         otp: [24.x, 25.x, 26.1.x]
         elixir: [1.15.x]
+        include:
+          - otp: 28.x
+            elixir: 1.19.x
 
     steps:
       - uses: actions/checkout@v3
@@ -95,13 +108,15 @@ jobs:
           elixir-version: ${{ matrix.elixir }}
       - name: Retrieve dependencies cache
         uses: actions/cache@v3
-        id: mix-cache # id to use in retrieve action
+        id: mix-cache  # id to use in retrieve action
         with:
           path: deps
-          key: v1-${{ matrix.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+          key: >-
+            v1-${{ matrix.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{
+            hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
       - name: Install Dependencies
         run: mix deps.get 1>/dev/null
         working-directory: ./interop
       - name: Run interop tests
         run: mix run script/run.exs
-        working-directory: ./interop
\ No newline at end of file
+        working-directory: ./interop
diff --git a/grpc_client/CHANGELOG.md b/grpc_client/CHANGELOG.md
index 2bf2b0307..5902cd70d 100644
--- a/grpc_client/CHANGELOG.md
+++ b/grpc_client/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## v1.0.0-rc.1 (2025-12-02)
+
+### Enhancements
+
+  * Major restructuring: separated into distinct grpc_core, grpc_server, and grpc_client packages
+  * Refactor GRPC client setup - start supervisor in application (#483)
+
+### Bug fixes
+
+  * Fix Connection state created by build_direct_state (#480)
+
 ## v0.11.5 (2025-11-14)
 
 ### Enhancements
diff --git a/grpc_client/lib/grpc/client/connection.ex b/grpc_client/lib/grpc/client/connection.ex
index 87d573a0e..98af91d97 100644
--- a/grpc_client/lib/grpc/client/connection.ex
+++ b/grpc_client/lib/grpc/client/connection.ex
@@ -373,7 +373,14 @@ defmodule GRPC.Client.Connection do
     |> Enum.uniq()
   end
 
-  defp build_balanced_state(base_state, addresses, config, lb_policy_opt, norm_opts, adapter) do
+  defp build_balanced_state(
+         %__MODULE__{} = base_state,
+         addresses,
+         config,
+         lb_policy_opt,
+         norm_opts,
+         adapter
+       ) do
     lb_policy =
       cond do
         is_map(config) and Map.has_key?(config, :load_balancing_policy) ->
@@ -415,7 +422,7 @@ defmodule GRPC.Client.Connection do
     end
   end
 
-  defp build_direct_state(base_state, norm_target, norm_opts, adapter) do
+  defp build_direct_state(%__MODULE__{} = base_state, norm_target, norm_opts, adapter) do
     {host, port} = split_host_port(norm_target)
     vc = base_state.virtual_channel
 
@@ -433,7 +440,7 @@ defmodule GRPC.Client.Connection do
     end
   end
 
-  defp build_real_channels(addresses, virtual_channel, norm_opts, adapter) do
+  defp build_real_channels(addresses, %Channel{} = virtual_channel, norm_opts, adapter) do
     Map.new(addresses, fn %{port: port, address: host} ->
       case connect_real_channel(
              %Channel{virtual_channel | host: host, port: port},
@@ -501,7 +508,7 @@ defmodule GRPC.Client.Connection do
     |> adapter.connect(opts[:adapter_opts])
   end
 
-  defp connect_real_channel(vc, host, port, opts, adapter) do
+  defp connect_real_channel(%Channel{} = vc, host, port, opts, adapter) do
     %Channel{vc | host: host, port: port}
     |> adapter.connect(opts[:adapter_opts])
   end
diff --git a/grpc_client/test/grpc/integration/erlpack_notypes.ex b/grpc_client/test/grpc/integration/erlpack_notypes_test.exs
similarity index 100%
rename from grpc_client/test/grpc/integration/erlpack_notypes.ex
rename to grpc_client/test/grpc/integration/erlpack_notypes_test.exs
diff --git a/grpc_server/CHANGELOG.md b/grpc_server/CHANGELOG.md
index 2bf2b0307..b7454ac21 100644
--- a/grpc_server/CHANGELOG.md
+++ b/grpc_server/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## v1.0.0-rc.1 (2025-12-02)
+
+### Enhancements
+
+  * Major restructuring: separated into distinct grpc_core, grpc_server, and grpc_client packages
+
+### Bug fixes
+
+  * Fix Stream map_error send_response handling (#487)
+
 ## v0.11.5 (2025-11-14)
 
 ### Enhancements
diff --git a/grpc_server/lib/grpc/protoc/cli.ex b/grpc_server/lib/grpc/protoc/cli.ex
index 0a468ac41..26d228fff 100644
--- a/grpc_server/lib/grpc/protoc/cli.ex
+++ b/grpc_server/lib/grpc/protoc/cli.ex
@@ -83,11 +83,11 @@ defmodule GRPC.Protoc.CLI do
     |> Enum.reduce(ctx, &parse_param/2)
   end
 
-  defp parse_param("plugins=" <> plugins, ctx) do
+  defp parse_param("plugins=" <> plugins, %Context{} = ctx) do
     %Context{ctx | plugins: String.split(plugins, "+")}
   end
 
-  defp parse_param("gen_descriptors=" <> value, ctx) do
+  defp parse_param("gen_descriptors=" <> value, %Context{} = ctx) do
     case value do
       "true" ->
         %Context{ctx | gen_descriptors?: true}
@@ -97,7 +97,7 @@ defmodule GRPC.Protoc.CLI do
     end
   end
 
-  defp parse_param("package_prefix=" <> package, ctx) do
+  defp parse_param("package_prefix=" <> package, %Context{} = ctx) do
     if package == "" do
       raise "package_prefix can't be empty"
     else
@@ -105,11 +105,11 @@ defmodule GRPC.Protoc.CLI do
     end
   end
 
-  defp parse_param("transform_module=" <> module, ctx) do
+  defp parse_param("transform_module=" <> module, %Context{} = ctx) do
     %Context{ctx | transform_module: Module.concat([module])}
   end
 
-  defp parse_param("one_file_per_module=" <> value, ctx) do
+  defp parse_param("one_file_per_module=" <> value, %Context{} = ctx) do
     case value do
       "true" ->
         %Context{ctx | one_file_per_module?: true}
@@ -129,7 +129,7 @@ defmodule GRPC.Protoc.CLI do
   #   end
   # end
 
-  defp parse_param(_unknown, ctx) do
+  defp parse_param(_unknown, %Context{} = ctx) do
     ctx
   end
 
diff --git a/grpc_server/lib/grpc/protoc/generator.ex b/grpc_server/lib/grpc/protoc/generator.ex
index f7586885a..dc5e0768e 100644
--- a/grpc_server/lib/grpc/protoc/generator.ex
+++ b/grpc_server/lib/grpc/protoc/generator.ex
@@ -40,7 +40,10 @@ defmodule GRPC.Protoc.Generator do
     end
   end
 
-  defp generate_module_definitions(ctx, %Google.Protobuf.FileDescriptorProto{} = desc) do
+  defp generate_module_definitions(
+         %Context{} = ctx,
+         %Google.Protobuf.FileDescriptorProto{} = desc
+       ) do
     ctx =
       %Context{
         ctx
diff --git a/grpc_server/test/grpc/server/adapters/report_exception_test.exs b/grpc_server/test/grpc/server/adapters/report_exception_test.exs
index 975f3e3f2..f21a0702f 100644
--- a/grpc_server/test/grpc/server/adapters/report_exception_test.exs
+++ b/grpc_server/test/grpc/server/adapters/report_exception_test.exs
@@ -14,11 +14,7 @@ defmodule ExceptionServer do
 
   @impl true
   def handle_cast(:case_boom, state) do
-    a = fn -> :ok end
-
-    case a.() do
-      :error -> :boom
-    end
+    raise CaseClauseError, term: :ok
 
     {:noreply, state}
   end
diff --git a/mix.exs b/mix.exs
index a227268a1..30d173526 100644
--- a/mix.exs
+++ b/mix.exs
@@ -14,10 +14,10 @@ defmodule GRPC.GRPCRoot do
 
   defp deps do
     [
-      {:grpc_server, path: "grpc_server"},
+      {:grpc_server, path: "grpc_server"}
     ]
   end
- 
+
   defp aliases do
     [
       setup: cmd("deps.get"),
@@ -42,5 +42,4 @@ defmodule GRPC.GRPCRoot do
       end
     end
   end
-
 end