diff --git a/THIRD_PARTY_NOTICES.md b/THIRD_PARTY_NOTICES.md
index 659018f35d..8aaed6244e 100644
--- a/THIRD_PARTY_NOTICES.md
+++ b/THIRD_PARTY_NOTICES.md
@@ -118,18 +118,18 @@ pnpm applies local patches to the following packages at install time, so shipped
 
 The project owner authorizes distribution of every version of the official `@anthropic-ai/claude-agent-sdk` package and the official Claude Code CLI/platform payloads that each version declares through `optionalDependencies`. This identity-scoped authorization does not classify their declared terms as permissive and does not cover any unrelated runtime package; version, declared-license, and payload-set changes still require the ordinary dependency, lockfile, compatibility, terms, and notices review.
 
-The installed SDK 0.3.241 declares the following optional platform packages. Each carries the official Claude Code 2.1.241 executable; the package identities and versions come from the SDK manifest, while the declared license field is verified against the platform payload installed for the current host.
+The installed SDK 0.3.220 declares the following optional platform packages. Each carries the official Claude Code 2.1.220 executable; the package identities and versions come from the SDK manifest, while the declared license field is verified against the platform payload installed for the current host.
 
 | Optional platform package | Version | Declared license |
 | --- | --- | --- |
-| [`@anthropic-ai/claude-agent-sdk-darwin-arm64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-darwin-arm64) | 0.3.241 | SEE LICENSE IN LICENSE.md |
-| [`@anthropic-ai/claude-agent-sdk-darwin-x64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-darwin-x64) | 0.3.241 | SEE LICENSE IN LICENSE.md |
-| [`@anthropic-ai/claude-agent-sdk-linux-arm64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-linux-arm64) | 0.3.241 | SEE LICENSE IN LICENSE.md |
-| [`@anthropic-ai/claude-agent-sdk-linux-arm64-musl`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-linux-arm64-musl) | 0.3.241 | SEE LICENSE IN LICENSE.md |
-| [`@anthropic-ai/claude-agent-sdk-linux-x64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-linux-x64) | 0.3.241 | SEE LICENSE IN LICENSE.md |
-| [`@anthropic-ai/claude-agent-sdk-linux-x64-musl`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-linux-x64-musl) | 0.3.241 | SEE LICENSE IN LICENSE.md |
-| [`@anthropic-ai/claude-agent-sdk-win32-arm64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-win32-arm64) | 0.3.241 | SEE LICENSE IN LICENSE.md |
-| [`@anthropic-ai/claude-agent-sdk-win32-x64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-win32-x64) | 0.3.241 | SEE LICENSE IN LICENSE.md |
+| [`@anthropic-ai/claude-agent-sdk-darwin-arm64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-darwin-arm64) | 0.3.220 | SEE LICENSE IN LICENSE.md |
+| [`@anthropic-ai/claude-agent-sdk-darwin-x64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-darwin-x64) | 0.3.220 | SEE LICENSE IN LICENSE.md |
+| [`@anthropic-ai/claude-agent-sdk-linux-arm64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-linux-arm64) | 0.3.220 | SEE LICENSE IN LICENSE.md |
+| [`@anthropic-ai/claude-agent-sdk-linux-arm64-musl`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-linux-arm64-musl) | 0.3.220 | SEE LICENSE IN LICENSE.md |
+| [`@anthropic-ai/claude-agent-sdk-linux-x64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-linux-x64) | 0.3.220 | SEE LICENSE IN LICENSE.md |
+| [`@anthropic-ai/claude-agent-sdk-linux-x64-musl`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-linux-x64-musl) | 0.3.220 | SEE LICENSE IN LICENSE.md |
+| [`@anthropic-ai/claude-agent-sdk-win32-arm64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-win32-arm64) | 0.3.220 | SEE LICENSE IN LICENSE.md |
+| [`@anthropic-ai/claude-agent-sdk-win32-x64`](https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk-win32-x64) | 0.3.220 | SEE LICENSE IN LICENSE.md |
 
 
 ## Development-only npm dependencies
diff --git a/docs/module-graph.i18n.yaml b/docs/module-graph.i18n.yaml
index cbec50a70c..79103c7341 100644
--- a/docs/module-graph.i18n.yaml
+++ b/docs/module-graph.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/module-graph.md
-module-graph.md: 2229efcd7e76b3b224eb307ee7de9ecea0ad85d7
-module-graph.zh.md: 3edca4ea261f68593973149b21e72e4a25d7a504
+module-graph.md: 41289fce09b82cdf81aa3c3450ee367be15a10c1
+module-graph.zh.md: 5f8797315daaac35411f41dfcf244c6689540512
diff --git a/docs/module-graph.md b/docs/module-graph.md
index 2229efcd7e..41289fce09 100644
--- a/docs/module-graph.md
+++ b/docs/module-graph.md
@@ -378,7 +378,6 @@ flowchart TD
   pkg_sdk_app --> pkg_invariants
   pkg_sdk_minimal --> pkg_invariants
   pkg_code_runtime --> pkg_invariants
-  pkg_code_runtime_python --> pkg_invariants
   pkg_credentials --> pkg_invariants
   pkg_e2b --> pkg_invariants
   pkg_experimental_agent_team_profile --> pkg_invariants
@@ -472,6 +471,10 @@ flowchart TD
   pkg_app_boot --> pkg_invariants
   pkg_app_boot --> pkg_launch_environment
   pkg_app_boot --> pkg_system_prompt
+  pkg_code_runtime_python --> pkg_code_runtime
+  pkg_code_runtime_python --> pkg_invariants
+  pkg_code_runtime_python --> pkg_session
+  pkg_code_runtime_python --> pkg_timeout
   pkg_code_runtime_worker_thread --> pkg_code_runtime
   pkg_code_runtime_worker_thread --> pkg_invariants
   pkg_code_runtime_worker_thread --> pkg_session
@@ -1372,7 +1375,6 @@ flowchart TD
 | [`sdk-app`](../packages/bundle/sdk-app) | `bundle` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`sdk-minimal`](../packages/bundle/sdk-minimal) | `bundle` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`code-runtime`](../packages/code-runtime/code-runtime) | `code-runtime` | [`invariants`](../packages/runtime-diagnostics/invariants) |
-| [`code-runtime-python`](../packages/code-runtime/code-runtime-python) | `code-runtime` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`credentials`](../packages/credentials/credentials) | `credentials` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`e2b`](../packages/e2b/e2b) | `e2b` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`experimental-agent-team-profile`](../packages/experimental/agent-team-profile) | `experimental` | [`invariants`](../packages/runtime-diagnostics/invariants) |
@@ -1415,6 +1417,7 @@ flowchart TD
 | [`spill`](../packages/spill/spill) | `spill` | [`brand`](../packages/util/brand), [`invariants`](../packages/runtime-diagnostics/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`attachment-local`](../packages/attachment/attachment-local) | `attachment` | [`attachment`](../packages/attachment/attachment), [`home-paths`](../packages/util/home-paths), [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`app-boot`](../packages/boot/app-boot) | `boot` | [`home-paths`](../packages/util/home-paths), [`invariants`](../packages/runtime-diagnostics/invariants), [`launch-environment`](../packages/util/launch-environment), [`system-prompt`](../packages/core/system-prompt) |
+| [`code-runtime-python`](../packages/code-runtime/code-runtime-python) | `code-runtime` | [`code-runtime`](../packages/code-runtime/code-runtime), [`invariants`](../packages/runtime-diagnostics/invariants), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
 | [`code-runtime-worker-thread`](../packages/code-runtime/code-runtime-worker-thread) | `code-runtime` | [`code-runtime`](../packages/code-runtime/code-runtime), [`invariants`](../packages/runtime-diagnostics/invariants), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
 | [`persona`](../packages/preset/persona) | `preset` | [`invariants`](../packages/runtime-diagnostics/invariants), [`system-prompt`](../packages/core/system-prompt) |
 | [`sandbox`](../packages/sandbox/sandbox) | `sandbox` | [`invariants`](../packages/runtime-diagnostics/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
diff --git a/docs/module-graph.zh.md b/docs/module-graph.zh.md
index 3edca4ea26..5f8797315d 100644
--- a/docs/module-graph.zh.md
+++ b/docs/module-graph.zh.md
@@ -380,7 +380,6 @@ flowchart TD
   pkg_sdk_app --> pkg_invariants
   pkg_sdk_minimal --> pkg_invariants
   pkg_code_runtime --> pkg_invariants
-  pkg_code_runtime_python --> pkg_invariants
   pkg_credentials --> pkg_invariants
   pkg_e2b --> pkg_invariants
   pkg_experimental_agent_team_profile --> pkg_invariants
@@ -474,6 +473,10 @@ flowchart TD
   pkg_app_boot --> pkg_invariants
   pkg_app_boot --> pkg_launch_environment
   pkg_app_boot --> pkg_system_prompt
+  pkg_code_runtime_python --> pkg_code_runtime
+  pkg_code_runtime_python --> pkg_invariants
+  pkg_code_runtime_python --> pkg_session
+  pkg_code_runtime_python --> pkg_timeout
   pkg_code_runtime_worker_thread --> pkg_code_runtime
   pkg_code_runtime_worker_thread --> pkg_invariants
   pkg_code_runtime_worker_thread --> pkg_session
@@ -1374,7 +1377,6 @@ flowchart TD
 | [`sdk-app`](../packages/bundle/sdk-app) | `bundle` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`sdk-minimal`](../packages/bundle/sdk-minimal) | `bundle` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`code-runtime`](../packages/code-runtime/code-runtime) | `code-runtime` | [`invariants`](../packages/runtime-diagnostics/invariants) |
-| [`code-runtime-python`](../packages/code-runtime/code-runtime-python) | `code-runtime` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`credentials`](../packages/credentials/credentials) | `credentials` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`e2b`](../packages/e2b/e2b) | `e2b` | [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`experimental-agent-team-profile`](../packages/experimental/agent-team-profile) | `experimental` | [`invariants`](../packages/runtime-diagnostics/invariants) |
@@ -1417,6 +1419,7 @@ flowchart TD
 | [`spill`](../packages/spill/spill) | `spill` | [`brand`](../packages/util/brand), [`invariants`](../packages/runtime-diagnostics/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`attachment-local`](../packages/attachment/attachment-local) | `attachment` | [`attachment`](../packages/attachment/attachment), [`home-paths`](../packages/util/home-paths), [`invariants`](../packages/runtime-diagnostics/invariants) |
 | [`app-boot`](../packages/boot/app-boot) | `boot` | [`home-paths`](../packages/util/home-paths), [`invariants`](../packages/runtime-diagnostics/invariants), [`launch-environment`](../packages/util/launch-environment), [`system-prompt`](../packages/core/system-prompt) |
+| [`code-runtime-python`](../packages/code-runtime/code-runtime-python) | `code-runtime` | [`code-runtime`](../packages/code-runtime/code-runtime), [`invariants`](../packages/runtime-diagnostics/invariants), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
 | [`code-runtime-worker-thread`](../packages/code-runtime/code-runtime-worker-thread) | `code-runtime` | [`code-runtime`](../packages/code-runtime/code-runtime), [`invariants`](../packages/runtime-diagnostics/invariants), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
 | [`persona`](../packages/preset/persona) | `preset` | [`invariants`](../packages/runtime-diagnostics/invariants), [`system-prompt`](../packages/core/system-prompt) |
 | [`sandbox`](../packages/sandbox/sandbox) | `sandbox` | [`invariants`](../packages/runtime-diagnostics/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
diff --git a/packages/code-runtime/code-runtime-python/package.json b/packages/code-runtime/code-runtime-python/package.json
index cd5aa2996c..97bcc57447 100644
--- a/packages/code-runtime/code-runtime-python/package.json
+++ b/packages/code-runtime/code-runtime-python/package.json
@@ -32,11 +32,20 @@
   ],
   "license": "MIT",
   "peerDependencies": {
+    "@deepseek-ai/dsh-code-runtime": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/dsh-session": "workspace:^",
+    "@deepseek-ai/dsh-timeout": "workspace:^",
     "@deepseek-ai/cordis": "workspace:^"
   },
   "devDependencies": {
+    "@deepseek-ai/dsh-code-runtime": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/dsh-session": "workspace:^",
+    "@deepseek-ai/dsh-timeout": "workspace:^",
     "@deepseek-ai/cordis": "workspace:^"
+  },
+  "dependencies": {
+    "@deepseek-ai/schemastery": "workspace:^"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 326595dfff..9df1171843 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -3954,13 +3954,26 @@ importers:
         version: link:../../runtime-diagnostics/invariants
 
   packages/code-runtime/code-runtime-python:
+    dependencies:
+      '@deepseek-ai/schemastery':
+        specifier: link:../../../vendor/schemastery
+        version: link:../../../vendor/schemastery
     devDependencies:
       '@deepseek-ai/cordis':
         specifier: workspace:^
         version: link:../../../vendor/cordis
+      '@deepseek-ai/dsh-code-runtime':
+        specifier: workspace:^
+        version: link:../code-runtime
       '@deepseek-ai/dsh-invariants':
         specifier: workspace:^
         version: link:../../runtime-diagnostics/invariants
+      '@deepseek-ai/dsh-session':
+        specifier: workspace:^
+        version: link:../../core/session
+      '@deepseek-ai/dsh-timeout':
+        specifier: workspace:^
+        version: link:../../util/timeout
 
   packages/code-runtime/code-runtime-worker-thread:
     dependencies: