diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fb75192..b6ab4e6a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [6.4.3] - 2026-07-25
+
 ### Fixed
 
 - Kept Auto execution direct when structured pre-analysis is unavailable, and
diff --git a/Cargo.lock b/Cargo.lock
index 8ca55c03..a1c77cd5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -20,7 +20,7 @@ dependencies = [
 
 [[package]]
 name = "a3s-code-core"
-version = "6.4.2"
+version = "6.4.3"
 dependencies = [
  "a3s-acl 0.3.0",
  "a3s-common",
diff --git a/core/Cargo.toml b/core/Cargo.toml
index b810efb1..7b2c96e2 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "a3s-code-core"
-version = "6.4.2"
+version = "6.4.3"
 edition = "2021"
 authors = ["A3S Lab Team"]
 license = "MIT"
diff --git a/sdk/node/Cargo.lock b/sdk/node/Cargo.lock
index ebeec426..7890591a 100644
--- a/sdk/node/Cargo.lock
+++ b/sdk/node/Cargo.lock
@@ -20,7 +20,7 @@ dependencies = [
 
 [[package]]
 name = "a3s-code-core"
-version = "6.4.2"
+version = "6.4.3"
 dependencies = [
  "a3s-acl 0.3.0",
  "a3s-common",
@@ -81,7 +81,7 @@ dependencies = [
 
 [[package]]
 name = "a3s-code-node"
-version = "6.4.2"
+version = "6.4.3"
 dependencies = [
  "a3s-code-core",
  "anyhow",
diff --git a/sdk/node/Cargo.toml b/sdk/node/Cargo.toml
index 3cccf54b..1fc4bd85 100644
--- a/sdk/node/Cargo.toml
+++ b/sdk/node/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "a3s-code-node"
-version = "6.4.2"
+version = "6.4.3"
 edition = "2021"
 authors = ["A3S Lab Team"]
 license = "MIT"
@@ -11,7 +11,7 @@ description = "A3S Code Node.js bindings - Native addon via napi-rs"
 crate-type = ["cdylib"]
 
 [dependencies]
-a3s-code-core = { version = "6.4.2", path = "../../core", features = ["s3", "serve"] }
+a3s-code-core = { version = "6.4.3", path = "../../core", features = ["s3", "serve"] }
 napi = { version = "2", features = ["async", "napi6", "serde-json"] }
 napi-derive = "2"
 tokio = { version = "1.35", features = ["full"] }
diff --git a/sdk/node/examples/package-lock.json b/sdk/node/examples/package-lock.json
index d8b30b99..425eec8d 100644
--- a/sdk/node/examples/package-lock.json
+++ b/sdk/node/examples/package-lock.json
@@ -18,7 +18,7 @@
     },
     "..": {
       "name": "@a3s-lab/code",
-      "version": "6.4.2",
+      "version": "6.4.3",
       "license": "MIT",
       "devDependencies": {
         "@napi-rs/cli": "^2",
@@ -27,12 +27,12 @@
         "typescript": "^5.9.3"
       },
       "optionalDependencies": {
-        "@a3s-lab/code-darwin-arm64": "6.4.2",
-        "@a3s-lab/code-linux-arm64-gnu": "6.4.2",
-        "@a3s-lab/code-linux-arm64-musl": "6.4.2",
-        "@a3s-lab/code-linux-x64-gnu": "6.4.2",
-        "@a3s-lab/code-linux-x64-musl": "6.4.2",
-        "@a3s-lab/code-win32-x64-msvc": "6.4.2"
+        "@a3s-lab/code-darwin-arm64": "6.4.3",
+        "@a3s-lab/code-linux-arm64-gnu": "6.4.3",
+        "@a3s-lab/code-linux-arm64-musl": "6.4.3",
+        "@a3s-lab/code-linux-x64-gnu": "6.4.3",
+        "@a3s-lab/code-linux-x64-musl": "6.4.3",
+        "@a3s-lab/code-win32-x64-msvc": "6.4.3"
       }
     },
     "node_modules/@a3s-lab/code": {
diff --git a/sdk/node/package-lock.json b/sdk/node/package-lock.json
index 01b6d9c9..3f5cca91 100644
--- a/sdk/node/package-lock.json
+++ b/sdk/node/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@a3s-lab/code",
-  "version": "6.4.2",
+  "version": "6.4.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@a3s-lab/code",
-      "version": "6.4.2",
+      "version": "6.4.3",
       "license": "MIT",
       "devDependencies": {
         "@napi-rs/cli": "^2",
@@ -15,12 +15,12 @@
         "typescript": "^5.9.3"
       },
       "optionalDependencies": {
-        "@a3s-lab/code-darwin-arm64": "6.4.2",
-        "@a3s-lab/code-linux-arm64-gnu": "6.4.2",
-        "@a3s-lab/code-linux-arm64-musl": "6.4.2",
-        "@a3s-lab/code-linux-x64-gnu": "6.4.2",
-        "@a3s-lab/code-linux-x64-musl": "6.4.2",
-        "@a3s-lab/code-win32-x64-msvc": "6.4.2"
+        "@a3s-lab/code-darwin-arm64": "6.4.3",
+        "@a3s-lab/code-linux-arm64-gnu": "6.4.3",
+        "@a3s-lab/code-linux-arm64-musl": "6.4.3",
+        "@a3s-lab/code-linux-x64-gnu": "6.4.3",
+        "@a3s-lab/code-linux-x64-musl": "6.4.3",
+        "@a3s-lab/code-win32-x64-msvc": "6.4.3"
       }
     },
     "node_modules/@a3s-lab/code-darwin-arm64": {
diff --git a/sdk/node/package.json b/sdk/node/package.json
index 4f6dd2e1..08a51d45 100644
--- a/sdk/node/package.json
+++ b/sdk/node/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@a3s-lab/code",
-  "version": "6.4.2",
+  "version": "6.4.3",
   "description": "A3S Code - Native Node.js bindings for the coding-agent runtime",
   "main": "index.js",
   "types": "index.d.ts",
@@ -44,11 +44,11 @@
     "test:helpers": "node test-helpers.mjs"
   },
   "optionalDependencies": {
-    "@a3s-lab/code-darwin-arm64": "6.4.2",
-    "@a3s-lab/code-linux-x64-gnu": "6.4.2",
-    "@a3s-lab/code-linux-x64-musl": "6.4.2",
-    "@a3s-lab/code-linux-arm64-gnu": "6.4.2",
-    "@a3s-lab/code-linux-arm64-musl": "6.4.2",
-    "@a3s-lab/code-win32-x64-msvc": "6.4.2"
+    "@a3s-lab/code-darwin-arm64": "6.4.3",
+    "@a3s-lab/code-linux-x64-gnu": "6.4.3",
+    "@a3s-lab/code-linux-x64-musl": "6.4.3",
+    "@a3s-lab/code-linux-arm64-gnu": "6.4.3",
+    "@a3s-lab/code-linux-arm64-musl": "6.4.3",
+    "@a3s-lab/code-win32-x64-msvc": "6.4.3"
   }
 }
diff --git a/sdk/python-bootstrap/pyproject.toml b/sdk/python-bootstrap/pyproject.toml
index c5d17cff..231cfb98 100644
--- a/sdk/python-bootstrap/pyproject.toml
+++ b/sdk/python-bootstrap/pyproject.toml
@@ -7,7 +7,7 @@ name = "a3s-code"
 # Keep in sync with crates/code core release. The bootstrap loader fetches
 # the matching native wheel from `https://github.com/A3S-Lab/Code/releases/tag/v<version>`
 # at import time.
-version = "6.4.2"
+version = "6.4.3"
 description = "A3S Code Python SDK — pure-Python bootstrap that fetches the native wheel from GitHub Releases"
 readme = "README.md"
 license = {text = "MIT"}
diff --git a/sdk/python-bootstrap/src/a3s_code/_bootstrap.py b/sdk/python-bootstrap/src/a3s_code/_bootstrap.py
index edc4fac9..89399a74 100644
--- a/sdk/python-bootstrap/src/a3s_code/_bootstrap.py
+++ b/sdk/python-bootstrap/src/a3s_code/_bootstrap.py
@@ -31,7 +31,7 @@
 
 # Version is the bootstrap's own version, which equals the matching native
 # wheel version on GH Releases. Bumped by the release workflow.
-__version__ = "6.4.2"
+__version__ = "6.4.3"
 
 _DEFAULT_BASE_URL = "https://github.com/A3S-Lab/Code/releases/download"
 _REQUEST_TIMEOUT_S = 120
diff --git a/sdk/python/CHANGELOG.md b/sdk/python/CHANGELOG.md
index 286b8487..cf2c29dc 100644
--- a/sdk/python/CHANGELOG.md
+++ b/sdk/python/CHANGELOG.md
@@ -4,6 +4,14 @@ All notable changes to the A3S Code Python SDK will be documented in this file.
 
 ## [Unreleased]
 
+## [6.4.3] - 2026-07-25
+
+### Fixed
+
+- Updated the bundled Core so Auto execution stays direct when structured
+  pre-analysis is unavailable and explicit fallback plans contain the original
+  request instead of fabricated numbered tasks.
+
 ## [6.4.2] - 2026-07-23
 
 ### Fixed
diff --git a/sdk/python/Cargo.lock b/sdk/python/Cargo.lock
index 10111cc0..6e527d01 100644
--- a/sdk/python/Cargo.lock
+++ b/sdk/python/Cargo.lock
@@ -20,7 +20,7 @@ dependencies = [
 
 [[package]]
 name = "a3s-code-core"
-version = "6.4.2"
+version = "6.4.3"
 dependencies = [
  "a3s-acl 0.3.0",
  "a3s-common",
@@ -81,7 +81,7 @@ dependencies = [
 
 [[package]]
 name = "a3s-code-py"
-version = "6.4.2"
+version = "6.4.3"
 dependencies = [
  "a3s-code-core",
  "anyhow",
diff --git a/sdk/python/Cargo.toml b/sdk/python/Cargo.toml
index 1be70fcd..1da5a5c7 100644
--- a/sdk/python/Cargo.toml
+++ b/sdk/python/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "a3s-code-py"
-version = "6.4.2"
+version = "6.4.3"
 edition = "2021"
 authors = ["A3S Lab Team"]
 license = "MIT"
@@ -12,7 +12,7 @@ name = "a3s_code"
 crate-type = ["cdylib"]
 
 [dependencies]
-a3s-code-core = { version = "6.4.2", path = "../../core", features = ["s3", "serve"] }
+a3s-code-core = { version = "6.4.3", path = "../../core", features = ["s3", "serve"] }
 pyo3 = { version = "0.23", features = ["multiple-pymethods"] }
 tokio = { version = "1.35", features = ["full"] }
 serde_json = "1.0"
diff --git a/sdk/python/pyproject.toml b/sdk/python/pyproject.toml
index c7c7b927..fdbd3f71 100644
--- a/sdk/python/pyproject.toml
+++ b/sdk/python/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "maturin"
 
 [project]
 name = "a3s-code"
-version = "6.4.2"
+version = "6.4.3"
 description = "A3S Code - Native Python bindings for the coding-agent runtime"
 readme = "README.md"
 license = {text = "MIT"}