diff --git a/CHANGELOG.md b/CHANGELOG.md
index efabe93..21a4066 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,24 +4,54 @@ Notable changes to AgentSeek API are documented in this file.
 
 ## Unreleased
 
+## 0.2.2 - 2026-08-16
+
+### Highlights
+
+- Added bounded parallel Redis job execution within a worker process. Set
+  `WORKER_CONCURRENT_JOBS` to control the limit; the default is `10`.
+- Aligned assistant and run `config.configurable` / `context` handling with the
+  LangGraph API contract, including assistant defaults and legacy configurable
+  access for graphs without a context schema.
+- Defined one deterministic environment-ownership contract for the `dev`,
+  `serve`, `worker`, and `scheduler` host runtimes.
+
 ### Fixed
 
+- Made Redis job acknowledgement conditional on ownership of the active worker
+  lease, and stopped scheduling safely when a job fails or the lease is lost.
+- Rejected client requests that provide both non-empty `config.configurable` and
+  `context`, mirrored either input into the other representation, and merged
+  assistant configuration into run configuration without discarding nested
+  defaults.
 - Made inherited host environment keys, including explicit empty strings,
   authoritative over config and CLI dotenv sources.
-- Parse each dotenv source independently with strict malformed-file handling,
-  and distinguish valueless `KEY` from explicit empty `KEY=`.
-- Start worker and scheduler roles in fresh child processes so their settings
-  are constructed after the resolved environment is installed.
+- Parsed each dotenv source independently with strict malformed-file handling,
+  and distinguished valueless `KEY` from explicit empty `KEY=`.
+- Started `worker` and `scheduler` in fresh child processes so their settings
+  are built after the resolved environment is installed.
+- Added bounded signal forwarding and descendant-process cleanup for `serve`,
+  `worker`, and `scheduler` across supported platforms.
 - Kept version, help, and Dockerfile rendering independent of runtime settings
   validation.
+- Fell back to an ASCII CLI banner when a legacy Windows console cannot encode
+  the Unicode banner.
 
 ### Upgrade notes
 
-- Dotenv values no longer interpolate from config mappings or other dotenv
-  files. Put dependent bindings in one physical file or pass the final literal
-  value.
-- Malformed dotenv syntax now exits with status 2 instead of warning and
-  continuing with a partial runtime configuration.
+- Redis workers now execute up to `10` jobs concurrently by default. Set
+  `WORKER_CONCURRENT_JOBS=1` to retain the previous serial behavior.
+- Clients must not send both non-empty `config.configurable` and `context` in
+  one assistant or run request; such requests now return HTTP 400. Prefer
+  `context` for new integrations.
+- For `dev`, `serve`, `worker`, and `scheduler`, dotenv interpolation is
+  supported only against the inherited environment and earlier bindings in the
+  same physical file.
+- For those host runtime commands, missing, malformed, and non-UTF-8 dotenv
+  sources fail closed with status 2 before a runtime child starts.
+- Dependency resolution now requires SQLAlchemy 2.0.12 or newer, LangGraph
+  1.0.6 or newer, LangChain Core 1.2.5 or newer, and MCP 1.27.1 through the 1.x
+  series. `python-dotenv` 1.0 through 1.2 is now a direct dependency.
 
 ## 0.2.1 - 2026-07-14
 
diff --git a/README.md b/README.md
index e45a2ea..cfa7826 100644
--- a/README.md
+++ b/README.md
@@ -185,7 +185,7 @@ When the server starts it prints the banner and local URLs:
 ╠═╣│ ┬├┤ │││ │ ╚═╗├┤ ├┤ ├┴┐
 ╩ ╩└─┘└─┘┘└┘ ┴ ╚═╝└─┘└─┘┴ ┴
 
-     AgentSeek v0.2.1
+     AgentSeek v0.2.2
 
 - 🚀 API: http://localhost:2024
 - 📚 Docs: http://localhost:2024/docs
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 0261120..9571a86 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -181,7 +181,7 @@ uv run agentseek-api dev --config ./langgraph.json
 ╠═╣│ ┬├┤ │││ │ ╚═╗├┤ ├┤ ├┴┐
 ╩ ╩└─┘└─┘┘└┘ ┴ ╚═╝└─┘└─┘┴ ┴
 
-     AgentSeek v0.2.1
+     AgentSeek v0.2.2
 
 - 🚀 API: http://localhost:2024
 - 📚 Docs: http://localhost:2024/docs
diff --git a/pyproject.toml b/pyproject.toml
index 961d4b8..1bbcd76 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "agentseek-api"
-version = "0.2.1"
+version = "0.2.2"
 description = "AgentSeek API core runtime with OceanBase checkpoints."
 readme = "README.md"
 requires-python = ">=3.12"
diff --git a/src/agentseek_api/__init__.py b/src/agentseek_api/__init__.py
index 3ced358..b5fdc75 100644
--- a/src/agentseek_api/__init__.py
+++ b/src/agentseek_api/__init__.py
@@ -1 +1 @@
-__version__ = "0.2.1"
+__version__ = "0.2.2"
diff --git a/uv.lock b/uv.lock
index eae8bb9..7a9ebb5 100644
--- a/uv.lock
+++ b/uv.lock
@@ -29,7 +29,7 @@ wheels = [
 
 [[package]]
 name = "agentseek-api"
-version = "0.2.1"
+version = "0.2.2"
 source = { editable = "." }
 dependencies = [
     { name = "aiomysql" },