### Summary
This PR introduces a subcommand implementation that allows `langgraph
deploy list` and `langgraph deploy delete` subcommands.
#### `langgraph deploy list`
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 langgraph % langgraph deploy list --help ⎈ gke_langchain-test-387119_us-west1_langgraph-cloud-us-west1
Usage: langgraph deploy list [OPTIONS]
[Beta] List LangSmith Deployments.
Options:
--name-contains TEXT Only show deployments whose names contain this value.
--api-key TEXT API key. Can also be set via LANGGRAPH_HOST_API_KEY,
LANGSMITH_API_KEY, or LANGCHAIN_API_KEY environment
variable or .env file.
--help Show this message and exit.
```
Output example:
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 cli % langgraph deploy list
Deployment ID Deployment Name Deployment URL
------------------------------------ -------------------------- ------------------------------------------------------------------------------------
a40d6567-87c0-485a-a23d-94309a7d4519 ht-andrew-test-04 -
9da26acb-d0c9-4af0-af9e-f3fe8dfe85bc ht-anirudh-deployment-test https://ht-anirudh-deployment-test-428af4737f8a533cb2b107587eb8f38f.us.langgraph.app/
```
#### `langgraph deploy delete`
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 langgraph % langgraph deploy delete --help ⎈ gke_langchain-test-387119_us-west1_langgraph-cloud-us-west1
Usage: langgraph deploy delete [OPTIONS] DEPLOYMENT_ID
[Beta] Delete a LangSmith Deployment.
Options:
--force Delete without prompting for confirmation.
--api-key TEXT API key. Can also be set via LANGGRAPH_HOST_API_KEY,
LANGSMITH_API_KEY, or LANGCHAIN_API_KEY environment variable
or .env file.
--help Show this message and exit.
```
Output example:
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 cli % langgraph deploy delete a40d6567-87c0-485a-a23d-94309a7d4519
Are you sure you want to delete deployment ID a40d6567-87c0-485a-a23d-94309a7d4519? (Y/n): Y
Host API key:
Deleted deployment a40d6567-87c0-485a-a23d-94309a7d4519.
```
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 cli % langgraph deploy delete a40d6567-87c0-485a-a23d-94309a7d4519
Are you sure you want to delete deployment ID a40d6567-87c0-485a-a23d-94309a7d4519? (Y/n): n
Aborted!
```
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 cli % langgraph deploy delete 9da26acb-d0c9-4af0-af9e-f3fe8dfe85bc --force
Host API key:
Deleted deployment 9da26acb-d0c9-4af0-af9e-f3fe8dfe85bc.
```
### Summary
This PR introduces a subcommand implementation that allows `langgraph
deploy list` and `langgraph deploy delete` subcommands.
#### `langgraph deploy list`
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 langgraph % langgraph deploy list --help ⎈ gke_langchain-test-387119_us-west1_langgraph-cloud-us-west1
Usage: langgraph deploy list [OPTIONS]
[Beta] List LangSmith Deployments.
Options:
--name-contains TEXT Only show deployments whose names contain this value.
--api-key TEXT API key. Can also be set via LANGGRAPH_HOST_API_KEY,
LANGSMITH_API_KEY, or LANGCHAIN_API_KEY environment
variable or .env file.
--help Show this message and exit.
```
Output example:
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 cli % langgraph deploy list
Deployment ID Deployment Name Deployment URL
------------------------------------ -------------------------- ------------------------------------------------------------------------------------
a40d6567-87c0-485a-a23d-94309a7d4519 ht-andrew-test-04 -
9da26acb-d0c9-4af0-af9e-f3fe8dfe85bc ht-anirudh-deployment-test https://ht-anirudh-deployment-test-428af4737f8a533cb2b107587eb8f38f.us.langgraph.app
```
#### `langgraph deploy delete`
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 langgraph % langgraph deploy delete --help ⎈ gke_langchain-test-387119_us-west1_langgraph-cloud-us-west1
Usage: langgraph deploy delete [OPTIONS] DEPLOYMENT_ID
[Beta] Delete a LangSmith Deployment.
Options:
--force Delete without prompting for confirmation.
--api-key TEXT API key. Can also be set via LANGGRAPH_HOST_API_KEY,
LANGSMITH_API_KEY, or LANGCHAIN_API_KEY environment variable
or .env file.
--help Show this message and exit.
```
Output example:
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 cli % langgraph deploy delete a40d6567-87c0-485a-a23d-94309a7d4519
Are you sure you want to delete deployment ID a40d6567-87c0-485a-a23d-94309a7d4519? (Y/n): Y
Host API key:
Deleted deployment a40d6567-87c0-485a-a23d-94309a7d4519.
```
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 cli % langgraph deploy delete a40d6567-87c0-485a-a23d-94309a7d4519
Are you sure you want to delete deployment ID a40d6567-87c0-485a-a23d-94309a7d4519? (Y/n): n
Aborted!
```
```bash
(env) andrewnguonly@Andrew-Nguonly-KC23X90J02 cli % langgraph deploy delete 9da26acb-d0c9-4af0-af9e-f3fe8dfe85bc --force
Host API key:
Deleted deployment 9da26acb-d0c9-4af0-af9e-f3fe8dfe85bc.
```
This adds a configuration option in `HttpConfig` that allows LangGraph
Platform users to apply custom authentication hooks before (other)
custom middleware. Currently, the order is fixed (custom middleware is
always evaluated before custom auth).
(Apologies for the noise in
[de187a9](https://github.com/langchain-ai/langgraph/pull/6179/commits/de187a989e807c5687c22db1fc065d24030fa6b7),
apparently from the forced application of new linter rules.)
### Description
Added unit tests for util.py.
Authored by @oumizx. Had to copy #6113 into this separate PR because
langgraph/libs/cli was having issues with secrets.
