Fix compilation errors from async-openai 0.32.2 and base64 0.22.1 upgrades

[Copilot]

Dependency upgrades introduced breaking API changes: async-openai 0.32.2 moved chat completion types to a gated submodule, and base64 0.22.1 deprecated the decode() function.

Changes

async-openai API migration:

• Enable chat-completion feature flag to access Chat Completion API
• Update imports from async_openai::types::* to async_openai::types::chat::*

base64 API migration:

• Replace deprecated base64::decode() with general_purpose::STANDARD.decode()
• Update imports to include Engine trait

Dependency resolution:

• Resolve bytes version conflict (1.10.1 → 1.11.0) between aws-config and async-openai

// Before
use async_openai::types::{CreateChatCompletionRequestArgs, ...};
base64::decode(s)

// After  
use async_openai::types::chat::{CreateChatCompletionRequestArgs, ...};
use base64::{Engine as _, engine::general_purpose};
general_purpose::STANDARD.decode(s)

Original prompt

fix issues due to dependencies upgrade: Compiling aws-config v1.8.12
error[E0432]: unresolved imports async_openai::types::ChatCompletionRequestAssistantMessageArgs, async_openai::types::ChatCompletionRequestMessage, async_openai::types::ChatCompletionRequestUserMessageArgs, async_openai::types::CreateChatCompletionRequestArgs
--> src/openai_client.rs:2:5
|
2 | ChatCompletionRequestAssistantMessageArgs, ChatCompletionRequestMessage,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no ChatCompletionRequestMessage in types
| |
| no ChatCompletionRequestAssistantMessageArgs in types
3 | ChatCompletionRequestUserMessageArgs, CreateChatCompletionRequestArgs,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no CreateChatCompletionRequestArgs in types
| |
| no ChatCompletionRequestUserMessageArgs in types

error[E0432]: unresolved imports async_openai::config, async_openai::Client
--> src/openai_client.rs:5:20
|
5 | use async_openai::{config::OpenAIConfig, Client};
| ^^^^^^ ^^^^^^ no Client in the root
| |
| could not find config in async_openai
|
note: found an item that was configured out
--> /Users/blank/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/async-openai-0.32.2/src/lib.rs:258:9
|
257 | #[cfg(feature = "_api")]
| ---------------- the item is gated behind the _api feature
258 | pub mod config;
| ^^^^^^
= help: consider importing one of these structs instead:
aws_config::imds::Client
aws_sdk_dynamodb::Client
reqwest::Client
note: found an item that was configured out
--> /Users/blank/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/async-openai-0.32.2/src/lib.rs:326:17
|
325 | #[cfg(feature = "_api")]
| ---------------- the item is gated behind the _api feature
326 | pub use client::Client;
| ^^^^^^

warning: use of deprecated function base64::decode: Use Engine::decode
--> src/dynamo/create_item.rs:30:37
|
30 | ... base64::decode(s).unwrap_or_default(),
| ^^^^^^
|
= note: #[warn(deprecated)] on by default

warning: use of deprecated function base64::decode: Use Engine::decode
--> src/dynamo/create_item.rs:55:53
|
55 | ... base64::decode(s).unwrap_or_default(),
| ^^^^^^

error[E0282]: type annotations needed
--> src/openai_client.rs:122:25
|
122 | Some(client) => client.clone(),
| ^^^^^^ cannot infer type

error[E0282]: type annotations needed
--> src/openai_client.rs:139:27
|
139 | .map_err(|e| e.to_string())?
| ^ - type must be known at this point
|
help: consider giving this closure parameter an explicit type
|
139 | .map_err(|e: /* Type */| e.to_string())?
| ++++++++++++

error[E0282]: type annotations needed
--> src/openai_client.rs:144:27
|
144 | .map_err(|e| e.to_string())?
| ^ - type must be known at this point
|
help: consider giving this closure parameter an explicit type
|
144 | .map_err(|e: /* Type */| e.to_string())?
| ++++++++++++

error[E0282]: type annotations needed
--> src/openai_client.rs:155:23
|
155 | .map_err(|e| e.to_string())?
| ^ - type must be known at this point
|
help: consider giving this closure parameter an explicit type
|
155 | .map_err(|e: /* Type */| e.to_string())?
| ++++++++++++

error[E0282]: type annotations needed
--> src/openai_client.rs:165:19
|
165 | .map_err(|e| e.to_string())?;
| ^ - type must be known at this point
|
help: consider giving this closure parameter an explicit type
|
165 | .map_err(|e: /* Type */| e.to_string())?;
| ++++++++++++

error[E0282]: type annotations needed
--> src/openai_client.rs:168:9
|
168 | let mut stream = match openai_client.chat().create_stream(request).await {
| ^^^^^^^^^^
...
184 | while let Some(result) = stream.next().await {
| ------ type must be known at this point
|
help: consider giving stream an explicit type
|
168 | let mut stream: /* Type */ = match openai_client.chat().create_stream(request).await {
| ++++++++++++

error[E0282]: type annotations needed
--> src/openai_client.rs:212:37
|
212 | let error_message = e.to_string();
| ^ cannot infer type

Some errors have detailed ...

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