Fireworks langchain integration (python)

[sammydick22]

Add Fireworks AI Integration Support

Description

This PR adds Fireworks AI model support to the CDP LangChain integration, expanding LLM provider options alongside existing Cerebras and OpenAI providers.

Key Changes:

• Added Fireworks provider support to CdpAgentkitWrapper
• Implemented Fireworks-specific initialization in FireworksToolkit
• Created Fireworks integration documentation
• Maintained consistent interface with existing providers

What Changed?

File(s)	Changes
cdp_agentkit_wrapper.py	Added Fireworks config validation and initialization
cdp_toolkit.py	Dynamic provider handling for Fireworks and error checking
fireworks_integration.md	Comprehensive Fireworks usage guide

Why This Change?

• Provides access to Fireworks' optimized open-source models
• Maintains multi-provider architecture pattern
• Enables cost/performance optimization through model choice

Qualified Impact Analysis

Affected Components:

1. Model Provider Configuration
2. Environment Variable Handling
3. Streaming Response Pipeline

Failure Scenarios:

1. Invalid Fireworks Model

   • Detection: Model validation during toolkit initialization
   • Resolution: Error message shows supported Fireworks models

2. Missing Fireworks Credentials

   • Detection: API key validation at request time
   • Resolution: Clear documentation of required FIREWORKS_API_KEY

Rollback Strategy:

1. Remove FIREWORKS_API_KEY from environment if added
2. Revert changes to:
   • cdp_agentkit_wrapper.py
   • cdp_toolkit.py
3. Remove fireworks_integration.md

Testing Performed

1. Verified Fireworks model initialization and inference
2. Tested streaming responses with Fireworks models
3. Validated error handling for invalid configurations
4. Confirmed existing provider functionality unaffected

Documentation Updates

• Added Fireworks-specific integration guide
• Updated provider selection documentation in README
• Added Fireworks environment variables to reference table

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 1 Sum 2