feat: Claude 3.7 Sonnet with extended thinking

[salman1993]

Claude 3.7 Sonnet works out of the box without extended thinking (changes in this PR not needed). To enable extended thinking, we have set some env vars:

cargo build

# configure Anthropic provider with model 'claude-3-7-sonnet-latest'

# start a session
GOOSE_CLI_SHOW_THINKING=true ANTHROPIC_THINKING_ENABLED=true ./target/debug/goose session

# test on a string
GOOSE_CLI_SHOW_THINKING=true ANTHROPIC_THINKING_ENABLED=true ./target/debug/goose run --text "can you explain the code in crates/goose-cli/src/session/output.rs?"

see longer discussion post on reasoning: #1300

[salman1993]

tested in goose-server with this script:

1. Build & start goosed: cargo build; ANTHROPIC_THINKING_ENABLED=true ./target/debug/goosed agent

2. Run script in new terminal

#!/bin/bash
set -euxo pipefail
IFS=$'\n\t'

# Send request to create an agent
curl --request POST \
  --url http://localhost:3000/agent \
  --header 'Content-Type: application/json' \
  --header 'X-Secret-Key: test' \
  --data '{
    "version": "truncate",
    "provider": "anthropic"
  }'

sleep 5

# Add a system
curl --request POST \
  --url http://localhost:3000/extensions/add \
  --header 'Content-Type: application/json' \
  --header 'X-Secret-Key: test' \
  --data '{
    "type": "builtin",
    "name": "developer"
  }'

sleep 5

# Send a user message 
curl --request POST \
  --url http://localhost:3000/reply \
  --header 'Accept: text/event-stream' \
  --header 'Content-Type: application/json' \
  --header 'X-Secret-Key: test' \
  --header 'x-protocol: data' \
  --data '{
    "messages": [
      {
        "role": "user",
        "content": "what tools do you have?"
      }
    ]
  }'

Output

g:"Let me check what tools are available to me based on the introduction and function descriptions.\n\nBased on the introduction, I have access to the following tools from the developer extension:\n\n1. `developer__shell` - Execute shell commands\n2. `developer__text_editor` - Edit files with operations like view, write, str_replace, and undo_edit\n3. `developer__list_windows` - List available window titles for screen capture\n4. `developer__screen_capture` - Capture a screenshot of a display or window\n\nThese tools allow me to execute commands, work with files, and capture screenshots. I'll provide an overview of these tools to the user."
j:{"signature":"EuYBCkQYAiJAzKcGj8ADFf7uY6hEKcG5tXaIzFUxzdUdJ/+zaeGkJqW4QsI3Owk9uJBAc15g3yugIieKyUUtsGXZCzPLQnHZNBIMy5dHoyx06mewycr1Ggz4IftlvLHc92EdgDkiMAGytyjoe5+6aVXNVOxJfU3jx+lLuXGBcHnyauSE/P9pf8QQ52Pd8iYnz2Ztw2AKtypQzjHmF9arq6bRRDKyTQf4+XyNZOL3HIIj579yr8/YQtkmDSMomCmzDoW3XxxoqOP8vjhSd1aQ3Fq0FLi/idQjsmx8D/SEcufhnQcry0j7mxg="}
0:"# Available Tools\n"
0:"\n"
0:"I currently have access to the following tools from the **developer extension**:\n"
0:"\n"
0:"1. **Shell Command Tool**\n"
0:"   - Executes commands in the shell\n"
0:"   - Returns both output and error messages\n"
0:"   - Commands run in separate processes (directory changes don't persist between calls)\n"
0:"   - Uses ripgrep (`rg`) for efficient file searching\n"
0:"\n"
0:"2. **Text Editor Tool**\n"
0:"   - View file contents\n"
0:"   - Write or overwrite files\n"
0:"   - Replace specific strings in files\n"
0:"   - Undo recent edits\n"
0:"\n"
0:"3. **Window Management Tools**\n"
0:"   - List window titles that can be used with screen capture\n"
0:"   - Capture screenshots of specific displays or windows\n"
0:"\n"
0:"These tools allow me to help you with development tasks such as running commands, editing code files, and capturing screenshots for debugging purposes.\n"
0:"\n"
0:"Is there a specific task you'd like assistance with using these tools?\n"
d:{"finishReason":"stop","usage":{"completionTokens":0,"promptTokens":0}}