Add method doc to cogs config

[juniper-shopify]

Part of a gradual process to add comprehensive documentation comments to all
user-facing interfaces before the v1.0 release

[juniper-shopify]

• Basic streaming messages for Claude agent provider #518
• Expand the agent provider structure and add some configs for the claude provider #517
• Run cogs in custom working directory #516
• Alphabetize function DSL test cases #515
• Add method doc to cogs config #514 👈 (View in Graphite)
• Deep-Dupe config defaults before setting #513
• Add validation to cog configs #512
• Add a global config scope to set basic things that apply to all cogs of all types #511
• main

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[juniper-shopify]

Merge activity

• Nov 3, 4:37 PM UTC: Graphite rebased this pull request as part of a merge.
• Nov 3, 4:40 PM UTC: @juniper-shopify merged this pull request with Graphite.