yoi/.yoi/tickets/00001KWF2210A/resolution.md

Implemented Workspace Backend config file schema and resolver.

Delivered:

• WorkspaceBackendConfigFile TOML schema with server, data, limits, and runtimes.remote sections.
• Fixed workspace-local config path .yoi/workspace-backend.local.toml.
• Defaults when config file is absent.
• Unknown-field rejection.
• Workspace-root relative path resolution and absolute path preservation.
• Resolved config boundary for ServerConfig, listen address, and database path.
• Data root derivation for workspace.db and embedded-runtime.
• Secret value exclusion from schema; token_ref fails closed until secret ref resolution is implemented.
• yoi-workspace-server serve loads config and applies only existing legacy dev CLI overrides.
• Focused tests for defaults, unknown fields, path handling, data overrides, and secret field behavior.

Validation:

• cargo test -p yoi-workspace-server
• cargo check -p yoi
• cargo fmt --check
• git diff --check
• nix build .#yoi --no-link