fb6fb1fa12
#2201 landed three moves this branch sits on top of. `bindSettingsScope` became `ctx.settingsScope.bind` on the Settings surface, so the section injects that service and the Remote face instead of importing a free function; the `SettingsScope` types moved into the runtime contract module, which is where this branch's `base`, `user`, and `unset` now live; and the client `credentials/changed` event became the forwarded owner event `credentials/updated`, which the web-search card subscribes to through `ctx.remote.$on`. The generated module graph crossed mermaid's 1000-edge render guard with this branch's 14 new edges. The guard doubles again, exactly as it did at 500 — the graph counts real package edges, and trimming them to fit a renderer default would make the document lie about the dependency set.
core/ — product API spine
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The session log, system-prompt assembly, tool registry, agent vocabulary, deployment-default model selection, and concrete loop that form the harness's default control spine. These are product packages — the stable surface plugins and consumers build against.
| Package | Role | ctx key |
|---|---|---|
scope/ |
Scoped-context registration primitive | library — no ctx key |
session/ |
Event-sourced session log and in-memory store | ctx.sessions |
system-prompt/ |
Prompt and tool-schema assembly registry | ctx.systemPrompt |
tools/ |
Scoped tool registry and execution pipeline | ctx.tools |
agent/ |
Agent interface, registry, and event vocabulary | ctx.agents |
agent-default-model/ |
Default model selection shared by Agent entry points | ctx.agentDefaultModel |
agent-loop/ |
Default concrete agent driver | ctx.agentLoop |
scope supplies the shared scoping primitive. agent owns the public contract, while agent-loop is its default implementation; extension plugins depend on the seam so the driver remains swappable. agent-default-model owns the deployment selection an Agent entry point uses only when a session has no selection of its own.
Runnable compositions belong to examples/agent-spine-demo; this group owns only the swappable spine pieces.
The subsystem reference — the package-by-package loop map, the Agent handle and its delivery/interception contracts — is docs/subsystems/core.md; the default runnable composition is examples/agent-spine-demo.