Yichen Jiang
a06df4aa41
The composer's preset seat stays removed here — this layer moved it to the hero chip and the session-header action — so only the model seat takes the `modelSeatLocked` narrowing master introduced. Conflicts: apps/web/tests/snapshots/*/*.expected.md packages/client/connection/README.md packages/client/connection/README.zh.md packages/client/ui-conversation/src/client/skeleton/InputBar.tsx packages/host/apiproxy/src/fetch/client.ts
core/ — product API spine
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The session log, system-prompt assembly, tool registry, agent vocabulary, 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-loop/ |
Default concrete agent driver | ctx.agentLoop |
scope supplies the shared scoping primitive. agent owns the public seam, while agent-loop is its default implementation; extension plugins depend on the seam so the driver remains swappable.
Runnable compositions belong to examples/agent-spine-demo; this group owns only the swappable spine pieces.