d3be934a17
Codex review of the interception-seams merge flagged current-state prose still describing removed/renamed surfaces: - packages/core/agent/src/types.ts module doc: the agent/* "transient emits" list still ended with "the turn boundaries" — corrected to state turn/step boundaries are durable session/event records, not agent/* emits, and to list the actual interception seams (prompt-submit/pre-step/request/step-result/ turn-continuation) + agent/session-start. - interception-seams RFC: "agent/turn-end fires and the ACP bridge settles" → the durable turn/end is appended and ACP settles off it (no turn mirror). - two proposed RFCs (acp-agent-client-protocol, optional-code-mode) named the pre-split `tools/execute` waterfall → the `tools/pre-execute`/`tools/post-execute` pair. Regenerated the cordis catalog (module-doc change). No code/behavior change.
core/ — product API spine
The packages every harness build is assembled from: the session log, the system-prompt assembly, the tool registry, the agent vocabulary, and the one concrete loop that drives them. These are product packages — the stable surface plugins and consumers build against.
| Package | Role | ctx key |
|---|---|---|
session/ |
Event-sourced session log + in-memory store | ctx.sessions |
system-prompt/ |
Prompt-section + tool-schema assembly registry | ctx.systemPrompt |
tools/ |
Tool registry + tools/pre-execute/tools/post-execute pipeline |
ctx.tools |
agent/ |
Agent interface, registry, agent/* event vocabulary |
ctx.agents |
agent-loop/ |
The concrete loop plugin: ReactLoopAgent + the loop driver |
ctx.agentLoop |
agent-core/ |
Bundle plugin: the providerless/executor-less/UI-less spine as code | (loads the spine) |
agent-loop is the one concrete implementation of the agent seam and lives here because it is the harness's default product loop; everything else in core/ is interface/vocabulary. Plugins depend on the agent vocabulary, never on agent-loop directly, so the loop stays swappable.
agent-core is the composition counterpart: one bundle plugin that loads the whole providerless spine (timer + llm + sessions + system-prompt + tools + agents + invariants + tool-bash + agent-loop) and forwards agent-loop's agents list as its own config. App packages (ui/stdio-agent, ui/acp-agent) consume it and add only a front door; a leaf adds the swappable backends plus any optional product tools it wants to expose. It lives in core/ because it composes exclusively core/ + interface packages and ships no provider, executor, or UI of its own.