Tianyi Cui
da1d7f281d
The write-diff-card fix made write's presentResult return an args-derived whole-file diff (oldText:null) for a create / unchanged overwrite, but the DiffResultView contract and its mirrored docs still said `diffs` is ALWAYS the applied contextual hunks computed from before/after. Correct the type JSDoc, the write execute-side comment, and the four mirrored surfaces (tools.md, tools README, acp-feature-support, adding-a-tool cookbook) to say: typically the applied hunks, or a whole-file diff when there is no before-image (a create) — and that a mutation returns the diff result even when it duplicates the call-time card, since a tool_call_update.content replace would otherwise clobber the diff with the model-facing text. Regenerate the cordis catalog (source line shift).
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/execute waterfall |
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.