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https://github.com/deepseek-ai/deepseek-harness
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66e9b01fbd
modeFor read only the exact scope's layer, so a `code`-preset session advertised the native catalog: the mode is declared on the preset's STANDING scope, and the agent only parents to it. Nearest scope wins along the chain — the mode decides what the model SEES, which is the class of fact the chain inherits. Caught live (the model politely computed with bash and said run_code was not in its list); the chain test pins it. The client half of the label fix: the create echo and the session-added frame's agentPreset now reach the session list (newest wins in the upsert — every producer of the field reports the CURRENT composition), and a confirmed blank-session switch publishes through the new ISessions.noteAgentPreset, so the header label moves with the composition instead of waiting for a reload.
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.