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Four values complete the vocabulary, so the opaque body is reached only by producers that genuinely promise no shape. `snapshot` — current state a later snapshot supersedes. system-prompt now exposes `renderContextSections()`, the named contributions `renderContextSnapshot()` already joins for the model, so the body attributes each part to the subsystem that produced it instead of re-splitting joined prose. The runtime snapshot, time-context, and tmux-context declare it. `notice` — a one-off account of what just happened, declared by tool-tasks, goal state changes, tool-goal wrap-up, plan-mode switches, and repeat-tool-guard. Its `summary` rides the COLLAPSED row: these five are the majority of shipped producers and none of them needs expanding to be read. The task summary bounds itself because its inputs are unbounded caller text. `relay` — a message another agent addressed to this one; both subagent sources declare it and the body names the sender above what it said. `recall` — material lifted from another session's log. session-reference needed no new field: its references already record retained and omitted counts and the truncation flag, which the body shows first, because recalled context is bounded on the way in. `ContextFormed` is now discriminated by `form`, so a producer cannot declare a shape without the facts that shape is presented from — a notice without its summary, or a snapshot without its sections, fails to compile. Only the two hook bridges stay opaque, by design: their content is whatever an external program printed, so no shape can be promised for it. Unknown kinds and unreadable records land there too.
context/ — request-context extensions
English | 中文
Product plugins that add model-visible request context without defining a tool. workspace-context is included by the default dsh-agent-spine-demo bundle and can be disabled through bundle config; time-context and tmux-context are opt-in, while the standard TUI bundle composes session-reference explicitly.
| Package | Role | ctx key |
|---|---|---|
session-reference/ |
Bounded current-surface snapshots of other sessions | ctx.sessionReferences |
time-context/ |
Durable per-step current time and elapsed-time context | (none) |
tmux-context/ |
Durable per-turn context with this agent's tmux pane/window location | (listens on agent/step, reads ctx.bash) |
workspace-context/ |
AGENTS.md/CLAUDE.md workspace context loader |
(listens on agent/step + tools/post-execute) |
The workspace-context decision record explains its per-agent/session isolation and lifecycle split.