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Tianyi Cui 066f94c7e0 docs: unwrap hard-wrapped Markdown to one line per paragraph

Hard line breaks mid-paragraph make docs harder to edit and diff — a
one-word change reflows and re-diffs the whole paragraph. Reflow all
tracked non-vendor Markdown (plus vendor/AGENTS.md) so each prose
paragraph is a single line; soft-wrapping is the editor's job. Fenced
code, tables, and list structure are preserved (wrapped list items fold
to one line per bullet). Documents the convention in AGENTS.md.

2026-06-13 20:27:04 +08:00

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dsh-system-prompt

System prompt assembly registry. Plugins contribute ordered text sections and tool-schema providers; the agent loop calls assemble() once per step.

Service: `SystemPrompt` (ctx key: `systemPrompt`)

Public API

ctx.systemPrompt.section(section: PromptSection): () => void Contribute a section. Disposed with the calling fiber.
ctx.systemPrompt.tools(provider: () => ToolSchema[]): () => void Contribute tool schemas (evaluated at each assembly). Disposed with the calling fiber.
ctx.systemPrompt.assemble(): Promise<PromptAssembly> Assemble the current prompt. Runs through the system-prompt/assemble waterfall.

Events

Event	Mode	Purpose
`system-prompt/assemble`	waterfall	Mutate/extend the assembly before it reaches the model
`system-prompt/change`	emit	A section or tool provider was registered or unregistered

Key types

PromptSection — { name, order, text: string | (() => string) }. Sections are concatenated in ascending order.
PromptAssembly — { sections: PromptSection[], tools: ToolSchema[] }. Tool schemas are part of the assembly by design: "what the model is told it can do" is one coherent thing, even though adapters transmit schemas as a separate wire field.
renderPrompt(assembly) — joins section texts with blank lines.

Merge-extensible: plugins can declare extra fields on PromptAssembly via declaration merging.

Extension points

Section providers: AGENTS.md reader, cwd notifier, persona config, etc.
Tool schema providers: ToolRegistry registers itself as a tool provider automatically.
The system-prompt/assemble waterfall: mutate or replace the assembly (system-prompt configurability, dynamic tool filtering).

What is NOT here

Any hardcoded prompt text — every section comes from plugins.
Prompt compaction (belongs on the agent/request seam in dsh-agent).

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