Merge branch 'worktree-hooks-a-taxonomy' into worktree-hooks-b-bash-seam
# Conflicts: # docs/rfc/README.md
This commit is contained in:
Tianyi Cui
@@ -34,7 +34,7 @@ The owning agent's session token (`session.header.id`) is stamped onto the task
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## UI presentation
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These tools own how their calls render in a UI (an editor's tool-call card) via the `dsh-tools` `presentCall`/`presentResult` seam — a UI never special-cases tool names. For `bash`: the **title** is the exact `command` ("ls -la src") and `kind` is `execute` (terminal/run treatment), matching the reference ACP adapters (claude-agent-acp, codex-acp), which both use the bare command as an execute tool's title. The command is ALSO the **rawInput** for non-terminal UIs that render it (an execute-kind card hides rawInput — Zed shows it only for non-terminal tools — so the command must BE the title to be seen). The model-written `description` rides as a **content** text block shown ABOVE the card. (claude-agent-acp DROPS the description in terminal mode and shows only the card; surfacing it as a content block is a deliberate divergence — we keep the human summary visible alongside the card.) The completed output is wrapped in a fenced ` ```console ` block as the no-terminal-capability fallback — a UI-only affordance, so the model-facing result text stays unfenced. A FOREGROUND `bash` run also flags itself as a **terminal** (the neutral `terminal` field: `presentCall` sets a `cwd` from the model `workdir` when given — absolute as-is, relative for the UI bridge to resolve against the session cwd — else leaves it for the bridge to fill from the session cwd; `presentResult` carries the raw output plus the parsed `exitCode`/`signal`) so a capable client (Zed) renders a terminal card with an exit-status pill instead of the text block — see `packages/ui/acp` ("Terminal card"). A `run_in_background` call is NOT a terminal (it returns a task id immediately and never streams a terminal — poll with `bash_output`), and an `isError` result (spawn failure / abort) carries no exit pill (there is no real process exit); both render as the ordinary execute card / fenced text. `bash_output`/`bash_kill` present a task-scoped title ("Read output from background task bash-3" / "Kill background task bash-3") with the task id as rawInput. These methods are pure/display-only (they also run on `session/load` replay), and a malformed/older logged arg shape falls back to a generic presentation rather than throwing. See `packages/core/tools` ("Tool-owned UI presentation") and `packages/ui/acp` ("Terminal card" / "Tool-call presentation").
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These tools own how their calls render in a UI (an editor's tool-call card) via the `dsh-tools` `presentCall`/`presentResult` seam, each returning a `card`-tagged render intent — a UI never special-cases tool names. A FOREGROUND `bash` run declares a **terminal card**: `presentCall` returns `{ card: 'terminal', title, description?, cwd? }` — the **title** is the exact `command` ("ls -la src"), the model-written `description` rides along (rendered ABOVE the card), and `cwd` comes from the model `workdir` when given (absolute as-is, relative for the UI bridge to resolve against the session cwd; else left for the bridge to fill from the session cwd) — and `presentResult` returns `{ card: 'terminal', title?, output?, exitCode?, signal? }` carrying the raw output plus the parsed `exitCode`/`signal`, so a capable client (Zed) renders a terminal card with an exit-status pill. The result carries the raw `output`; the bridge DERIVES the ` ```console ` fenced fallback for a no-terminal-capability UI (the tool no longer encodes the fences itself), so the model-facing result text stays unfenced. A `run_in_background` call is NOT a terminal (it returns a task id immediately and never streams a terminal — poll with `bash_output`) and instead returns a **generic card** (`{ card: 'generic', title, kind: 'execute', rawInput: command, content: [description] }`); an `isError` result (spawn failure / abort) likewise returns a `generic` result view with no exit pill (there is no real process exit). `bash_output`/`bash_kill` return a `generic` card with a task-scoped title ("Read output from background task bash-3" / "Kill background task bash-3") and the task id as rawInput. These methods are pure/display-only (they also run on `session/load` replay), and a malformed/older logged arg shape falls back to a generic presentation rather than throwing. See `packages/core/tools` ("Tool-owned UI presentation") and `packages/ui/acp` ("Terminal card" / "Tool-call presentation").
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## Background completion notices
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@@ -41,7 +41,7 @@
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import type { Context } from 'cordis'
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import { isAbsolute, resolve as resolvePath } from 'node:path'
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import { defineTool } from '@deepseek-ai/dsh-tools'
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import type { ToolCallPresentation, ToolResult, ToolResultPresentation } from '@deepseek-ai/dsh-tools'
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import type { GenericCallView, TerminalCallView, ToolResult, ToolResultView } from '@deepseek-ai/dsh-tools'
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import type { Agent } from '@deepseek-ai/dsh-agent'
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import { BashTaskId, OwnerToken } from '@deepseek-ai/dsh-bash'
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import type { BashRunResult, BashTask, CollectedOutput } from '@deepseek-ai/dsh-bash'
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@@ -158,16 +158,26 @@ export function renderResult(result: BashRunResult): string {
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*/
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type BashCallArgs = { command: string; description: string; workdir?: string; run_in_background?: boolean }
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function presentBashCall(args: BashCallArgs): ToolCallPresentation {
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const base = {
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title: args.command,
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kind: 'execute' as const,
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rawInput: args.command,
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content: [{ type: 'text' as const, text: args.description }],
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function presentBashCall(args: BashCallArgs): GenericCallView | TerminalCallView {
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// A background start is not an interactive terminal — a generic execute card
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// with the command as rawInput and the description as a content block.
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if (args.run_in_background === true) {
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return {
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card: 'generic',
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title: args.command,
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kind: 'execute',
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rawInput: args.command,
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content: [{ type: 'text', text: args.description }],
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}
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}
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// A foreground run IS a terminal: the command titles the card, the description
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// renders above it, and the cwd (when the model gave a workdir) heads it.
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return {
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card: 'terminal',
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title: args.command,
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description: args.description,
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...args.workdir !== undefined ? { cwd: args.workdir } : {},
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}
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// A background start is not an interactive terminal — no terminal card.
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if (args.run_in_background === true) return base
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return { ...base, terminal: args.workdir !== undefined ? { cwd: args.workdir } : {} }
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}
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/**
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@@ -186,21 +196,25 @@ function presentBashCall(args: BashCallArgs): ToolCallPresentation {
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* task-id ack, not a streamed run) and an `isError` result (a spawn failure or
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* abort — there is no real process exit to pill, and the body is an error
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* message, not `renderResult` output, so parsing it would be meaningless). Those
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* fall back to the fenced `content` block with no terminal metadata. The bridge's
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* orphan guard also drops a result terminal when the call wasn't terminal, so a
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* background call (not marked terminal in `presentBashCall`) is doubly safe.
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* A non-text result (unexpected for bash) falls through to `undefined`.
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* return a `generic` result whose content is the fenced ```console block. A
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* finished foreground run returns a `terminal` result carrying the RAW output
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* and the parsed exit status; the BRIDGE derives the fenced fallback from
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* `output` for a UI without terminal support, so the tool does not double-encode
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* it. A non-text result (unexpected for bash) falls through to `undefined`.
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*/
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function presentBashResult(args: unknown, result: ToolResult): ToolResultPresentation | undefined {
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function presentBashResult(args: unknown, result: ToolResult): ToolResultView | undefined {
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const block = result.content.length === 1 ? result.content[0] : undefined
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if (block === undefined || block.type !== 'text') return undefined
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const raw = block.text
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const fenced = raw.replace(/\n+$/, '')
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const content = [{ type: 'text' as const, text: `\`\`\`console\n${fenced}\n\`\`\`` }]
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const isBackground = typeof args === 'object' && args !== null && (args as { run_in_background?: unknown }).run_in_background === true
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// No exit pill / terminal output for a background ack or an errored run.
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if (isBackground || result.isError) return { content }
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return { content, terminal: { output: raw, ...parseExitStatus(raw) } }
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// A background ack or an errored run is not a real terminal exit: render the
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// fenced ```console fallback as generic content (no exit pill).
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if (isBackground || result.isError) {
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return { card: 'generic', content: [{ type: 'text', text: `\`\`\`console\n${raw.replace(/\n+$/, '')}\n\`\`\`` }] }
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}
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// A finished foreground run: RAW output + parsed exit for the terminal card.
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// The bridge derives the no-capability fenced fallback from `output`.
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return { card: 'terminal', output: raw, ...parseExitStatus(raw) }
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}
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/**
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@@ -237,8 +251,8 @@ function parseExitStatus(text: string): { exitCode: number } | { signal: string
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}
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/** Pending-state presentation for `bash_output`/`bash_kill` (background-task tools). */
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function presentTaskCall(verb: string, args: { task_id: string }): ToolCallPresentation {
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return { title: `${verb} background task ${args.task_id}`, kind: 'execute', rawInput: args.task_id }
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function presentTaskCall(verb: string, args: { task_id: string }): GenericCallView {
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return { card: 'generic', title: `${verb} background task ${args.task_id}`, kind: 'execute', rawInput: args.task_id }
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}
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/**
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@@ -716,45 +716,40 @@ describe('status lines', () => {
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})
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describe('tool-owned UI presentation (presentCall / presentResult)', () => {
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it('bash presentCall: title is the command, description as a content block, marks a terminal; workdir → cwd (absolute or relative, bridge resolves)', async () => {
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it('bash presentCall: a foreground run is a terminal card (command title, description, workdir → cwd absolute or relative)', async () => {
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const ctx = await setup()
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// No explicit workdir → the call still flags a terminal, but with no cwd (the
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// UI bridge fills the session cwd it owns; the pure presenter can't see it).
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// The command is the title (an execute card hides rawInput); the description
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// rides as a content text block (shown above the terminal card).
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// No explicit workdir → a terminal card with no cwd (the UI bridge fills the
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// session cwd it owns; the pure presenter can't see it).
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expect(ctx.tools.get('bash')?.presentCall?.({ command: 'ls -la src', description: 'List files in src' }))
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.toEqual({ title: 'ls -la src', kind: 'execute', rawInput: 'ls -la src', content: [{ type: 'text', text: 'List files in src' }], terminal: {} })
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.toEqual({ card: 'terminal', title: 'ls -la src', description: 'List files in src' })
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// An ABSOLUTE workdir is surfaced verbatim as the terminal cwd header.
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expect(ctx.tools.get('bash')?.presentCall?.({ command: 'pwd', description: 'Print dir', workdir: '/tmp/x' }))
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.toEqual({ title: 'pwd', kind: 'execute', rawInput: 'pwd', content: [{ type: 'text', text: 'Print dir' }], terminal: { cwd: '/tmp/x' } })
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.toEqual({ card: 'terminal', title: 'pwd', description: 'Print dir', cwd: '/tmp/x' })
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// A RELATIVE workdir is passed through AS-IS (the bridge resolves it against
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// the session cwd, matching where execution runs) — not dropped.
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expect(ctx.tools.get('bash')?.presentCall?.({ command: 'pwd', description: 'Print dir', workdir: 'sub' }))
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.toEqual({ title: 'pwd', kind: 'execute', rawInput: 'pwd', content: [{ type: 'text', text: 'Print dir' }], terminal: { cwd: 'sub' } })
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.toEqual({ card: 'terminal', title: 'pwd', description: 'Print dir', cwd: 'sub' })
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})
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it('bash presentResult: console-block content AND terminal.output (RAW newlines) + parsed exit code', async () => {
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it('bash presentResult: a terminal result carries RAW output (newlines intact) + parsed exit code', async () => {
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const ctx = await setup()
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const present = ctx.tools.get('bash')!.presentResult!(
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{ command: 'echo hi', description: 'echo' },
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{ content: [{ type: 'text', text: 'hi\n[exit code: 0]\n\n' }], isError: false },
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)
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// The fenced ```console content trims trailing blank lines for a tidy block;
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// terminal.output keeps the RAW bytes (newlines intact) a terminal renderer
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// needs; exitCode is parsed back from the [exit code: N] marker.
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expect(present).toEqual({
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content: [{ type: 'text', text: '```console\nhi\n[exit code: 0]\n```' }],
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terminal: { output: 'hi\n[exit code: 0]\n\n', exitCode: 0 },
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})
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// A terminal result keeps the RAW bytes (newlines intact) a terminal renderer
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// needs; the bridge derives the fenced fallback. exitCode is parsed back from
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// the [exit code: N] marker.
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expect(present).toEqual({ card: 'terminal', output: 'hi\n[exit code: 0]\n\n', exitCode: 0 })
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})
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it('bash presentResult: a non-zero exit and a signal kill parse into exitCode / signal', async () => {
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const ctx = await setup()
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const args = { command: 'x', description: 'x' }
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const nonzero = ctx.tools.get('bash')!.presentResult!(args, { content: [{ type: 'text', text: 'oops\n[exit code: 3]' }], isError: false })
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expect(nonzero?.terminal).toEqual({ output: 'oops\n[exit code: 3]', exitCode: 3 })
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expect(nonzero).toEqual({ card: 'terminal', output: 'oops\n[exit code: 3]', exitCode: 3 })
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const killed = ctx.tools.get('bash')!.presentResult!(args, { content: [{ type: 'text', text: 'gone\n[killed by signal: SIGKILL]' }], isError: false })
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expect(killed?.terminal).toEqual({ output: 'gone\n[killed by signal: SIGKILL]', signal: 'SIGKILL' })
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expect(killed).toEqual({ card: 'terminal', output: 'gone\n[killed by signal: SIGKILL]', signal: 'SIGKILL' })
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})
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it('bash presentResult exit parse is the inverse of renderResult markers (round-trip)', async () => {
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@@ -779,7 +774,8 @@ describe('tool-owned UI presentation (presentCall / presentResult)', () => {
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for (const c of cases) {
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const rendered = renderResult(c.result)
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const out = present.presentResult!({ command: 'x', description: 'x' }, { content: [{ type: 'text', text: rendered }], isError: false })
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const { output: _o, ...exit } = out?.terminal ?? {}
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// Drop card + output; the remaining fields are the parsed exit.
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const { card: _c, output: _o, ...exit } = out as { card: string; output?: string; exitCode?: number; signal?: string }
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expect(exit).toEqual(c.expect)
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}
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})
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@@ -793,37 +789,35 @@ describe('tool-owned UI presentation (presentCall / presentResult)', () => {
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// the marker (renderResult always inserts one before a REAL marker), so this
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// no-trailing-newline body is NOT mistaken for a failure → exitCode 0.
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const out = ctx.tools.get('bash')!.presentResult!(args, { content: [{ type: 'text', text: '[exit code: 5]' }], isError: false })
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expect(out?.terminal).toEqual({ output: '[exit code: 5]', exitCode: 0 })
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expect(out).toEqual({ card: 'terminal', output: '[exit code: 5]', exitCode: 0 })
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// Same for a fake signal marker with no leading newline.
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const sig = ctx.tools.get('bash')!.presentResult!(args, { content: [{ type: 'text', text: '[killed by signal: SIGKILL]' }], isError: false })
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expect(sig?.terminal).toEqual({ output: '[killed by signal: SIGKILL]', exitCode: 0 })
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expect(sig).toEqual({ card: 'terminal', output: '[killed by signal: SIGKILL]', exitCode: 0 })
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})
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it('bash presentCall/presentResult: a run_in_background call is NOT a terminal and its ack carries no exit pill', async () => {
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it('bash presentCall/presentResult: a run_in_background call is a generic card and its ack carries no exit pill', async () => {
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const ctx = await setup()
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// The background start returns a task-id ack, not a streamed run — no terminal.
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// The background start returns a task-id ack, not a streamed run — a generic
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// execute card with the command as rawInput and the description as content.
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const call = ctx.tools.get('bash')!.presentCall!({ command: 'sleep 100', description: 'wait', run_in_background: true })
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expect(call).toEqual({ title: 'sleep 100', kind: 'execute', rawInput: 'sleep 100', content: [{ type: 'text', text: 'wait' }] })
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expect((call as { terminal?: unknown }).terminal).toBeUndefined()
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// The ack result is fenced text only — no terminal output / exit pill.
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expect(call).toEqual({ card: 'generic', title: 'sleep 100', kind: 'execute', rawInput: 'sleep 100', content: [{ type: 'text', text: 'wait' }] })
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// The ack result is a generic fenced-text card — no terminal output / exit pill.
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const result = ctx.tools.get('bash')!.presentResult!(
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{ command: 'sleep 100', description: 'wait', run_in_background: true },
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{ content: [{ type: 'text', text: 'started background task bash-1' }], isError: false },
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)
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expect(result?.terminal).toBeUndefined()
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expect(result?.content).toEqual([{ type: 'text', text: '```console\nstarted background task bash-1\n```' }])
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expect(result).toEqual({ card: 'generic', content: [{ type: 'text', text: '```console\nstarted background task bash-1\n```' }] })
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})
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it('bash presentResult: an isError result carries no exit pill (no real process exit to report)', async () => {
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it('bash presentResult: an isError result is a generic card (no real process exit to report)', async () => {
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const ctx = await setup()
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// A spawn failure / abort has no process exit — the body is an error message,
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// not renderResult output, so no terminal output/exit is emitted.
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// not renderResult output, so a generic fenced card, no terminal output/exit.
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const out = ctx.tools.get('bash')!.presentResult!(
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{ command: 'x', description: 'x' },
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{ content: [{ type: 'text', text: 'command aborted' }], isError: true },
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)
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expect(out?.terminal).toBeUndefined()
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expect(out?.content).toEqual([{ type: 'text', text: '```console\ncommand aborted\n```' }])
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expect(out).toEqual({ card: 'generic', content: [{ type: 'text', text: '```console\ncommand aborted\n```' }] })
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})
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it('bash presentResult: leaves a non-text (unexpected) result untouched → undefined (UI keeps raw content)', async () => {
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@@ -849,9 +843,9 @@ describe('tool-owned UI presentation (presentCall / presentResult)', () => {
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it('bash_output / bash_kill presentCall: a readable task-scoped title, task id as rawInput', async () => {
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const ctx = await setup()
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expect(ctx.tools.get('bash_output')!.presentCall!({ task_id: 'bash-3' }))
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.toEqual({ title: 'Read output from background task bash-3', kind: 'execute', rawInput: 'bash-3' })
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.toEqual({ card: 'generic', title: 'Read output from background task bash-3', kind: 'execute', rawInput: 'bash-3' })
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expect(ctx.tools.get('bash_kill')!.presentCall!({ task_id: 'bash-3' }))
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.toEqual({ title: 'Kill background task bash-3', kind: 'execute', rawInput: 'bash-3' })
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.toEqual({ card: 'generic', title: 'Kill background task bash-3', kind: 'execute', rawInput: 'bash-3' })
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})
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it('presentCall validates softly: malformed args (missing required description) return undefined, never throw', async () => {
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Reference in New Issue
Block a user