Merge origin/master into feat/plan-mode

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Tianyi Cui
2026-07-20 23:28:07 +08:00
1439 changed files with 63420 additions and 24756 deletions
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# plan-acp-agent
The coding agent as an ACP server with **session modes** composed — the live composition of [the plan-mode RFC](../../docs/rfc/implemented/feature/2026-07-07-plan-mode.md).
The coding agent as an ACP server with **session modes** composed — the live composition of the [plan-mode Agent Note](../../.agents/notes/implemented/feature/2026-07-07-plan-mode.md).
## What it demonstrates
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## Tests
`pnpm run test:snapshot` replays three scenarios keyless (the recorded bash re-executes for real under the host's sandbox runner — Seatbelt on macOS, bwrap on Linux CI). `modes-advertise` (authored): the `modes` advertisement and both config options on `session/new`, both `session/set_mode` round-trips with their optimistic `current_mode_update`, and the loud rejection of an unknown mode id, as committed wire bytes. `plan-mode` (recorded, the header pin): the full arc — setMode(plan), the plan-shaped initial header (full toolset + exit tool + section), a real `cat` run inside plan (under the sandbox's own workspace-write default — the mode does not change it), the plan presented via `exit_plan_mode`, a scripted elicitation approve, the boundary-flushed `mode/set` back with its pure-removal `request/header-delta`, then a real edit mid-turn. `plan-mode-reject` (recorded): the keep-planning branch, whose corrective `isError` carries the reviewer's free-text feedback verbatim and leaves the session in plan mode. The sandbox-denial marker stays pinned at the unit tier (`packages/bash/tool-bash/tests` — a recorded denial's stderr would be the backend's dialect and replay only where it was recorded).
`pnpm run test:snapshot` replays three scenarios keyless (the recorded bash re-executes for real under the host's sandbox runner — Seatbelt on macOS, bwrap on Linux CI). `modes-advertise` (authored): the `modes` advertisement and both config options on `session/new`, both `session/set_mode` round-trips with their optimistic `current_mode_update`, and the loud rejection of an unknown mode id, as committed wire bytes. `plan-mode` (recorded, the header pin): the full arc — setMode(plan), the plan-shaped initial header (full toolset + exit tool + section), a real `cat` run inside plan (under the sandbox's own workspace-write default — the mode does not change it), the plan presented via `exit_plan_mode`, a scripted elicitation approve, the boundary-flushed `mode/set` back with a complete changed `request/header`, then a real edit mid-turn. `plan-mode-reject` (recorded): the keep-planning branch, whose corrective `isError` carries the reviewer's free-text feedback verbatim and leaves the session in plan mode. The sandbox-denial marker stays pinned at the unit tier (`packages/bash/tool-bash/tests` — a recorded denial's stderr would be the backend's dialect and replay only where it was recorded).