feat: open local runtime clients from the composer

Add composer shortcuts for local Continue and OpenCode terminals and the official DeepSeek Harness Web client, using the current project and model bridge. Manage browser service reuse, stop actions and terminal cleanup. Upgrade DeepSeek Harness to 0.1.7-rc.2 and Cordis to 4.0.4.

Include the coordinated IPC handler extraction and related tests and documentation. Remote native-client coordinator wiring, managed Node consolidation, Ask MCP mappings and full desktop/package acceptance remain unfinished; this commit records the implemented local workflow and supporting SSH groundwork.

Validation: typecheck and lint passed; 267 focused tests passed and 5 skipped. No new real-provider calls were made for this commit. Prior real-model evidence and remaining acceptance work are documented in the feature progress files.

Release note: 本地项目选择 Continue 或 OpenCode 后，可从输入框下方打开原生终端；选择 DS 后，可打开使用当前项目和模型的官方 Web 客户端。客户端使用独立会话，DS 网页关闭后服务继续运行，可在 GoodBuddy 中停止；远程入口尚未完成。

docs/features/assistant-workbar/progress.md

@@ -1,5 +1,75 @@
 # 工作栏实现与验证进度
 
+## 2026-09-27 Local Native Client Validation
+
+Scope: [native client proposal](./runtime-native-client-proposal.md), FR-2/3/5/6/7/8,
+US-2/4/5/6/8, local portions of P1/P2/P3/P5. Source baseline:
+`55efca3ee1d8a491c4d9709888e302188cd988bd` plus the concurrent working tree.
+
+- Fixed the coordinator's browser-open failure path: a ready DS service and its
+  gateway remain available for owner-scoped reopen/stop. Startup failures still
+  release their gateway. Focused regressions cover current credentials, work mode,
+  Node selection, concurrent open, owner isolation and retry.
+  The DS service also includes the coordinator configuration key in its own match
+  hash; updated skill digests or launch settings cannot reuse an older instance.
+- DS Ask now maps built-in gateway read grants to the official MCP tool names.
+  Custom MCP remains Execute-only, following existing Runtime behavior. The real
+  DS process test loads an assigned directory containing `SKILL.md`, rather than
+  only a synthetic loose Markdown skill file.
+- Custom standard Node uses the current local tool environment selection without
+  a separate npm install. The managed Node fallback still has a bespoke pinned npm
+  install and remains a delivery gap; it was not exercised by this real-model run.
+- The opt-in IPC integration test uses the production action component, preload
+  methods, registered handlers, saved project/model stores, coordinator, official
+  DS Web process, and real Continue/OpenCode PTYs. Electron transport is simulated
+  by the existing IPC test harness and the action component runs in jsdom; this is
+  not a full desktop-window or packaged-app acceptance result. DS Web itself was
+  driven in real headless Edge. The hook retains credentials only in process
+  memory; the temporary settings file stores opaque test-cipher identifiers.
+
+| Client | Configured Model | Supplier HTTP Dispatches | Result |
+| --- | --- | ---: | --- |
+| DS Web 0.1.7-rc.2 | `deepseek-flash` | 2 | Workspace/model selected automatically; Web displayed `NATIVE_WEB_OK` |
+| Continue 1.5.47 | `gpt-6-astra` | 4 | Two prompts and two title requests; second transcript confirms the assistant response, with underscores consumed by Markdown rendering |
+| OpenCode 1.18.29 | `gpt-6-astra` | 1 | Native TUI displayed `NATIVE_OPENCODE_OK`; supplier response also contains it |
+| Total | | 7 | All HTTP 200; no further dispatches needed |
+
+The first terminal assertion matched echoed prompt text and was rejected as
+evidence. The second prompt did not contain the expected joined answer. The
+OpenCode probe waits for the rendered TUI and uses bracketed paste before Enter.
+The initial six-dispatch bound was increased to eight to cover the remaining
+OpenCode path; seven were used in total. The host environment supplied
+`NODE_TLS_REJECT_UNAUTHORIZED=0`, so this run does not verify strict TLS.
+
+Evidence under the approved temporary `opencode/dsh-017-verify` directory:
+`native-live-evidence.json`, `native-main-result.json`, `native-web.png`, and
+`native-{continue,opencode}-terminal.txt`. `native-live-run.cjs` composes the existing
+encrypted settings snapshot/safeStorage bootstrap with the production IPC test.
+Original `runtime-settings.json` remained byte-identical. The final test verifies
+DS stop/reopen/owner isolation and failed fetch after stop, closes both terminal
+sessions, and removes its temporary workspace/configuration. Owned live client
+processes were absent after completion.
+
+Checks: official DS/coordinator focused tests passed (12) under standard Node 24.19.0;
+the opt-in UI/preload/IPC test passed both without provider calls and with the live
+hooks. Four installed Continue/OpenCode Ask/Execute tests passed with real clients
+and deterministic supplier responses; these made zero external supplier calls.
+Repository lint and Agent/Renderer TypeScript checks passed. Main typecheck is
+currently blocked by concurrent SSH
+test doubles missing `forwardLoopback`; no local native-client type errors remain.
+The full `npm test` run finished with 5,285 passed, 79 skipped and one failure:
+the desktop runtime-hook fixture lacked the new DS Web package tree. The fixture
+was corrected and all 44 build-release tests then passed in a focused rerun. The
+full run began before the final configuration-key regression and fixture updates;
+the final DS/coordinator and UI/preload/IPC paths were rerun separately and passed.
+This is not a claim of a subsequent all-green full-suite run. Full output is in
+`native-full-tests.log` beside the live evidence.
+
+Remaining: remote coordinator wiring and real Host acceptance belong to the
+concurrent remote implementation; Continue/OpenCode Ask built-in MCP mappings,
+managed standard Node distribution, full Electron/packaged UI acceptance and other
+platforms are not verified here. `ipc.ts` was not edited in this work.
+
 ## 2026-09-26 结构升级与历史回收分离（未发布）
 
 - schema 45／46 的回归先复现普通结构升级执行 `VACUUM`，修复后不转换历史、