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+# Cell Toolbar Actions v3 — 实现计划
+
+> **For agentic workers:** REQUIRED SUB-SKILL: superpowers:subagent-driven-development or superpowers:executing-plans. Steps use checkbox (`- [ ]`) syntax.
+
+**Goal:** 把 4 个 server 连接字段(URL/User/Password/Timeout)从 JupyterLab Settings 移到启动环境变量;Settings 只剩 `opencodeProvider`/`opencodeModel`;在 inline 输入框增加模型选择器。
+
+**Architecture:** `config.py` 4 字段全走 `os.environ.get(ENV) or DEFAULT`(不再 `bridge.get(...)` 兜底);`schema/plugin.json` 删 4 个 property;`src/types.ts` `OpenCodeSettings` 缩为 `{opencodeProvider, opencodeModel}`;前端 `index.ts` 把 `callOpenCodeProviders` 结果通过 `setOpenCodeProviders` 写到 `opencode_cell_actions.ts` 模块级缓存;`OpenCodeInlinePrompt` 加 `providers/defaultProviderId/defaultModelId` 构造参数,渲染 `<select>`,`onSubmit(text, providerId, modelId)` 带选中的 provider/model;`OpenCodeCellActions` 用它覆盖 `OpenCodeRequest` 的 `providerId`/`modelId`。
+
+**Tech Stack:** TypeScript / Python 3.12 / jest / pytest-jupyter / stylelint / prettier
+
+**Spec:** `docs/superpowers/specs/2026-07-23-cell-toolbar-actions-v3-design.md`(已批准)
+
+## Global Constraints
+
+- `schema/plugin.json` **只**删 `opencodeServerUrl` / `opencodeServerUser` / `opencodeServerPassword` / `requestTimeoutSeconds` 4 个 property;`opencodeProvider` / `opencodeModel` 保留。
+- `src/types.ts` `OpenCodeSettings` 缩为 `{ opencodeProvider: string; opencodeModel: string }`,`DEFAULT_OPENCODE_SETTINGS` 同步;`readOpenCodeSettings` 同步(其余字段不再读)。
+- `opencode_bridge/config.py` 新增 `ENV_TIMEOUT = "OPENCODE_BRIDGE_TIMEOUT"` 与 `DEFAULT_REQUEST_TIMEOUT = 120`;`resolve_config` 4 个字段(`url`/`user`/`password`/`request_timeout_seconds`)全走 env+default,**不再** `bridge.get(...)`。
+- 模型选择器 value 格式: `providerId|modelId`(`|` 分隔,`split("|", 2)` 解析)。
+- 默认选中: 若 settings 的 `opencodeProvider`/`opencodeModel` 能在 providers 列表里找到对应项 → 选中它;否则选中第一项;若 providers 为 `null`/空 → 不渲染 select。
+- Providers 缓存模块级: `let _providers: OpenCodeProvidersResponse | null = null; export function setOpenCodeProviders(p) { _providers = p; }` 放在 `opencode_cell_actions.ts`(`setOpenCodeRuntime` 同文件),`index.ts` 在 `callOpenCodeProviders(...).then(...)` 里调。
+- 工具栏 item 名 `opencode-cell-actions` / rank 100 不变。
+- 不发 `mode` 字段(v2 约束保持)。
+- 代码风格 / 单测 / CSS 约束同前。
+
+---
+
+### Task 1: 4 字段移出 settings(server config + types + schema)
+
+**Files:**
+- Modify: `schema/plugin.json`
+- Modify: `src/types.ts`
+- Modify: `opencode_bridge/config.py`
+- (可能)Modify: `src/__tests__/opencode_client.spec.ts`(若它引用了被删的 settings 字段)
+
+**Interfaces:**
+- Consumes: 无新依赖。
+- Produces: `OpenCodeSettings = { opencodeProvider: string; opencodeModel: string }`;`resolve_config({})` 在 4 个 env 变量未设时返回全默认;`schema/plugin.json` `properties` 只剩 `opencodeProvider`/`opencodeModel`。
+
+- [ ] **Step 1: 改 `src/types.ts`**
+
+把当前 `OpenCodeSettings` / `DEFAULT_OPENCODE_SETTINGS` / `readOpenCodeSettings` 改为:
+
+```ts
+/** Frontend view of the 2 remaining schema/plugin.json fields. */
+export interface OpenCodeSettings {
+  opencodeProvider: string;
+  opencodeModel: string;
+}
+
+export const DEFAULT_OPENCODE_SETTINGS: OpenCodeSettings = {
+  opencodeProvider: '',
+  opencodeModel: ''
+};
+
+export function readOpenCodeSettings(composite: unknown): OpenCodeSettings {
+  const c = (composite ?? {}) as Partial<OpenCodeSettings>;
+  return {
+    opencodeProvider: c.opencodeProvider || '',
+    opencodeModel: c.opencodeModel || ''
+  };
+}
+```
+
+- [ ] **Step 2: 改 `schema/plugin.json`**
+
+从 `properties` 中**删除** 4 个:
+- `opencodeServerUrl`
+- `opencodeServerUser`
+- `opencodeServerPassword`
+- `requestTimeoutSeconds`
+
+保留 `opencodeProvider` / `opencodeModel`。可更新它们的 `description` 注明 "Used as default selection in the inline model picker"。
+
+- [ ] **Step 3: 改 `opencode_bridge/config.py`**
+
+完整新内容:
+
+```python
+"""Configuration resolution for the opencode-bridge extension.
+
+All connection fields (URL / user / password / request timeout) are resolved
+exclusively from environment variables + built-in defaults at server startup.
+They are NOT stored in the JupyterLab plugin settings.
+
+Env vars:
+  OPENCODE_BRIDGE_URL       — OpenCode Serve base URL (default http://127.0.0.1:4096)
+  OPENCODE_BRIDGE_USER      — HTTP Basic Auth username (default 'opencode')
+  OPENCODE_BRIDGE_PASSWORD  — HTTP Basic Auth password (default '' = no auth)
+  OPENCODE_BRIDGE_TIMEOUT   — request timeout in seconds (default 120)
+"""
+from __future__ import annotations
+
+import os
+from typing import NamedTuple, Optional, Tuple
+
+
+ENV_URL = "OPENCODE_BRIDGE_URL"
+ENV_USER = "OPENCODE_BRIDGE_USER"
+ENV_PASSWORD = "OPENCODE_BRIDGE_PASSWORD"
+ENV_TIMEOUT = "OPENCODE_BRIDGE_TIMEOUT"
+
+DEFAULT_URL = "http://127.0.0.1:4096"
+DEFAULT_USER = "opencode"
+DEFAULT_REQUEST_TIMEOUT = 120
+
+
+class OpenCodeConfig(NamedTuple):
+    url: str
+    user: str
+    password: str
+    request_timeout_seconds: int
+
+    @property
+    def auth(self) -> Optional[Tuple[str, str]]:
+        """Return (user, password) for HTTP Basic Auth, or None if no password set."""
+        if not self.password:
+            return None
+        return (self.user, self.password)
+
+
+def resolve_config(jupyter_settings: dict) -> OpenCodeConfig:
+    """Resolve OpenCode connection config from environment variables + defaults.
+
+    The `jupyter_settings` argument is accepted for API compatibility but no
+    fields are read from it — all connection config is now startup-only
+    (environment variables).
+    """
+    _ = jupyter_settings  # intentionally unused; see module docstring
+    return OpenCodeConfig(
+        url=os.environ.get(ENV_URL) or DEFAULT_URL,
+        user=os.environ.get(ENV_USER) or DEFAULT_USER,
+        password=os.environ.get(ENV_PASSWORD) or "",
+        request_timeout_seconds=int(
+            os.environ.get(ENV_TIMEOUT) or DEFAULT_REQUEST_TIMEOUT
+        )
+    )
+```
+
+- [ ] **Step 4: 检查 `opencode_client.spec.ts`**
+
+`grep -n "opencodeServerUrl\|opencodeServerUser\|opencodeServerPassword\|requestTimeoutSeconds" src/__tests__/opencode_client.spec.ts` —— 若有引用,删除。`opencode_bridge.spec.ts` 的 `readOpenCodeSettings` 测试只覆盖 provider/model,不受影响。
+
+- [ ] **Step 5: 跑测试 + build**
+
+```bash
+.venv/bin/python -m pytest opencode_bridge/tests/ -q
+YARN_NODE_LINKER=node-modules PATH="$PWD/.venv/bin:$PATH" .venv/bin/jlpm test
+YARN_NODE_LINKER=node-modules PATH="$PWD/.venv/bin:$PATH" .venv/bin/jlpm build
+```
+Expected: pytest 全过(32 passed);jest 全过(25+);build 成功。
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add schema/plugin.json src/types.ts opencode_bridge/config.py src/__tests__/opencode_client.spec.ts
+git commit -m "refactor: move server connection config to startup env vars
+
+URL, user, password, and request timeout are no longer in the JupyterLab
+plugin settings — they are resolved exclusively from environment variables
+(OPENCODE_BRIDGE_URL/USER/PASSWORD/TIMEOUT) at jupyter server startup,
+with built-in defaults. The Settings Editor now only carries
+opencodeProvider/opencodeModel (the defaults for the new inline model
+picker, added in the next commit)."
+```
+
+---
+
+### Task 2: 模型选择器(TDD)
+
+**Files:**
+- Modify: `src/components/opencode_cell_actions.ts`(加 providers 缓存 + 注入)
+- Modify: `src/components/opencode_inline_prompt.ts`(加 select + onSubmit 带 provider/model)
+- Modify: `src/index.ts`(`callOpenCodeProviders` 成功后调 `setOpenCodeProviders`)
+- Modify: `style/base.css`(select 样式)
+- Modify: `src/__tests__/opencode_cell_actions.spec.ts`(补 select 相关断言)
+
+**Interfaces:**
+- Consumes: `OpenCodeProvidersResponse`(从 `../types`);`OpenCodeSettings` 缩为 2 字段。
+- Produces: `setOpenCodeProviders(p: OpenCodeProvidersResponse | null): void`(在 `opencode_cell_actions.ts`);`OpenCodeInlinePrompt` 构造 options 加 `providers`/`defaultProviderId?`/`defaultModelId?`,`onSubmit` 签名变 `(text: string, providerId?: string, modelId?: string) => void`;`OpenCodeCellActions` 用 prompt 回调里的 provider/model 覆盖 `OpenCodeRequest.providerId`/`modelId`。
+
+- [ ] **Step 1: 改 `opencode_cell_actions.ts` —— 扩导出与新签名**
+
+在模块顶部 `setOpenCodeRuntime` 后加:
+
+```ts
+let _providers: OpenCodeProvidersResponse | null = null;
+
+export function setOpenCodeProviders(
+  p: OpenCodeProvidersResponse | null
+): void {
+  _providers = p;
+}
+```
+
+在 `opencode_cell_actions.ts` 顶部 import:
+```ts
+import type { OpenCodeProvidersResponse } from '../types';
+```
+
+把 `_showPrompt` 改为:
+
+```ts
+  private _showPrompt(): void {
+    if (this._prompt) {
+      return;
+    }
+    const defaultProviderId = _settings?.opencodeProvider || undefined;
+    const defaultModelId = _settings?.opencodeModel || undefined;
+    const prompt = new OpenCodeInlinePrompt(this._cell, {
+      disabled: !this._context || this._status === 'loading',
+      providers: _providers,
+      defaultProviderId,
+      defaultModelId,
+      onSubmit: (text: string, providerId?: string, modelId?: string) => {
+        void this._onSubmit(text, providerId, modelId);
+      },
+      onCancel: () => {
+        this._hidePrompt();
+      }
+    });
+    Widget.attach(prompt, this._cell.node);
+    this._prompt = prompt;
+  }
+```
+
+把 `_onSubmit` 改为(签名加 provider/model 入参,用它们覆盖 settings):
+
+```ts
+  private async _onSubmit(
+    text: string,
+    providerIdOverride?: string,
+    modelIdOverride?: string
+  ): Promise<void> {
+    if (!this._context) {
+      return;
+    }
+    if (!_settings || !_serverSettings) {
+      Notification.error('OpenCode 运行时未初始化,请检查 settings');
+      return;
+    }
+
+    // Per-request selection from the inline picker takes precedence over
+    // settings defaults; empty strings from the picker are treated as
+    // "use whatever the server default is" (not sent).
+    const providerId =
+      providerIdOverride || _settings.opencodeProvider || undefined;
+    const modelId = modelIdOverride || _settings.opencodeModel || undefined;
+
+    const request: OpenCodeRequest = {
+      prompt: text,
+      context: this._context,
+      providerId,
+      modelId
+    };
+    // ...rest unchanged (status, callOpenCodeEdit, error handling)
+```
+
+- [ ] **Step 2: 改 `opencode_inline_prompt.ts` —— 加 select + 新 onSubmit 签名**
+
+完整新内容:
+
+```ts
+/**
+ * Inline prompt widget attached to a cell's DOM when the AI button is clicked.
+ * Renders a model selector, a textarea, and send/cancel buttons. The owning
+ * cell is passed so we can resolve the cell context at submit time. submit
+ * and cancel are callbacks owned by OpenCodeCellActions.
+ */
+import { CodeCell } from '@jupyterlab/cells';
+import { Widget } from '@lumino/widgets';
+
+import type { OpenCodeProvidersResponse } from '../types';
+
+export interface IOpenCodeInlinePromptOptions {
+  onSubmit: (text: string, providerId?: string, modelId?: string) => void;
+  onCancel: () => void;
+  disabled: boolean;
+  providers: OpenCodeProvidersResponse | null;
+  defaultProviderId?: string;
+  defaultModelId?: string;
+}
+
+export class OpenCodeInlinePrompt extends Widget {
+  private _textarea: HTMLTextAreaElement;
+  private _sendBtn: HTMLButtonElement;
+  private _cancelBtn: HTMLButtonElement;
+  private _select: HTMLSelectElement | null = null;
+
+  constructor(
+    private _cell: CodeCell,
+    options: IOpenCodeInlinePromptOptions
+  ) {
+    super();
+    this.addClass('opencode-inline-prompt');
+
+    // Model selector — only rendered if providers is a non-empty list.
+    const flat = flattenProviders(options.providers);
+    if (flat.length > 0) {
+      this._select = document.createElement('select');
+      this._select.className = 'opencode-model-select';
+      for (const opt of flat) {
+        const o = document.createElement('option');
+        o.value = `${opt.providerId}|${opt.modelId}`;
+        o.textContent = `${opt.providerId} / ${opt.modelId}`;
+        this._select.appendChild(o);
+      }
+      // Default selection: match settings, otherwise first option.
+      const desired = `${options.defaultProviderId || ''}|${
+        options.defaultModelId || ''
+      }`;
+      const hasDefault = Array.from(this._select.options).some(
+        o => o.value === desired
+      );
+      this._select.value = hasDefault
+        ? desired
+        : this._select.options[0].value;
+    }
+
+    this._textarea = document.createElement('textarea');
+    this._textarea.placeholder = '向 AI 描述你想要的修改…';
+    this._textarea.rows = 3;
+    this._sendBtn = document.createElement('button');
+    this._sendBtn.className = 'opencode-btn-send';
+    this._sendBtn.textContent = '🚀 发送';
+    this._sendBtn.disabled = options.disabled;
+    this._sendBtn.addEventListener('click', () => {
+      const text = this._textarea.value;
+      if (!text.trim()) {
+        return;
+      }
+      const [providerId, modelId] = this._readSelection();
+      options.onSubmit(text, providerId, modelId);
+    });
+    this._cancelBtn = document.createElement('button');
+    this._cancelBtn.className = 'opencode-btn-cancel';
+    this._cancelBtn.textContent = '✕ 取消';
+    this._cancelBtn.addEventListener('click', () => {
+      options.onCancel();
+    });
+
+    const actions = document.createElement('div');
+    actions.className = 'opencode-inline-actions';
+    actions.appendChild(this._sendBtn);
+    actions.appendChild(this._cancelBtn);
+
+    if (this._select) {
+      const label = document.createElement('label');
+      label.className = 'opencode-model-label';
+      const span = document.createElement('span');
+      span.textContent = '模型:';
+      label.appendChild(span);
+      label.appendChild(this._select);
+      this.node.appendChild(label);
+    }
+    this.node.appendChild(this._textarea);
+    this.node.appendChild(actions);
+  }
+
+  setDisabled(disabled: boolean): void {
+    this._sendBtn.disabled = disabled;
+    if (this._select) {
+      this._select.disabled = disabled;
+    }
+  }
+
+  private _readSelection(): [string | undefined, string | undefined] {
+    if (!this._select) {
+      return [undefined, undefined];
+    }
+    const v = this._select.value;
+    const idx = v.indexOf('|');
+    if (idx < 0) {
+      return [undefined, undefined];
+    }
+    return [v.slice(0, idx), v.slice(idx + 1)];
+  }
+}
+
+function flattenProviders(
+  providers: OpenCodeProvidersResponse | null
+): { providerId: string; modelId: string }[] {
+  if (!providers || !providers.providers) {
+    return [];
+  }
+  const out: { providerId: string; modelId: string }[] = [];
+  for (const p of providers.providers) {
+    for (const m of p.models) {
+      out.push({ providerId: p.id, modelId: m.id });
+    }
+  }
+  return out;
+}
+```
+
+- [ ] **Step 3: 改 `src/index.ts` —— fetch 成功后写缓存**
+
+在 `callOpenCodeProviders(...).then(data => { ... console.log(...) }).catch(...)` 的 `.then` 回调里,**在打印日志之前**加:
+
+```ts
+            .then(data => {
+              setOpenCodeProviders(data);
+              const lines: string[] = ['[opencode_bridge] Available OpenCode providers:'];
+              // ...rest unchanged
+            })
+```
+
+import 同步加 `import { setOpenCodeProviders } from './components/opencode_cell_actions';`(在已有的 import 行加)。
+
+- [ ] **Step 4: 改 `style/base.css` —— 加 select 样式**
+
+在 `.opencode-inline-prompt textarea` 之前加:
+
+```css
+.opencode-inline-prompt .opencode-model-label {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  font-size: var(--jp-ui-font-size1);
+  color: var(--jp-ui-font-color1, #333);
+}
+
+.opencode-inline-prompt .opencode-model-select {
+  flex: 1;
+  padding: 2px 4px;
+  font-size: var(--jp-ui-font-size1);
+  font-family: inherit;
+  border: 1px solid var(--jp-border-color2, #ccc);
+  border-radius: 3px;
+  background: var(--jp-layout-color1, #fff);
+}
+
+.opencode-inline-prompt .opencode-model-select:disabled {
+  opacity: 0.5;
+  cursor: default;
+}
+```
+
+- [ ] **Step 5: 补单测 —— `opencode_cell_actions.spec.ts`**
+
+在 `OpenCodeCellActions` 的现有 `it('clicking the button attaches an OpenCodeInlinePrompt to the cell', ...)` 之后,新增以下测试(在同一个 `describe` 内):
+
+```ts
+it('renders a model selector when providers are cached', () => {
+  setOpenCodeProviders({
+    providers: [
+      { id: 'anthropic', models: [{ id: 'claude-sonnet-4-20250514' }] },
+      { id: 'openai', models: [{ id: 'gpt-5' }] }
+    ]
+  });
+  const cell = makeFakeCell('x = 1');
+  const actions = new OpenCodeCellActions(cell);
+  Object.defineProperty(actions, 'parent', { value: cell, configurable: true });
+  (actions as any).onAfterAttach({} as any);
+
+  const btn = actions.node.querySelector('button') as HTMLButtonElement;
+  btn.click();
+
+  const select = cell.node.querySelector(
+    '.opencode-inline-prompt .opencode-model-select'
+  ) as HTMLSelectElement;
+  expect(select).not.toBeNull();
+  expect(select.options.length).toBe(2);
+  expect(select.options[0].textContent).toBe('anthropic / claude-sonnet-4-20250514');
+  expect(select.options[1].textContent).toBe('openai / gpt-5');
+  // Default = first option when no settings match.
+  expect(select.value).toBe('anthropic|claude-sonnet-4-20250514');
+});
+
+it('selects the settings default provider/model when it matches an option', () => {
+  setOpenCodeProviders({
+    providers: [
+      { id: 'anthropic', models: [{ id: 'claude-sonnet-4-20250514' }] },
+      { id: 'openai', models: [{ id: 'gpt-5' }] }
+    ]
+  });
+  setOpenCodeRuntime({
+    settings: {
+      opencodeProvider: 'openai',
+      opencodeModel: 'gpt-5'
+    } as any,
+    serverSettings: {} as any
+  });
+  const cell = makeFakeCell('x = 1');
+  const actions = new OpenCodeCellActions(cell);
+  Object.defineProperty(actions, 'parent', { value: cell, configurable: true });
+  (actions as any).onAfterAttach({} as any);
+
+  const btn = actions.node.querySelector('button') as HTMLButtonElement;
+  btn.click();
+
+  const select = cell.node.querySelector(
+    '.opencode-inline-prompt .opencode-model-select'
+  ) as HTMLSelectElement;
+  expect(select.value).toBe('openai|gpt-5');
+});
+
+it('does not render the selector when providers are not cached', () => {
+  setOpenCodeProviders(null);
+  setOpenCodeRuntime({ settings: {} as any, serverSettings: {} as any });
+  const cell = makeFakeCell('x = 1');
+  const actions = new OpenCodeCellActions(cell);
+  Object.defineProperty(actions, 'parent', { value: cell, configurable: true });
+  (actions as any).onAfterAttach({} as any);
+
+  const btn = actions.node.querySelector('button') as HTMLButtonElement;
+  btn.click();
+
+  const select = cell.node.querySelector(
+    '.opencode-inline-prompt .opencode-model-select'
+  );
+  expect(select).toBeNull();
+});
+```
+
+并在 `describe` 顶部 import 加上:
+
+```ts
+import {
+  OpenCodeCellActions,
+  setOpenCodeProviders,
+  setOpenCodeRuntime
+} from '../components/opencode_cell_actions';
+```
+
+每个测试**结束后**调用 `setOpenCodeProviders(null)` 重置,避免污染其他测试。建议在每个测试的 `expect(...)` 之后加 `setOpenCodeProviders(null);` 一行清理。
+
+- [ ] **Step 6: 跑测试 + build**
+
+```bash
+YARN_NODE_LINKER=node-modules PATH="$PWD/.venv/bin:$PATH" .venv/bin/jlpm test
+YARN_NODE_LINKER=node-modules PATH="$PWD/.venv/bin:$PATH" .venv/bin/jlpm build
+```
+Expected: jest 28+ passed(原 25 + 3 新增);build 成功。
+
+- [ ] **Step 7: Commit**
+
+```bash
+git add src/components/opencode_cell_actions.ts src/components/opencode_inline_prompt.ts src/index.ts style/base.css src/__tests__/opencode_cell_actions.spec.ts
+git commit -m "feat: model selector in inline prompt
+
+The inline prompt panel now renders a <select> at the top, listing every
+(provider, model) pair returned by GET /opencode-bridge/providers at
+plugin activation. The default selection matches opencodeProvider /
+opencodeModel from JupyterLab settings; the user can pick a different
+model per request. The chosen value is sent as providerId/modelId in
+the OpenCodeRequest, overriding the settings default for that call. If
+the providers fetch failed at startup (e.g. opencode serve not running),
+no selector is rendered and submissions fall back to the settings
+defaults (or omit providerId/modelId so OpenCode picks its own default)."
+```
+
+---
+
+### Task 3: design.md 同步(CC)
+
+**Files:**
+- Modify: `design.md` §2(给 inline 输入框段补一行模型选择器描述);新增 §6 "启动配置"(env 变量清单)。
+
+- [ ] **Step 1: 改 `design.md` §2 item 2 的描述**,在第 2 段里"多行 `textarea`(placeholder ...)"前插一句:
+> 顶部一行 `模型: <select>`(来自 `GET /opencode-bridge/providers` 启动时缓存),默认选中 `opencodeProvider`/`opencodeModel` settings 对应项,用户可改;提交时把选中的 `providerId`/`modelId` 一起带回,覆盖 settings 默认。
+
+- [ ] **Step 2: 新增 §6 "启动配置"**(放在现有 §5 之后,或合并进 §5)
+
+```markdown
+## ⚙️ 6. 启动配置(v3 修正)
+
+所有 OpenCode Serve 连接参数在 `jupyter lab` 启动时通过环境变量指定,**不再**在 JupyterLab Settings Editor 中配置:
+
+| 环境变量 | 默认 | 说明 |
+|---|---|---|
+| `OPENCODE_BRIDGE_URL` | `http://127.0.0.1:4096` | OpenCode Serve 地址 |
+| `OPENCODE_BRIDGE_USER` | `opencode` | HTTP Basic Auth 用户名 |
+| `OPENCODE_BRIDGE_PASSWORD` | `""`(无 auth) | HTTP Basic Auth 密码 |
+| `OPENCODE_BRIDGE_TIMEOUT` | `120` | 请求 OpenCode Serve 超时(秒) |
+
+JupyterLab Settings Editor **只剩** 2 项,均用于 inline 输入框模型选择器的"默认选中":
+- `opencodeProvider`
+- `opencodeModel`
+```
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add design.md
+git commit -m "docs: design.md v3 (startup env config + inline model selector)"
+```
+
+---
+
+### Task 4: 全量验证(CC)
+
+- [ ] **Step 1: 跑 pytest + jlpm test + jlpm build**
+
+```bash
+.venv/bin/python -m pytest opencode_bridge/tests/ -q
+YARN_NODE_LINKER=node-modules PATH="$PWD/.venv/bin:$PATH" .venv/bin/jlpm test
+YARN_NODE_LINKER=node-modules PATH="$PWD/.venv/bin:$PATH" .venv/bin/jlpm build
+```
+Expected: pytest 全过(32+);jest 全过(28+);build 成功。
+
+- [ ] **Step 2: 报告 v3 三个 commit + 验证结果**
+
+---
+
+### Task 5: 手动验收(用户执行)
+
+`export OPENCODE_BRIDGE_URL=http://127.0.0.1:4096 && jupyter lab`(或带 User/Password/Timeout),打开 .ipynb:
+- active cell 右上角单按钮 → inline 面板顶部出现 `模型: [select]`(列出 OpenCode Serve 的 provider/model)
+- 默认选中 `opencodeProvider`/`opencodeModel` settings 值
+- 切换选择 → 发送 → 这次请求的 `providerId`/`modelId` 是选中的
+- 在 Settings Editor 看 `opencodeServerUrl` 等 4 个字段已经没有了
+- 启动时 export 一个错误的 URL / 关掉 OpenCode Serve → 下拉框不出现,提交走 settings 兜底