fix(web): report a wrapped paste as the same API key format failure

.agents/notes/implemented/bug-fix/2026-08-06-api-key-format-validation.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-08-06-api-key-format-validation.md
-2026-08-06-api-key-format-validation.md: 4666f6197dbed060d00c77fdd6b87842141c10f4
-2026-08-06-api-key-format-validation.zh.md: 75c98bd29cf009e69ceb450432f540e3f49d99d0
+2026-08-06-api-key-format-validation.md: c85d03119565a25abb37a0d32550d46796148134
+2026-08-06-api-key-format-validation.zh.md: 84e5458675995d2454fa4becc5e6466f511c4932

.agents/notes/implemented/bug-fix/2026-08-06-api-key-format-validation.md

@@ -22,7 +22,7 @@ One rule defines a legal key: **after trimming, non-empty, and every character w
 
 This single predicate covers every input the sources list: empty, leading and trailing whitespace, interior whitespace, C0 control characters, emoji, CJK text, and full-width punctuation. It is also exactly the constraint that produced the ByteString failure, so the two issues close on one definition rather than on two coincidentally related fixes.
 
-A second, narrower rule catches a pasted environment line: input matching `^[A-Z][A-Z0-9_]*=` or wrapped in matching quotes is refused. Restricting the prefix to upper-case keeps real keys clear of it — `sk-` forms break the identifier match at the hyphen.
+A second, narrower rule catches a pasted environment line: input matching `^[A-Z][A-Z0-9_]*=[^=]` or wrapped in matching quotes is refused. Restricting the prefix to upper-case keeps real keys clear of it — `sk-` forms break the identifier match at the hyphen — and requiring a non-`=` character after the separator keeps base64 padding clear of it too. It reports the same format failure as an illegal character rather than its own message: the reader's next move is identical either way, so a separate line would name a cause without changing what to do.
 
 ### Invariants belong at every layer; heuristics belong where the human is
 

.agents/notes/implemented/bug-fix/2026-08-06-api-key-format-validation.zh.md

@@ -22,7 +22,7 @@ Status: implemented
 
 这一个断言覆盖了来源列出的全部输入：空值、首尾空白、中间空白、C0 控制字符、emoji、中文、全角标点。它同时正是造成 ByteString 失败的那条约束，所以两个 issue 收敛于同一个定义，而不是两个恰好相关的修复。
 
-第二条更窄的规则用于识别整行粘贴的环境变量：匹配 `^[A-Z][A-Z0-9_]*=` 或首尾成对引号的输入会被拒绝。把前缀限定为全大写可以让真实 Key 与之绝缘——`sk-` 这类形态会在连字符处中断标识符匹配。
+第二条更窄的规则用于识别整行粘贴的环境变量：匹配 `^[A-Z][A-Z0-9_]*=[^=]` 或首尾成对引号的输入会被拒绝。把前缀限定为全大写可以让真实 Key 与之绝缘——`sk-` 这类形态会在连字符处中断标识符匹配——而要求分隔符之后必须是非 `=` 字符，则让 base64 的 padding 也与之绝缘。它报出的是与非法字符相同的那条格式失败，而不是自己的一句：读到它的人下一步动作完全一样，因此单列一句只会点出一个原因，却不改变该怎么做。
 
 ### 不变量属于每一层，启发式属于人所在的那一层
 

packages/client/ui-models/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-models/README.md
-README.md: e3328bb5fd2cf812b05dc26bf534226818132631
-README.zh.md: 20e40cc571a9123b50dfb28565c5562937e03189
+README.md: a9799916a91cb7416765c387b59c9172fa477666
+README.zh.md: e73100fa7d23a4025dffe471615401617a4af811

packages/client/ui-models/README.md

@@ -8,7 +8,7 @@ Rows are the *configured* providers (their profile resolves in the owning namesp
 
 The DeepSeek step projects `deepseek-official` readiness from that same joined snapshot after earlier onboarding pages complete. It recognizes the official adapter through its `llm-deepseek` configurable-provider declaration, so an undeclared live route with the same provider id is not treated as repairable configuration. A configured literal `apiKey` secret sidecar or configured credential reference completes the step without rendering, including a read-only launch-environment credential. Only a mounted, active adapter with a missing writable reference shows the page that opens Settings on Models, whose existing setup card exclusively owns key input and `credentials.set`; the step never holds a secret. An absent adapter, inactive route, failed join, read-only deployment, or unusable settings or credential capability completes the step without rendering so onboarding cannot block the product; Models remains the diagnostic surface.
 
-Every edit lands as `settings.mutate` path ops against the stored section — a set per changed field, an unset per cleared one, and a single unset for a deleted provider row. The page only ever holds the REDACTED descriptor, so it names the fields it can see rather than rebuilding a section: a stored literal secret it never received is mentioned by no op and survives. DeepSeek's `models` is one replace-by-value array: the editor shows inherited effective rows until the first model edit materializes the complete array in the user layer, while reset unsets that override. A row carries the model id and display name; its context window and output cap sit behind the row's own disclosure, the same shape the pi-ai provider form uses. Either capacity is typed as a count with an optional decimal `K` or `M` suffix (`256K`, `1M`; `1M` is 1000K) and stored as the plain count, spelled back in the shortest form that round-trips. Empty ids, duplicate ids, empty explicit names, and unreadable, non-positive, or fractional capacities fail before any write. A typed API key is judged on its own field the same way: after trimming, it must be non-empty and every character must be printable ASCII (`[\x21-\x7E]`), which is exactly what an HTTP header value can carry — the twin of `normalizeApiKey` in `@deepseek-ai/dsh-llm`, mirrored here because the source-plane split forbids importing it. A field holding only whitespace fails rather than being silently dropped, and a value shaped like a pasted `NAME=value` environment line or wrapped in matching quotes fails too; that paste-shape heuristic runs only in the browser, since a false positive in a resolver would leave the environment refusing the key as well. An empty field is not a failure at all: it means keep the stored key on an editor card, and authenticate some other way on a create card. A refused key blocks both the write and the endpoint interrogation, so the page never spends a round trip to be told what the field already says. Each write carries the `revision` the card opened at, so a concurrent write from another tab or an external `settings.yaml` edit is refused as `settings-conflict` and the card asks the user to reopen instead of replaying its stale snapshot. The page refetches on the pushed invalidations (`settings/changed`, `credentials/changed`, `models/changed`, and `connection/reset`) once it has loaded, so an external `settings.yaml` edit, a second tab, or a settings-born route converges without polling.
+Every edit lands as `settings.mutate` path ops against the stored section — a set per changed field, an unset per cleared one, and a single unset for a deleted provider row. The page only ever holds the REDACTED descriptor, so it names the fields it can see rather than rebuilding a section: a stored literal secret it never received is mentioned by no op and survives. DeepSeek's `models` is one replace-by-value array: the editor shows inherited effective rows until the first model edit materializes the complete array in the user layer, while reset unsets that override. A row carries the model id and display name; its context window and output cap sit behind the row's own disclosure, the same shape the pi-ai provider form uses. Either capacity is typed as a count with an optional decimal `K` or `M` suffix (`256K`, `1M`; `1M` is 1000K) and stored as the plain count, spelled back in the shortest form that round-trips. Empty ids, duplicate ids, empty explicit names, and unreadable, non-positive, or fractional capacities fail before any write. A typed API key is judged on its own field the same way: after trimming, it must be non-empty and every character must be printable ASCII (`[\x21-\x7E]`), which is exactly what an HTTP header value can carry — the twin of `normalizeApiKey` in `@deepseek-ai/dsh-llm`, mirrored here because the source-plane split forbids importing it. A field holding only whitespace fails rather than being silently dropped, and a value shaped like a pasted `NAME=value` environment line or wrapped in matching quotes is refused as the same format failure; that paste-shape heuristic runs only in the browser, since a false positive in a resolver would leave the environment refusing the key as well. An empty field is not a failure at all: it means keep the stored key on an editor card, and authenticate some other way on a create card. A refused key blocks both the write and the endpoint interrogation, so the page never spends a round trip to be told what the field already says. Each write carries the `revision` the card opened at, so a concurrent write from another tab or an external `settings.yaml` edit is refused as `settings-conflict` and the card asks the user to reopen instead of replaying its stale snapshot. The page refetches on the pushed invalidations (`settings/changed`, `credentials/changed`, `models/changed`, and `connection/reset`) once it has loaded, so an external `settings.yaml` edit, a second tab, or a settings-born route converges without polling.
 
 ## Model list and endpoint interrogation
 

packages/client/ui-models/README.zh.md

@@ -8,7 +8,7 @@
 
 前序首次使用引导页面完成后，DeepSeek 步骤会从同一个联接快照得出 `deepseek-official` 的就绪状态。它通过 `llm-deepseek` 的可配置提供方声明识别官方适配器，因此同 id 但未声明的存活路由不属于可修复配置。若 `apiKey` 字面量对应的 secret 槽位标记为已设置，或凭据引用已配置，该步骤会直接完成而不渲染，其中包括来自启动环境且只读的凭据。只有已挂载且活跃、引用可写但尚未配置的适配器才会显示前往「设置」Models 分区的页面；密钥输入和 `credentials.set` 仅由该分区已有的设置卡片负责，该步骤绝不持有 secret。适配器缺失、路由不活跃、联接失败、部署只读或设置／凭据能力不可用时，该步骤均不渲染并直接完成，以免首次使用引导阻塞产品；Models 页仍是诊断界面。
 
-每一次编辑都以 `settings.mutate` 的路径 op 落到已存分节上——每个变更字段一条 set、每个清空字段一条 unset、删除提供方行则是单独一条 unset。页面自始至终只持有**脱敏后**的 descriptor，因此它点名自己看得见的字段，而不是重建分节：一个它从未收到过的已存字面机密不会被任何 op 提及，也就得以留存。DeepSeek 的 `models` 是一个按值整体替换的数组：编辑器会显示继承而来的生效模型行，直到第一次模型编辑将完整数组具化到用户层；重置则会取消该覆盖。每个模型行承载模型 ID 与显示名称，其上下文窗口与最大输出 token 数则收在该行自己的折叠区里，与 pi-ai 提供方表单采用的形态相同。两项容量都按数值键入，可带十进制的 `K` 或 `M` 后缀（`256K`、`1M`；`1M` 即 1000K），存储为纯数值，回显时写成能够往返的最短形式。空 ID、重复 ID、显式填写的空名称，以及无法读取、非正数或非整数的容量都会在写入前失败。键入的 API 密钥同样在它自己的字段上被判定：trim 之后必须非空，且每个字符都是可打印 ASCII（`[\x21-\x7E]`）——这正是 HTTP 标头值所能承载的范围，是 `@deepseek-ai/dsh-llm` 中 `normalizeApiKey` 的孪生体，因源码平面分割禁止直接引入而在此镜像。只含空白的输入框会失败，而不是被静默丢弃；形如整行粘贴的 `NAME=value` 环境变量或首尾成对引号包裹的值也会失败——该粘贴形状启发式只在浏览器中运行，因为 resolver 中的一次误判会连带让环境变量这条路也拒绝该密钥。留空则完全不是失败：在编辑卡片上它意味着保持已存储的密钥，在新建卡片上则意味着以其他方式鉴权。被拒绝的密钥会同时拦截写入与端点探测，因此页面不会白花一次往返去换取字段上已经写明的答案。每次写入都携带该卡片打开时的 `revision`，因此来自另一个标签页或对 `settings.yaml` 的外部编辑所产生的并发写入会以 `settings-conflict` 被拒绝，卡片会请用户重新打开，而不是把自己的陈旧快照重放上去。页面加载完成后会在推送的失效事件（`settings/changed`、`credentials/changed`、`models/changed` 与 `connection/reset`）上重拉，因此外部的 `settings.yaml` 编辑、第二个标签页或 settings 新生的路由都无需轮询即可收敛。
+每一次编辑都以 `settings.mutate` 的路径 op 落到已存分节上——每个变更字段一条 set、每个清空字段一条 unset、删除提供方行则是单独一条 unset。页面自始至终只持有**脱敏后**的 descriptor，因此它点名自己看得见的字段，而不是重建分节：一个它从未收到过的已存字面机密不会被任何 op 提及，也就得以留存。DeepSeek 的 `models` 是一个按值整体替换的数组：编辑器会显示继承而来的生效模型行，直到第一次模型编辑将完整数组具化到用户层；重置则会取消该覆盖。每个模型行承载模型 ID 与显示名称，其上下文窗口与最大输出 token 数则收在该行自己的折叠区里，与 pi-ai 提供方表单采用的形态相同。两项容量都按数值键入，可带十进制的 `K` 或 `M` 后缀（`256K`、`1M`；`1M` 即 1000K），存储为纯数值，回显时写成能够往返的最短形式。空 ID、重复 ID、显式填写的空名称，以及无法读取、非正数或非整数的容量都会在写入前失败。键入的 API 密钥同样在它自己的字段上被判定：trim 之后必须非空，且每个字符都是可打印 ASCII（`[\x21-\x7E]`）——这正是 HTTP 标头值所能承载的范围，是 `@deepseek-ai/dsh-llm` 中 `normalizeApiKey` 的孪生体，因源码平面分割禁止直接引入而在此镜像。只含空白的输入框会失败，而不是被静默丢弃；形如整行粘贴的 `NAME=value` 环境变量或首尾成对引号包裹的值，会以同一条格式失败被拒绝——该粘贴形状启发式只在浏览器中运行，因为 resolver 中的一次误判会连带让环境变量这条路也拒绝该密钥。留空则完全不是失败：在编辑卡片上它意味着保持已存储的密钥，在新建卡片上则意味着以其他方式鉴权。被拒绝的密钥会同时拦截写入与端点探测，因此页面不会白花一次往返去换取字段上已经写明的答案。每次写入都携带该卡片打开时的 `revision`，因此来自另一个标签页或对 `settings.yaml` 的外部编辑所产生的并发写入会以 `settings-conflict` 被拒绝，卡片会请用户重新打开，而不是把自己的陈旧快照重放上去。页面加载完成后会在推送的失效事件（`settings/changed`、`credentials/changed`、`models/changed` 与 `connection/reset`）上重拉，因此外部的 `settings.yaml` 编辑、第二个标签页或 settings 新生的路由都无需轮询即可收敛。
 
 ## 模型列表与端点询问
 

packages/client/ui-models/src/client/apiKey.ts

@@ -22,8 +22,14 @@ const LEGAL_API_KEY = /^[\x21-\x7E]+$/
  */
 const ENV_LINE = /^[A-Z][A-Z0-9_]*=[^=]/
 
-/** Copy key naming why a typed key cannot be saved. */
-export type ApiKeyFailureKey = 'keyBlank' | 'keyIllegalCharacters' | 'keyLooksWrapped'
+/**
+ * Copy key naming why a typed key cannot be saved. A wrapped paste reports the
+ * same format failure as an illegal character: the reader's next move is the
+ * same either way — look at the key and paste it again — so naming the two
+ * causes apart would spend the field's one line on a distinction that changes
+ * nothing about what to do.
+ */
+export type ApiKeyFailureKey = 'keyBlank' | 'keyIllegalCharacters'
 
 /** Whether a value is wrapped in one matching pair of quotes. */
 function isQuoted(value: string): boolean {
@@ -46,7 +52,7 @@ export function apiKeyFailure(draft: string): ApiKeyFailureKey | undefined {
   if (draft.length === 0) return undefined
   const value = draft.trim()
   if (value.length === 0) return 'keyBlank'
-  if (ENV_LINE.test(value) || isQuoted(value)) return 'keyLooksWrapped'
+  if (ENV_LINE.test(value) || isQuoted(value)) return 'keyIllegalCharacters'
   if (!LEGAL_API_KEY.test(value)) return 'keyIllegalCharacters'
   return undefined
 }

packages/client/ui-models/src/client/locales.ts

@@ -49,7 +49,6 @@ export const en = {
   keyBlank: 'Enter the API key, or leave the field empty to keep the stored one.',
   keyBlankNew: 'Enter the API key, or leave the field empty if this provider authenticates another way.',
   keyIllegalCharacters: 'This API key is not in a valid format. Please check it.',
-  keyLooksWrapped: 'Paste only the key itself — not a NAME=value line, and without surrounding quotes.',
   modelIdRequired: 'Model ID is required.',
   modelIdDuplicate: 'Model ID must be unique.',
   modelNameInvalid: 'Display name cannot be empty.',
@@ -137,7 +136,6 @@ export const zh: typeof en = {
   keyBlank: '请输入 API 密钥；留空则保持已存储的密钥。',
   keyBlankNew: '请输入 API 密钥；若该提供方以其他方式鉴权，可以留空。',
   keyIllegalCharacters: '该 API 密钥格式错误，请检查。',
-  keyLooksWrapped: '请只粘贴密钥本身——不要带 NAME=value 整行，也不要带引号。',
   modelIdRequired: '模型 ID 不能为空。',
   modelIdDuplicate: '模型 ID 不能重复。',
   modelNameInvalid: '显示名称不能为空。',

packages/client/ui-models/tests/components.spec.tsx

@@ -1121,8 +1121,8 @@ describe('apiKeyFailure', () => {
     ['double quotes', '"sk-abc"'],
     ['single quotes', '\'sk-abc\''],
     ['backticks', '`sk-abc`'],
-  ])('fails %s as wrapped', (_label, draft) => {
-    expect(apiKeyFailure(draft)).toBe('keyLooksWrapped')
+  ])('fails %s as a format failure', (_label, draft) => {
+    expect(apiKeyFailure(draft)).toBe('keyIllegalCharacters')
   })
 
   it('needs a matching closing quote before it calls a value wrapped', () => {

packages/client/ui-models/tests/provider-form.spec.tsx

@@ -987,7 +987,7 @@ describe('API key field', () => {
 
     fireEvent.change(screen.getByLabelText(en.keyInput), { target: { value: 'OPENAI_API_KEY=sk-abc' } })
 
-    expect(screen.getByText(en.keyLooksWrapped)).toBeTruthy()
+    expect(screen.getByText(en.keyIllegalCharacters)).toBeTruthy()
     expect(buttonNamed(en.apply).disabled).toBe(true)
   })