refactor(providers): the UI, the connection test and the routes read the record's fields

Step 5 of the provider refactor plan. Provider names gave way to the
record's credential and sdk fields in: hasCredentials (one rule per
credential kind), the connection test (an Object.hasOwn check first, then a
credential switch; EdgeOne's site endpoint and cookie forwarding follow
credential none), the chat route (the on-site function and the single-system
rule for the OpenAI SDK), the credentials form (which fields to show, the
optional-key label, the base URL hint from the record), the picker (the note
from the record), the logo (icon and logo fields), the settings dialog (test
blocker, error hints, EdgeOne origin), the admin panel (fixedCredentials),
chatRequestUrl (sdk), the model list (sdk aihubmix) and the zod schema
(Object.hasOwn instead of 'in'). The eight provider-specific dictionary
entries moved into the record as four-language objects; needAzure became a
generic needUrl.

Two intended behavior changes: the connection test answers 400 'Invalid
provider' for an unknown name whether or not a key is sent (before: 400
'API key is required' without a key, 200 with an error text with one); and
Azure has no placeholder default URL any more, so a new Azure entry starts
with an empty URL and the generic 'needs a URL' rule applies. The e2e
Azure test seeds no URL and expects the new wording. Out-of-layer
provider-name checks: 44 before, 6 after (the admin panel's fixed-variable
branches for Bedrock, Vertex AI and Ollama, kept on purpose). Behavior
snapshot unchanged.

lib/i18n/dictionaries/en.json

@@ -299,8 +299,6 @@
         "requestUrl": "Requests go to {url}",
         "baseUrlWithExample": "Base URL (optional, e.g. {example})",
         "customEndpoint": "Custom endpoint URL",
-        "minimaxBaseUrlHint": "Use /anthropic for Anthropic-compatible API (recommended), or /v1 for OpenAI-compatible API",
-        "mimoBaseUrlHint": "Default works with pay-as-you-go keys (sk-...). Token Plan subscribers (tp-... keys) must set https://token-plan-cn.xiaomimimo.com/v1",
         "models": "Models",
         "customModelId": "Custom model ID...",
         "allAdded": "All added",
@@ -343,12 +341,6 @@
         "groupAggregators": "Aggregators",
         "groupCloud": "Cloud platforms",
         "groupSelfHosted": "Self-hosted",
-        "noteBedrock": "AWS credentials",
-        "noteVertex": "Express mode key",
-        "noteAzure": "Key and resource URL",
-        "noteEdgeone": "No key needed",
-        "noteOllama": "Key optional",
-        "noteSglang": "Your server's URL",
         "added": "Added",
         "awsCredentials": "AWS credentials",
         "bedrockAuthApiKey": "Bedrock API key",
@@ -362,6 +354,7 @@
         "modelFailed": "Failed",
         "modelUntested": "Untested",
         "needKey": "Fill in the API key first.",
+        "needUrl": "Fill in the API key and the base URL first.",
         "needAws": "Fill in the AWS credentials and region first.",
         "needModel": "Add a model first.",
         "stepConnect": "Connection",
@@ -384,7 +377,6 @@
         "deleteProviderOnly": "Delete {name}",
         "addProviderEntry": "Add a provider…",
         "awsKeysRejected": "AWS rejected these access keys. Check that both were copied in full.",
-        "needAzure": "Fill in the API key and your Azure resource's base URL first.",
         "validationFailedCountOne": "{count} model failed the test",
         "validationFailedCountOther": "{count} models failed the test",
         "deleteProviderNamedOne": "Delete {name} and its model",

lib/i18n/dictionaries/ja.json

@@ -254,8 +254,6 @@
         "requestUrl": "リクエスト先: {url}",
         "baseUrlWithExample": "ベース URL（オプション、例: {example}）",
         "customEndpoint": "カスタムエンドポイント URL",
-        "minimaxBaseUrlHint": "/anthropic で Anthropic 互換 API（推奨）、または /v1 で OpenAI 互換 API を使用",
-        "mimoBaseUrlHint": "デフォルトは従量課金キー（sk-...）用です。Token Plan 加入者（tp-... キー）は https://token-plan-cn.xiaomimimo.com/v1 を設定してください",
         "models": "モデル",
         "customModelId": "カスタムモデル ID...",
         "allAdded": "すべて追加済み",
@@ -298,12 +296,6 @@
         "groupAggregators": "アグリゲーター",
         "groupCloud": "クラウド",
         "groupSelfHosted": "セルフホスト",
-        "noteBedrock": "AWS 認証情報",
-        "noteVertex": "Express モードのキー",
-        "noteAzure": "キーとリソース URL",
-        "noteEdgeone": "キー不要",
-        "noteOllama": "キーは任意",
-        "noteSglang": "サーバーの URL",
         "added": "追加済み",
         "awsCredentials": "AWS 認証情報",
         "bedrockAuthApiKey": "Bedrock API キー",
@@ -317,6 +309,7 @@
         "modelFailed": "エラー",
         "modelUntested": "未テスト",
         "needKey": "先に API キーを入力してください。",
+        "needUrl": "先に API キーとベース URL を入力してください。",
         "needAws": "先に AWS 認証情報とリージョンを入力してください。",
         "needModel": "先にモデルを追加してください。",
         "stepConnect": "接続",
@@ -339,7 +332,6 @@
         "deleteProviderOnly": "{name} を削除",
         "addProviderEntry": "プロバイダーを追加…",
         "awsKeysRejected": "AWS がこのアクセスキーを拒否しました。2 つとも最後までコピーされているか確認してください。",
-        "needAzure": "先に API キーと Azure リソースのベース URL を入力してください。",
         "validationFailedCountOne": "{count} 個のモデルがテストに失敗しました",
         "validationFailedCountOther": "{count} 個のモデルがテストに失敗しました",
         "deleteProviderNamedOne": "{name} とそのモデルを削除",

lib/i18n/dictionaries/zh-Hant.json

@@ -299,8 +299,6 @@
         "requestUrl": "請求將傳送至 {url}",
         "baseUrlWithExample": "基礎 URL（可選，例如 {example}）",
         "customEndpoint": "自訂端點 URL",
-        "minimaxBaseUrlHint": "使用 /anthropic 端點為 Anthropic 相容 API（推薦），或使用 /v1 端點為 OpenAI 相容 API",
-        "mimoBaseUrlHint": "預設地址適用於按量付費金鑰（sk-...）。Token Plan 訂閱用戶（tp-... 金鑰）請設定為 https://token-plan-cn.xiaomimimo.com/v1",
         "models": "模型",
         "customModelId": "自訂模型 ID...",
         "allAdded": "已全部新增",
@@ -343,12 +341,6 @@
         "groupAggregators": "聚合平台",
         "groupCloud": "雲端平台",
         "groupSelfHosted": "自行部署",
-        "noteBedrock": "AWS 憑證",
-        "noteVertex": "Express 模式 Key",
-        "noteAzure": "Key 和資源位址",
-        "noteEdgeone": "不用 Key",
-        "noteOllama": "Key 可不填",
-        "noteSglang": "填服務位址",
         "added": "已新增",
         "awsCredentials": "AWS 憑證",
         "bedrockAuthApiKey": "Bedrock API Key",
@@ -362,6 +354,7 @@
         "modelFailed": "出錯",
         "modelUntested": "未測試",
         "needKey": "先填好 API Key。",
+        "needUrl": "先填好 API Key 和位址。",
         "needAws": "先填好 AWS 憑證和區域。",
         "needModel": "先新增一個模型。",
         "stepConnect": "連線",
@@ -384,7 +377,6 @@
         "deleteProviderOnly": "刪除 {name}",
         "addProviderEntry": "新增服務商…",
         "awsKeysRejected": "AWS 拒絕了這組存取金鑰。檢查兩個金鑰是否都複製完整。",
-        "needAzure": "先填好 API Key 和 Azure 資源的 Base URL。",
         "validationFailedCountOne": "{count} 個模型沒通過測試",
         "validationFailedCountOther": "{count} 個模型沒通過測試",
         "deleteProviderNamedOne": "刪除 {name} 和它的 {count} 個模型",

lib/i18n/dictionaries/zh.json

@@ -299,8 +299,6 @@
         "requestUrl": "请求将发往 {url}",
         "baseUrlWithExample": "基础 URL（可选，例如 {example}）",
         "customEndpoint": "自定义端点 URL",
-        "minimaxBaseUrlHint": "使用 /anthropic 端点为 Anthropic 兼容 API（推荐），或使用 /v1 端点为 OpenAI 兼容 API",
-        "mimoBaseUrlHint": "默认地址适用于按量付费密钥（sk-...）。Token Plan 订阅用户（tp-... 密钥）请设置为 https://token-plan-cn.xiaomimimo.com/v1",
         "models": "模型",
         "customModelId": "自定义模型 ID...",
         "allAdded": "已全部添加",
@@ -343,12 +341,6 @@
         "groupAggregators": "聚合平台",
         "groupCloud": "云平台",
         "groupSelfHosted": "自己部署",
-        "noteBedrock": "AWS 凭证",
-        "noteVertex": "Express 模式 Key",
-        "noteAzure": "Key 和资源地址",
-        "noteEdgeone": "不用 Key",
-        "noteOllama": "Key 可不填",
-        "noteSglang": "填服务地址",
         "added": "已添加",
         "awsCredentials": "AWS 凭证",
         "bedrockAuthApiKey": "Bedrock API Key",
@@ -362,6 +354,7 @@
         "modelFailed": "出错",
         "modelUntested": "未测试",
         "needKey": "先填好 API Key。",
+        "needUrl": "先填好 API Key 和地址。",
         "needAws": "先填好 AWS 凭证和区域。",
         "needModel": "先添加一个模型。",
         "stepConnect": "连接",
@@ -384,7 +377,6 @@
         "deleteProviderOnly": "删除 {name}",
         "addProviderEntry": "添加服务商…",
         "awsKeysRejected": "AWS 拒绝了这组访问密钥。检查两个密钥是否都复制完整。",
-        "needAzure": "先填好 API Key 和 Azure 资源的 Base URL。",
         "validationFailedCountOne": "{count} 个模型没通过测试",
         "validationFailedCountOther": "{count} 个模型没通过测试",
         "deleteProviderNamedOne": "删除 {name} 和它的 {count} 个模型",