新增: obscura 安装引导(prompt AI 看 hint 帮装 + 前端工具卡片 AI 帮装按钮)

src/i18n/en/aiChat.ts

@@ -150,6 +150,8 @@ export default {
     regenerate: 'Regenerate',
     regenerateFailed: 'Regenerate failed: {msg}',
     regenerateUnavailable: 'No reply to regenerate',
+    // fetch_url "Install obscura via AI" button triggers sendMessage; failure toast (mirrors editMessageFailed)
+    sendFailed: 'Send failed: {msg}',
 
     // ── UX-09: edit last user message and regenerate ──
     editMessage: 'Edit',

src/i18n/en/aiTool.ts

@@ -93,6 +93,26 @@ export default {
     httpTruncated: 'Response truncated ({bytes}), see details',
     httpRequestFallback: 'HTTP Request',
     foundN: 'Found {n}',
+    // fetch_url result (render_mode badge + obscura install guidance)
+    // - fetchUrlTitle: header subtitle when title present
+    // - fetchUrlRendered: render_mode=obscura (JS render success) badge text
+    // - fetchUrlStatic: render_mode=static/static_fallback (static) badge text
+    // - fetchUrlFallbackHint: static_fallback (obscura missing/failed) summary, hints static fallback
+    // - fetchUrlChars: static-mode markdown char count (collapsed subtitle)
+    // - charsUnit: char unit (joined with length)
+    // - installObscura: "Install via AI" button label
+    // - obscuraInstallPrompt: dialog auto-sent to AI on button click (cargo install + releases options)
+    fetchUrlTitle: 'Title: {title}',
+    fetchUrlRendered: 'JS rendered',
+    fetchUrlStatic: 'static',
+    fetchUrlFallbackHint: 'obscura not installed, fell back to static mode (JS rendering unavailable)',
+    fetchUrlChars: '{n} chars',
+    charsUnit: 'chars',
+    // fetch_url header display name (useToolCardHeader): host-shortened prefix + fallback when no url
+    fetchUrlPrefix: 'Fetch',
+    fetchUrlFallback: 'Fetch URL',
+    installObscura: 'Install obscura via AI',
+    obscuraInstallPrompt: 'Please install obscura (a Rust headless browser, used by fetch_url render=true for JS rendering). Try `cargo install obscura` first; if cargo is unavailable, download the prebuilt binary for this platform from the GitHub releases (github.com/h4ckf0r0day/obscura) and place it on PATH. After installing, verify with `obscura --version` and tell me I can retry the web fetch.',
     // grep cross-file content search results (F-260621): per output_mode phrasing
     grepHitsN: '{n} hits',
     grepFilesN: '{n} files',