fix: complete help guide i18n — all body text translated

- Help badges, stat labels, headings tagged
- All <li> descriptions after <strong> wrapped in data-i18n
- 30 text fragments in help body tagged + EN translations
- 791 locale keys total, 0 untranslated help keys
- Emojis preserved in nav items

frontend/locales/en.json

@@ -747,5 +747,50 @@
   "admin.col_status": "Status",
   "admin.col_last_login": "Last login",
   "admin.col_actions": "Actions",
-  "common.never": "Never"
+  "common.never": "Never",
+  "help.desc_hamburger": "Show/hide the sidebar",
+  "help.desc_sidebar_toggle": "Hide the sidebar for more space",
+  "help.desc_logo": "Return to home",
+  "help.desc_search_bar": "Global search with autocomplete",
+  "help.desc_vault_indicator": "Shows the active context (All, vault1, etc.)",
+  "help.desc_vaults_tab": "File and folder tree",
+  "help.desc_tags_tab": "Clickable tag cloud",
+  "help.desc_filtering": "Search bar to filter files/tags",
+  "help.desc_quick_select": "Dropdown to change vault",
+  "help.desc_resize": "Drag the right edge to adjust width",
+  "help.desc_hide": "Click the sidebar icon in the header",
+  "help.desc_breadcrumb": "File path (clickable to reposition sidebar)",
+  "help.desc_title_tags": "File metadata",
+  "help.desc_action_buttons": "Copy, Source, Download, Edit, Open in new window",
+  "help.desc_rendered_content": "Markdown with wikilinks and images",
+  "help.065f53ee": "Silent auto-save after 2s of inactivity",
+  "help.ef1531ce": "A temporary tab (italic) is replaced",
+  "help.7db70e27": "Copy, Source, Download, Edit, Open in new window",
+  "help.d186a19e": "The \"Recent\" tab in the sidebar lists your",
+  "help.e3fce7a3": "Opens the file in a temporary tab (preview,",
+  "help.170a6982": "Horizontal display with the file name",
+  "help.c8532869": "Completion, rewrite, translation (see",
+  "help.fdeaf803": "Each file type has its icon (markdown, code, etc.)",
+  "help.f0adf67a": "Scroll wheel to zoom, click-drag to move",
+  "help.ab2c4150": "Files (squares) and folders (circles) with icons",
+  "help.89bd3c4c": "Only shows nodes with a specific tag",
+  "help.9f78b3ec": "Easier navigation in long files",
+  "help.085ec31f": "Quick select at the top of the Vault tab",
+  "help.6b88a375": "Debounce delay, results per page, timeout",
+  "help.e5b67e3d": "Your choice is saved in localStorage",
+  "help.4de7e318": "The 50 most recent searches (localStorage)",
+  "help.6b8fc728": "↑/↓ to navigate, Enter to select",
+  "help.9edeaa11": "Controls exploration depth (0-3)",
+  "help.6e940dac": "Click the sidebar icon in the header",
+  "help.a579cf4d": "Preview note content without navigating",
+  "help.5d0fbb81": "Workers, TF-IDF boosts, prefix expansions",
+  "help.5ab8c78d": "Stay open until manually closed",
+  "help.6ae5342c": "Index stats, memory, search engine",
+  "help.8717768b": "Node metadata (tags, links, path)",
+  "help.6a5ddef2": "Tags adapt to the selected vault",
+  "help.e23c94dd": "In the toolbar (when available)",
+  "help.00b9572b": "Results ranked by TF-IDF relevance",
+  "help.a4a4e21b": "\"×\" button to reset the filter",
+  "help.04df1506": "Global search with autocomplete",
+  "help.d5c977ac": "Code blocks adapt to the theme"
 }