release: v1.4.0 — 标签系统、操作日志扩展与文档截图更新

- 每用户标签与彩色打标，图库 OR/AND 筛选与批量打标
- 操作日志记录登录、删除、设置与标签操作
- API 标签/打标接口；README 与文档站截图同步

i18n/locales/en.json

@@ -166,6 +166,104 @@
     "sessionTitle": "This session",
     "sessionEmpty": "No uploads in this session"
   },
+  "tags": {
+    "column": "Tags",
+    "uploadLabel": "Tags (optional)",
+    "addTag": "Add tag",
+    "searchOrCreate": "Search or create tag",
+    "createNamed": "Create tag \"{name}\"",
+    "created": "Created tag \"{name}\"",
+    "createFailed": "Failed to create tag",
+    "updateFailed": "Failed to update tags",
+    "filterAll": "All tags",
+    "filterSelected": "{n} selected",
+    "filterTitle": "Filter by tag",
+    "manage": "Manage",
+    "manageTitle": "Manage tags",
+    "manageImageTitle": "Manage tags",
+    "manageSubtitle": "Centralized tag management — add, edit, delete, and merge",
+    "newTag": "New tag",
+    "addTag": "Add tag",
+    "mergeTags": "Merge tags",
+    "searchName": "Search tag name",
+    "filterStatusAll": "All statuses",
+    "filterStatusUsed": "In use",
+    "filterStatusUnused": "Unused",
+    "statTotal": "Total tags",
+    "statUsed": "Tags in use",
+    "statUnused": "Unused tags",
+    "statNew7d": "New in 7 days",
+    "colName": "Tag name",
+    "colImageCount": "Images",
+    "colLastUsed": "Last used",
+    "neverUsed": "Never used",
+    "colActions": "Actions",
+    "mergeIntoAction": "Merge into…",
+    "mergeIntoTitle": "Merge into…",
+    "mergeIntoSubtitle": "Merge tag \"{name}\" into another tag",
+    "mergeIntoChoose": "Choose the target tag",
+    "mergeIrreversibleTitle": "This cannot be undone",
+    "mergeIrreversible": "Merged tags are permanently deleted and their images move to the kept tag. This action cannot be reversed.",
+    "mergeConfirmKeep": "Keeping tag \"{name}\"",
+    "mergeWillDelete": "These tags will be deleted: {names}",
+    "totalCount": "{n} tags",
+    "sortByCount": "By count",
+    "sortByName": "By name",
+    "search": "Search tags",
+    "namePlaceholder": "Tag name",
+    "customColor": "Custom color",
+    "pickColor": "Pick a color",
+    "preview": "Preview",
+    "renamed": "Tag renamed",
+    "renameFailed": "Rename failed",
+    "colorFailed": "Failed to update color",
+    "deleted": "Deleted tag \"{name}\"",
+    "deleteFailed": "Failed to delete tag",
+    "deleteConfirmTitle": "Delete tag",
+    "deleteConfirmDesc": "Delete tag \"{name}\"? It will be removed from all images. This cannot be undone.",
+    "mergeSelectAtLeast": "Select at least 2 tags",
+    "mergeHint": "Select multiple tags to merge; images from other tags will move to the kept tag",
+    "mergeSelected": "{n} tags selected",
+    "mergeClear": "Clear selection",
+    "mergeTitle": "Merge tags",
+    "mergeSubtitle": "Combine multiple tags into one",
+    "mergeNote": "Unselected tags will be deleted; their images move to the kept tag",
+    "mergeChooseTarget": "Choose the tag to keep",
+    "mergeAction": "Merge into…",
+    "mergeRow": "Merge",
+    "mergeConfirm": "Confirm merge",
+    "merged": "Tags merged",
+    "mergeFailed": "Merge failed",
+    "untagged": "Untagged",
+    "untaggedAction": "+ Untagged",
+    "unlabeled": "Unlabeled",
+    "selectedLabel": "Selected ({n})",
+    "clearSelected": "Clear",
+    "selectAll": "Select all",
+    "deselectAll": "Deselect all",
+    "existingLabel": "Existing tags ({n})",
+    "commonTags": "Common tags",
+    "recentTags": "Recently used",
+    "moreTags": "{n} more tags",
+    "classifyHint": "Tags are for organization only and do not affect storage paths",
+    "saved": "Tags saved",
+    "saveFailed": "Failed to save tags",
+    "batchTagAll": "Batch tag",
+    "batchAddTitle": "Add tags",
+    "batchAddSubtitle": "{n} images selected",
+    "modeOr": "Any",
+    "modeAnd": "All",
+    "batchTitle": "Batch tags",
+    "batchSubtitle": "Update tags for {n} selected image(s)",
+    "batchAdd": "Add tags",
+    "batchRemove": "Remove tags",
+    "batchSuccess": "Batch update complete",
+    "batchFailed": "Batch update failed",
+    "noMatch": "No matching tags",
+    "emptyHint": "No tags yet — type a name to create one",
+    "settingsLink": "Manage tags in the gallery (create, colors, merge, delete)",
+    "openManage": "Open tag manager"
+  },
   "copy": {
     "url": "URL",
     "markdown": "Markdown",
@@ -206,12 +304,30 @@
     "title": "System settings",
     "pageTitle": "Settings & preferences",
     "pageSubtitle": "Manage system configuration and activity logs",
-    "pageSubtitleBasic": "Manage system configuration and upload preferences",
+    "pageSubtitleBasic": "Configure basic options so PicHost works better for you.",
+    "pageSubtitleDomains": "Configure site and image URLs and upload path rules",
+    "pageSubtitleAccess": "Configure image access policies to prevent hotlink abuse",
+    "pageSubtitleLogs": "View uploads, deletions, edits, and configuration changes",
+    "searchPlaceholder": "Search settings…",
+    "searchEmpty": "No matches",
+    "restoreDefaults": "Restore defaults",
+    "restoredDefaults": "Defaults restored",
+    "refererProtection": "Hotlink protection",
+    "defaultCopyFormatHint": "Link format copied automatically after upload",
+    "systemVersionHint": "Currently running PicHost version",
+    "badgeEnabled": "Enabled",
+    "domainSeparationProxyTitle": "Both domains must resolve to this host",
+    "domainSeparationProxyBody": "Point the site and image URLs to this host and reverse-proxy to port 6892 (Nginx, Caddy, NPM, etc.).",
+    "siteBaseUrlRoleHint": "URL for the admin UI",
+    "imageBaseUrlRoleHint": "URL for serving and displaying images",
+    "imageDomainSection": "Image domain",
     "navBasic": "Basic",
     "navDomains": "Domains & paths",
     "navAccess": "Access control",
+    "navTags": "Tags",
     "navPreferences": "Preferences",
     "navLogs": "Activity log",
+    "pageSubtitleTags": "Create, rename, merge, or delete tags",
     "systemVersion": "Version",
     "checkUpdate": "Check for updates",
     "saveSettings": "Save settings",
@@ -231,6 +347,10 @@
     "refererExamplesSample": "example.com, static.example.com",
     "refererScenarioTitle": "Common use case",
     "refererScenarioDesc": "Allow your main site and static site to embed images",
+    "refererScenario1": "Personal blog embedding images",
+    "refererScenario2": "Corporate site and static CDN",
+    "refererScenario3": "Local development",
+    "refererScenario4": "Leave empty for no restriction",
     "refererEnabled": "Enabled",
     "refererUnrestricted": "Unrestricted",
     "loginVerification": "Login verification",
@@ -594,20 +714,28 @@
   },
   "logs": {
     "pageTitle": "Activity log",
-    "pageSubtitle": "Your upload and delete history",
-    "pageSubtitleAdmin": "Upload and delete history for all users",
+    "pageSubtitle": "Your activity history",
+    "pageSubtitleAdmin": "Activity history for all users",
     "loadFailed": "Failed to load activity log",
     "empty": "No activity yet",
     "entriesUnit": "entries",
     "filterActionAll": "All actions",
     "filterSourceAll": "All sources",
     "filterUserAll": "All users",
-    "searchPlaceholder": "Search filename",
+    "searchPlaceholder": "Search filename, path, or IP",
+    "dateFrom": "Start date",
+    "dateTo": "End date",
+    "dateRangeSeparator": "~",
     "summaryAll": "All · {total} entries, {upload} uploads, {delete} deletes",
     "actionUpload": "Upload",
     "actionDelete": "Delete",
+    "actionLogin": "Login",
+    "actionEdit": "Edit",
+    "actionSettings": "Settings",
+    "actionTags": "Tags",
     "sourceWeb": "Web",
     "sourceApi": "API",
+    "sourceAdmin": "Admin",
     "colTime": "Time",
     "colUser": "User",
     "colStorage": "Storage",
@@ -616,7 +744,11 @@
     "colFile": "File",
     "colFolder": "Folder",
     "colSize": "Size",
-    "colKey": "Path"
+    "colKey": "Path",
+    "colIp": "IP address",
+    "colResult": "Result",
+    "resultSuccess": "Success",
+    "resultFailure": "Failed"
   },
   "image": {
     "empty": "No images",