feat(phase2): localization EN/RU + additional widget types

- Add svelte-i18n with 224 translation keys (English + Russian)
- Language switcher in header (EN/RU toggle, persists to localStorage)
- Extract all hardcoded strings from 37 component/page files
- Add 4 new widget types: Bookmark, Note (markdown), Embed (iframe), Status
- WidgetRenderer dispatches by type, WidgetGrid supports full-width widgets
- Type-specific config forms in board editor
- Install marked for markdown rendering

package-lock.json

@@ -16,6 +16,7 @@
 				"clsx": "^2.1.0",
 				"jsonwebtoken": "^9.0.2",
 				"lucide-svelte": "^0.469.0",
+				"marked": "^17.0.5",
 				"node-cron": "^3.0.3",
 				"openid-client": "^6.8.2",
 				"simple-icons": "^13.0.0",
@@ -33,6 +34,7 @@
 				"@testing-library/svelte": "^5.2.0",
 				"@types/bcryptjs": "^2.4.6",
 				"@types/jsonwebtoken": "^9.0.7",
+				"@types/marked": "^6.0.0",
 				"@types/node-cron": "^3.0.11",
 				"eslint": "^9.18.0",
 				"eslint-config-prettier": "^10.0.0",
@@ -1774,6 +1776,16 @@
 				"@types/node": "*"
 			}
 		},
+		"node_modules/@types/marked": {
+			"version": "6.0.0",
+			"resolved": "https://registry.npmjs.org/@types/marked/-/marked-6.0.0.tgz",
+			"integrity": "sha512-jmjpa4BwUsmhxcfsgUit/7A9KbrC48Q0q8KvnY107ogcjGgTFDlIL3RpihNpx2Mu1hM4mdFQjoVc4O6JoGKHsA==",
+			"deprecated": "This is a stub types definition. marked provides its own type definitions, so you do not need this installed.",
+			"dev": true,
+			"dependencies": {
+				"marked": "*"
+			}
+		},
 		"node_modules/@types/ms": {
 			"version": "2.1.0",
 			"resolved": "https://registry.npmjs.org/@types/ms/-/ms-2.1.0.tgz",
@@ -3919,6 +3931,17 @@
 				"@jridgewell/sourcemap-codec": "^1.5.5"
 			}
 		},
+		"node_modules/marked": {
+			"version": "17.0.5",
+			"resolved": "https://registry.npmjs.org/marked/-/marked-17.0.5.tgz",
+			"integrity": "sha512-6hLvc0/JEbRjRgzI6wnT2P1XuM1/RrrDEX0kPt0N7jGm1133g6X7DlxFasUIx+72aKAr904GTxhSLDrd5DIlZg==",
+			"bin": {
+				"marked": "bin/marked.js"
+			},
+			"engines": {
+				"node": ">= 20"
+			}
+		},
 		"node_modules/memoize-weak": {
 			"version": "1.0.2",
 			"resolved": "https://registry.npmjs.org/memoize-weak/-/memoize-weak-1.0.2.tgz",
@@ -7134,6 +7157,15 @@
 				"@types/node": "*"
 			}
 		},
+		"@types/marked": {
+			"version": "6.0.0",
+			"resolved": "https://registry.npmjs.org/@types/marked/-/marked-6.0.0.tgz",
+			"integrity": "sha512-jmjpa4BwUsmhxcfsgUit/7A9KbrC48Q0q8KvnY107ogcjGgTFDlIL3RpihNpx2Mu1hM4mdFQjoVc4O6JoGKHsA==",
+			"dev": true,
+			"requires": {
+				"marked": "*"
+			}
+		},
 		"@types/ms": {
 			"version": "2.1.0",
 			"resolved": "https://registry.npmjs.org/@types/ms/-/ms-2.1.0.tgz",
@@ -8609,6 +8641,11 @@
 				"@jridgewell/sourcemap-codec": "^1.5.5"
 			}
 		},
+		"marked": {
+			"version": "17.0.5",
+			"resolved": "https://registry.npmjs.org/marked/-/marked-17.0.5.tgz",
+			"integrity": "sha512-6hLvc0/JEbRjRgzI6wnT2P1XuM1/RrrDEX0kPt0N7jGm1133g6X7DlxFasUIx+72aKAr904GTxhSLDrd5DIlZg=="
+		},
 		"memoize-weak": {
 			"version": "1.0.2",
 			"resolved": "https://registry.npmjs.org/memoize-weak/-/memoize-weak-1.0.2.tgz",