feat: Reinitialize frontend with SvelteKit and TypeScript

- Delete old Vite+Svelte frontend
- Initialize new SvelteKit project with TypeScript
- Configure Tailwind CSS v4 + DaisyUI
- Implement JWT authentication with auto-refresh
- Create login page with form validation (Zod)
- Add protected route guards
- Update Docker configuration for single-stage build
- Add E2E tests with Playwright (6/11 passing)
- Fix Svelte 5 reactivity with $state() runes

Known issues:
- 5 E2E tests failing (timing/async issues)
- Token refresh implementation needs debugging
- Validation error display timing

frontend/node_modules/@adobe/css-tools/dist/cjs/adobe-css-tools.d.cts

@@ -0,0 +1,176 @@
+declare class CssParseError extends Error {
+    readonly reason: string;
+    readonly filename?: string;
+    readonly line: number;
+    readonly column: number;
+    readonly source: string;
+    constructor(filename: string, msg: string, lineno: number, column: number, css: string);
+}
+
+/**
+ * Store position information for a node
+ */
+declare class Position {
+    start: {
+        line: number;
+        column: number;
+    };
+    end: {
+        line: number;
+        column: number;
+    };
+    source?: string;
+    constructor(start: {
+        line: number;
+        column: number;
+    }, end: {
+        line: number;
+        column: number;
+    }, source: string);
+}
+
+declare enum CssTypes {
+    stylesheet = "stylesheet",
+    rule = "rule",
+    declaration = "declaration",
+    comment = "comment",
+    container = "container",
+    charset = "charset",
+    document = "document",
+    customMedia = "custom-media",
+    fontFace = "font-face",
+    host = "host",
+    import = "import",
+    keyframes = "keyframes",
+    keyframe = "keyframe",
+    layer = "layer",
+    media = "media",
+    namespace = "namespace",
+    page = "page",
+    startingStyle = "starting-style",
+    supports = "supports"
+}
+type CssCommonAST = {
+    type: CssTypes;
+};
+type CssCommonPositionAST = CssCommonAST & {
+    position?: Position;
+    parent?: unknown;
+};
+type CssStylesheetAST = CssCommonAST & {
+    type: CssTypes.stylesheet;
+    stylesheet: {
+        source?: string;
+        rules: Array<CssAtRuleAST>;
+        parsingErrors?: Array<CssParseError>;
+    };
+};
+type CssRuleAST = CssCommonPositionAST & {
+    type: CssTypes.rule;
+    selectors: Array<string>;
+    declarations: Array<CssDeclarationAST | CssCommentAST>;
+};
+type CssDeclarationAST = CssCommonPositionAST & {
+    type: CssTypes.declaration;
+    property: string;
+    value: string;
+};
+type CssCommentAST = CssCommonPositionAST & {
+    type: CssTypes.comment;
+    comment: string;
+};
+type CssContainerAST = CssCommonPositionAST & {
+    type: CssTypes.container;
+    container: string;
+    rules: Array<CssAtRuleAST>;
+};
+type CssCharsetAST = CssCommonPositionAST & {
+    type: CssTypes.charset;
+    charset: string;
+};
+type CssCustomMediaAST = CssCommonPositionAST & {
+    type: CssTypes.customMedia;
+    name: string;
+    media: string;
+};
+type CssDocumentAST = CssCommonPositionAST & {
+    type: CssTypes.document;
+    document: string;
+    vendor?: string;
+    rules: Array<CssAtRuleAST>;
+};
+type CssFontFaceAST = CssCommonPositionAST & {
+    type: CssTypes.fontFace;
+    declarations: Array<CssDeclarationAST | CssCommentAST>;
+};
+type CssHostAST = CssCommonPositionAST & {
+    type: CssTypes.host;
+    rules: Array<CssAtRuleAST>;
+};
+type CssImportAST = CssCommonPositionAST & {
+    type: CssTypes.import;
+    import: string;
+};
+type CssKeyframesAST = CssCommonPositionAST & {
+    type: CssTypes.keyframes;
+    name: string;
+    vendor?: string;
+    keyframes: Array<CssKeyframeAST | CssCommentAST>;
+};
+type CssKeyframeAST = CssCommonPositionAST & {
+    type: CssTypes.keyframe;
+    values: Array<string>;
+    declarations: Array<CssDeclarationAST | CssCommentAST>;
+};
+type CssLayerAST = CssCommonPositionAST & {
+    type: CssTypes.layer;
+    layer: string;
+    rules?: Array<CssAtRuleAST>;
+};
+type CssMediaAST = CssCommonPositionAST & {
+    type: CssTypes.media;
+    media: string;
+    rules: Array<CssAtRuleAST>;
+};
+type CssNamespaceAST = CssCommonPositionAST & {
+    type: CssTypes.namespace;
+    namespace: string;
+};
+type CssPageAST = CssCommonPositionAST & {
+    type: CssTypes.page;
+    selectors: Array<string>;
+    declarations: Array<CssDeclarationAST | CssCommentAST>;
+};
+type CssSupportsAST = CssCommonPositionAST & {
+    type: CssTypes.supports;
+    supports: string;
+    rules: Array<CssAtRuleAST>;
+};
+type CssStartingStyleAST = CssCommonPositionAST & {
+    type: CssTypes.startingStyle;
+    rules: Array<CssAtRuleAST>;
+};
+type CssAtRuleAST = CssRuleAST | CssCommentAST | CssContainerAST | CssCharsetAST | CssCustomMediaAST | CssDocumentAST | CssFontFaceAST | CssHostAST | CssImportAST | CssKeyframesAST | CssLayerAST | CssMediaAST | CssNamespaceAST | CssPageAST | CssSupportsAST | CssStartingStyleAST;
+type CssAllNodesAST = CssAtRuleAST | CssStylesheetAST | CssDeclarationAST | CssKeyframeAST;
+
+type CompilerOptions = {
+    indent?: string;
+    compress?: boolean;
+};
+
+declare const parse: (css: string, options?: {
+    source?: string;
+    silent?: boolean;
+}) => CssStylesheetAST;
+declare const stringify: (node: CssStylesheetAST, options?: CompilerOptions) => string;
+
+declare const _default: {
+    parse: (css: string, options?: {
+        source?: string;
+        silent?: boolean;
+    }) => CssStylesheetAST;
+    stringify: (node: CssStylesheetAST, options?: CompilerOptions) => string;
+};
+
+export { CssTypes, _default as default, parse, stringify };
+export type { CssAllNodesAST, CssAtRuleAST, CssCharsetAST, CssCommentAST, CssCommonAST, CssCommonPositionAST, CssContainerAST, CssCustomMediaAST, CssDeclarationAST, CssDocumentAST, CssFontFaceAST, CssHostAST, CssImportAST, CssKeyframeAST, CssKeyframesAST, CssLayerAST, CssMediaAST, CssNamespaceAST, CssPageAST, CssRuleAST, CssStartingStyleAST, CssStylesheetAST, CssSupportsAST };