feat: initial CodeBoard monorepo scaffold

Turborepo monorepo with npm workspaces:
- apps/web: Next.js 14 frontend with Tailwind v4, SSE progress, doc viewer
- apps/worker: BullMQ job processor (clone → parse → LLM generate)
- packages/shared: TypeScript types
- packages/parser: Babel-based AST parser (JS/TS) + regex (Python)
- packages/llm: OpenAI/Anthropic provider abstraction + prompt pipeline
- packages/diagrams: Mermaid architecture & dependency graph generators
- packages/database: Prisma schema (PostgreSQL)
- Docker multi-stage build (web + worker targets)

All packages compile successfully with tsc and next build.

packages/shared/src/index.ts

@@ -0,0 +1,24 @@
+export type {
+  CloneResult,
+  CloneMetadata,
+  FileNode,
+  FunctionNode,
+  ClassNode,
+  ClassProperty,
+  ImportNode,
+  ExportNode,
+  CodeStructure,
+  ModuleNode,
+  DetectedPattern,
+  DependencyEdge,
+  GeneratedDocs,
+  DocsOverview,
+  DocsModule,
+  DocsPatterns,
+  DocsGettingStarted,
+  Generation,
+  GenerationStatus,
+  LLMMessage,
+  LLMOptions,
+  LLMProviderConfig,
+} from "./types.js";

packages/shared/src/types.ts

@@ -0,0 +1,185 @@
+// ── Repository Cloning ──────────────────────────────────────────────
+
+export interface CloneMetadata {
+  name: string;
+  description: string;
+  defaultBranch: string;
+  languages: Record<string, number>;
+  stars: number;
+  lastCommit: string;
+  totalFiles: number;
+  totalLines: number;
+}
+
+export interface CloneResult {
+  localPath: string;
+  metadata: CloneMetadata;
+}
+
+// ── AST Parsing ─────────────────────────────────────────────────────
+
+export interface FunctionNode {
+  name: string;
+  params: string[];
+  returnType?: string;
+  lineStart: number;
+  lineEnd: number;
+  docstring?: string;
+  calls: string[];
+}
+
+export interface ClassProperty {
+  name: string;
+  type?: string;
+}
+
+export interface ClassNode {
+  name: string;
+  methods: FunctionNode[];
+  properties: ClassProperty[];
+}
+
+export interface ImportNode {
+  source: string;
+  specifiers: string[];
+}
+
+export interface ExportNode {
+  name: string;
+  isDefault: boolean;
+}
+
+export interface FileNode {
+  path: string;
+  language: string;
+  size: number;
+  functions: FunctionNode[];
+  classes: ClassNode[];
+  imports: ImportNode[];
+  exports: ExportNode[];
+  complexity: number;
+}
+
+export interface ModuleNode {
+  name: string;
+  path: string;
+  files: string[];
+  summary?: string;
+}
+
+export interface DetectedPattern {
+  name: string;
+  description: string;
+  examples: string[];
+}
+
+export interface DependencyEdge {
+  source: string;
+  target: string;
+  type: "import" | "call" | "extends";
+}
+
+export interface CodeStructure {
+  files: FileNode[];
+  modules: ModuleNode[];
+  entryPoints: string[];
+  exports: ExportNode[];
+  dependencies: DependencyEdge[];
+  patterns: DetectedPattern[];
+}
+
+// ── Generated Documentation ─────────────────────────────────────────
+
+export interface DocsOverview {
+  title: string;
+  description: string;
+  architectureDiagram: string;
+  techStack: string[];
+  keyMetrics: {
+    files: number;
+    modules: number;
+    languages: string[];
+  };
+}
+
+export interface DocsModule {
+  name: string;
+  path: string;
+  summary: string;
+  keyFiles: Array<{ path: string; purpose: string }>;
+  publicApi: string[];
+  dependsOn: string[];
+  dependedBy: string[];
+}
+
+export interface DocsPatterns {
+  conventions: string[];
+  designPatterns: string[];
+  architecturalDecisions: string[];
+}
+
+export interface DocsGettingStarted {
+  prerequisites: string[];
+  setupSteps: string[];
+  firstTask: string;
+}
+
+export interface GeneratedDocs {
+  id: string;
+  repoUrl: string;
+  repoName: string;
+  generatedAt: string;
+  sections: {
+    overview: DocsOverview;
+    modules: DocsModule[];
+    patterns: DocsPatterns;
+    gettingStarted: DocsGettingStarted;
+    dependencyGraph: string;
+  };
+}
+
+// ── Generation State ────────────────────────────────────────────────
+
+export type GenerationStatus =
+  | "QUEUED"
+  | "CLONING"
+  | "PARSING"
+  | "GENERATING"
+  | "RENDERING"
+  | "COMPLETED"
+  | "FAILED";
+
+export interface Generation {
+  id: string;
+  repoUrl: string;
+  repoName: string;
+  commitHash: string;
+  status: GenerationStatus;
+  progress: number;
+  result: GeneratedDocs | null;
+  error: string | null;
+  costUsd: number | null;
+  duration: number | null;
+  createdAt: string;
+  viewCount: number;
+}
+
+// ── LLM Configuration ───────────────────────────────────────────────
+
+export interface LLMMessage {
+  role: "system" | "user" | "assistant";
+  content: string;
+}
+
+export interface LLMOptions {
+  temperature?: number;
+  maxTokens?: number;
+  model?: string;
+}
+
+export interface LLMProviderConfig {
+  provider: "openai" | "anthropic";
+  apiKey: string;
+  model?: string;
+  baseUrl?: string;
+}