feat: ship v0.3.0 with P2.1 editor polish and P3 AI collaboration

Add chapter reorder, search replace, inspiration capture, and AI chat with context editing, settings, offline handling, and naming checks. Fix dev black screen by keeping process.env reads in the main process only.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/shared/types.ts

@@ -60,6 +60,8 @@ export interface GlobalSettings {
   snapshotMaxAuto: number
   snapshotMaxPersist: number
   searchHistory: string[]
+  aiConfig: AiConfig
+  namingIgnoreWords: string[]
 }
 
 export interface BookMeta {
@@ -192,3 +194,82 @@ export interface UpdateChapterParams {
   status?: ChapterStatus
   cursorOffset?: number
 }
+
+export type AiBackend = 'lmstudio' | 'openai' | 'anthropic'
+export type AiMessageRole = 'user' | 'assistant' | 'system'
+export type AiWritingMode = 'chat' | 'interactive' | 'auto' | 'wizard'
+
+export interface AiConfig {
+  backend: AiBackend
+  baseUrl: string
+  model: string
+  apiKey?: string
+  timeoutMs: number
+  maxTokens: number
+}
+
+export const DEFAULT_AI_CONFIG: AiConfig = {
+  backend: 'lmstudio',
+  baseUrl: 'http://127.0.0.1:1234',
+  model: 'gemma-4-e4b-it',
+  timeoutMs: 60_000,
+  maxTokens: 2048
+}
+
+export interface AiContextBinding {
+  chapterIds: string[]
+  outlineIds: string[]
+  settingIds: string[]
+  inspirationIds: string[]
+}
+
+export interface AiSession {
+  id: string
+  title: string
+  model: string
+  archived: boolean
+  context: AiContextBinding
+  createdAt: string
+  updatedAt: string
+}
+
+export interface AiMessage {
+  id: string
+  sessionId: string
+  role: AiMessageRole
+  content: string
+  createdAt: string
+}
+
+export interface NamingConflict {
+  termA: string
+  termB: string
+  confidence: number
+  reason: string
+  suggestedCanonical?: string
+}
+
+export interface AiStreamChunkEvent {
+  messageId: string
+  delta: string
+  done: boolean
+}
+
+export interface AiNetworkStatusEvent {
+  online: boolean
+}
+
+export type ContextPreviewKind = 'chapter' | 'outline' | 'setting' | 'inspiration'
+
+export interface ContextPreviewItem {
+  kind: ContextPreviewKind
+  id: string
+  title: string
+  excerpt: string
+  charCount: number
+}
+
+export interface AiContextBuildResult {
+  systemPrompt: string
+  preview: ContextPreviewItem[]
+}