Server core: config, GitHub GraphQL polling, SQLite persistence, timeline ingestion

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DgBEW6qAwgn2fcQbA2f4ZQ

shared/types.ts

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+export type CheckCategory = 'lint' | 'specs' | 'e2e' | 'other';
+
+export type CategoryState = 'fail' | 'running' | 'pending' | 'pass' | 'skipped' | 'none';
+
+export interface CheckInfo {
+  name: string;
+  state: CategoryState;
+  url: string | null;
+}
+
+export interface CategoryStatus {
+  category: CheckCategory;
+  state: CategoryState;
+  passed: number;
+  /** Non-skipped check count (drives the "7/9" chip summary). */
+  total: number;
+  checks: CheckInfo[];
+}
+
+export type ReviewState = 'no_review' | 'outstanding' | 'addressed';
+
+export interface ReviewerVerdict {
+  reviewer: string;
+  state: 'APPROVED' | 'CHANGES_REQUESTED';
+  url: string;
+  submittedAt: string;
+}
+
+export interface PrSnapshot {
+  id: string;
+  repo: string;
+  number: number;
+  title: string;
+  url: string;
+  author: string;
+  isDraft: boolean;
+  branch: string;
+  updatedAt: string;
+  reviewState: ReviewState;
+  unresolvedThreads: number;
+  totalThreads: number;
+  verdicts: ReviewerVerdict[];
+  categories: CategoryStatus[];
+}
+
+export type TimelineKind = 'issue_comment' | 'review_comment' | 'review';
+
+export interface TimelineEvent {
+  id: string;
+  prId: string;
+  repo: string;
+  prNumber: number;
+  prTitle: string;
+  kind: TimelineKind;
+  actor: string;
+  createdAt: string;
+  bodyExcerpt: string;
+  url: string;
+  reviewState: string | null;
+  path: string | null;
+  read: boolean;
+}
+
+export interface StatePayload {
+  prs: PrSnapshot[];
+  lastSyncAt: string | null;
+  lastSyncError: string | null;
+  unreadCountsByPr: Record<string, number>;
+  unreadTotal: number;
+}
+
+export interface TimelinePage {
+  events: TimelineEvent[];
+  nextCursor: string | null;
+}
+
+export interface SyncEventPayload {
+  lastSyncAt: string | null;
+  error: string | null;
+  changedPrIds: string[];
+  newEventCount: number;
+  unreadCount: number;
+}