Add resumable US policy news collectors and provenance

Collect official crypto and US policy documents with deterministic screening, full bodies and attachments, bounded retries, and durable history cursors. Preserve publication precision and source identity while keeping new collectors disabled.

Add real Congress, GovInfo, DOJ and Federal Register fixtures, offline capture replay, isolated database validation, and rollout instructions. Validate 982 backend tests, frontend checks, and 57 deployment control tests.

web/src/common/apis/crawler/type.ts

@@ -17,6 +17,9 @@ export interface SourceInfo {
   last_success_at: string | null
   last_error: string | null
   paused_until: string | null
+  collection_stats?: Record<string, number>
+  configuration_error?: string | null
+  history_cursor?: { history?: { scanned?: boolean }, realtime?: { entry: number } }
   supports_history: boolean
   history_target: string | null
   history_position: string | null

web/src/common/apis/news/type.ts

@@ -8,6 +8,8 @@ export interface NewsBrief {
   author: string | null
   tags: string[]
   is_paywalled: boolean
+  published_at_precision?: string | null
+  published_date?: string | null
   published_at: string
   first_seen_at: string
   revision_no: number