Spots: more password phrasings; read listed spots' articles and NZBs

passwordFromSpot finds 30 more passwords in the stored descriptions (480
→ 510): words between keyword and separator, trailing "!!", the value on
the next line, "wachtwoord is x", "… wachtwoord. Deze is: x", "WW x" as a
whole line.

Listed spots were read from their overview only, so the NZB's own
password and the description were unknown for 2.27M of them.
SpotService.readListing reads the spot's article and NZB without
importing files: details, the NZB password (over a spot-text one), the
spot-text password, placeholder NZBs. worker:spots does a batch when
idle; spot:postprocess works through the history (nzb_read_at).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

database/schema.ts

@@ -601,7 +601,7 @@ export class SignatureProbeSchema extends BaseModel {
 }
 
 export class SpotSchema extends BaseModel {
-  static $columns = ['articleNumber', 'category', 'createdAt', 'description', 'detailsAt', 'error', 'groupName', 'image', 'keyId', 'messageId', 'postedAt', 'poster', 'processedAt', 'releaseId', 'size', 'spotterId', 'status', 'subcats', 'tag', 'title', 'verified', 'website'] as const
+  static $columns = ['articleNumber', 'category', 'createdAt', 'description', 'detailsAt', 'error', 'groupName', 'image', 'keyId', 'messageId', 'nzbReadAt', 'postedAt', 'poster', 'processedAt', 'releaseId', 'size', 'spotterId', 'status', 'subcats', 'tag', 'title', 'verified', 'website'] as const
   $columns = SpotSchema.$columns
   @column()
   declare articleNumber: bigint | number | null
@@ -624,6 +624,8 @@ export class SpotSchema extends BaseModel {
   @column({ isPrimary: true })
   declare messageId: string
   @column.dateTime()
+  declare nzbReadAt: DateTime | null
+  @column.dateTime()
   declare postedAt: DateTime | null
   @column()
   declare poster: string