Content inspection and archive walks on seeding nodes (relay)

Inspection is split into prepare (database), probe (lib/content/probe:
downloads, decoding and parsing, no database) and apply (database).
worker:collection runs all three; seed:node with SEED_INSPECTORS leases
jobs from the same queues through the seed API (BullMQ manual leases),
fetches articles through the seed API and posts the probes back.

A node now needs only SEED_URL and SEED_TOKEN: the settings the app
requires but a node never uses get placeholders for seed:node.

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

commands/workers/Collection.ts

@@ -6,7 +6,7 @@ import env from '#start/env'
 import Shutdown from '#services/Shutdown'
 import QueueService from '#services/QueueService'
 import NntpService from '#services/NntpService'
-import ContentService from '#services/ContentService'
+import ContentService, { describeContent } from '#services/ContentService'
 import ArchiveWalkService from '#services/ArchiveWalkService'
 import File from '#models/file'
 
@@ -33,31 +33,7 @@ export default class CollectionWorker extends BaseCommand {
 
       try {
         const content = await ContentService.inspect(fileId)
-        if (content?.par2) {
-          const { par2 } = content
-          this.logger.info(`Par2 "${file.filename}": release "${par2.releaseName}", ${par2.listed} files listed.`)
-        } else if (content?.archive) {
-          const { info, releaseRenamed, grouped } = content.archive
-          const flags = [info.headersEncrypted && 'encrypted headers', info.entries.some((e) => e.encrypted) && 'encrypted files']
-            .filter(Boolean)
-            .join(', ')
-          this.logger.info(
-            `Archive "${file.filename}": ${info.format}, ${info.entries.length} entries${flags ? ` (${flags})` : ''}` +
-              (grouped ? ', grouped into a release' : '') +
-              (releaseRenamed ? `, release renamed to "${releaseRenamed}"` : '')
-          )
-        }
-        if (content?.named) this.logger.info(`"${file.filename}" got its real name from par2.`)
-        if (content?.contentType === 'nzbe') this.logger.info(`"${file.filename}" is an encrypted NZB container.`)
-        if (content?.contentType === 'rclone') this.logger.info(`"${file.filename}" is rclone-encrypted.`)
-        if (content?.yencName) this.logger.info(`"${file.filename}" is "${content.yencName}" (yEnc name).`)
-        if (content?.nicovideo) this.logger.info(`"${file.filename}" → "${content.nicovideo}".`)
-        if (content?.sfvMoved) this.logger.info(`SFV "${file.filename}" moved ${content.sfvMoved} files into its release.`)
-        if (content?.contentType === 'yencbin') this.logger.info(`"${file.filename}" is a yEncBin encrypted container.`)
-        if (content?.nzb) {
-          const n = content.nzb
-          this.logger.info(`NZB "${file.filename}": ${n.listed} files (${n.known} known, ${n.added} added) → "${n.releaseName}".`)
-        }
+        for (const line of describeContent(file.filename, content)) this.logger.info(line)
       } catch (error: any) {
         this.logger.warning(`Content inspection of "${file.filename}" failed: ${error.message}`)
       }