Spotnet import, header backfill, staging and counter grouping, faster search

Spotnet (CONCEPT D29):
- Index free.pt fully and import spots with their descriptions, categories
  and NZBs; a spot renames its release, since Spotnet names are more
  trustworthy than names derived from subjects.
- Find passwords in spot descriptions too, and tell "needs a password we
  have" from "needs a password we don't have".

Content inspection:
- List the contents of 7z (.7z.001) archives, SFV sets, nicovideo uploads
  and other archive-like files; mark yEncBin .bin containers as encrypted.
- Take real names from yEnc headers for randomly named files, and merge
  uploads that were split across posts.

Storage (D31, D32):
- Store segment lists zstd-compressed behind the FileStore accessor.
- group:backfill indexes older headers at low priority and pauses when
  the NVMe or HDD part of the database gets too large.

Grouping (D35, D36):
- Lone header segments wait in staged_segments until a second segment of
  their file arrives, which drops the per-article junk binaries.
- Counter grouping joins random-subject uploads by poster, [i/M] counter,
  part count and day.

Search and maintenance (D33, D34):
- A trigram-indexed search_text column, smaller indexes, estimated stats.
- Passes that clean up nonsense names; weekly index maintenance; GC budgets
  per kind.
- Web UI: grey out stale results while a search runs and cancel superseded
  requests. Count only up to 1,000 matches for the page, which made filter
  clicks take seconds (Newznab keeps the 10,000 cap).

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

commands/workers/File.ts

@@ -2,6 +2,9 @@ import { BaseCommand } from '@adonisjs/core/ace'
 import { CommandOptions } from '@adonisjs/core/types/ace'
 import { Worker } from 'bullmq'
 import db from '@adonisjs/lucid/services/db'
+import env from '#start/env'
+import FileStore from '#services/FileStore'
+import SfvService from '#services/SfvService'
 import queueConfig from '#config/queue'
 import Shutdown from '#services/Shutdown'
 import QueueService from '#services/QueueService'
@@ -42,15 +45,10 @@ export default class FileWorker extends BaseCommand {
         throw new Error(`Binary ${binaryId} has ${parts.length}/${binary.total_parts} parts.`)
       }
 
-      const messageIds = Object.fromEntries(
-        parts.map((part) => [part.number, { id: part.message_id, size: part.bytes }])
-      )
+      const segments = parts.map((part) => ({ number: Number(part.number), id: part.message_id, size: Number(part.bytes) }))
 
       // Already known as a file, e.g. added from a posted NZB before its own articles completed.
-      const existing = await db
-        .from('files')
-        .whereRaw(`(message_ids->'1'->>'id') = ?`, [messageIds['1']?.id ?? ''])
-        .first()
+      const existing = await db.from('files').where('first_message_id', segments[0]?.id ?? '').first()
       if (existing) {
         await db.from('binaries').where('id', binaryId).update({ file_id: existing.id })
         await dropCopiedParts(binary)
@@ -59,26 +57,23 @@ export default class FileWorker extends BaseCommand {
       }
 
       // file_key is unique: a second completion of the same upload inserts nothing.
-      const knex = db.connection().getWriteClient()
       const now = new Date()
-      const [inserted] = await knex('files')
-        .insert({
+      const [inserted] = await FileStore.insert([
+        {
           file_key: binary.file_key,
           filename: binary.name,
           poster: binary.poster,
           date: binary.posted_at ? new Date(binary.posted_at).getTime() : now.getTime(),
           parts: parts.length,
-          message_ids: JSON.stringify(messageIds),
+          segments,
           groups: JSON.stringify(binary.groups),
           release_id: binary.release_id,
           real_name: binary.real_name,
           size: parts.reduce((sum, part) => sum + Number(part.bytes), 0),
           created_at: now,
           updated_at: now,
-        })
-        .onConflict('file_key')
-        .ignore()
-        .returning('id')
+        },
+      ])
 
       const fileId =
         inserted?.id ?? (await db.from('files').where('file_key', binary.file_key).first())?.id
@@ -91,8 +86,21 @@ export default class FileWorker extends BaseCommand {
       }
 
       this.logger.info(`Saved file "${binary.name}" (${parts.length} parts) as ID ${fileId}.`)
+      // An SFV posted earlier may already list it (D34).
+      await SfvService.claim({
+        id: Number(fileId),
+        name: binary.real_name ?? binary.name,
+        poster: binary.poster,
+        date: binary.posted_at ? new Date(binary.posted_at).getTime() : null,
+        release_id: binary.release_id,
+      })
       await collectionQueue.add('process-collection', { fileId }, { jobId: `file-${fileId}` })
-    }, { connection: queueConfig.connection })
+    }, {
+      connection: queueConfig.connection,
+      // One job at a time could not keep up with the backfill (130k waiting); jobs are per binary and
+      // the file insert ignores duplicates, so they can run side by side.
+      concurrency: env.get('FILE_CONCURRENCY', 8),
+    })
 
     worker.on('failed', (job, err) => {
       this.logger.error(`File job ${job?.id} failed: ${err.message}`)
@@ -112,6 +120,13 @@ export default class FileWorker extends BaseCommand {
  * ones keep them, so articles of an equal-sized next volume are recognised
  * as a conflict and split off (CONCEPT.md D20). LOG.md 2026-09-28 (17).
  */
-async function dropCopiedParts(binary: { id: number; size: number | null }) {
-  if (binary.size === null) await db.from('parts').where('binary_id', binary.id).delete()
+/**
+ * The file holds the segment list now. Header-derived parts (no per-part
+ * CRC) aren't needed any more; body-derived ones are kept for split-volume
+ * verification (D20). Going by the CRC, not the binary's size: content
+ * inspection gives header-derived binaries a size too, which kept ~20M
+ * parts around (LOG.md 2026-10-02).
+ */
+async function dropCopiedParts(binary: { id: number }) {
+  await db.from('parts').where('binary_id', binary.id).whereNull('pcrc32').delete()
 }