feat(sources,organize): site agent capabilities and organize.minSizeBytes setting (W10-pre2)

- site.list / site.health_check / site.refresh_login / site.user_data capabilities
  over the W9-A site center services; outputs whitelisted (no secret refs,
  cookies, passwords, login names); execute kinds need automation grant.
  IDs use snake_case (CapabilityId regex); registry count 17 -> 21.
- settings.organize.minSizeBytes (default 50 MiB); file-manager identify /
  organize and planImport take request > setting > port default.
- tests and runbook notes (sites, files).

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/contracts/src/settings.ts

@@ -37,6 +37,8 @@ export const OrganizeSettings = z.object({
   defaultMode: OrganizeMode,
   /** 跨卷 Move 采用 Copy→核验→删源;EXDEV 不静默降级 */
   allowCrossVolumeMove: z.boolean(),
+  /** 整理 / 文件管理识别时视频文件的最小体积(字节),低于它的视为样片跳过;请求(向导)里给的值优先 */
+  minSizeBytes: z.number().int().nonnegative(),
 });
 export type OrganizeSettings = z.infer<typeof OrganizeSettings>;
 
@@ -315,7 +317,7 @@ export type SettingsKey = z.infer<typeof SettingsKey>;
 export const DEFAULT_SETTINGS: GlobalSettings = {
   automation: { enabled: true, readOnlyReconcile: false },
   cache: { hardThresholdPercent: 90, resumePercent: 85, checkIntervalSec: 60, cleanupTargetPercent: 80 },
-  organize: { defaultMode: "copy", allowCrossVolumeMove: true },
+  organize: { defaultMode: "copy", allowCrossVolumeMove: true, minSizeBytes: 50 * 1024 * 1024 },
   retention: { seedRetentionDays: 7, logRetentionDays: 180 },
   pi: {
     defaultUpstreamId: null,
@@ -548,6 +550,7 @@ export const SETTINGS_SECTIONS: readonly SettingsSectionDef[] = [
     fields: [
       "organize.defaultMode",
       "organize.allowCrossVolumeMove",
+      "organize.minSizeBytes",
       "naming.movie",
       "naming.tv",
       "naming.variety",