feat(server,contracts,web): dashboard library counts and engine runs triggeredBy/multi-status filters

- GET /dashboard: automation.library {entities, movies, series, seasons,
  episodes, assets} and automation.slotSatisfiedRate; home media overview
  shows the counts instead of placeholders.
- GET /engine/runs: `status` accepts comma-separated values; new
  `triggeredBy` filter (comma-separated) evaluated server-side by scanning
  batches and paging with the last inspected row's cursor (scan cap 2000).
- Task stream: source filter and the "active" tab (running,pending) are now
  one paginated server query.

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

packages/contracts/src/ops.ts

@@ -208,6 +208,28 @@ export type AuditEventQuery = z.infer<typeof AuditEventQuery>;
 
 // ── 引擎面板(只读直查 openworkflow schema,仅 admin;docs/design/openworkflow-dashboard-reference.md) ──
 
+/** 逗号分隔的枚举多选(查询串):`a,b` → ["a","b"],未知值报错 */
+function csvEnum<T extends string>(e: z.ZodType<T>, name: string) {
+  return z
+    .string()
+    .max(200)
+    .transform((s, ctx) => {
+      const out: T[] = [];
+      for (const p of s
+        .split(",")
+        .map((x) => x.trim())
+        .filter(Boolean)) {
+        const r = e.safeParse(p);
+        if (!r.success) {
+          ctx.addIssue({ code: "custom", message: `未知 ${name}: ${p}` });
+          return z.NEVER;
+        }
+        if (!out.includes(r.data)) out.push(r.data);
+      }
+      return out;
+    });
+}
+
 /** 引擎 run 状态(含 legacy sleeping/succeeded) */
 export const EngineRunStatus = z.enum([
   "pending",
@@ -273,7 +295,8 @@ export type EngineRun = z.infer<typeof EngineRun>;
 export const EngineRunQuery = z.object({
   cursor: z.string().min(1).optional(),
   limit: z.coerce.number().int().min(1).max(200).default(50),
-  status: EngineRunStatus.optional(),
+  /** 单值或逗号分隔多值,如 status=running,pending */
+  status: csvEnum(EngineRunStatus, "status").optional(),
   workflowName: z.string().max(200).optional(),
   /** created_at 下界(含) */
   from: Timestamp.optional(),
@@ -283,6 +306,8 @@ export const EngineRunQuery = z.object({
   businessKind: EngineBusinessKind.optional(),
   /** 按关联业务对象 id 筛选(可与 businessKind 同用) */
   businessRefId: z.string().min(1).max(200).optional(),
+  /** 按触发来源筛选(单值或逗号分隔多值);来源在服务端逐页推断,一页可能少于 limit,以 nextCursor 为准 */
+  triggeredBy: csvEnum(EngineTriggeredBy, "triggeredBy").optional(),
 });
 export type EngineRunQuery = z.infer<typeof EngineRunQuery>;