feat: add realtime pod activity streams

shared/src/activity.ts

@@ -0,0 +1,19 @@
+export type PodActivityKind = 'observation' | 'git' | 'collision' | 'intervention' | 'outcome';
+
+export type PodActivitySource = 'vision' | 'git' | 'memory' | 'hermes' | 'policy';
+
+export type PodActivitySeverity = 'info' | 'warn' | 'critical' | 'success';
+
+export interface PodActivityEvent {
+  id: string;
+  podId: string;
+  kind: PodActivityKind;
+  source: PodActivitySource;
+  title: string;
+  detail?: string;
+  actor?: string;
+  actors?: string[];
+  file?: string;
+  severity: PodActivitySeverity;
+  at: string;
+}

shared/src/index.ts

@@ -1,5 +1,11 @@
 export type { Pod, PodInput, Engineer } from './pod.js';
 export type { EngineerContext } from './engineer.js';
+export type {
+  PodActivityEvent,
+  PodActivityKind,
+  PodActivitySeverity,
+  PodActivitySource,
+} from './activity.js';
 export type { Collision, CollisionSeverity, GithubStateSnapshot } from './collision.js';
 export type {
   Intervention,