wip: convert all actors from workflow to plain run handlers

Workaround for RivetKit bug where c.queue.iter() never yields messages
for actors created via getOrCreate from another actor's context. The
queue accepts messages (visible in inspector) but the iterator hangs.
Sleep/wake fixes it, but actors with active connections never sleep.

Converted organization, github-data, task, and user actors from
run: workflow(...) to plain run: async (c) => { for await ... }.

Also fixes:
- Missing auth tables in org migration (auth_verification etc)
- default_model NOT NULL constraint on org profile upsert
- Nested workflow step in github-data (HistoryDivergedError)
- Removed --force from frontend Dockerfile pnpm install

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

foundry/packages/shared/src/workspace.ts

@@ -174,12 +174,27 @@ export interface OrganizationGithubSummary {
   totalRepositoryCount: number;
 }
 
+export interface WorkspaceOpenPullRequest {
+  repoId: string;
+  repoFullName: string;
+  number: number;
+  title: string;
+  status: string;
+  state: string;
+  url: string;
+  headRefName: string;
+  baseRefName: string;
+  authorLogin: string | null;
+  isDraft: boolean;
+}
+
 /** Organization-level snapshot — initial fetch for the organization topic. */
 export interface OrganizationSummarySnapshot {
   organizationId: string;
   github: OrganizationGithubSummary;
   repos: WorkspaceRepositorySummary[];
   taskSummaries: WorkspaceTaskSummary[];
+  openPullRequests?: WorkspaceOpenPullRequest[];
 }
 
 export interface WorkspaceSession extends WorkspaceSessionSummary {