Large World graph, agent platform, brain stack & dashboard rebuild

Frontend
- Large World: collapse org/company/team tiers into one expandable React Flow
  hierarchy (WorldFlow) with per-click expand, persisted node positions, a
  compact tree sidebar, wrench multi-select delete across levels, and a sized
  right slide-out (phone/tablet/full) showing an agent summary + drill button.
- Agent page: GitHub-style animated contribution grid (VitalsCard), collapsible
  System Prompt + Personality cards, restructured anatomy cards, bigger avatar
  with name/title header row, Markdown/JSON-aware rendering, brain registry +
  history, avatar generate/upload.
- User-icon menu (Infrastructure/Brains/Tools/Profile/Credits) + ToolPanel;
  Master Planner deploy wizard (Specialists/Swarm/Scheduled/Triggered);
  Team Runs view; reap-progress modal; dashboard is the single live interface.

Backend
- cm-brain crate (.brain as the agent definition) + brain apply/history.
- Hard-purge reap (FK-ordered) + sandbox release + SSE batch-delete.
- Swarm self-verifying loop, mode-aware planner, web.search tool, webhooks
  (migration 0013), org/company/team delete endpoints, scheduler sweeps.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

crates/cm-db/src/repo/orgs.rs

@@ -146,3 +146,21 @@ pub async fn companies_for_org(pool: &PgPool, org_id: Uuid) -> Result<Vec<OrgCom
         })
         .collect())
 }
+
+/// Delete an org. Structural only: the `org_companies` links are removed
+/// (cascade) so the companies survive, just ungrouped from this org.
+pub async fn delete_org(pool: &PgPool, id: Uuid, workspace_id: WorkspaceId) -> Result<(), DbError> {
+    sqlx::query("DELETE FROM org_companies WHERE org_id = $1")
+        .bind(id)
+        .execute(pool)
+        .await?;
+    let res = sqlx::query("DELETE FROM orgs WHERE id = $1 AND workspace_id = $2")
+        .bind(id)
+        .bind(workspace_id.as_uuid())
+        .execute(pool)
+        .await?;
+    if res.rows_affected() == 0 {
+        return Err(DbError::NotFound);
+    }
+    Ok(())
+}