Merge branch 'feat/plugin-acquire-lease-agent-id' into dev

Thread agentId into PluginEnvironmentAcquireLeaseParams + host call sites
so plugin-backed sandbox providers (e.g. paperclip-plugin-k8s) can scope
lease state per-agent without needing an SDK callback or DB lookup.

server/src/routes/agents.ts

@@ -319,6 +319,7 @@ export function agentRoutes(
         companyId: input.companyId,
         environment,
         issueId: null,
+        agentId: null,
         heartbeatRunId: null,
         persistedExecutionWorkspace: null,
       });