Raise agent heartbeat concurrency default

Co-Authored-By: Paperclip <noreply@paperclip.ing>

doc/SPEC-implementation.md

@@ -676,7 +676,7 @@ Per-agent schedule fields in `adapter_config`:
 
 - `enabled` boolean
 - `intervalSec` integer (minimum 30)
-- `maxConcurrentRuns` integer; new agents default to `5`
+- `maxConcurrentRuns` integer; new agents default to `20`
 
 Scheduler must skip invocation when:
 

packages/shared/src/constants.ts

@@ -72,7 +72,7 @@ export const AGENT_ROLE_LABELS: Record<AgentRole, string> = {
   general: "General",
 };
 
-export const AGENT_DEFAULT_MAX_CONCURRENT_RUNS = 5;
+export const AGENT_DEFAULT_MAX_CONCURRENT_RUNS = 20;
 export const WORKSPACE_BRANCH_ROUTINE_VARIABLE = "workspaceBranch";
 
 export const MODEL_PROFILE_KEYS = ["cheap"] as const;

server/src/__tests__/agent-permissions-routes.test.ts

@@ -901,7 +901,7 @@ describe.sequential("agent permission routes", () => {
           heartbeat: {
             enabled: false,
             intervalSec: 3600,
-            maxConcurrentRuns: 5,
+            maxConcurrentRuns: 20,
           },
         },
       }),
@@ -939,7 +939,7 @@ describe.sequential("agent permission routes", () => {
           heartbeat: {
             enabled: false,
             intervalSec: 3600,
-            maxConcurrentRuns: 5,
+            maxConcurrentRuns: 20,
           },
         },
       }),

server/src/__tests__/company-portability.test.ts

@@ -2158,7 +2158,7 @@ describe("company portability", () => {
       runtimeConfig: {
         heartbeat: {
           enabled: false,
-          maxConcurrentRuns: 5,
+          maxConcurrentRuns: 20,
         },
       },
     });
@@ -2237,7 +2237,7 @@ describe("company portability", () => {
       runtimeConfig: {
         heartbeat: {
           enabled: false,
-          maxConcurrentRuns: 5,
+          maxConcurrentRuns: 20,
         },
       },
     }));

server/src/services/heartbeat.ts

@@ -145,7 +145,7 @@ const MAX_RUN_EVENT_PAYLOAD_OBJECT_KEYS = 100;
 const MAX_RUN_EVENT_PAYLOAD_DEPTH = 6;
 const HEARTBEAT_MAX_CONCURRENT_RUNS_DEFAULT = AGENT_DEFAULT_MAX_CONCURRENT_RUNS;
 const HEARTBEAT_MAX_CONCURRENT_RUNS_MIN = 1;
-const HEARTBEAT_MAX_CONCURRENT_RUNS_MAX = 10;
+const HEARTBEAT_MAX_CONCURRENT_RUNS_MAX = 20;
 const LIVENESS_BOOKKEEPING_ACTIVITY_ACTIONS = [
   "environment.lease_acquired",
   "environment.lease_released",