[codex] Improve agent runtime recovery and governance (#4086)

## Thinking Path

> - Paperclip orchestrates AI agents for zero-human companies.
> - The heartbeat runtime, agent import path, and agent configuration
defaults determine whether work is dispatched safely and predictably.
> - Several accumulated fixes all touched agent execution recovery, wake
routing, import behavior, and runtime concurrency defaults.
> - Those changes need to land together so the heartbeat service and
agent creation defaults stay internally consistent.
> - This pull request groups the runtime/governance changes from the
split branch into one standalone branch.
> - The benefit is safer recovery for stranded runs, bounded high-volume
reads, imported-agent approval correctness, skill-template support, and
a clearer default concurrency policy.

## What Changed

- Fixed stranded continuation recovery so successful automatic retries
are requeued instead of incorrectly blocking the issue.
- Bounded high-volume issue/log reads across issue, heartbeat, agent,
project, and workspace paths.
- Fixed imported-agent approval and instruction-path permission
handling.
- Quarantined seeded worktree execution state during worktree
provisioning.
- Queued approval follow-up wakes and hardened SQL_ASCII heartbeat
output handling.
- Added reusable agent instruction templates for hiring flows.
- Set the default max concurrent agent runs to five and updated related
UI/tests/docs.

## Verification

- `pnpm install --frozen-lockfile`
- `pnpm exec vitest run server/src/__tests__/company-portability.test.ts
server/src/__tests__/heartbeat-process-recovery.test.ts
server/src/__tests__/heartbeat-comment-wake-batching.test.ts
server/src/__tests__/heartbeat-list.test.ts
server/src/__tests__/issues-service.test.ts
server/src/__tests__/agent-permissions-routes.test.ts
packages/adapter-utils/src/server-utils.test.ts
ui/src/lib/new-agent-runtime-config.test.ts`
- Split integration check: merged this branch first, followed by the
other [PAP-1614](/PAP/issues/PAP-1614) branches, with no merge
conflicts.
- Confirmed this branch does not include `pnpm-lock.yaml`.

## Risks

- Medium risk: touches heartbeat recovery, queueing, and issue list
bounds in central runtime paths.
- Imported-agent and concurrency default behavior changes may affect
existing automation that assumes one-at-a-time default runs.
- No database migrations are included.

> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.

## Model Used

- OpenAI Codex, GPT-5.4 tool-enabled coding model, agentic
code-editing/runtime with local shell and GitHub CLI access; exact
context window and reasoning mode are not exposed by the Paperclip
harness.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge

---------

Co-authored-by: Paperclip <noreply@paperclip.ing>

ui/src/pages/AgentDetail.tsx

@@ -762,12 +762,13 @@ export function AgentDetail() {
   }, [agent?.companyId, selectedCompanyId, setSelectedCompanyId]);
 
   const agentAction = useMutation({
-    mutationFn: async (action: "invoke" | "pause" | "resume" | "terminate") => {
+    mutationFn: async (action: "invoke" | "pause" | "resume" | "approve" | "terminate") => {
       if (!agentLookupRef) return Promise.reject(new Error("No agent reference"));
       switch (action) {
         case "invoke": return agentsApi.invoke(agentLookupRef, resolvedCompanyId ?? undefined);
         case "pause": return agentsApi.pause(agentLookupRef, resolvedCompanyId ?? undefined);
         case "resume": return agentsApi.resume(agentLookupRef, resolvedCompanyId ?? undefined);
+        case "approve": return agentsApi.approve(agentLookupRef, resolvedCompanyId ?? undefined);
         case "terminate": return agentsApi.terminate(agentLookupRef, resolvedCompanyId ?? undefined);
       }
     },
@@ -1021,9 +1022,18 @@ export function AgentDetail() {
 
       {actionError && <p className="text-sm text-destructive">{actionError}</p>}
       {isPendingApproval && (
-        <p className="text-sm text-amber-500">
-          This agent is pending board approval and cannot be invoked yet.
-        </p>
+        <div className="flex flex-wrap items-center gap-3 rounded-md border border-amber-300/60 bg-amber-50 px-3 py-2 text-sm text-amber-900 dark:border-amber-400/40 dark:bg-amber-950/30 dark:text-amber-200">
+          <span>This agent is pending board approval and cannot be invoked yet.</span>
+          <Button
+            variant="outline"
+            size="sm"
+            onClick={() => agentAction.mutate("approve")}
+            disabled={agentAction.isPending}
+          >
+            <CheckCircle2 className="h-3.5 w-3.5 sm:mr-1" />
+            <span>Approve agent</span>
+          </Button>
+        </div>
       )}
 
       {/* Floating Save/Cancel (desktop) */}