[orchestrator-v2] fix(orchestrator): Harden Grok v2 settlement, background task lifecycle, steer visibility, and images

.github/workflows/ci.yml

@@ -48,6 +48,16 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v6
 
+      # Blacksmith boots GitHub's Ubuntu runner image (gcc is usually present),
+      # but ACP process-tree live tests compile a small pthread fixture with `cc`
+      # and soft-skip when it is missing. Install build-essential so that path
+      # always runs in CI instead of silently no-oping.
+      - name: Install C toolchain for process-tree fixtures
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends build-essential
+          command -v cc
+
       - name: Setup Vite+
         uses: voidzero-dev/setup-vp@v1
         with:

apps/server/scripts/acp-thread-spawn-helper.c

@@ -0,0 +1,37 @@
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+static const char *pid_path;
+
+static void *spawn_child(void *unused) {
+    (void)unused;
+    pid_t child = fork();
+    if (child == 0) {
+        execlp("sleep", "sleep", "120", NULL);
+        _exit(127);
+    }
+    if (child < 0) return NULL;
+    FILE *file = fopen(pid_path, "w");
+    if (file != NULL) {
+        fprintf(file, "%ld %d\n", syscall(SYS_gettid), child);
+        fclose(file);
+    }
+    waitpid(child, NULL, 0);
+    return NULL;
+}
+
+int main(int argc, char **argv) {
+    if (argc != 2) return 2;
+    pid_path = argv[1];
+    pthread_t worker;
+    if (pthread_create(&worker, NULL, spawn_child, NULL) != 0) return 3;
+    if (pthread_join(worker, NULL) != 0) return 4;
+    return 0;
+}