Replace 16 interactive UI setup commands with pre-written profrc file
containing [ui] and [notifications] sections (~1800ms saved per test).

Replace sleep(1) + blocking waitpid with close(pty fd) → SIGHUP →
polling waitpid(WNOHANG) → SIGTERM/SIGKILL fallback chain (~4900ms
saved per test).

Remove post-stbbr_start() and post-stbbr_stop() sleeps — bind+listen
completes synchronously before stbbr_start() returns, and
pthread_join() in stbbr_stop() guarantees socket cleanup (~200ms saved).

Add PORTS_PER_GROUP=50 isolated port ranges per test group to enable
safe parallel execution of 4 groups without port conflicts.

@@ -248,4 +249,1 @@
     
-    /* Calculate port base: each build uses a different range of TEST_GROUPS ports.
-     * Build 0 (local/default): 5230-5233, Full: 5230-5233, Minimal: 5234-5237, etc.
-     * Build 0 and Full share the same range because build 0 is for local runs or sequential run (no parallel builds),

@@ -315,38 +317,42 @@ init_prof_test(void **state)
     _create_chatlogs_dir();
     _create_logs_dir();
 
+    /* Pre-write profrc with all UI settings that were previously set via

@@ -362,1 +369,4 @@
         fd = 0;
+        /* Poll for exit — typically completes in <100ms */
+        int exited = 0;
+        for (int i = 0; i < 100; i++) { /* 100 × 50ms = 5s max */

@@ -363,0 +374,4 @@
+                exited = 1;
+                break;
+            }
+            usleep(50000); /* 50ms */

@@ -378,3 +401,1 @@
-     * See: https://git.jabber.space/devs/stabber/issues/3
-     */
-    usleep(100000);  // 100ms
+    /* No sleep needed: stbbr_stop() calls pthread_join() which blocks until

@@ -493,3 +542,3 @@
     prof_input("password");
 
-    expect_timeout = 60;
+    expect_timeout = EXPECT_TIMEOUT_CONNECT;