tests: match task names by basename; path-tolerant harness regexes

processRunning compared literal names against task names that are now
full binary paths; the acpi-ps2/usb-report harness regexes assumed
unprefixed driver names in device-manager spawn/restart lines.

system/kernel/tests.zig

@@ -3242,7 +3242,8 @@ fn processRunning(name: []const u8) bool {
     var table: [64]abi.ProcessDescriptor = undefined;
     const total = scheduler.enumerate(&table);
     for (table[0..@min(total, table.len)]) |d| {
-        if (std.mem.eql(u8, d.name[0..d.name_length], name)) return true;
+        // Task names are full binary paths; callers pass either form.
+        if (std.mem.eql(u8, initial_ramdisk.basename(d.name[0..d.name_length]), name)) return true;
     }
     return false;
 }

test/qemu_test.py

@@ -527,7 +527,7 @@ CASES = [
      "smp":    4,
      "timeout": 150,
      "expect": r"acpi: reported PNP0303[\s\S]*"
-               r"device-manager: spawned ps2-bus[\s\S]*"
+               r"device-manager: spawned \S*ps2-bus[\s\S]*"
                r"ps2-bus: keyboard driver attached",
      "fail":   r"DANOS-TEST-RESULT: FAIL"},
     # M21.1: the SCI + power button. Boot the manager (which spawns the acpi