tests: expand battery test from 33 to 152 checks

tests: expand battery test from 33 to 152 checks

Section 1 (Full smoke + Ping + diskfs, SMP=4):
- Add all 120 smoke test patterns (was only 24)
- Covers: boot, VFS, syscalls, IPC, signals, memory, diskfs, network

New sections:
- TEST 6: SMP=1 boot regression (12 checks)
  Verifies single-CPU boot, fork, signals, pipe, diskfs, network
- TEST 7: SMP=2 boot (6 checks)
  Verifies dual-CPU boot, CoW fork, parallel fork, diskfs, network

Existing sections 2-5 unchanged (multi-disk ATA detection).

Test results: 152/152 PASS