- Add random32, random64 and random128 xorshift PRNG modules
- Refactor cam_noisy FSM: split state register, next-state logic, and datapath into distinct blocks
- Rename state_q/state_d to curr_state/next_state for clarity
- Add MASK_GROUPS localparam and fix type casting in noise generation
- Update .gitignore to exclude docs/superpowers
- Split cam_core into pure memory (cam_core.sv) and match engine (match_engine.sv)
- Add cam_params.svh with centralized parameter definitions (NUM_ROWS, HASH_BITS, LANES, etc.)
- Update cam_top.sv to use shared parameters and compose match_engine
- Update Makefile to include new match_engine module and correct Verilator define syntax
