Add SSE inverse residue schedule and scheduled inverse dispatch

[falseywinchnet]

Motivation

• Replace the recursive inverse residue traversal with a flat, forward-derived schedule to remove per-call overhead and expose sequential op metadata to SIMD backends.
• Enable the scheduled inverse on 128-bit SSE/NEON builds first because removing recursion is the clearest win there while wider-vector paths keep the proven recursive kernels.

Description

• Add an INV_RES_SCHEDULE table and build_inverse_residue_schedule() that reverses FWD_RES_SCHEDULE and appends a final inverse binomial to form the exact inverse stream.
• Introduce scheduled dispatchers run_inv_residue_schedule and run_inv_residue_schedule_f32 that walk INV_RES_SCHEDULE and call the inverse kernels (norm2_inv_fused, codelet_d3_tw_res_inv, binomial_inv, etc.), and add __builtin_prefetch hints for the next base.
• Wire schedule construction into plan setup (build_forward_schedules() now builds INV_RES_SCHEDULE) and gate use of the flat scheduled inverse with #if BRUUN_LEVEL == 1 so SSE/NEON use the schedule while AVX2/AVX-512 retain the existing recursive path.
• Add a text notes file src/detail/inverse_acceleration_notes.txt documenting the decisions, ISA gating, and follow-up optimization candidates.

Testing

• Ran make test which built the library and ran tests/correctness and tests/api_c, both completing successfully on the AVX2 build.
• Built and ran an SSE-only test build (make BUILD_DIR=build-sse AUTO_SIMD_FLAGS='-msse2 -mno-avx'), ran build-sse/examples/benchmark 65536 7, and observed improved SSE round-trip timings versus the previous SSE build.
• Built and ran AVX2 benchmarks (examples/benchmark 65536 7) and observed that AVX2 performance did not improve with the flat schedule on this host, so the recursive inverse path remains enabled for wide-vector backends.
• Generated assembly via make asm-check and inspected the run_inv_residue_schedule / codelet output to verify vectorized code paths and that prefetch hints are emitted.

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Codex Task