research: add ordered finite collision response cocycle

[mountain]

Summary

• replace the adjacent affine Phase 1I order control with two overlapping reversible XOR collision cells on three sites
• separate the renewed target action, forgotten set-valued response relation, retained-law response section, and state-dependent response transport
• pass the Phase 12C-inspired C0--C2 gates on exact rational corpora while holding C3/C4, continuum H response, generic calculus, and arithmetic-rank claims out
• expose the collision-derived parity product character z_j' = z_i z_j and record its decoder/domain tradeoff without importing a logarithmic covector
• add the Phase 1J-A contract/result records and update the Sonnet/status ledgers

Exact findings

• the two local involutions are noncommutative at both microscopic and renewed target levels
• 72/72 retained-law response reconstructions pass
• the denominator-eight half-occupancy fibre contains 57 microscopic laws and yields the exact five-valued response relation {−1/2, −1/4, 0, 1/4, 1/2} on the affected component
• 900/900 prefix/suffix cases satisfy the nonlinear transported response cocycle
• a frozen positive law gives an exact counterexample to naive response addition; state-dependent transport repairs it

Verification

• python -m pytest -q tests/research/test_selective_continuation_time_reversal.py tests/research/test_charted_fibre_lyapunov_calculus.py tests/research/test_collision_response_cocycle.py --durations=10 — 25 passed
• python -m pytest -q --durations=25 — 692 passed, 25 skipped, 1 pre-existing deprecation warning
• all three public quickstarts passed
• python -m build and python -m twine check dist/* passed
• git diff --check passed

Boundary

This completes Phase 1J-A through C2 only. It does not select a closed covector, prove an H functional, control a continuum collision response, establish future adequacy/effective compression, objectify correlation fibres, or promote a generic API/rank. Phase 1J-B remains the next gate.

Advances #127 (Phase 1J-A only; does not close the issue).