Add adaptive growth knobs for Gröbner under arith.nl.grobner_adaptive (#9390)

* Add adaptive growth knobs for Gröbner under arith.nl.grobner_adaptive

When enabled, the per-call growth budget (m_eqs_growth, m_expr_size_growth,
m_expr_degree_growth, m_max_simplified) is scaled by m_growth_boost:
- two consecutive productive runs bump the boost by 3/2 (cap 4x)
- a miss resets the streak and decays the boost toward 1.0x by 1/4 of excess

Default is off; the existing miss-frequency throttle (m_quota / m_delay_base)
is unchanged, so this only affects per-call power, not call frequency.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* Update src/params/smt_params_helper.pyg

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-authored-by: Arie Gurfinkel <arie.gurfinkel@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

src/params/smt_params_helper.pyg

@@ -86,6 +86,7 @@ def_module_params(module_name='smt',
                           ('arith.nl.grobner_propagate_quotients', BOOL, True, 'detect conflicts x*y + z = 0 where x doesn\'t divide z'),
                           ('arith.nl.grobner_gcd_test', BOOL, True, 'detect gcd conflicts for polynomial powers x^k - y = 0'),
                           ('arith.nl.grobner_exp_delay', BOOL, True, 'use exponential delay between grobner basis attempts'),
+                          ('arith.nl.grobner_adaptive', BOOL, False, 'scale grobner growth knobs (eqs/size/degree/max_simplified) up on productive runs and down on misses'),
                           ('arith.nl.gr_q', UINT, 10, 'grobner\'s quota'),
                           ('arith.nl.grobner_subs_fixed', UINT, 1, '0 - no subs, 1 - substitute, 2 - substitute fixed zeros only'),   
                           ('arith.nl.grobner_expand_terms', BOOL, True, 'expand terms before computing grobner basis'),