proof/: all 23 Isabelle theory files now verify under Isabelle2025-2

Isabelle toolchain replaced (was genuinely 2011, 14+ years stale) and every
theory file fixed to actually compile -- most had apparently never been
checked under a working Isabelle at all. Fixed the vm_state self-reference
in StarForth_Base.thy properly (word_table is now a free-standing global
constant, not a circular record field), corrected the word_physics_transparent
axiom (was claiming full state equality from mere exec-equivalence, provably
too strong), and worked through 14 years of HOL-Library drift plus several
missing-hypothesis bugs across the physics-loop and ACL theories.

Two genuine (non-tactical) bugs found and left oops-flagged rather than
silently resolved: forth_roll's index arithmetic disagrees with both its own
test lemma and the real C ROLL implementation (three-way inconsistency), and
pm_wf isn't actually preserved by pm_record_hit/pm_record_miss. Both need a
decision, not a proof-script fix.

Full writeup in FABRIC-2.md item 5.2.

proof/StarForth_Loop6_DecayInf.thy

@@ -29,7 +29,8 @@ definition clamp_slope_suggestion :: "nat \<Rightarrow> nat" where
 
 lemma clamp_slope_wf:
   "slope_wf (clamp_slope_suggestion s)"
-  by (simp add: slope_wf_def clamp_slope_suggestion_def)
+  by (simp add: slope_wf_def clamp_slope_suggestion_def
+                DECAY_SLOPE_MIN_def DECAY_SLOPE_MAX_def Q48_SCALE_def)
 
 lemma clamp_slope_pos:
   "clamp_slope_suggestion s \<ge> DECAY_SLOPE_MIN"