Julia port:
- Extended type tracking from Bool (is_q16) to Int8 tri-state (TYPE_BOOL/Q16/Q0)
- Added ADD_SAT_Q0 / SUB_SAT_Q0 primitive handling
- Added avm_q0_clamp for symmetric Q0_16 range [-32767, 32767]
R port:
- Added PRIM_ADD_Q0 / PRIM_SUB_Q0 primitives
- Added push_q0 instruction, make_q0 / is_q0 helpers
- Added avm_q0_clamp for symmetric Q0_16 range
- Fixed LOAD to preserve type tag on restore
All three ports now support the full AVM ISA type universe (Q0_16, Q16_16, Bool).
Fixes applied to Rust, Julia, and R AVM ISA ports:
1. Division rounding: use floor division (matching Lean Int.ediv)
2. Clamp range: symmetric [-2147483647, 2147483647] for Q16_16,
[-32767, 32767] for Q0_16 (preserves negation involution)
3. V6 sign-decomposition comparison for ltQ16
4. Stack depth limit: maxStackDepth = 1024 with StackOverflow error
5. Added AVM-specific constants and helpers to each port
All three ports now match the Lean reference specification.
