[zenmux] Add reasoning options

[rekram1-node]

Summary

• add explicit reasoning_options to all 89 existing reasoning models
• map ZenMux normalized effort and verified hybrid-thinking toggles
• use conservative [] for fixed or unresolved controls
• make no catalog, base-model, test, or unrelated metadata changes

Matrix

• 46 effort-only
• 11 toggle-only
• 2 toggle plus effort
• 30 fixed/unresolved

Validation

• bun validate
• git diff --check
• 89/89 covered; 0 leaks; 0 unbounded budgets

[rekram1-node]

Superseded by 15 provider/lab-scoped replacement PRs, all validated and limited to at most 15 model files:

#2536 #2537 #2538 #2539 #2540 #2541 #2542 #2543 #2544 #2545 #2546 #2547 #2548 #2549 #2550