Migrated from spboyer/waza#438

Summary

waza check currently has a binary token budget result: pass or fail. There's no warning state for skills approaching the limit.

Desired Behavior

Three-state token budget display in waza check:

Config

warning_threshold already exists in .waza.yaml and is used by waza tokens profile, but waza check ignores it. Wire it into the TokenBudgetChecker and summary table.

Changes Needed

1. internal/checks/token_budget.go - Add Warning bool field to result
2. cmd/waza/cmd_check.go - Three-state logic in display and summary table
3. CI exit code: warning = 0 (pass), error = 1 (fail)