# ifc-validate where_rule plan
Status: planned under `VAL-WHERE`. Last updated: 2026-08-19.
Follow `AGENTS.md`; claim one task and record blockers/decisions beneath it.
## Work queue
- [ ] `WHERE-REG` - stable support-state registry
- Proof: unit/property/adversarial tests plus crate clippy.
- [ ] `WHERE-ENGINE` - bounded rule invocation
- Proof: unit/property/adversarial tests plus crate clippy.
- [ ] `WHERE-BUILTIN` - implement high-value generic rules
- Proof: unit/property/adversarial tests plus crate clippy.
- [ ] `WHERE-REPORT` - unsupported and evaluation-error findings
- Proof: unit/property/adversarial tests plus crate clippy.
## Completion log
Append `TASK-ID - proof - material decision`; no long logs.