rename rules -> op_rules

Really, *all* of our files contain proof rules

_CoqProject

@@ -96,7 +96,7 @@ program_logic/ownp.v
 heap_lang/lang.v
 heap_lang/tactics.v
 heap_lang/wp_tactics.v
-heap_lang/rules.v
+heap_lang/op_rules.v
 heap_lang/notation.v
 heap_lang/lib/spawn.v
 heap_lang/lib/par.v

heap_lang/adequacy.v

 From iris.program_logic Require Export weakestpre adequacy gen_heap.
-From iris.heap_lang Require Export rules.
+From iris.heap_lang Require Export op_rules.
 From iris.algebra Require Import auth.
 From iris.heap_lang Require Import proofmode notation.
 From iris.proofmode Require Import tactics.

heap_lang/lib/lock.v

-From iris.heap_lang Require Export rules notation.
+From iris.heap_lang Require Export op_rules notation.
 From iris.base_logic.lib Require Export invariants.
 
 Structure lock Σ `{!heapG Σ} := Lock {

heap_lang/rules.v → heap_lang/op_rules.v

@@ -6,6 +6,8 @@ From iris.proofmode Require Import tactics.
 From iris.prelude Require Import fin_maps.
 Import uPred.
 
+(** Basic rules for language operations. *)
+
 Class heapG Σ := HeapG {
   heapG_invG : invG Σ;
   heapG_gen_heapG :> gen_heapG loc val Σ

heap_lang/proofmode.v

 From iris.program_logic Require Export weakestpre.
 From iris.proofmode Require Import coq_tactics.
 From iris.proofmode Require Export tactics.
-From iris.heap_lang Require Export wp_tactics rules.
+From iris.heap_lang Require Export wp_tactics op_rules.
 Import uPred.
 
 Ltac wp_strip_later ::= iNext.

heap_lang/wp_tactics.v

-From iris.heap_lang Require Export tactics rules.
+From iris.heap_lang Require Export tactics op_rules.
 Import uPred.
 
 (** wp-specific helper tactics *)