fix(ag-chain-cosmos): keep SwingSet state in the validator state dir

Closes #433

packages/cosmic-swingset/.gitignore

@@ -85,7 +85,6 @@ typings/
 
 # next.js build output
 .next
-ag-cosmos-chain-state.json
 lib/git-revision.txt
 agoric/
 /binding.gyp

packages/cosmic-swingset/Makefile

@@ -27,7 +27,6 @@ all: build-cosmos install
 
 scenario0-setup:
 	rm -rf ~/.ag-chain-cosmos
-	rm -f ag-cosmos-chain-state.json
 	python3 -mvenv ve3
 	ve3/bin/pip install setup-solo/
 
@@ -49,7 +48,6 @@ scenario1-run-client:
 AGC = ./lib/ag-chain-cosmos
 scenario2-setup: build-cosmos
 	rm -rf ~/.ag-chain-cosmos
-	rm -f ag-cosmos-chain-state.json
 	$(AGC) init scenario2-chain --chain-id=$(CHAIN_ID)
 	rm -rf t1
 	mkdir t1
@@ -148,7 +146,7 @@ start-ag-solo:
 	cd t1 && ../bin/ag-solo start
 
 show-local-gci:
-	@./calc-gci.js ~/.ag-cosmos-chain/config/genesis.json
+	@./calc-gci.js ~/.ag-chain-cosmos/config/genesis.json
 
 set-local-gci-ingress:
 	set -e; \

packages/cosmic-swingset/lib/ag-chain-cosmos

@@ -8,10 +8,10 @@ const BEGIN_BLOCK = 'BEGIN_BLOCK';
 const DELIVER_INBOUND = 'DELIVER_INBOUND';
 const AG_COSMOS_INIT = 'AG_COSMOS_INIT';
 
-// TODO: use the 'basedir' pattern, or find the cosmos state directory
-// (~/.ag-chain-cosmos ?), or something anything better than scribbling
-// into the current directory.
-const stateFile = 'ag-cosmos-chain-state.json';
+// TODO: use the 'basedir' pattern or the argument of '--home'
+// For now we use the default cosmos state directory (~/.ag-chain-cosmos), which
+// is better than scribbling into the current directory.
+const stateFile = `${process.env.HOME}/.ag-chain-cosmos/data/ag-cosmos-chain-state.json`;
 
 const { launch } = require('./launch-chain');
 const path = require('path');