Add the SQLite store for leases and accounting

Implemented-By: OpenCode session (model recorded in docs/implementer-log.md)

go.mod

@@ -2,4 +2,19 @@ module git.wntrmute.dev/kyle/crossbar
 
 go 1.26
 
-require github.com/BurntSushi/toml v1.6.0
+require (
+	github.com/BurntSushi/toml v1.6.0
+	modernc.org/sqlite v1.59.0
+)
+
+require (
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.24 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/sys v0.47.0 // indirect
+	modernc.org/libc v1.75.7 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.12.1 // indirect
+)