feat: Add dev environment config (.envrc + .air.toml)

Configure Wild Central for development alongside Wild Cloud:
- Port 15055 (avoids conflict with Wild Cloud on 5055)
- NATS port 14222 (avoids conflict with production NATS)
- Data dir shared with wild-cloud-redmond-data
- Air config for live reloading

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.air.toml

@@ -0,0 +1,19 @@
+root = "."
+tmp_dir = "tmp"
+
+[build]
+  bin = "./tmp/main"
+  cmd = "go build -o ./tmp/main ."
+  delay = 1000
+  exclude_dir = ["tmp", "build", "dist", "vendor", "web"]
+  exclude_regex = ["_test.go$"]
+  include_ext = ["go", "yaml"]
+  kill_delay = "0s"
+  send_interrupt = true
+  stop_on_error = true
+
+[log]
+  time = false
+
+[misc]
+  clean_on_exit = true

.envrc

@@ -0,0 +1,5 @@
+# Wild Central dev environment
+# Shares data dir with Wild Cloud for development
+export WILD_CENTRAL_DATA_DIR=$HOME/repos/wild-cloud-dev/wild-cloud-redmond-data
+export WILD_CENTRAL_PORT=15055
+export WILD_CENTRAL_NATS_PORT=14222