chore: add .air.toml and fix docker-compose paths for backend

backend/.air.toml

@@ -0,0 +1,44 @@
+root = "."
+testdata_dir = "testdata"
+tmp_dir = "tmp"
+
+[build]
+  args_bin = []
+  bin = "./tmp/main"
+  cmd = "go build -o ./tmp/main ./cmd/api"
+  delay = 1000
+  exclude_dir = ["assets", "tmp", "vendor", "testdata"]
+  exclude_file = []
+  exclude_regex = ["_test.go"]
+  exclude_unchanged = false
+  follow_symlink = false
+  full_bin = ""
+  include_dir = ["cmd", "internal", "pkg"]
+  include_ext = ["go", "tpl", "tmpl", "html"]
+  include_regex = []
+  kill_delay = "0s"
+  log = "build-errors.log"
+  poll = false
+  poll_interval = 0
+  rerun = false
+  rerun_delay = 500
+  send_interrupt = false
+  stop_on_error = true
+
+[color]
+  app = ""
+  build = "yellow"
+  main = "magenta"
+  runner = "green"
+  watcher = "cyan"
+
+[log]
+  main_only = false
+  time = false
+
+[misc]
+  clean_on_exit = false
+
+[screen]
+  clear_on_rebuild = false
+  keep_scroll = true

docker-compose.dev.yml

@@ -21,7 +21,7 @@ services:
   backend:
     image: cosmtrek/air
     container_name: sim-backend-dev
-    working_dir: /app/backend
+    working_dir: /app
     ports:
       - "8522:8522"
     environment:
@@ -29,6 +29,7 @@ services:
       - PORT=8522
     volumes:
       - .:/app
+    command: air -c backend/.air.toml
     depends_on:
       db:
         condition: service_healthy