update air configuration for binary name and additional file extensions

Rename the output binary to emly-api.exe and expand the watcher to include .env, .sql, and .tmpl files. Additional directories like .idea, .vscode, and .claude are now excluded from the build watch.

.air.toml

@@ -1,5 +1,5 @@
 [build]
-  cmd = "go build -o ./tmp/main.exe ."
-  bin = "./tmp/main.exe"
-  include_ext = ["go"]
-  exclude_dir = ["tmp", "vendor"]
+  entrypoint = ["./tmp/emly-api.exe"]
+  cmd = "go build -o ./tmp/emly-api.exe ."
+  include_ext = ["go", ".env", ".sql", ".tmpl"]
+  exclude_dir = ["tmp", "vendor", "build", ".git", ".claude", ".idea", ".vscode"]