Handle parameters with environmental variables only (#24)

* Switch to Typer to read the CLI parameters and options

* Rely on environmental variables only

* Fix tests

* Update README

uv.lock

@@ -498,7 +498,6 @@ dependencies = [
     { name = "fastembed" },
     { name = "mcp", extra = ["cli"] },
     { name = "qdrant-client" },
-    { name = "typer" },
 ]
 
 [package.dev-dependencies]
@@ -515,7 +514,6 @@ requires-dist = [
     { name = "fastembed", specifier = ">=0.6.0" },
     { name = "mcp", extras = ["cli"], specifier = ">=1.3.0" },
     { name = "qdrant-client", specifier = ">=1.12.0" },
-    { name = "typer", specifier = ">=0.15.2" },
 ]
 
 [package.metadata.requires-dev]