bl00mbox: docs update

docs/badge/bl00mbox.rst

@@ -190,8 +190,15 @@ and we can get them individually:
       [channel mixer] (1 connections)
         output in [bud 1] lowpass
 
-As we can see this channel has quite a lot going on. Ideally each application should have
-its own channel(s), so in order to get a free one we'll create a new one without argument:
+As we can see this channel has quite a lot going on. Each application should have its own
+channel(s), so in order to get a free one we'll request a free one from the backend by
+skipping the argument:
+
+.. note::
+    Do not use .Channel(n) in application code, it's for REPL purposes only. Each
+    application manages their own channel(s), so they might clear out your plugins
+    or drag down your performance or other kinds of nasty interferences. Don't do it.
+    
 
 .. code-block:: pycon
 

python_payload/apps/demo_melodic/__init__.py

@@ -74,7 +74,7 @@ def run(ins: InputState) -> None:
 def init() -> None:
     global synths
     for i in range(1):
-        synths += [blm.new_patch(bl00mbox.patches.tinysynth_fm)]
+        synths += [blm.new(bl00mbox.patches.tinysynth_fm)]
     for synth in synths:
         synth.decay(100)
 

python_payload/mypystubs/bl00mbox/_user.pyi

@@ -49,8 +49,8 @@ class Channel:
     free: bool
 
     def clear(self) -> None: ...
-    def new_patch(self, patch: Type[T], init_var: Optional[Any] = None) -> T: ...
-    def new_bud(
+    def _new_patch(self, patch: Type[T], init_var: Optional[Any] = None) -> T: ...
+    def _new_bud(
         self,
         thing: bl00mbox._plugins._Plugin | int,
         init_var: Optional[int | float] = None,