chore: Introduce CTHelpers in ts-transformers serving imported symbols.

As a part of the "pretransform" step, we replace the CTS enable
directive with a wildcard import for "commontools" module that is
used when injecting new functionality via transformations.

Remove unused imports from various patterns that are now injected
by the transformers.

Author: jsantell

packages/patterns/array-in-cell-ast-nocomponents.tsx

@@ -2,12 +2,10 @@
 import {
   Cell,
   Default,
-  derive,
   h,
   handler,
   NAME,
   recipe,
-  Stream,
   UI,
 } from "commontools";
 

packages/patterns/array-in-cell-with-remove-ast-nocomponents.tsx

@@ -2,7 +2,6 @@
 import {
   Cell,
   Default,
-  derive,
   h,
   handler,
   NAME,

packages/patterns/array-in-cell-with-remove-editable.tsx

@@ -2,12 +2,10 @@
 import {
   Cell,
   Default,
-  derive,
   h,
   handler,
   NAME,
   recipe,
-  Stream,
   UI,
 } from "commontools";
 

packages/patterns/charm-ref-in-cell.tsx

@@ -2,7 +2,6 @@
 import {
   Cell,
   cell,
-  createCell,
   Default,
   derive,
   h,

packages/patterns/chatbot-list-view.tsx

@@ -3,7 +3,6 @@ import {
   Cell,
   cell,
   Default,
-  derive,
   h,
   handler,
   ID,

packages/patterns/chatbot-note-composed.tsx

@@ -4,31 +4,18 @@ import {
   Cell,
   cell,
   Default,
-  derive,
-  fetchData,
-  getRecipeEnvironment,
   h,
   handler,
-  ID,
-  ifElse,
-  JSONSchema,
-  lift,
-  llm,
-  llmDialog,
   NAME,
   navigateTo,
   OpaqueRef,
   recipe,
-  str,
-  Stream,
-  toSchema,
-  UI,
 } from "commontools";
 
 import Chat from "./chatbot.tsx";
 import Note from "./note.tsx";
 import { type BacklinksMap } from "./backlinks-index.tsx";
-import Tools, {
+import {
   addListItem,
   calculator,
   ListItem,

packages/patterns/chatbot-outliner.tsx

@@ -2,25 +2,15 @@
 import {
   BuiltInLLMMessage,
   Cell,
-  cell,
   Default,
-  derive,
-  fetchData,
-  getRecipeEnvironment,
   h,
   handler,
-  ID,
   ifElse,
   JSONSchema,
-  lift,
-  llm,
-  llmDialog,
   NAME,
   navigateTo,
   OpaqueRef,
   recipe,
-  str,
-  Stream,
   UI,
 } from "commontools";
 

packages/patterns/chatbot.tsx

@@ -9,14 +9,9 @@ import {
   generateObject,
   h,
   handler,
-  ifElse,
-  JSONSchema,
-  lift,
-  llm,
   llmDialog,
   NAME,
   recipe,
-  str,
   Stream,
   UI,
 } from "commontools";

packages/patterns/cheeseboard.tsx

@@ -1,18 +1,5 @@
 /// <cts-enable />
-import {
-  Cell,
-  cell,
-  Default,
-  derive,
-  fetchData,
-  h,
-  handler,
-  ifElse,
-  lift,
-  NAME,
-  recipe,
-  UI,
-} from "commontools";
+import { fetchData, h, lift, NAME, recipe, UI } from "commontools";
 
 /**
  * Fetch the Cheeseboard pizza schedule via Toolshed's web-read endpoint and

packages/patterns/common-tools.tsx

@@ -1,20 +1,13 @@
 /// <cts-enable />
 import {
-  BuiltInLLMMessage,
   BuiltInLLMTool,
   Cell,
-  cell,
-  Default,
   derive,
   fetchData,
   h,
   handler,
   ifElse,
-  llmDialog,
-  NAME,
   recipe,
-  Stream,
-  UI,
 } from "commontools";
 
 ///// COMMON TOOLS (get it?) ////