Refactor/ast transformers part 1 (#1813)

New modular transformer stack.

* Stand up @commontools/ts-transformers: normalized data-flow analysis, rule-based opaque-ref rewrite, schema-injection rule, import helpers, and comprehensive fixture coverage
* Share transformer utilities across the workspace (common-tools-imports, common-tools-symbols, call-kind detection, binding plans) with robust helper reuse and canonical derive substitution
* Wire the new package into @commontools/js-runtime: use the modular transformers, tighten virtual FS/module resolution, streamline environment lib handling, and keep compiler tests up to date with explicit CommonTools typings
* Document roadmap and open gaps (transformers_notes.md), expand fixtures/tests to guard edge cases, and align schema generation via schema-generator’s createSchemaTransformerV2

Author: mathpirate

deno.json

@@ -12,6 +12,8 @@
     "./packages/integration",
     "./packages/js-runtime",
     "./packages/js-sandbox",
+    "./packages/ts-transformers",
+    "./packages/test-support",
     "./packages/schema-generator",
     "./packages/llm",
     "./packages/memory",
@@ -86,7 +88,7 @@
       "docs/",
       "packages/seeder/templates/",
       "packages/static/assets/",
-      "packages/js-runtime/test/fixtures",
+      "packages/ts-transformers/test/fixtures",
       "packages/schema-generator/test/fixtures",
       "packages/vendor-astral"
     ]

deno.lock

@@ -1,7 +1,7 @@
 {
   "name": "@commontools/js-runtime",
   "tasks": {
-    "test": "deno test --allow-read --allow-write --allow-run --allow-env=API_URL,\"TSC_*\",NODE_INSPECTOR_IPC,VSCODE_INSPECTOR_OPTIONS,NODE_ENV test/*.test.ts"
+    "test": "deno test --allow-read --allow-write --allow-run --allow-env=UPDATE_GOLDENS,API_URL,\"TSC_*\",NODE_INSPECTOR_IPC,VSCODE_INSPECTOR_OPTIONS,NODE_ENV test/*.test.ts"
   },
   "imports": {
     "typescript": "npm:typescript",