fix(libs): run the type-tests targets on the workspace TypeScript

The three `type-tests` targets invoked `npx tsc`, which does not resolve to
the workspace compiler. `@dawn-ai/core` pulls in `@typescript/old`
(npm:typescript@6.0.2), whose `tsc` bin wins the hoist at
`node_modules/.bin/tsc`, so those targets type-checked the public API with
TypeScript 6.0.2 while every other target compiles with the declared 5.9.3.
That mismatch is what produced the TS5101 `baseUrl` deprecation error, which
#1064 silenced with `ignoreDeprecations: "6.0"`.

Invoke `node ./node_modules/typescript/bin/tsc` so the targets use the
compiler the workspace declares, and drop the `ignoreDeprecations` holding
action. The `rootDir` lines stay: they solve the unrelated problem of
type-specs importing sibling libraries through path mappings.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: blove

libs/ag-ui/project.json

@@ -57,7 +57,7 @@
     "type-tests": {
       "executor": "nx:run-commands",
       "options": {
-        "command": "npx tsc --noEmit -p libs/ag-ui/tsconfig.type-tests.json"
+        "command": "node ./node_modules/typescript/bin/tsc --noEmit -p libs/ag-ui/tsconfig.type-tests.json"
       }
     },
     "prepare-install": {

libs/ag-ui/tsconfig.type-tests.json

@@ -2,9 +2,6 @@
   "extends": "./tsconfig.lib.json",
   "compilerOptions": {
     "noEmit": true,
-    // This target runs the workspace `tsc` (newer than the build compilers),
-    // which errors on the inherited baseUrl unless deprecations are ignored.
-    "ignoreDeprecations": "6.0",
     // Type-specs import sibling libraries through tsconfig paths; with noEmit
     // the rootDir only has to be wide enough to contain them.
     "rootDir": "../..",

libs/chat/project.json

@@ -57,7 +57,7 @@
     "type-tests": {
       "executor": "nx:run-commands",
       "options": {
-        "command": "npx tsc --project libs/chat/tsconfig.type-tests.json --noEmit"
+        "command": "node ./node_modules/typescript/bin/tsc --project libs/chat/tsconfig.type-tests.json --noEmit"
       }
     },
     "prepare-install": {

libs/chat/tsconfig.type-tests.json

@@ -3,9 +3,6 @@
   "compilerOptions": {
     "outDir": "../../dist/out-tsc/type-tests",
     "noEmit": true,
-    // This target runs the workspace `tsc` (newer than the build compilers),
-    // which errors on the inherited baseUrl unless deprecations are ignored.
-    "ignoreDeprecations": "6.0",
     // Type-specs import sibling libraries through tsconfig paths; with noEmit
     // the rootDir only has to be wide enough to contain them.
     "rootDir": "../..",

libs/langgraph/project.json

@@ -57,7 +57,7 @@
     "type-tests": {
       "executor": "nx:run-commands",
       "options": {
-        "command": "npx tsc --noEmit -p libs/langgraph/tsconfig.type-tests.json"
+        "command": "node ./node_modules/typescript/bin/tsc --noEmit -p libs/langgraph/tsconfig.type-tests.json"
       }
     },
     "prepare-install": {

libs/langgraph/tsconfig.type-tests.json

@@ -2,9 +2,6 @@
   "extends": "./tsconfig.lib.json",
   "compilerOptions": {
     "noEmit": true,
-    // This target runs the workspace `tsc` (newer than the build compilers),
-    // which errors on the inherited baseUrl unless deprecations are ignored.
-    "ignoreDeprecations": "6.0",
     // Type-specs import sibling libraries through tsconfig paths; with noEmit
     // the rootDir only has to be wide enough to contain them.
     "rootDir": "../..",