feat(ui-models)!: single-key hand-written provider editors with derived credential references

The Models page drops the generic schema renderer and the visible
environment-variable field: each editor is a curated per-family card whose
primary input is one write-only API key stored under a derived
<ROUTE>_API_KEY reference (recorded as apiKeyEnv in the pi-ai profile), an
unkeyed whole-section provider opens as its setup card, and the collapsed
customized-settings fold carries baseURL/reasoningEffort (deepseek) or
reasoning (pi-ai). dsh-client-schema-form reduces to the schema/draft model
layer (no React).

packages/client/schema-form/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@deepseek-ai/dsh-client-schema-form",
-  "description": "Schema-driven React form renderer: rehydrates a serialized schemastery schema and renders/edits a settings draft against it",
+  "description": "Schema/draft model layer for settings editors: rehydrates a serialized schemastery schema, validates drafts, and edits them immutably by path",
   "version": "0.0.1",
   "private": true,
   "type": "module",
@@ -20,7 +20,6 @@
   },
   "license": "BSD-3-Clause",
   "dependencies": {
-    "react": "^18.2.0",
     "schemastery": "^3.18.0"
   },
   "peerDependencies": {
@@ -29,7 +28,6 @@
   },
   "devDependencies": {
     "@deepseek-ai/dsh-invariants": "workspace:^",
-    "@types/react": "~18.3.1",
     "cordis": "^4.0.0-rc.7"
   },
   "files": [