update steering docs and hooks for current project state

.kiro/hooks/lint-on-save.md

@@ -1,14 +1,19 @@
 ---
-name: Lint Python on Save
-description: Run ruff linter when any Python file is saved
-version: "1.0"
+name: Lint on Save
+description: Run linter when Python or TypeScript files are saved
+version: "2.0"
 trigger:
   type: onSave
-  filePattern: "**/*.py"
+  filePattern: "**/*.{py,ts,tsx}"
 ---
 
-When any Python file is saved:
+When a file is saved:
 
-1. Run `ruff check {filePath}` on the saved file
-2. If there are fixable issues, run `ruff check --fix {filePath}` to auto-fix
-3. Report any remaining issues concisely
+1. If it's a Python file (`*.py`):
+   - Run `nix-shell -p ruff --run "ruff check {filePath}"` on the saved file
+   - If there are fixable issues, run `nix-shell -p ruff --run "ruff check --fix {filePath}"`
+   - Report any remaining issues concisely
+
+2. If it's a TypeScript/React file (`*.ts` or `*.tsx`) under `frontend/`:
+   - Run `npx tsc --noEmit` from the `frontend/` directory to check types
+   - Report any type errors concisely