chore(lint): bring .tsx files into the eslint, lefthook, and jscpd lanes

.tsx sources and specs were invisible to every lint surface: the eslint
flat-config globs, the lefthook staged-file glob, and the jscpd clone
scan all matched *.ts only. Widen the five eslint file groups (source,
test, client-test, sonar, formatting), the pre-commit glob, and the
jscpd format/pattern to cover .tsx.

Existing .tsx files predate these lanes; follow-up commits on this PR
clear the backlog they surface.

.jscpd.json

@@ -2,8 +2,8 @@
   "minTokens": 60,
   "minLines": 6,
   "mode": "mild",
-  "format": ["typescript"],
+  "format": ["typescript", "tsx"],
-  "pattern": "**/*.ts",
+  "pattern": "**/*.{ts,tsx}",
   "ignore": ["**/tests/**", "**/tsdown.config.ts"],
   "ignorePattern": [
     "(?s)/\\* jscpd:ignore-start \\*/.*?/\\* jscpd:ignore-end \\*/"

eslint.config.mjs

@@ -27,7 +27,13 @@ export default tseslint.config(
 
   // --- our packages: full strictness -------------------------------------
   {
-    files: ['packages/*/*/src/**/*.ts', 'apps/*/src/**/*.ts', 'examples/**/*.ts', 'scripts/**/*.ts', 'website/**/*.ts'],
+    files: [
+      'packages/*/*/src/**/*.{ts,tsx}',
+      'apps/*/src/**/*.{ts,tsx}',
+      'examples/**/*.{ts,tsx}',
+      'scripts/**/*.{ts,tsx}',
+      'website/**/*.{ts,tsx}',
+    ],
     extends: [
       ...tseslint.configs.strictTypeChecked,
     ],
@@ -80,7 +86,12 @@ export default tseslint.config(
 
   // --- tests: same rules, minus the friction that fights test ergonomics --
   {
-    files: ['packages/*/*/tests/**/*.ts', 'apps/*/tests/**/*.ts', 'examples/*/tests/**/*.ts', 'scripts/**/*.spec.ts'],
+    files: [
+      'packages/*/*/tests/**/*.{ts,tsx}',
+      'apps/*/tests/**/*.{ts,tsx}',
+      'examples/*/tests/**/*.{ts,tsx}',
+      'scripts/**/*.spec.{ts,tsx}',
+    ],
     extends: [
       ...tseslint.configs.strictTypeChecked,
     ],
@@ -117,7 +128,10 @@ export default tseslint.config(
   // Context merges collide), so the shared project service cannot resolve
   // them — parse these through the client aggregate explicitly.
   {
-    files: ['packages/client/*/tests/**/*.ts', 'scripts/client-bundle-purity.spec.ts'],
+    files: [
+      'packages/client/*/tests/**/*.{ts,tsx}',
+      'scripts/client-bundle-purity.spec.ts',
+    ],
     languageOptions: {
       parserOptions: {
         projectService: false,
@@ -129,7 +143,7 @@ export default tseslint.config(
 
   // --- file-local duplication (all owned TypeScript) ---------------------
   {
-    files: ['packages/**/*.ts', 'apps/**/*.ts', 'examples/**/*.ts', 'scripts/**/*.ts', 'website/**/*.ts'],
+    files: ['packages/**/*.{ts,tsx}', 'apps/**/*.{ts,tsx}', 'examples/**/*.{ts,tsx}', 'scripts/**/*.{ts,tsx}', 'website/**/*.{ts,tsx}'],
     plugins: { sonarjs },
     rules: {
       // Cross-file clones are covered separately by jscpd.
@@ -146,7 +160,14 @@ export default tseslint.config(
 
   // --- formatting (everything we own) -------------------------------------
   {
-    files: ['packages/**/*.ts', 'apps/**/*.ts', 'examples/**/*.ts', 'scripts/**/*.ts', 'website/**/*.ts', 'eslint.config.mjs'],
+    files: [
+      'packages/**/*.{ts,tsx}',
+      'apps/**/*.{ts,tsx}',
+      'examples/**/*.{ts,tsx}',
+      'scripts/**/*.{ts,tsx}',
+      'website/**/*.{ts,tsx}',
+      'eslint.config.mjs',
+    ],
     plugins: { '@stylistic': stylistic },
     rules: {
       '@stylistic/indent': ['error', 2],

lefthook.yml

@@ -5,7 +5,7 @@
 pre-commit:
   jobs:
     - name: lint (staged)
-      glob: '*.{ts,mts,cts,mjs}'
+      glob: '*.{ts,tsx,mts,cts,mjs}'
       exclude:
         - 'vendor/*/src/**'
       run: node_modules/.bin/eslint --fix {staged_files}