docs: Add documentation for Bun v1.2.23 features (#23080)

## Summary
This PR adds concise documentation for features introduced in Bun
v1.2.23 that were missing from the docs.

## Added Documentation
- **pnpm migration**: Automatic `pnpm-lock.yaml` to `bun.lock` migration
- **Platform filtering**: `--cpu` and `--os` flags for cross-platform
dependency installation
- **Test improvements**: Chaining test qualifiers (e.g.,
`.failing.each`)
- **CLI**: `bun feedback` command
- **TLS/SSL**: `--use-system-ca` flag and `NODE_USE_SYSTEM_CA`
environment variable
- **Node.js compat**: `process.report.getReport()` Windows support
- **Bundler**: New `jsx` configuration object in `Bun.build`
- **SQL**: `sql.array` helper for PostgreSQL arrays

## Test plan
Documentation changes only - reviewed for accuracy against the v1.2.23
release notes.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Bot <claude-bot@bun.sh>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>

docs/bundler/index.md

@@ -400,6 +400,55 @@ $ bun build ./index.tsx --outdir ./out --format cjs
 
 TODO: document IIFE once we support globalNames.
 
+### `jsx`
+
+Configure JSX transform behavior. Allows fine-grained control over how JSX is compiled.
+
+**Classic runtime example** (uses `factory` and `fragment`):
+
+{% codetabs %}
+
+```ts#JavaScript
+await Bun.build({
+  entrypoints: ['./app.tsx'],
+  outdir: './out',
+  jsx: {
+    factory: 'h',
+    fragment: 'Fragment',
+    runtime: 'classic',
+  },
+})
+```
+
+```bash#CLI
+# JSX configuration is handled via bunfig.toml or tsconfig.json
+$ bun build ./app.tsx --outdir ./out
+```
+
+{% /codetabs %}
+
+**Automatic runtime example** (uses `importSource`):
+
+{% codetabs %}
+
+```ts#JavaScript
+await Bun.build({
+  entrypoints: ['./app.tsx'],
+  outdir: './out',
+  jsx: {
+    importSource: 'preact',
+    runtime: 'automatic',
+  },
+})
+```
+
+```bash#CLI
+# JSX configuration is handled via bunfig.toml or tsconfig.json
+$ bun build ./app.tsx --outdir ./out
+```
+
+{% /codetabs %}
+
 ### `splitting`
 
 Whether to enable code splitting.
@@ -1527,6 +1576,15 @@ interface BuildConfig {
    * @default "esm"
    */
   format?: "esm" | "cjs" | "iife";
+  /**
+   * JSX configuration object for controlling JSX transform behavior
+   */
+  jsx?: {
+    factory?: string;
+    fragment?: string;
+    importSource?: string;
+    runtime?: "automatic" | "classic";
+  };
   naming?:
     | string
     | {