require --compile for ESM bytecode (#26624)

## Summary
- Add validation to require `--compile` when using ESM bytecode
- Update documentation to clarify ESM bytecode requirements

## Why
ESM module resolution is two-phase: (1) analyze imports/exports, (2)
evaluate. Without `--compile`, there's no `module_info` embedded, so JSC
must still parse the file for module analysis even with bytecode -
causing a double-parse deopt.

## Changes
- **CLI**: Error when `--bytecode --format=esm` is used without
`--compile`
- **JS API**: Error when `bytecode: true, format: 'esm'` is used without
`compile: true`
- **Docs**: Update bytecode.mdx, executables.mdx, index.mdx to clarify
requirements
- **Types**: Update JSDoc for bytecode option in bun.d.ts

## Test plan
```bash
# Should error
bun build ./test.js --bytecode --format=esm --outdir=./out
# error: ESM bytecode requires --compile. Use --format=cjs for bytecode without --compile.

# Should work
bun build ./test.js --bytecode --format=esm --compile --outfile=./mytest
bun build ./test.js --bytecode --format=cjs --outdir=./out
```

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

---------

Co-authored-by: Claude Bot <claude-bot@bun.sh>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

packages/bun-types/bun.d.ts

@@ -2594,7 +2594,10 @@ declare module "bun" {
      * start times, but will make the final output larger and slightly increase
      * memory usage.
      *
-     * Bytecode is currently only supported for CommonJS (`format: "cjs"`).
+     * - CommonJS: works with or without `compile: true`
+     * - ESM: requires `compile: true`
+     *
+     * Without an explicit `format`, defaults to CommonJS.
      *
      * Must be `target: "bun"`
      * @default false