Refactor package management and update test setup

- Replaced npm commands with Bun commands in package.json for consistency in package management.
- Updated README to reflect the new Bun commands for installation and testing.
- Modified test setup to utilize a new ensureGenerated function, streamlining the generation process.
- Enhanced PHP parity checks by introducing a new function to verify the availability of required dependencies.

These changes improve the development workflow and ensure a more cohesive environment for testing and building the project.

Author: godudy

README.md

@@ -55,11 +55,11 @@ the test suite on every run.
 ## Quick start
 
 ```bash
-npm install
-npm run check       # validate all brick definitions
-npm run generate    # emit all six runtimes into generated/
-npm test            # domain units + 6-runtime DOM parity (Go + PHP optional)
-npm run verify      # check + typecheck (engine and generated) + tests
+bun install
+bun run check       # validate all brick definitions
+bun run generate    # emit all six runtimes into generated/
+bun test            # domain units + 6-runtime DOM parity (Go + PHP optional)
+bun run verify      # check + typecheck (engine and generated) + tests
 ```
 
 Seven local welcome previews (generated primitives + shadcn tokens) live in
@@ -266,10 +266,10 @@ helper, and the canonical reference DOM.
    `<name>.variants.json` (and optional `<name>.data.json` showcase
    fixtures — they automatically become parity test cases).
 2. Register it in `bricks/index.ts`.
-3. `npm run check` — the validator enforces recipe integrity, prop
+3. `bun run check` — the validator enforces recipe integrity, prop
    references, passthrough rules, and slot/children symmetry before anything
    is emitted.
-4. `npm test` — parity across all four runtimes is asserted automatically;
+4. `bun test` — parity across all four runtimes is asserted automatically;
    no per-runtime test writing needed.
 
 ## Deliberate deviations from the upstream hand-written pair

bun.lock

@@ -0,0 +1,2 @@
+[test]
+preload = ["./tests/preload-bun.ts"]