waddling-errors-macros 0.7.3

# 🦆 no_std WASM Test

Proof that `waddling-errors-macros` generates code that runs in pure no_std WASM.

## Quick Test

```bash
# 1. Build WASM (already built - see no_std_wasm.wasm)
cargo build --example no_std_wasm \
  --target wasm32-unknown-unknown \
  --no-default-features \
  --release

# 2. Run in browser
python -m http.server 8000
# Open: http://localhost:8000
```

Or use the build scripts:
```bash
./build.sh      # Linux/Mac
build.bat       # Windows
```

## What This Proves

✅ Macros run at **build time** with std (on dev machine)  
✅ Generated code runs at **runtime** without std (in WASM)  
✅ All macros work: `component!`, `primary!`, `sequence!`, `diag!`  
✅ Binary size: **56 KB** (tiny!)  
✅ Zero std dependency at runtime

## Files

- `index.html` - Browser test page (interactive)
- `no_std_wasm.wasm` - Compiled WASM binary
- `build.sh` / `build.bat` - Build scripts
- `../no_std_wasm.rs` - Source code

## Prerequisites

```bash
# Install WASM target (one-time)
rustup target add wasm32-unknown-unknown

# Python for HTTP server (browser test)
python --version
```

## Troubleshooting

**"Failed to fetch WASM"**  
→ Run `build.sh` or `build.bat` first

**Build fails**  
→ `rustup target add wasm32-unknown-unknown`

**Browser shows blank**  
→ Check console (F12), try Chrome/Firefox

## Why This Matters

Same pattern as production crates:
- **serde** - Derives use std at build, output is no_std
- **embedded-hal** - Macros use std, traits are no_std

**This is not a claim - it's verified, working WASM.** 🚀

---

**56 KB | Zero std | Real WASM**