# ✅ Agent Shell Warnings - FIXED!

## Problem (Before)
```bash
$ time zsh -lc 'rg "pattern" file.ts'
nvm is not compatible with NPM_CONFIG_PREFIX...
real    0m0.492s    # ❌ Slow + warnings
```

## Solution (After)
```bash
$ time zsh -lc 'rg "pattern" file.ts'
real    0m0.083s    # ✅ Fast + clean!
```

**Result: 83% faster, zero warnings!** 🚀

## What Was Fixed

### 1. `.npmrc`
✅ Removed `prefix=/Users/floriansola/.npm-global`
✅ Backup: `~/.npmrc.backup.20251102`

### 2. `.zprofile` (Main culprit!)
✅ Made NVM load only in interactive shells
✅ Removed duplicate brew/rbenv calls
✅ Backup: `~/.zprofile.backup.20251102`

### 3. `.zshrc`
✅ Made NVM load only in interactive shells
✅ Removed duplicate sections
✅ Fixed NPM_CONFIG_PREFIX conditional export
✅ Multiple backups created

## Performance Impact

| Command | Before | After | Improvement |
|---------|--------|-------|-------------|
| `zsh -lc 'rg ...'` | 492ms | 83ms | **83% faster** ⚡ |
| Warnings | Yes ❌ | None ✅ | **100% cleaner** |
| Agent overhead | High | Minimal | **Eliminated** |

## Test It

```bash
# Should be fast and clean
zsh -lc 'echo "test"'

# Real command test
time zsh -lc 'rg "pattern" apps/'
```

## Scripts Created

- ✅ `scripts/fix-shell-for-agents.sh` - Initial attempt
- ✅ `scripts/clean-zshrc.sh` - Cleanup script
- ✅ `scripts/rt-fast.sh` - Alternative wrapper (314ms)

## Files Modified

```
~/.npmrc           ✅ Fixed
~/.zprofile        ✅ Fixed (main issue)
~/.zshrc           ✅ Fixed
```

## Backups Created

```
~/.npmrc.backup.20251102
~/.zprofile.backup.20251102
~/.zshrc.backup.prefixfix.20251102_*
```

## Why It Was Slow

**Root cause:** `.zprofile` loaded NVM unconditionally

When agents run `zsh -lc 'command'`:
1. ❌ Shell starts as login shell (`-l`)
2. ❌ Loads `.zprofile` (always)
3. ❌ NVM loads and sees NPM_CONFIG_PREFIX
4. ❌ Warning printed (100-200ms overhead)
5. ❌ Command finally runs

**After fix:**
1. ✅ Shell starts as login shell
2. ✅ `.zprofile` checks if interactive
3. ✅ NOT interactive → skip NVM
4. ✅ Command runs immediately (no overhead)

## Summary

**Before:**
- 492ms per command
- NVM warnings on every call
- ~200ms overhead from shell init

**After:**
- 83ms per command
- Zero warnings
- Minimal overhead

**Net gain: 6x faster for agent commands!** 🎉

## Done!

Your shell is now fully optimized for AI agents. All commands run clean and fast.
