feat: add config presets module for quick agent mode switching (#36)

[zsxh1990]

What

Add a presets module that allows saving and loading configuration presets for quick switching between different agent modes.

Why

From #36: Users want to quickly switch between different settings presets (e.g., Coder, Researcher, Writer) without manually editing config.yaml each time.

How

New file: modules/presets.py

class Presets(core.module.Module):
    """Manage configuration presets for quick switching."""
    
    async def save(self, name: str, description: str = "") -> str:
        """Save current config as preset."""
    
    async def load(self, name: str) -> str:
        """Load a configuration preset."""
    
    async def list(self) -> str:
        """List all saved presets."""
    
    async def delete(self, name: str) -> str:
        """Delete a preset."""

Features

• Save/Load presets: /preset save coder / /preset load coder
• List presets: /preset list
• Delete presets: /preset delete coder
• Sensitive data redaction: API keys are redacted when saving
• Non-destructive merge: Loading a preset only overrides specified values

Storage

Presets are stored as YAML files in ~/.openlumara/presets/:

~/.openlumara/presets/
├── coder.yaml
├── researcher.yaml
└── writer.yaml

Usage

/preset save coder Coder mode with limited modules
/preset load coder
/preset list
/preset delete coder

Closes #36

Signed-off-by: zsxh1990 zsxh1990@users.noreply.github.com

[zsxh1990]

Hi — friendly check-in on the config presets module PR. It has been about 10 days since the last update. Happy to rebase or adjust. Thanks!

[Rose22]

this is so AI generated that it redacts sensitive info in the step where it saves the preset to disk, and then later on when merging the preset into the in-memory config. so basically you're destroying any saved usernames, passwords, keys, and tokens. that will cause total breakage, broken API connections, etcetera.

the idea is nice, but this implementation won't do at all! also, you're breaking the AI usage policy. also, i have no reason to believe you're not an AI, considering your use of em dashes