feat(edriziai): initialize Edriziai startup mentor AI assistant

- Configure Slack integration with custom commands (/startup, /mentor, /ourfeedback, /analyze, /resources)
- Set up environment configuration for AI services (OpenAI, Anthropic, Google)
- Add startup mentorship knowledge base (fundamentals, mental health, financial modeling)
- Configure character settings in edrizi.json
- Update gitignore to protect sensitive configs and credentials
- Set up proper server ports (3000 main, 3001 Slack)

.gitignore

@@ -68,3 +68,16 @@ eliza.sig
 packages/plugin-nvidia-nim/extra
 packages/plugin-nvidia-nim/old_code
 packages/plugin-nvidia-nim/docs
+# Edriziai specific ignores
+characters/edriziai-info/secrets.json
+*.env
+.env.*
+
+# Build directories
+**/.turbo/
+**/dist/
+**/node_modules/
+
+# Cache and temporary files
+**/*.cache
+**/*.temp