Add Gemini Code Assist styleguide

.gemini/config.yaml

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+ignore_patterns:
+  - "vendor/**"
+  - "*.min.js"
+  - ".gourmand-cache/**"
+  - "*.lock"

.gemini/styleguide.md

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+# CrunchTools Claude Skill Code Review Standards
+
+## Structure
+- Skills use numbered Phases with numbered Steps
+- Each phase MUST have a clear completion gate before the next phase
+- Never auto-publish external artifacts — always require user approval
+
+## Frontmatter
+- YAML frontmatter is required: name, description, argument-hint, allowed-tools
+- `name` field MUST match the directory name exactly
+- `allowed-tools` follows least-privilege — only list tools actually used
+
+## Memory Integration
+- Content-generating skills MUST search memory for brand identity before generating
+- Decision-making skills MUST store outcomes in memory
+- Never apply generic AI writing patterns — match the human's established voice
+
+## Security
+- No hardcoded credentials or API keys
+- All sensitive operations go through MCP tools
+- Never write credentials to files or pass via command-line arguments