feat: Add intelligent gemini-wrapper with smart defaults and update agent documentation

ENHANCEMENTS:
- Create gemini-wrapper script with automatic token counting and smart flag management
- Auto-add --approval-mode based on task type (analysis=default, execution=yolo)
- Raise token threshold to 2M for better large project handling
- Add comprehensive parameter documentation for --approval-mode and --include-directories

WRAPPER FEATURES:
- Token-based --all-files management (small projects get --all-files automatically)
- Smart task detection for approval modes
- Error logging to ~/.claude/.logs/gemini-errors.log
- Complete parameter passthrough for full gemini compatibility

DOCUMENTATION UPDATES:
- Update gemini-unified.md with wrapper usage guidelines and examples
- Add intelligent wrapper as recommended approach
- Document all agent files to use gemini-wrapper instead of direct gemini calls
- Include new parameter reference and best practices

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.claude/agents/code-review-test-agent.md

@@ -78,7 +78,7 @@ Use the targeted review context template:
 
 **Gemini CLI Command**:
 ```bash
-gemini -p "$(.claude/scripts/read-task-paths.sh [task-json-file]) @{CLAUDE.md} [review-analysis-prompt]"
+gemini-wrapper -p "$(.claude/scripts/read-task-paths.sh [task-json-file]) @{CLAUDE.md} [review-analysis-prompt]"
 ```
 
 This executes a change-specific Gemini CLI command that identifies: