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/conceptual-planning-agent.md

@@ -53,7 +53,7 @@ def handle_analysis_markers(prompt):
     if "[GEMINI_CLI_REQUIRED]" in prompt:
         for dimension in dimensions:
             result = execute_gemini_cli(
-                command=f"gemini -p \"$(.claude/scripts/read-task-paths.sh [task-json-file]) @{{CLAUDE.md}} {dimension}\"",
+                command=f"gemini-wrapper -p \"$(.claude/scripts/read-task-paths.sh [task-json-file]) @{{CLAUDE.md}} {dimension}\"",
                 dimension=dimension,
                 role_context=role,
                 topic=topic