fix: Docker path translation for review_changes and code deduplication

- Fixed review_changes tool to properly translate host paths to container paths in Docker
- Prevents "No such file or directory" errors when running in Docker containers
- Added proper error handling with clear messages when paths are inaccessible

refactor: Centralized token limit validation across all tools
- Added _validate_token_limit method to BaseTool to eliminate code duplication
- Reduced ~25 lines of duplicated code across 5 tools (analyze, chat, debug_issue, review_code, think_deeper)
- Maintains exact same error messages and behavior

feat: Enhanced large prompt handling
- Added support for prompts >50K chars by requesting file-based input
- Preserves MCP's ~25K token capacity for responses
- All tools now check prompt size before processing

test: Added comprehensive Docker path integration tests
- Tests for path translation, security validation, and error handling
- Tests for review_changes tool specifically with Docker paths
- Fixed failing think_deeper test (updated default from "max" to "high")

chore: Code quality improvements
- Applied black formatting across all files
- Fixed import sorting with isort
- All tests passing (96 tests)
- Standardized error handling follows MCP TextContent format

The changes ensure consistent behavior across all environments while reducing code duplication and improving maintainability.

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

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

setup-docker-env.sh

@@ -17,9 +17,8 @@ else
 # Gemini MCP Server Docker Environment Configuration
 # Generated on $(date)
 
-# The absolute path to your project root on the host machine
-# This should be the directory containing your code that you want to analyze
-WORKSPACE_ROOT=$CURRENT_DIR
+# WORKSPACE_ROOT is not needed for the wrapper script approach
+# It will be set dynamically when you run the container
 
 # Your Gemini API key (get one from https://makersuite.google.com/app/apikey)
 # IMPORTANT: Replace this with your actual API key
@@ -46,7 +45,9 @@ echo "        \"run\","
 echo "        \"--rm\","
 echo "        \"-i\","
 echo "        \"--env-file\", \"$CURRENT_DIR/.env\","
-echo "        \"-v\", \"$CURRENT_DIR:/workspace:ro\","
+echo "        \"-e\", \"WORKSPACE_ROOT=$HOME\","
+echo "        \"-e\", \"MCP_PROJECT_ROOT=/workspace\","
+echo "        \"-v\", \"$HOME:/workspace:ro\","
 echo "        \"gemini-mcp-server:latest\""
 echo "      ]"
 echo "    }"
@@ -58,5 +59,7 @@ echo "Config file location:"
 echo "  macOS: ~/Library/Application Support/Claude/claude_desktop_config.json"
 echo "  Windows: %APPDATA%\\Claude\\claude_desktop_config.json"
 echo ""
-echo "Note: The configuration above mounts the current directory ($CURRENT_DIR)"
-echo "as the workspace. You can change this path to any project directory you want to analyze."
+echo "Note: This configuration mounts your home directory ($HOME)."
+echo "Docker can ONLY access files within the mounted directory."
+echo "To mount a different directory, change the -v parameter."
+echo "Example: -v \"/path/to/project:/workspace:ro\""