refactor: remove package-level caching to support dynamic installation

Remove package-level caching in cnr_utils and node_package modules to enable
proper dynamic custom node installation and version switching without ComfyUI
server restarts.

Key Changes:
- Remove @lru_cache decorators from version-sensitive functions
- Remove cached_property from NodePackage for dynamic state updates
- Add comprehensive test suite with parallel execution support
- Implement version switching tests (CNR ↔ Nightly)
- Add case sensitivity integration tests
- Improve error handling and logging

API Priority Rules (manager_core.py:1801):
- Enabled-Priority: Show only enabled version when both exist
- CNR-Priority: Show only CNR when both CNR and Nightly are disabled
- Prevents duplicate package entries in /v2/customnode/installed API
- Cross-match using cnr_id and aux_id for CNR ↔ Nightly detection

Test Infrastructure:
- 8 test files with 59 comprehensive test cases
- Parallel test execution across 5 isolated environments
- Automated test scripts with environment setup
- Configurable timeout (60 minutes default)
- Support for both master and dr-support-pip-cm branches

Bug Fixes:
- Fix COMFYUI_CUSTOM_NODES_PATH environment variable export
- Resolve test fixture regression with module-level variables
- Fix import timing issues in test configuration
- Register pytest integration marker to eliminate warnings
- Fix POSIX compliance in shell scripts (((var++)) → $((var + 1)))

Documentation:
- CNR_VERSION_MANAGEMENT_DESIGN.md v1.0 → v1.1 with API priority rules
- Add test guides and execution documentation (TESTING_PROMPT.md)
- Add security-enhanced installation guide
- Create CLI migration guides and references
- Document package version management

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

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

tests/update_test_durations.sh

@@ -0,0 +1,101 @@
+#!/bin/bash
+# Update test durations for optimal parallel distribution
+# Run this when tests are added/modified/removed
+
+set -e
+
+# Colors
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+echo -e "${BLUE}========================================${NC}"
+echo -e "${BLUE}Test Duration Update${NC}"
+echo -e "${BLUE}========================================${NC}"
+echo ""
+
+# Check if virtual environment is activated
+if [ -z "$VIRTUAL_ENV" ]; then
+    echo -e "${YELLOW}Activating virtual environment...${NC}"
+    source ~/venv/bin/activate
+fi
+
+# Project root
+cd /mnt/teratera/git/comfyui-manager
+
+# Clean up
+echo -e "${YELLOW}Cleaning up processes and cache...${NC}"
+pkill -f "ComfyUI/main.py" 2>/dev/null || true
+sleep 2
+
+find comfyui_manager -type d -name "__pycache__" -exec rm -rf {} + 2>/dev/null || true
+find tests -type d -name "__pycache__" -exec rm -rf {} + 2>/dev/null || true
+
+# Reinstall package
+echo -e "${YELLOW}Reinstalling package...${NC}"
+if command -v uv &> /dev/null; then
+    uv pip install . > /dev/null
+else
+    pip install . > /dev/null
+fi
+
+# Start test server
+echo -e "${YELLOW}Starting test server...${NC}"
+cd tests/env/ComfyUI_1
+
+nohup python main.py \
+    --enable-manager \
+    --enable-compress-response-body \
+    --front-end-root front \
+    --port 8188 \
+    > /tmp/duration-update-server.log 2>&1 &
+
+SERVER_PID=$!
+cd - > /dev/null
+
+# Wait for server
+echo -e "${YELLOW}Waiting for server to be ready...${NC}"
+for i in {1..30}; do
+    if curl -s "http://127.0.0.1:8188/system_stats" > /dev/null 2>&1; then
+        echo -e "${GREEN}✓ Server ready${NC}"
+        break
+    fi
+    sleep 2
+    echo -ne "."
+done
+echo ""
+
+# Run tests to collect durations
+echo -e "${YELLOW}Running tests to collect duration data...${NC}"
+echo -e "${YELLOW}This may take 15-20 minutes...${NC}"
+
+pytest tests/glob/ tests/test_case_sensitivity_integration.py \
+    --store-durations \
+    --durations-path=tests/.test_durations \
+    -v \
+    --tb=short \
+    > /tmp/duration-update.log 2>&1
+
+EXIT_CODE=$?
+
+# Stop server
+pkill -f "ComfyUI/main.py" 2>/dev/null || true
+sleep 2
+
+if [ $EXIT_CODE -eq 0 ]; then
+    echo -e "${GREEN}========================================${NC}"
+    echo -e "${GREEN}✓ Duration data updated successfully${NC}"
+    echo -e "${GREEN}========================================${NC}"
+    echo ""
+    echo -e "Updated file: ${BLUE}tests/.test_durations${NC}"
+    echo -e "Test count: $(jq 'length' tests/.test_durations 2>/dev/null || echo 'N/A')"
+    echo ""
+    echo -e "${YELLOW}Commit the updated .test_durations file:${NC}"
+    echo -e "  git add tests/.test_durations"
+    echo -e "  git commit -m 'chore: update test duration data'"
+else
+    echo -e "${RED}✗ Failed to update duration data${NC}"
+    echo -e "${YELLOW}Check log: /tmp/duration-update.log${NC}"
+    exit 1
+fi