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>

node_db/tutorial/custom-node-list.json

@@ -10,16 +10,6 @@
             "install_type": "git-clone",
             "description": "A minimal template for creating React/TypeScript frontend extensions for ComfyUI, with complete boilerplate setup including internationalization and unit testing."
         },
-        {
-            "author": "comfyui-wiki",
-            "title": "ComfyUI-i18n-demo",
-            "reference": "https://github.com/comfyui-wiki/ComfyUI-i18n-demo",
-            "files": [
-                "https://github.com/comfyui-wiki/ComfyUI-i18n-demo"
-            ],
-            "install_type": "git-clone",
-            "description": "ComfyUI custom node develop i18n support demo "
-        },
         {
             "author": "Suzie1",
             "title": "Guide To Making Custom Nodes in ComfyUI",
@@ -351,16 +341,6 @@
             ],
             "install_type": "git-clone",
             "description": "A minimal test suite demonstrating how remote COMBO inputs behave in ComfyUI, with and without force_input"
-        },
-        {
-            "author": "J1mB091",
-            "title": "ComfyUI-J1mB091 Custom Nodes",
-            "reference": "https://github.com/J1mB091/ComfyUI-J1mB091",
-            "files": [
-                "https://github.com/J1mB091/ComfyUI-J1mB091"
-            ],
-            "install_type": "git-clone",
-            "description": "Vibe Coded ComfyUI Custom Nodes"
         }
     ]
 }