fix(claude-code-memory-plugin): improve Windows compatibility

[Castor6]

Summary

• enable shell mode for runtime bootstrap commands on Windows so npm ci runs correctly during plugin setup
• replace ${OPENVIKING_CONFIG_FILE:-} with ${OPENVIKING_CONFIG_FILE} in .mcp.json because the default-value syntax is not portable to the Windows environment expansion used by Claude Code
• document the config override and Windows path separator expectations in both English and Chinese READMEs
• bump the Claude plugin manifest version to 0.1.2

Validation

• Static check: node --check examples/claude-code-memory-plugin/scripts/runtime-common.mjs
• Static check: node -e "JSON.parse(require('fs').readFileSync('examples/claude-code-memory-plugin/.claude-plugin/plugin.json','utf8')); JSON.parse(require('fs').readFileSync('examples/claude-code-memory-plugin/.mcp.json','utf8')); console.log('json ok')"
• Manual verification: validated successfully in a real Windows environment after applying this change

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[Castor6]

@Mijamind719 大佬帮忙 check 一下这个 pr ，已经一周了谢谢啦

[Mijamind719]

@Mijamind719 大佬帮忙 check 一下这个 pr ，已经一周了谢谢啦

建议顺手把 package.json 和 MCP server 内的版本号也同步到 0.1.2，避免后续日志和排障时出现版本混淆。

[Castor6]

@Mijamind719 好的，其实我已经在我插件仓库更新到新版0.1.4了，下个pr会对这些文件做版本号的谢谢