[codex] add MCP tools visibility management (#1170)

* feat(mcp): add tools visibility management

## Features
- Tools visibility modal with 3 modes: All, Include, Exclude
- 'Manage Tools' button on McpServerCard (enabled only when connected)
- 'Fetch Tools List' button to refresh available tools (raw mode)
- Responsive design for mobile (480px), tablet (768px), desktop (1280px)
- i18n translations for 9 languages (zh/en/zh-TW/ja/ko/de/es/fr/pt)

## Technical Details
- Add raw parameter to fetchMcpTools API for unfiltered tools
- Pass raw parameter through controller → bridgeMcpAction → client
- Backend _mcp_tools_list supports raw_mode to skip include/exclude filter
- 28 MCP unit tests pass (23 controller + 5 bridge action)

## Files Changed
- McpManagerView.vue: Tools visibility modal with mode selector
- McpServerCard.vue: Add manage tools button
- mcp.ts (client): Add raw parameter to fetchMcpTools
- mcp.ts (controller): Pass raw parameter to bridge
- mcp.ts (services): Pass raw parameter to client.mcpTools
- client.ts: Add raw parameter to mcpTools
- hermes_bridge.py: Support raw_mode in _mcp_tools_list
- 9 locale files: Add 14 translation keys each
- mcp-controller.test.ts: Add 3 new test cases
- bridge-mcp-action.test.ts: New test file for parameter passing

* Delete projects directory

chore: remove accidentally committed projects/ directory

* fix MCP tools visibility edge cases

* remove MCP docs screenshots

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Co-authored-by: Crafter-feng <succeed_happu@163.com>
Co-authored-by: Crafter-feng <37255449+Crafter-feng@users.noreply.github.com>

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