Fixed two critical data loss bugs where user-added custom endpoints were discarded:
1. **AddProviderDialog**: Form submission ignored values.meta from ProviderForm and
re-inferred URLs only from presets/config, causing loss of endpoints added via
speed test modal. Now prioritizes form-collected meta and uses fallback inference
only when custom_endpoints is missing.
2. **ProviderForm**: Edit mode always returned initialData.meta, discarding any
changes made in the speed test modal. Now uses mergeProviderMeta to properly
merge customEndpointsMap with existing meta fields.
Changes:
- Extract mergeProviderMeta utility to handle meta field merging logic
- Preserve other meta fields (e.g., usage_script) during endpoint updates
- Unify new/edit code paths to use consistent meta handling
- Add comprehensive unit tests for meta merging scenarios
- Add integration tests for AddProviderDialog submission flow
Impact:
- Third-party and custom providers can now reliably manage multiple endpoints
- Edit operations correctly reflect user modifications
- No data loss for existing meta fields like usage_script
## MSW Infrastructure Enhancement
- Add 5 MCP API handlers to tests/msw/handlers.ts:
- get_mcp_config: Fetch MCP configuration for app type
- import_mcp_from_claude/codex: Mock import operations (returns count: 1)
- set_mcp_enabled: Toggle MCP server enabled state
- upsert_mcp_server_in_config: Create/update MCP server
- delete_mcp_server_in_config: Remove MCP server
- Add MCP state management to tests/msw/state.ts:
- McpConfigState type with per-app server storage
- Default test data (stdio server for Claude, http server for Codex)
- CRUD functions: getMcpConfig, setMcpServerEnabled, upsertMcpServer, deleteMcpServer
- Immutable state operations with deep cloning
## McpFormModal Component Tests (4 tests)
- Test preset application: Verify ID and config JSON auto-fill from preset selection
- Test conflict detection: Async validation shows warning when syncing to conflicting ID
- Test field sanitization: Verify trim whitespace, split tags, clean URLs before save
- Test validation errors: Block submit and show toast error for invalid stdio config (missing command)
## McpPanel Integration Tests (3 tests)
- Test toggle enabled state: Click toggle button triggers useMcpActions.toggleEnabled with correct params
- Test create server flow: Open form → submit → saveServer called with syncOtherSide option
- Test delete server flow: Click delete → confirm dialog → deleteServer called with ID
## Test Utilities
- Add createTestQueryClient helper with retry: false for faster test execution
## Test Coverage
- Test files: 15 → 17 (+2)
- Total tests: 105 → 112 (+6.7%)
- All 112 tests passing
- Execution time: 3.15s
