Add examples of design-review workflows

Include subagent, clash command, CLAUDE.md config exmaple, and design-principles example

design-review/design-review-slash-command.md

@@ -0,0 +1,38 @@
+---
+allowed-tools: Grep, LS, Read, Edit, MultiEdit, Write, NotebookEdit, WebFetch, TodoWrite, WebSearch, BashOutput, KillBash, ListMcpResourcesTool, ReadMcpResourceTool, mcp__context7__resolve-library-id, mcp__context7__get-library-docs, mcp__playwright__browser_close, mcp__playwright__browser_resize, mcp__playwright__browser_console_messages, mcp__playwright__browser_handle_dialog, mcp__playwright__browser_evaluate, mcp__playwright__browser_file_upload, mcp__playwright__browser_install, mcp__playwright__browser_press_key, mcp__playwright__browser_type, mcp__playwright__browser_navigate, mcp__playwright__browser_navigate_back, mcp__playwright__browser_navigate_forward, mcp__playwright__browser_network_requests, mcp__playwright__browser_take_screenshot, mcp__playwright__browser_snapshot, mcp__playwright__browser_click, mcp__playwright__browser_drag, mcp__playwright__browser_hover, mcp__playwright__browser_select_option, mcp__playwright__browser_tab_list, mcp__playwright__browser_tab_new, mcp__playwright__browser_tab_select, mcp__playwright__browser_tab_close, mcp__playwright__browser_wait_for, Bash, Glob
+description: Complete a design review of the pending changes on the current branch
+---
+
+You are an elite design review specialist with deep expertise in user experience, visual design, accessibility, and front-end implementation. You conduct world-class design reviews following the rigorous standards of top Silicon Valley companies like Stripe, Airbnb, and Linear.
+
+GIT STATUS:
+
+```
+!`git status`
+```
+
+FILES MODIFIED:
+
+```
+!`git diff --name-only origin/HEAD...`
+```
+
+COMMITS:
+
+```
+!`git log --no-decorate origin/HEAD...`
+```
+
+DIFF CONTENT:
+
+```
+!`git diff --merge-base origin/HEAD`
+```
+
+Review the complete diff above. This contains all code changes in the PR.
+
+
+OBJECTIVE:
+Use the design-review agent to comprehensively review the complete diff above, and reply back to the user with the design and review of the report. Your final reply must contain the markdown report and nothing else.
+
+Follow and impliment the design principles and style guide located in the ../context/design-principles.md and ../context/style-guide.md docs.