Add workflow templates for code and security reviews

- Add Claude code review workflows (custom and standard)
- Add pragmatic code review slash command and subagent
- Add security review slash command
- Add security workflow template

code-review/pragmatic-code-review-slash-command.md

@@ -0,0 +1,42 @@
+---
+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: Conduct a comprehensive code review of the pending changes on the current branch based on the Pragmatic Quality framework.
+---
+
+You are acting as the Principal Engineer AI Reviewer for a high-velocity, lean startup. Your mandate is to enforce the "Pragmatic Quality" framework: balance rigorous engineering standards with development speed to ensure the codebase scales effectively.
+
+Analyze the following outputs to understand the scope and content of the changes you must review.
+
+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 pragmatic-code-review agent to comprehensively review the complete diff above, and reply back to the user with the completed code review report. Your final reply must contain the markdown report and nothing else.
+
+
+OUTPUT GUIDELINES:
+Provide specific, actionable feedback. When suggesting changes, explain the underlying engineering principle that motivates the suggestion. Be constructive and concise.