refactor(config): migrate .claude/CLAUDE.md to .agents/AGENTS.md with compatibility symlinks; add skill

.claude

@@ -0,0 +1 @@
+.agents

.claude/settings.json

@@ -1,48 +0,0 @@
-{
-  "enabledPlugins": {
-    "superpowers@claude-plugins-official": true
-  },
-  "enableAllProjectMcpServers": true,
-  "permissions": {
-    "allow": [
-      "Bash(python *)",
-      "Bash(python3 *)",
-      "Bash(uv *)",
-      "Bash(pip *)",
-      "Bash(pytest *)",
-      "Bash(ruff *)",
-      "Bash(black *)",
-      "Bash(git status *)",
-      "Bash(git add *)",
-      "Bash(git diff *)",
-      "Bash(git log *)",
-      "Bash(git commit *)",
-      "Bash(git push:*)",
-      "Bash(git pull *)",
-      "Bash(git fetch *)",
-      "Bash(git checkout *)",
-      "Bash(git branch *)",
-      "Bash(ls *)",
-      "Bash(mkdir *)",
-      "Bash(cp *)",
-      "Bash(mv *)",
-      "Bash(rm *)",
-      "Bash(find *)",
-      "Bash(grep *)",
-      "Bash(make *)",
-      "Bash(npx *)",
-      "Bash(node *)",
-      "Bash(npm *)",
-      "Bash(echo *)",
-      "Bash(gh *)",
-      "Bash(env)",
-      "WebSearch",
-      "Read(workspace/**/*)",
-      "Write(workspace/**/*)",
-      "Edit(workspace/**/*)",
-      "Read(.claude/**/*)",
-      "Write(.claude/**/*)",
-      "Edit(.claude/**/*)"
-    ]
-  }
-}