🔧 chore(playbook): align repo with latest workflow

sync playbook-managed rules and prompts.
migrate memory-bank to the new structure and move plans to docs/superpowers/plans.
keep product README files untouched.

playbook.toml

@@ -1,6 +1,7 @@
 [playbook]
 project_root = "."
 deploy_root = "docs/standards/playbook"
+claude_md = "CLAUDE.md"
 
 [sync_rules]
 force = true
@@ -19,9 +20,3 @@ no_backup = true
 langs = ["cpp", "tsl", "markdown"]
 gitattr_mode = "append"
 no_backup = true
-
-[install_skills]
-mode = "all"
-agents_home = "~/.agents"
-skill_link = "~/.claude"
-no_backup = true