refactor: convert to bun workspaces monorepo

- Move web app into apps/web/
- Create packages/shared/ with shared types
- Create plugins/decky-vault/ scaffold
- Root package.json manages workspaces only

.gitignore

@@ -1,56 +1,45 @@
-# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+node_modules/
+.next/
+*.tsbuildinfo
+dist/
 
-# dependencies
-/node_modules
-/.pnp
-.pnp.*
-.yarn/*
-!.yarn/patches
-!.yarn/plugins
-!.yarn/releases
-!.yarn/versions
+# Environment
+.env
+.env.local
+.env.*.local
+.env.production
 
-# testing
-/coverage
-
-# next.js
-/.next/
-/out/
-
-# production
-/build
-
-# misc
+# OS
 .DS_Store
-*.pem
+*.swp
+*.swo
 
-# debug
+# IDE
+.idea/
+.vscode/
+*.sublime-*
+
+# Certificates (generated locally)
+certificates/
+
+# next.js auto-generated
+next-env.d.ts
+
+# serwist build artifact
+**/public/sw.js
+
+# debug logs
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 .pnpm-debug.log*
 
-# env files (can opt-in for committing if needed)
-.env*
-!.env.example
-
 # vercel
 .vercel
 
-# typescript
-*.tsbuildinfo
-next-env.d.ts
-
-# serwist build artifact
-public/sw.js
-
-/docs/superpowers
-
-# git worktrees
-.worktrees/
+# pi agent
 .pi/
-
 .superpowers/
 
-# temporary files
-post.md
+# docs/superpowers
+/docs/superpowers