fix: add .vercelignore for Vercel web deploys (#1505)

* fix: ignore non-web files in vercel deploy

* fix: keep docs app in vercel uploads

---------

Co-authored-by: Eve <eve@multica.ai>

.vercelignore

@@ -0,0 +1,71 @@
+# Deploy the frontend apps from the monorepo root.
+# Keep apps/web, apps/docs, shared packages, and root workspace metadata.
+# Exclude unrelated workspaces and local artifacts that can make
+# `vercel deploy` upload far more than the app needs.
+
+.agent_context
+.claude
+.context
+.env*
+.envrc
+.tool-versions
+_features
+.kilo
+.idea
+.DS_Store
+.husky
+.vscode
+
+!.env.example
+
+.dockerignore
+.goreleaser.yml
+AGENTS.md
+CLAUDE.md
+CLI_AND_DAEMON.md
+CLI_INSTALL.md
+CONTRIBUTING.md
+Dockerfile
+Dockerfile.web
+HANDOFF_ARCHITECTURE_AUDIT.md
+Makefile
+README.md
+README.zh-CN.md
+SELF_HOSTING.md
+SELF_HOSTING_ADVANCED.md
+SELF_HOSTING_AI.md
+docker-compose*.yml
+playwright.config.ts
+scripts
+skills-lock.json
+
+.github
+docker
+docs
+e2e
+server
+apps/desktop
+
+*.log
+*.pid
+*.tsbuildinfo
+
+.cache
+.next
+.pnpm-store
+.turbo
+.vercel
+coverage
+test-results
+playwright-report
+data
+
+node_modules
+bin
+dist
+out
+build
+dist-electron
+
+*.app
+*.dmg