feat(phase-4): WS2 + WS3 — Developer Portal (Next.js 14) and CLI tool (sentryagent)

WS2: Developer Portal (portal/)
- Standalone Next.js 14 + Tailwind CSS app — independent deployment
- Home page: hero, feature grid, CTA to /get-started
- /pricing: free tier limits table (10 agents, 1k calls/day) + paid tier CTA
- /sdks: all 4 SDKs (Node.js, Python, Go, Java) with install + code examples
- /api-explorer: Swagger UI from NEXT_PUBLIC_API_URL/openapi.json, persistAuthorization
- /get-started: 4-step wizard (setup → register agent → credentials → SDK snippet)
- Shared Nav component with active-link highlighting
- Build: 8/8 static pages, zero TypeScript errors

WS3: CLI Tool (cli/ — npm package: sentryagent)
- configure, register-agent, list-agents, issue-token, rotate-credentials, tail-audit-log
- Auto OAuth2 token fetch + 30s-buffer cache via client_credentials flow
- chalk-formatted table output, confirmation prompts, bounded audit log dedup
- bash + zsh shell completion scripts
- README with installation, all commands, and completion setup
- Build: tsc clean, node dist/index.js --help verified

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cli/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "sentryagent",
+  "version": "1.0.0",
+  "description": "SentryAgent.ai CLI — manage agents, tokens, and audit logs",
+  "main": "dist/index.js",
+  "bin": {
+    "sentryagent": "./dist/index.js"
+  },
+  "scripts": {
+    "build": "tsc",
+    "dev": "ts-node src/index.ts",
+    "clean": "rm -rf dist"
+  },
+  "dependencies": {
+    "chalk": "^5.3.0",
+    "commander": "^12.1.0"
+  },
+  "devDependencies": {
+    "@types/node": "^20.12.7",
+    "typescript": "^5.4.5",
+    "ts-node": "^10.9.2"
+  },
+  "engines": {
+    "node": ">=18.0.0"
+  },
+  "keywords": [
+    "sentryagent",
+    "agentidp",
+    "cli",
+    "agents",
+    "identity"
+  ],
+  "license": "MIT"
+}