merge: integrate Shannon 3.0 with public v2.6.0

- preserve the versioned and non-TTY banners from public main
- keep workspace launch classification ahead of shared infrastructure setup
- carry the eleven-commit Agentic SAST feature history unchanged
- normalize Capella prompt endings to the accepted candidate tree

apps/cli/package.json

@@ -18,7 +18,7 @@
   },
   "dependencies": {
     "@clack/prompts": "^1.1.0",
-    "@temporalio/client": "^1.11.0",
+    "@temporalio/client": "1.15.0",
     "chokidar": "^5.0.0",
     "dotenv": "^17.3.1",
     "smol-toml": "^1.6.1"