tooling: install script, workspace file, and dev-restart helper

- install.py — idempotent setup script (venv, systemd service, linger,
  auth checks); supports --check for read-only status inspection
- .stignore — exclude .venv and runtime dirs from Syncthing so each
  host maintains its own machine-local venv
- Cortex_and_Inara.code-workspace — VS Code workspace (service, personas,
  docs folders; launch config for uvicorn --reload)
- dev-restart.sh — SSH wrapper to restart Cortex on the gaming laptop
  and tail logs; supports restart / logs / status subcommands

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

Cortex_and_Inara.code-workspace

@@ -0,0 +1,75 @@
+{
+  "folders": [
+    {
+      "name": "cortex (service)",
+      "path": "cortex"
+    },
+    {
+      "name": "home (personas)",
+      "path": "home"
+    },
+    {
+      "name": "documentation",
+      "path": "documentation"
+    },
+    {
+      "name": "docs (integrations)",
+      "path": "docs"
+    },
+    {
+      "name": "project root",
+      "path": "."
+    }
+  ],
+  "settings": {
+    "files.exclude": {
+      "**/__pycache__": true,
+      "**/*.pyc": true,
+      "cortex/.venv": true,
+      "cortex/data": true
+    },
+    "search.exclude": {
+      "**/__pycache__": true,
+      "cortex/.venv": true,
+      "cortex/data": true,
+      "home/**/sessions": true,
+      "home/**/session_data": true
+    },
+    "[python]": {
+      "editor.formatOnSave": false
+    },
+    "editor.rulers": [100],
+    "files.associations": {
+      "*.env": "dotenv",
+      "*.env.default": "dotenv"
+    }
+  },
+  "extensions": {
+    "recommendations": [
+      "ms-python.python",
+      "ms-python.vscode-pylance",
+      "humao.rest-client",
+      "tamasfe.even-better-toml"
+    ]
+  },
+  "launch": {
+    "version": "0.2.0",
+    "configurations": [
+      {
+        "name": "Cortex (uvicorn dev)",
+        "type": "python",
+        "request": "launch",
+        "module": "uvicorn",
+        "args": [
+          "main:app",
+          "--host", "0.0.0.0",
+          "--port", "8000",
+          "--reload"
+        ],
+        "cwd": "${workspaceFolder:cortex (service)}",
+        "envFile": "${workspaceFolder:cortex (service)}/.env",
+        "justMyCode": false
+      }
+    ]
+  }
+}