feat(cli): extract Obelisk runtime into npm package

Add @obelisk-apps/cli with the existing build, search, query, and attune contract plus official skill installation.

Separate the docs-only skill artifact, bootstrap installer, release layout, cross-platform CI, and package-level regression coverage.

package-lock.json

@@ -214,6 +214,10 @@
         "url": "https://github.com/sponsors/nzakas"
       }
     },
+    "node_modules/@obelisk-apps/cli": {
+      "resolved": "packages/cli",
+      "link": true
+    },
     "node_modules/@obelisk/core": {
       "resolved": "packages/core",
       "link": true
@@ -1283,6 +1287,17 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "packages/cli": {
+      "name": "@obelisk-apps/cli",
+      "version": "0.1.0",
+      "license": "AGPL-3.0",
+      "bin": {
+        "obelisk": "dist/cli/src/obelisk.js"
+      },
+      "engines": {
+        "node": ">=22.13.0"
+      }
+    },
     "packages/core": {
       "name": "@obelisk/core",
       "version": "0.1.0"