feat: orchestration harness, selective install, observer improvements

schemas/ecc-install-config.schema.json

@@ -0,0 +1,58 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "ECC Install Config",
+  "type": "object",
+  "additionalProperties": false,
+  "required": [
+    "version"
+  ],
+  "properties": {
+    "$schema": {
+      "type": "string",
+      "minLength": 1
+    },
+    "version": {
+      "type": "integer",
+      "const": 1
+    },
+    "target": {
+      "type": "string",
+      "enum": [
+        "claude",
+        "cursor",
+        "antigravity",
+        "codex",
+        "opencode"
+      ]
+    },
+    "profile": {
+      "type": "string",
+      "pattern": "^[a-z0-9-]+$"
+    },
+    "modules": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "pattern": "^[a-z0-9-]+$"
+      }
+    },
+    "include": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "pattern": "^(baseline|lang|framework|capability):[a-z0-9-]+$"
+      }
+    },
+    "exclude": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "pattern": "^(baseline|lang|framework|capability):[a-z0-9-]+$"
+      }
+    },
+    "options": {
+      "type": "object",
+      "additionalProperties": true
+    }
+  }
+}