chore: bootstrap lean sysadmin-chronicles repo

Import the runnable game code, content, docs, scripts, and repo guidance while leaving local agent state, dependency installs, build output, and backup copies out of the published tree.

content/dialogue/marcus-day-one.json

@@ -0,0 +1,19 @@
+{
+  "id": "marcus-day-one",
+  "character": "marcus",
+  "quest_id": "",
+  "series_id": "marcus-main",
+  "series_position": 0,
+  "messages": [
+    {
+      "stage": "welcome",
+      "trigger": "immediate",
+      "body": "Welcome. You're replacing Dale. Nobody will tell you what Dale did because it's complicated. Your badge number is pending — Dave from Finance has your temp credentials. He's on three today."
+    },
+    {
+      "stage": "setup",
+      "trigger": "immediate",
+      "body": "Your machine is ares. You'll need to set up SSH keys before anything else will work. I'll send you the first ticket once provisioning clears. Probably this morning."
+    }
+  ]
+}