Initial commit: Theriapolis baseline at port/godot branch point

Captures the pre-Godot-port state of the codebase. This is the rollback
anchor for the Godot port (M0 of theriapolis-rpg-implementation-plan-godot-port.md).
All Phase 0 through Phase 6.5 work is included; Phase 7 is in flight.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Content/Data/quests/main_act_i_001_arrival.json

@@ -0,0 +1,66 @@
+{
+  "id": "main_act_i_001_arrival",
+  "title": "Arrival in Millhaven",
+  "description": "A letter from Magistrate Vossler asks you to settle your parents' estate. Visit the magistrate, take the case file your parents left behind, and learn what they died investigating.",
+  "hidden": false,
+
+  "auto_start_when": [
+    { "kind": "enter_anchor", "anchor": "millhaven" }
+  ],
+
+  "entry_step": "intro",
+
+  "steps": [
+    {
+      "id": "intro",
+      "title": "Arrive in Millhaven",
+      "description": "Make your way to the magistrate's hall in Millhaven.",
+      "waypoint": "anchor:millhaven",
+      "trigger_conditions": [
+        { "kind": "enter_anchor", "anchor": "millhaven" }
+      ],
+      "on_enter": [
+        { "kind": "set_flag", "flag": "act_i_arrived_at_millhaven" }
+      ],
+      "outcomes": [
+        { "next": "find_magistrate" }
+      ]
+    },
+    {
+      "id": "find_magistrate",
+      "title": "Speak with Magistrate Vossler",
+      "description": "Magistrate Vossler holds the case file your parents left behind.",
+      "waypoint": "role:millhaven.magistrate",
+      "trigger_conditions": [
+        { "kind": "flag_set", "flag": "spoke_to_millhaven_magistrate" }
+      ],
+      "outcomes": [
+        { "next": "investigate" }
+      ]
+    },
+    {
+      "id": "investigate",
+      "title": "Investigate Briarstead",
+      "description": "Read the journal. Talk to Constable Fenn or Grandmother Asha. Learn who your parents were before they died — and what they were investigating.",
+      "waypoint": "Briarstead — south of Millhaven, past the millpond",
+      "trigger_conditions": [
+        { "kind": "flag_set", "flag": "act_i_briarstead_searched" }
+      ],
+      "outcomes": [
+        {
+          "next": "complete",
+          "effects": [
+            { "kind": "give_xp", "xp": 200 },
+            { "kind": "start_quest", "quest": "main_act_i_003_following_dead" }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "complete",
+      "title": "What You Carry",
+      "description": "You have the journal, the formula, the names list, and — depending on how the climax went — the Maw's sigil. The road out of Millhaven leads east toward Thornfield, where the first name on the list lives.",
+      "completes_quest": true
+    }
+  ]
+}