Initial scaffold: Nakama backend, Godot client, content schema

Sets up the Step 1 (Project Foundation) and Step 2 (Content Schemas) scaffold
from the implementation sequence. Includes Docker Compose stack, Nakama
TypeScript module stubs, PostgreSQL migration, Godot 4 project shell with
scene stubs and NakamaClient singleton, YAML content schemas for all entity
types, and example data for 3 characters, 2 jobs, and all 7 core resources.

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

content/data/jobs/research_post.yaml

@@ -0,0 +1,32 @@
+# Research Post — Researcher job slot
+# Produces knowledge, which is consumed by skill upgrades and building research.
+# Knowledge is the second scarcity axis (after wood) — the design intent is that
+# players must choose between levelling characters fast (knowledge) versus
+# building the village faster (wood/stone).
+# manual_work_eligible is false here; manual focus stays on wood for PoC clarity.
+
+$schema: "xyvera/content-schema/job/v1"
+
+id: research_post
+name: "Research Post"
+description: >
+  Scholars and curious minds study the strange phenomena of this world.
+  Knowledge produced here is consumed by skill upgrades, building improvements,
+  and eventually advanced expedition planning.
+
+profession: researcher
+output_resource: knowledge
+base_output_per_hour: 6.0
+
+secondary_output:
+  resource: experience
+  rate_fraction: 0.25  # minor experience trickle — characters learn while working
+
+max_slots: 2
+
+unlock_condition:
+  building_level: 1  # requires the village hub to be upgraded once
+
+manual_work_eligible: false
+
+passive_cap_hours: 8.0