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/characters/ember_ashvale.yaml

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+# Ember Ashvale / Ezra Ashvale
+# SR | Glass Cannon | Lumberjack
+# The player's first realistic gacha pull in the standard banner.
+# SR rarity — reliable specialist who makes the early economy viable.
+# Designed to demonstrate that non-SSR characters stay meaningfully useful:
+# her lumberjack bonus feeds the wood bottleneck that the manual work system
+# is built around.
+
+$schema: "xyvera/content-schema/character/v1"
+
+id: ember_ashvale
+
+name:
+  female: "Ember Ashvale"
+  male: "Ezra Ashvale"
+
+rarity: SR
+combat_role: glass_cannon
+profession: lumberjack
+region_origin: heartwood_vale
+element: fire
+personality: energetic_optimist
+
+base_stats:
+  hp: 680
+  attack: 195
+  defense: 60
+  speed: 115
+  crit_rate: 0.10
+  crit_damage: 1.8
+
+skills:
+  - id: blaze_cut
+    name: "Blaze Cut"
+    type: active
+    description: >
+      Deals 220% ATK as fire damage to one enemy. If the target is on fire (burning
+      status), also deals 80% ATK bonus damage.
+    max_level: 5
+    upgrade_cost_per_level:
+      knowledge: 25
+      gold: 180
+
+  - id: sawdust_flurry
+    name: "Sawdust Flurry"
+    type: passive
+    description: >
+      Passive: each time Ember defeats an enemy, she gains +8% attack speed for
+      2 turns (stacks up to 3 times).
+    max_level: 3
+    upgrade_cost_per_level:
+      knowledge: 15
+      gold: 120
+
+  - id: quick_harvest
+    name: "Quick Harvest"
+    type: passive
+    description: >
+      Village passive: when assigned to a Lumber Camp slot, adds a 20% chance per
+      hour to produce a bonus burst of wood equal to 30 minutes of base output.
+      This bonus chance does not require manual input.
+    max_level: 5
+    upgrade_cost_per_level:
+      knowledge: 10
+      gold: 80
+
+suitability_bonuses:
+  primary_profession_multiplier: 1.5
+  secondary_professions:
+    - farmer  # comfortable outdoors
+
+bond_hooks:
+  - cheerful
+  - mentor_target
+  - competitive
+
+lore_summary: >
+  An apprentice woodcutter who followed a glowing deer into a forest and came out
+  somewhere entirely different. She's still looking for the deer, but in the meantime
+  the logs aren't going to cut themselves.

content/data/characters/lyra_stoneheart.yaml

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+# Lyra Stoneheart / Leon Stoneheart
+# SSR | Tank | Miner
+# Starter-region character. Designed to anchor the early assignment economy:
+# she is the primary miner for the PoC and functions as the front-row tank
+# in combat. Her kit is intentionally simple — the first character the player
+# will level up and use to validate both the assignment and combat systems.
+
+$schema: "xyvera/content-schema/character/v1"
+
+id: lyra_stoneheart
+
+name:
+  female: "Lyra Stoneheart"
+  male: "Leon Stoneheart"
+
+rarity: SSR
+combat_role: tank
+profession: miner
+region_origin: heartwood_vale
+element: earth
+personality: stoic_protector
+
+base_stats:
+  hp: 1200
+  attack: 80
+  defense: 160
+  speed: 70
+  crit_rate: 0.04
+  crit_damage: 1.4
+
+skills:
+  - id: stone_resolve
+    name: "Stone Resolve"
+    type: passive
+    description: >
+      Passive: when HP drops below 40%, gain a shield equal to 15% of max HP.
+      Triggers once per combat.
+    max_level: 5
+    upgrade_cost_per_level:
+      knowledge: 20
+      gold: 150
+
+  - id: seismic_slam
+    name: "Seismic Slam"
+    type: ultimate
+    description: >
+      Deals 180% ATK as earth damage to all front-row enemies and reduces their
+      defense by 20% for 2 turns.
+    max_level: 5
+    upgrade_cost_per_level:
+      knowledge: 40
+      gold: 300
+
+  - id: miners_grit
+    name: "Miner's Grit"
+    type: passive
+    description: >
+      Village passive: when assigned to a Mining slot, stone output gains an
+      additional +10% per skill level on top of the suitability multiplier.
+    max_level: 5
+    upgrade_cost_per_level:
+      knowledge: 15
+      gold: 100
+
+suitability_bonuses:
+  primary_profession_multiplier: 1.6   # slightly above default 1.5 due to Miner's Grit
+  secondary_professions:
+    - construction                      # knows how to work with stone
+
+bond_hooks:
+  - loyalty
+  - protector
+  - stoic
+
+lore_summary: >
+  A former quarry foreman who arrived in this world mid-shift, still gripping her pickaxe.
+  She doesn't talk much about home, but she builds like she's trying to recreate it.

content/data/characters/sable_quillworth.yaml

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+# Sable Quillworth / Sebastian Quillworth
+# SR | Support | Researcher
+# The knowledge-economy anchor. Researchers unlock skill upgrades and building
+# improvements, so this character is critical to demonstrating that the
+# profession assignment system has strategic depth beyond raw resource output.
+# Support role in combat — placed in the backrow, buffs the team.
+
+$schema: "xyvera/content-schema/character/v1"
+
+id: sable_quillworth
+
+name:
+  female: "Sable Quillworth"
+  male: "Sebastian Quillworth"
+
+rarity: SR
+combat_role: support
+profession: researcher
+region_origin: heartwood_vale
+element: "null"
+personality: methodical_curious
+
+base_stats:
+  hp: 760
+  attack: 95
+  defense: 110
+  speed: 90
+  crit_rate: 0.05
+  crit_damage: 1.5
+
+skills:
+  - id: analytical_boost
+    name: "Analytical Boost"
+    type: active
+    description: >
+      Increases all allies' ATK by 18% and DEF by 12% for 3 turns. At skill
+      level 3+, also removes one debuff from a random ally.
+    max_level: 5
+    upgrade_cost_per_level:
+      knowledge: 30
+      gold: 200
+
+  - id: field_notes
+    name: "Field Notes"
+    type: passive
+    description: >
+      Passive: at the start of each combat round, Sable gains 1 knowledge
+      (village resource) per enemy still alive (capped at 5 per round, 20 per combat).
+      Knowledge gained this way is credited to the player's balance at combat end.
+    max_level: 3
+    upgrade_cost_per_level:
+      knowledge: 20
+      gold: 150
+
+  - id: deep_study
+    name: "Deep Study"
+    type: passive
+    description: >
+      Village passive: when assigned to a Research Post, knowledge output is
+      increased by 30% and skill upgrade costs for all characters are reduced by 5%.
+      The cost reduction stacks additively if multiple researchers are assigned.
+    max_level: 5
+    upgrade_cost_per_level:
+      knowledge: 35
+      gold: 250
+
+suitability_bonuses:
+  primary_profession_multiplier: 1.5
+  secondary_professions: []  # purely academic; no secondary bonus
+
+bond_hooks:
+  - intellectual
+  - reserved
+  - hidden_warmth
+
+lore_summary: >
+  A librarian's assistant who was cataloguing a collection of supposedly mundane travel
+  journals when the pages started describing places she'd never heard of — and then
+  she was in one of them. She brought three notebooks and has already filled two.