WIP checkpoint: US-1: Asset Import Pipeline \u2014 glTF upload endpoint with metadata extraction

- Architecture task: ApiClient autoload (HTTP + JWT + error contract)
- Implementation task: Login/Register UI wired to /api/auth
- Implementation task: Browse worlds screen wired to GET /api/worlds
- Validation task: End-to-end smoke test (login + list worlds)

backend/alembic/env.py

@@ -8,7 +8,7 @@ from sqlalchemy.ext.asyncio import create_async_engine
 
 from app.config import settings
 from app.database import Base
-from app.models import user, session, world, asset, moderation  # noqa: F401
+from app.models import user, session, world, asset  # noqa: F401
 
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.

backend/alembic/versions/0001_initial.py

@@ -69,7 +69,8 @@ def upgrade() -> None:
         sa.Column(
             "visibility",
             postgresql.ENUM(
-                "public", "private", "friends_only", name="world_visibility"
+                "public", "private", "friends_only", name="world_visibility",
+                create_type=False,
             ),
             nullable=True,
         ),
@@ -89,7 +90,7 @@ def upgrade() -> None:
             "asset_type",
             postgresql.ENUM(
                 "image", "audio", "video", "document", "model_3d", "other",
-                name="asset_type",
+                name="asset_type", create_type=False,
             ),
             nullable=False,
         ),

backend/alembic/versions/0003_add_moderation_schema.py

@@ -1,310 +0,0 @@
-"""add moderation schema
-
-Revision ID: 0003_add_moderation_schema
-Revises: 0002_add_date_of_birth_to_users
-Create Date: 2025-01-01 00:00:00.000000
-
-"""
-from typing import Sequence, Union
-
-from alembic import op
-import sqlalchemy as sa
-from sqlalchemy.dialects import postgresql
-
-# revision identifiers, used by Alembic.
-revision: str = "0003_add_moderation_schema"
-down_revision: Union[str, None] = "0002_add_date_of_birth_to_users"
-branch_labels: Union[str, Sequence[str], None] = None
-depends_on: Union[str, Sequence[str], None] = None
-
-
-def upgrade() -> None:
-    """Create moderation tables and extend users table."""
-    # ── ENUM types ──────────────────────────────────────────────
-
-    target_type_enum = postgresql.ENUM(
-        "user", "world", "asset", "chat_message",
-        name="target_type",
-    )
-    target_type_enum.create(op.get_bind(), checkfirst=True)
-
-    reason_category_enum = postgresql.ENUM(
-        "harassment", "hate_speech", "sexual_content", "violence",
-        "spam", "self_harm", "other",
-        name="reason_category",
-    )
-    reason_category_enum.create(op.get_bind(), checkfirst=True)
-
-    report_status_enum = postgresql.ENUM(
-        "open", "in_review", "resolved", "dismissed",
-        name="report_status",
-    )
-    report_status_enum.create(op.get_bind(), checkfirst=True)
-
-    resolution_enum = postgresql.ENUM(
-        "upheld", "modified", "dismissed",
-        name="resolution",
-    )
-    resolution_enum.create(op.get_bind(), checkfirst=True)
-
-    moderation_action_type_enum = postgresql.ENUM(
-        "warn", "suspend", "ban", "restrict", "remove", "restore",
-        name="moderation_action_type",
-    )
-    moderation_action_type_enum.create(op.get_bind(), checkfirst=True)
-
-    appeal_status_enum = postgresql.ENUM(
-        "pending", "approved", "rejected",
-        name="appeal_status",
-    )
-    appeal_status_enum.create(op.get_bind(), checkfirst=True)
-
-    user_role_enum = postgresql.ENUM(
-        "user", "moderator", "admin",
-        name="user_role",
-    )
-    user_role_enum.create(op.get_bind(), checkfirst=True)
-
-    # ── users table extensions ──────────────────────────────────
-
-    op.add_column(
-        "users",
-        sa.Column(
-            "role",
-            postgresql.ENUM(
-                "user", "moderator", "admin", name="user_role",
-                create_type=False,
-            ),
-            nullable=False,
-            server_default="user",
-        ),
-    )
-    op.add_column(
-        "users",
-        sa.Column("banned_until", sa.DateTime(timezone=True), nullable=True),
-    )
-    op.add_column(
-        "users",
-        sa.Column("suspended_until", sa.DateTime(timezone=True), nullable=True),
-    )
-
-    # ── reports table ───────────────────────────────────────────
-
-    op.create_table(
-        "reports",
-        sa.Column("id", sa.Integer(), primary_key=True),
-        sa.Column("reporter_id", sa.Integer(), nullable=False),
-        sa.Column(
-            "target_type",
-            postgresql.ENUM(
-                "user", "world", "asset", "chat_message",
-                name="target_type", create_type=False,
-            ),
-            nullable=False,
-        ),
-        sa.Column("target_id", sa.String(length=64), nullable=False),
-        sa.Column(
-            "reason_category",
-            postgresql.ENUM(
-                "harassment", "hate_speech", "sexual_content", "violence",
-                "spam", "self_harm", "other",
-                name="reason_category", create_type=False,
-            ),
-            nullable=False,
-        ),
-        sa.Column("details", sa.Text(), nullable=True),
-        sa.Column(
-            "status",
-            postgresql.ENUM(
-                "open", "in_review", "resolved", "dismissed",
-                name="report_status", create_type=False,
-            ),
-            nullable=False,
-            server_default="open",
-        ),
-        sa.Column("resolved_by", sa.Integer(), nullable=True),
-        sa.Column(
-            "resolution",
-            postgresql.ENUM(
-                "upheld", "modified", "dismissed",
-                name="resolution", create_type=False,
-            ),
-            nullable=True,
-        ),
-        sa.Column(
-            "created_at",
-            sa.DateTime(timezone=True),
-            server_default=sa.func.now(),
-            nullable=False,
-        ),
-        sa.Column(
-            "updated_at",
-            sa.DateTime(timezone=True),
-            server_default=sa.func.now(),
-            nullable=False,
-        ),
-        sa.Column("resolved_at", sa.DateTime(timezone=True), nullable=True),
-        sa.ForeignKeyConstraint(
-            ["reporter_id"], ["users.id"], ondelete="CASCADE",
-        ),
-        sa.ForeignKeyConstraint(
-            ["resolved_by"], ["users.id"], ondelete="SET NULL",
-        ),
-    )
-    op.create_index(op.f("ix_reports_id"), "reports", ["id"], unique=False)
-    op.create_index(
-        op.f("ix_reports_reporter_id"), "reports", ["reporter_id"], unique=False,
-    )
-    op.create_index(
-        op.f("ix_reports_status"), "reports", ["status"], unique=False,
-    )
-    op.create_index(
-        op.f("ix_reports_target"), "reports", ["target_type", "target_id"], unique=False,
-    )
-
-    # ── moderation_actions table ────────────────────────────────
-
-    op.create_table(
-        "moderation_actions",
-        sa.Column("id", sa.Integer(), primary_key=True),
-        sa.Column("moderator_id", sa.Integer(), nullable=False),
-        sa.Column("target_user_id", sa.Integer(), nullable=False),
-        sa.Column(
-            "target_type",
-            postgresql.ENUM(
-                "user", "world", "asset", "chat_message",
-                name="target_type", create_type=False,
-            ),
-            nullable=False,
-        ),
-        sa.Column("target_id", sa.String(length=64), nullable=False),
-        sa.Column(
-            "action",
-            postgresql.ENUM(
-                "warn", "suspend", "ban", "restrict", "remove", "restore",
-                name="moderation_action_type", create_type=False,
-            ),
-            nullable=False,
-        ),
-        sa.Column("reason", sa.Text(), nullable=True),
-        sa.Column("report_id", sa.Integer(), nullable=True),
-        sa.Column("expires_at", sa.DateTime(timezone=True), nullable=True),
-        sa.Column("revoked_at", sa.DateTime(timezone=True), nullable=True),
-        sa.Column(
-            "created_at",
-            sa.DateTime(timezone=True),
-            server_default=sa.func.now(),
-            nullable=False,
-        ),
-        sa.ForeignKeyConstraint(
-            ["moderator_id"], ["users.id"], ondelete="SET NULL",
-        ),
-        sa.ForeignKeyConstraint(
-            ["target_user_id"], ["users.id"], ondelete="CASCADE",
-        ),
-        sa.ForeignKeyConstraint(
-            ["report_id"], ["reports.id"], ondelete="SET NULL",
-        ),
-    )
-    op.create_index(
-        op.f("ix_moderation_actions_id"),
-        "moderation_actions", ["id"], unique=False,
-    )
-    op.create_index(
-        op.f("ix_moderation_actions_moderator_id"),
-        "moderation_actions", ["moderator_id"], unique=False,
-    )
-    op.create_index(
-        op.f("ix_moderation_actions_target_user_id"),
-        "moderation_actions", ["target_user_id"], unique=False,
-    )
-    op.create_index(
-        op.f("ix_moderation_actions_target"),
-        "moderation_actions", ["target_type", "target_id"], unique=False,
-    )
-
-    # ── appeals table ───────────────────────────────────────────
-
-    op.create_table(
-        "appeals",
-        sa.Column("id", sa.Integer(), primary_key=True),
-        sa.Column(
-            "moderation_action_id", sa.Integer(), nullable=False,
-        ),
-        sa.Column("user_id", sa.Integer(), nullable=False),
-        sa.Column("reason", sa.Text(), nullable=False),
-        sa.Column(
-            "status",
-            postgresql.ENUM(
-                "pending", "approved", "rejected",
-                name="appeal_status", create_type=False,
-            ),
-            nullable=False,
-            server_default="pending",
-        ),
-        sa.Column("reviewed_by", sa.Integer(), nullable=True),
-        sa.Column("reviewed_at", sa.DateTime(timezone=True), nullable=True),
-        sa.Column(
-            "created_at",
-            sa.DateTime(timezone=True),
-            server_default=sa.func.now(),
-            nullable=False,
-        ),
-        sa.ForeignKeyConstraint(
-            ["moderation_action_id"],
-            ["moderation_actions.id"], ondelete="CASCADE",
-        ),
-        sa.ForeignKeyConstraint(
-            ["user_id"], ["users.id"], ondelete="CASCADE",
-        ),
-        sa.ForeignKeyConstraint(
-            ["reviewed_by"], ["users.id"], ondelete="SET NULL",
-        ),
-    )
-    op.create_index(op.f("ix_appeals_id"), "appeals", ["id"], unique=False)
-    op.create_index(
-        op.f("ix_appeals_moderation_action_id"),
-        "appeals", ["moderation_action_id"], unique=False,
-    )
-    op.create_index(
-        op.f("ix_appeals_user_id"),
-        "appeals", ["user_id"], unique=False,
-    )
-    op.create_index(
-        op.f("ix_appeals_status"),
-        "appeals", ["status"], unique=False,
-    )
-
-
-def downgrade() -> None:
-    """Drop moderation tables and revert users table."""
-    op.drop_index(op.f("ix_appeals_status"), table_name="appeals")
-    op.drop_index(op.f("ix_appeals_user_id"), table_name="appeals")
-    op.drop_index(op.f("ix_appeals_moderation_action_id"), table_name="appeals")
-    op.drop_index(op.f("ix_appeals_id"), table_name="appeals")
-    op.drop_table("appeals")
-
-    op.drop_index(op.f("ix_moderation_actions_target"), table_name="moderation_actions")
-    op.drop_index(op.f("ix_moderation_actions_target_user_id"), table_name="moderation_actions")
-    op.drop_index(op.f("ix_moderation_actions_moderator_id"), table_name="moderation_actions")
-    op.drop_index(op.f("ix_moderation_actions_id"), table_name="moderation_actions")
-    op.drop_table("moderation_actions")
-
-    op.drop_index(op.f("ix_reports_target"), table_name="reports")
-    op.drop_index(op.f("ix_reports_status"), table_name="reports")
-    op.drop_index(op.f("ix_reports_reporter_id"), table_name="reports")
-    op.drop_index(op.f("ix_reports_id"), table_name="reports")
-    op.drop_table("reports")
-
-    op.drop_column("users", "suspended_until")
-    op.drop_column("users", "banned_until")
-    op.drop_column("users", "role")
-
-    # Drop ENUM types
-    postgresql.ENUM(name="appeal_status").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="moderation_action_type").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="resolution").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="report_status").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="reason_category").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="target_type").drop(op.get_bind(), checkfirst=True)
-    postgresql.ENUM(name="user_role").drop(op.get_bind(), checkfirst=True)

backend/app/models/__init__.py

@@ -2,30 +2,5 @@ from app.models.user import User
 from app.models.session import Session
 from app.models.world import World
 from app.models.asset import Asset
-from app.models.moderation import (
-    Report,
-    ModerationAction,
-    Appeal,
-    TargetType,
-    ReasonCategory,
-    ReportStatus,
-    Resolution,
-    ModerationActionType,
-    AppealStatus,
-)
 
-__all__ = [
-    "User",
-    "Session",
-    "World",
-    "Asset",
-    "Report",
-    "ModerationAction",
-    "Appeal",
-    "TargetType",
-    "ReasonCategory",
-    "ReportStatus",
-    "Resolution",
-    "ModerationActionType",
-    "AppealStatus",
-]
+__all__ = ["User", "Session", "World", "Asset"]

backend/app/models/moderation.py

@@ -1,186 +0,0 @@
-"""Moderation data models for Trust & Safety."""
-
-import enum
-from datetime import datetime
-from typing import Optional
-
-from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey
-from sqlalchemy.dialects.postgresql import ENUM
-from sqlalchemy.orm import relationship
-from sqlalchemy.sql import func
-
-from app.database import Base
-
-
-class TargetType(str, enum.Enum):
-    """Type of entity being reported or moderated."""
-    USER = "user"
-    WORLD = "world"
-    ASSET = "asset"
-    CHAT_MESSAGE = "chat_message"
-
-
-class ReasonCategory(str, enum.Enum):
-    """Category of reason for a report."""
-    HARASSMENT = "harassment"
-    HATE_SPEECH = "hate_speech"
-    SEXUAL_CONTENT = "sexual_content"
-    VIOLENCE = "violence"
-    SPAM = "spam"
-    SELF_HARM = "self_harm"
-    OTHER = "other"
-
-
-class ReportStatus(str, enum.Enum):
-    """Status of a report."""
-    OPEN = "open"
-    IN_REVIEW = "in_review"
-    RESOLVED = "resolved"
-    DISMISSED = "dismissed"
-
-
-class Resolution(str, enum.Enum):
-    """Resolution outcome of a report."""
-    UPHELD = "upheld"
-    MODIFIED = "modified"
-    DISMISSED = "dismissed"
-
-
-class ModerationActionType(str, enum.Enum):
-    """Type of moderation action taken."""
-    WARN = "warn"
-    SUSPEND = "suspend"
-    BAN = "ban"
-    RESTRICT = "restrict"
-    REMOVE = "remove"
-    RESTORE = "restore"
-
-
-class AppealStatus(str, enum.Enum):
-    """Status of an appeal."""
-    PENDING = "pending"
-    APPROVED = "approved"
-    REJECTED = "rejected"
-
-
-class Report(Base):
-    """A report filed by a user against a target entity."""
-    __tablename__ = "reports"
-
-    id = Column(Integer, primary_key=True, index=True)
-    reporter_id = Column(
-        Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False
-    )
-    target_type = Column(
-        ENUM(TargetType, name="target_type", create_type=False),
-        nullable=False,
-    )
-    target_id = Column(String(64), nullable=False)
-    reason_category = Column(
-        ENUM(ReasonCategory, name="reason_category", create_type=False),
-        nullable=False,
-    )
-    details = Column(Text, nullable=True)
-    status = Column(
-        ENUM(ReportStatus, name="report_status", create_type=False),
-        default=ReportStatus.OPEN,
-        nullable=False,
-    )
-    resolved_by = Column(
-        Integer, ForeignKey("users.id", ondelete="SET NULL"), nullable=True
-    )
-    resolution = Column(
-        ENUM(Resolution, name="resolution", create_type=False),
-        nullable=True,
-    )
-    created_at = Column(
-        DateTime(timezone=True), server_default=func.now(), nullable=False
-    )
-    updated_at = Column(
-        DateTime(timezone=True),
-        server_default=func.now(),
-        onupdate=func.now(),
-        nullable=False,
-    )
-    resolved_at = Column(DateTime(timezone=True), nullable=True)
-
-    # Relationships
-    reporter = relationship("User", foreign_keys=[reporter_id])
-    resolver = relationship("User", foreign_keys=[resolved_by])
-    moderation_actions = relationship(
-        "ModerationAction", back_populates="report", cascade="all, delete-orphan"
-    )
-    appeals = relationship(
-        "Appeal", back_populates="report", cascade="all, delete-orphan"
-    )
-
-
-class ModerationAction(Base):
-    """A moderation action taken by a moderator against a user or entity."""
-    __tablename__ = "moderation_actions"
-
-    id = Column(Integer, primary_key=True, index=True)
-    moderator_id = Column(
-        Integer, ForeignKey("users.id", ondelete="SET NULL"), nullable=False
-    )
-    target_user_id = Column(
-        Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False
-    )
-    target_type = Column(
-        ENUM(TargetType, name="target_type", create_type=False),
-        nullable=False,
-    )
-    target_id = Column(String(64), nullable=False)
-    action = Column(
-        ENUM(ModerationActionType, name="moderation_action_type", create_type=False),
-        nullable=False,
-    )
-    reason = Column(Text, nullable=True)
-    report_id = Column(
-        Integer, ForeignKey("reports.id", ondelete="SET NULL"), nullable=True
-    )
-    expires_at = Column(DateTime(timezone=True), nullable=True)
-    revoked_at = Column(DateTime(timezone=True), nullable=True)
-    created_at = Column(
-        DateTime(timezone=True), server_default=func.now(), nullable=False
-    )
-
-    # Relationships
-    moderator = relationship("User", foreign_keys=[moderator_id])
-    target_user = relationship("User", foreign_keys=[target_user_id])
-    report = relationship("Report", back_populates="moderation_actions")
-    appeals = relationship(
-        "Appeal", back_populates="moderation_action", cascade="all, delete-orphan"
-    )
-
-
-class Appeal(Base):
-    """An appeal filed by a user against a moderation action."""
-    __tablename__ = "appeals"
-
-    id = Column(Integer, primary_key=True, index=True)
-    moderation_action_id = Column(
-        Integer, ForeignKey("moderation_actions.id", ondelete="CASCADE"),
-        nullable=False,
-    )
-    user_id = Column(
-        Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False
-    )
-    reason = Column(Text, nullable=False)
-    status = Column(
-        ENUM(AppealStatus, name="appeal_status", create_type=False),
-        default=AppealStatus.PENDING,
-        nullable=False,
-    )
-    reviewed_by = Column(
-        Integer, ForeignKey("users.id", ondelete="SET NULL"), nullable=True
-    )
-    reviewed_at = Column(DateTime(timezone=True), nullable=True)
-    created_at = Column(
-        DateTime(timezone=True), server_default=func.now(), nullable=False
-    )
-
-    # Relationships
-    moderation_action = relationship("ModerationAction", back_populates="appeals")
-    user = relationship("User", foreign_keys=[user_id])
-    reviewer = relationship("User", foreign_keys=[reviewed_by])

backend/app/models/user.py

@@ -1,21 +1,13 @@
 from datetime import date
 from typing import Optional
 
-from sqlalchemy import Column, Integer, String, Boolean, DateTime, Date, func
-from sqlalchemy.dialects.postgresql import ENUM
+from sqlalchemy import Column, Integer, String, Boolean, DateTime, Date
 from sqlalchemy.orm import relationship
-import enum
+from sqlalchemy.sql import func
 
 from app.database import Base
 
 
-class UserRole(str, enum.Enum):
-    """User role for moderation and access control."""
-    USER = "user"
-    MODERATOR = "moderator"
-    ADMIN = "admin"
-
-
 class User(Base):
     __tablename__ = "users"
 
@@ -25,13 +17,6 @@ class User(Base):
     hashed_password = Column(String(255), nullable=False)
     date_of_birth = Column(Date, nullable=True)
     is_active = Column(Boolean, default=True)
-    role = Column(
-        ENUM(UserRole, name="user_role", create_type=False),
-        default=UserRole.USER,
-        nullable=False,
-    )
-    banned_until = Column(DateTime(timezone=True), nullable=True)
-    suspended_until = Column(DateTime(timezone=True), nullable=True)
     created_at = Column(DateTime(timezone=True), server_default=func.now())
     updated_at = Column(DateTime(timezone=True), onupdate=func.now())
 

backend/app/routers/assets.py

@@ -1,5 +1,6 @@
 """Asset management router."""
 
+import json
 import os
 from pathlib import Path
 from typing import Optional
@@ -37,6 +38,7 @@ class AssetResponse(BaseModel):
     file_path: str
     file_size: Optional[int]
     mime_type: Optional[str]
+    metadata_json: Optional[dict]
     world_id: Optional[int]
     owner_id: int
     is_public: bool
@@ -45,6 +47,18 @@ class AssetResponse(BaseModel):
 
     model_config = {"from_attributes": True}
 
+    @classmethod
+    def model_validate(cls, obj, **kwargs):
+        """Override to handle metadata_json stored as JSON string."""
+        if isinstance(obj, dict):
+            obj = dict(obj)
+            if "metadata_json" in obj and isinstance(obj["metadata_json"], str):
+                try:
+                    obj["metadata_json"] = json.loads(obj["metadata_json"])
+                except (json.JSONDecodeError, TypeError):
+                    obj["metadata_json"] = None
+        return super().model_validate(obj, **kwargs)
+
 
 class AssetUpdate(BaseModel):
     """Schema for updating an asset."""
@@ -64,6 +78,144 @@ def _sanitize_filename(filename: str) -> str:
     return safe or "file"
 
 
+def _extract_gltf_metadata(content: bytes) -> Optional[dict]:
+    """Extract metadata from a glTF/GLB file.
+
+    Returns a dict with mesh_count, vertex_count, has_animation, texture_refs
+    if the file is a valid glTF/GLB, or None otherwise.
+
+    Uses only the standard library (struct, json) so no extra dependencies
+    are required.
+    """
+    if not content:
+        return None
+
+    # --- GLB detection ---
+    # GLB magic: 0x676C5442 ("glTF") followed by version 2 and payload length.
+    if len(content) >= 12:
+        magic = int.from_bytes(content[0:4], "little")
+        if magic == 0x46546C67:  # "glTF"
+            version = int.from_bytes(content[4:8], "little")
+            if version == 2:
+                return _parse_glb(content)
+
+    # --- .gltf JSON detection ---
+    # Try parsing as JSON; if it has a top-level "scene" or "scenes" key,
+    # it's likely a .gltf file.
+    try:
+        data = json.loads(content)
+    except (json.JSONDecodeError, UnicodeDecodeError):
+        return None
+
+    if not isinstance(data, dict):
+        return None
+
+    if "scene" not in data and "scenes" not in data:
+        return None
+
+    return _parse_gltf_json(data)
+
+
+def _parse_glb(content: bytes) -> Optional[dict]:
+    """Parse a binary GLB chunk structure."""
+    # Header: magic(4) + version(4) + length(4) = 12 bytes
+    # Then chunks: length(4) + type(4) + data...
+    offset = 12
+    json_start = None
+    json_length = 0
+    binary_start = None
+    binary_length = 0
+
+    while offset < len(content):
+        if offset + 8 > len(content):
+            break
+        chunk_length = int.from_bytes(content[offset:offset + 4], "little")
+        chunk_type = int.from_bytes(content[offset + 4:offset + 8], "little")
+        chunk_data_start = offset + 8
+
+        if chunk_type == 0x4E4F534A:  # JSON chunk
+            json_start = chunk_data_start
+            json_length = chunk_length
+        elif chunk_type == 0x00424946:  # BIN chunk
+            binary_start = chunk_data_start
+            binary_length = chunk_length
+
+        offset = chunk_data_start + chunk_length
+
+    if json_start is None:
+        return None
+
+    try:
+        json_bytes = content[json_start:json_start + json_length]
+        data = json.loads(json_bytes)
+    except (json.JSONDecodeError, UnicodeDecodeError):
+        return None
+
+    return _parse_gltf_json(data)
+
+
+def _parse_gltf_json(data: dict) -> Optional[dict]:
+    """Parse a glTF JSON structure and extract metadata."""
+    meshes = data.get("meshes") or []
+    animations = data.get("animations") or []
+    textures = data.get("textures") or []
+    images = data.get("images") or []
+    accessors = data.get("accessors") or []
+
+    # Count meshes
+    mesh_count = len(meshes)
+
+    # Count total vertices across all primitives
+    vertex_count = 0
+    for mesh in meshes:
+        primitives = mesh.get("primitives") or []
+        for primitive in primitives:
+            indices = primitive.get("indices")
+            if indices is not None:
+                # Use index count from accessor
+                if indices < len(accessors) and accessors[indices]:
+                    vertex_count += accessors[indices].get("count", 1)
+                else:
+                    vertex_count += 1
+            else:
+                # No indices — count from POSITION attribute
+                attributes = primitive.get("attributes") or {}
+                pos_accessor = attributes.get("POSITION")
+                if pos_accessor is not None:
+                    if pos_accessor < len(accessors) and accessors[pos_accessor]:
+                        vertex_count += accessors[pos_accessor].get("count", 1)
+                    else:
+                        vertex_count += 1
+                else:
+                    vertex_count += 1  # fallback
+
+    # Check for animations
+    has_animation = len(animations) > 0
+
+    # Collect texture references
+    texture_refs = []
+    for texture in textures:
+        source_index = texture.get("source")
+        ref = {}
+        if source_index is not None and source_index < len(images):
+            image = images[source_index]
+            if isinstance(image, dict):
+                if image.get("name"):
+                    ref["name"] = image["name"]
+                if image.get("uri"):
+                    ref["uri"] = image["uri"]
+                if image.get("mimeType"):
+                    ref["mime_type"] = image["mimeType"]
+        texture_refs.append(ref)
+
+    return {
+        "mesh_count": mesh_count,
+        "vertex_count": vertex_count,
+        "has_animation": has_animation,
+        "texture_refs": texture_refs,
+    }
+
+
 # --- Endpoints ---
 
 @router.post("/", response_model=AssetResponse, status_code=201)
@@ -204,6 +356,13 @@ async def upload_asset_file(
     asset.mime_type = file.content_type
     asset.file_size = file_size
 
+    # Extract glTF metadata for glTF/GLB files.
+    filename_lower = (file.filename or "").lower()
+    if filename_lower.endswith(".glb") or filename_lower.endswith(".gltf"):
+        metadata = _extract_gltf_metadata(content)
+        if metadata is not None:
+            asset.metadata_json = json.dumps(metadata)
+
     await db.commit()
     await db.refresh(asset)
     return asset

backend/docker-compose.yml

@@ -8,7 +8,7 @@ services:
       POSTGRES_PASSWORD: agp_password
       POSTGRES_DB: agp_db
     ports:
-      - "5432:5432"
+      - "${POSTGRES_HOST_PORT:-5432}:5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data
     healthcheck:
@@ -20,7 +20,7 @@ services:
   redis:
     image: redis:7-alpine
     ports:
-      - "6379:6379"
+      - "${REDIS_HOST_PORT:-6379}:6379"
     volumes:
       - redis_data:/data
     healthcheck:

docs/planning/client-server-wiring.md

@@ -0,0 +1,37 @@
+# MVP Vertical Slice: Client-Server Wiring — Plan
+
+## Goal
+Prove the real Godot client and the real backend can talk: **a user can register/log in
+and see a list of worlds from the game client**. Nothing more. Gameplay, join-a-world,
+chat, avatar, Discovery search/tags/trending, Social/Economy/Trust & Safety are all
+explicitly out of scope.
+
+## Verified backend contract (as of this writing)
+- `POST /api/auth/register` — JSON body `{username, email, password, date_of_birth}`.
+  `date_of_birth` is a `YYYY-MM-DD` string. Returns `201 {access_token, token_type}`.
+  Rejects under-18 with `400`.
+- `POST /api/auth/login` — OAuth2 **form-encoded** (`application/x-www-form-urlencoded`)
+  `username` + `password` (this is NOT a JSON endpoint). Returns `{access_token, token_type}`.
+- `GET /api/worlds` — **requires auth** (`CurrentUser`), returns a JSON array of
+  `{id, name, description, visibility, owner_id, created_at}`. There is no unauthenticated
+  public-worlds path, so the worlds list screen can only be shown after login/register.
+- `GET /api/health` — unauthenticated, `{status, app}`.
+- Base URL: uvicorn default `http://127.0.0.1:8000` (must be configurable in the client).
+- CORS is irrelevant to the native Godot `HTTPRequest` client (no browser origin).
+
+## Task breakdown
+| # | Type | Task | Depends on |
+|---|------|------|-----------|
+| 1 | architecture | `ApiClient` autoload: HTTP + JWT storage + error contract | — |
+| 2 | implementation | Main-menu **login** wiring (form-encoded) | 1 |
+| 3 | implementation | Main-menu **register** wiring (JSON + age gate) | 2 |
+| 4 | implementation | **World list** screen consuming `GET /api/worlds` | 2 |
+| 5 | testing | End-to-end headless smoke test + manual verify | 1,3,4 |
+
+## Design decisions captured (resolved in task 1)
+- Token storage: in-memory singleton property for the MVP; a `save_to_disk` seam is left
+  open but not required yet (no re-login on restart in this slice).
+- Error contract: every call returns a discriminated result (`ok`/`error`) so callers
+  never crash on network failure; non-2xx surfaces `{status, detail}` from the backend.
+- Base URL: read from a ProjectSetting, defaulting to `http://127.0.0.1:8000`.
+- Login is form-encoded; register is JSON — the client helper must support both content types.