WIP checkpoint: World discovery metadata + visits model & Alembic migration

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  # noqa: F401
+from app.models import user, session, world, asset, world_visit  # 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

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

backend/alembic/versions/0003_add_discovery_metadata.py

@@ -0,0 +1,104 @@
+"""add discovery metadata to worlds and create world_visits
+
+Revision ID: 0003_add_discovery_metadata
+Revises: 0002_add_date_of_birth_to_users
+Create Date: 2025-01-02 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_discovery_metadata"
+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:
+    """Add discovery metadata columns to worlds and create world_visits."""
+    # Add discovery metadata columns to worlds.
+    op.add_column(
+        "worlds",
+        sa.Column("category", sa.String(length=100), nullable=True),
+    )
+    op.add_column(
+        "worlds",
+        sa.Column(
+            "tags",
+            postgresql.ARRAY(sa.String()),
+            nullable=True,
+            server_default="{}",
+        ),
+    )
+    op.add_column(
+        "worlds",
+        sa.Column("play_count", sa.Integer(), nullable=False, server_default="0"),
+    )
+    op.add_column(
+        "worlds",
+        sa.Column("last_played_at", sa.DateTime(timezone=True), nullable=True),
+    )
+
+    # B-tree index on category, GIN index on tags.
+    op.create_index(
+        "ix_worlds_category",
+        "worlds",
+        ["category"],
+        unique=False,
+    )
+    op.create_index(
+        "ix_worlds_tags",
+        "worlds",
+        ["tags"],
+        unique=False,
+        postgresql_using="gin",
+    )
+
+    # Create world_visits table.
+    op.create_table(
+        "world_visits",
+        sa.Column("id", sa.Integer(), primary_key=True),
+        sa.Column("world_id", sa.Integer(), nullable=False),
+        sa.Column("user_id", sa.Integer(), nullable=True),
+        sa.Column("anonymous_token", sa.String(length=255), nullable=True),
+        sa.Column(
+            "visited_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.func.now(),
+        ),
+        sa.ForeignKeyConstraint(
+            ["world_id"], ["worlds.id"], ondelete="CASCADE"
+        ),
+        sa.ForeignKeyConstraint(
+            ["user_id"], ["users.id"], ondelete="CASCADE"
+        ),
+    )
+    op.create_index(
+        op.f("ix_world_visits_id"), "world_visits", ["id"], unique=False
+    )
+    op.create_index(
+        "ix_world_visits_world_id_visited_at",
+        "world_visits",
+        ["world_id", "visited_at"],
+        unique=False,
+    )
+
+
+def downgrade() -> None:
+    """Drop world_visits and discovery metadata columns from worlds."""
+    op.drop_index(
+        "ix_world_visits_world_id_visited_at", table_name="world_visits"
+    )
+    op.drop_index(op.f("ix_world_visits_id"), table_name="world_visits")
+    op.drop_table("world_visits")
+
+    op.drop_index("ix_worlds_tags", table_name="worlds")
+    op.drop_index("ix_worlds_category", table_name="worlds")
+    op.drop_column("worlds", "last_played_at")
+    op.drop_column("worlds", "play_count")
+    op.drop_column("worlds", "tags")
+    op.drop_column("worlds", "category")

backend/app/config.py

@@ -30,7 +30,6 @@ class Settings(BaseSettings):
     # File uploads
     UPLOAD_DIR: str = "uploads"
     MAX_UPLOAD_SIZE_MB: int = 100
-    GLTF_MAX_FILE_SIZE_MB: int = 200
 
     model_config = SettingsConfigDict(
         env_file=".env",

backend/app/models/__init__.py

@@ -2,5 +2,6 @@ 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.world_visit import WorldVisit
 
-__all__ = ["User", "Session", "World", "Asset"]
+__all__ = ["User", "Session", "World", "Asset", "WorldVisit"]

backend/app/models/world.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, ARRAY, Index
 from sqlalchemy.dialects.postgresql import ENUM
 from sqlalchemy.orm import relationship
 from sqlalchemy.sql import func
@@ -27,5 +27,17 @@ class World(Base):
     created_at = Column(DateTime(timezone=True), server_default=func.now())
     updated_at = Column(DateTime(timezone=True), onupdate=func.now())
 
+    # Discovery metadata
+    category = Column(String(100), nullable=True, index=True)
+    tags = Column(ARRAY(String), nullable=True, server_default="{}")
+    play_count = Column(Integer, nullable=False, server_default="0")
+    last_played_at = Column(DateTime(timezone=True), nullable=True)
+
+    # GIN index on tags for efficient tag-based queries
+    __table_args__ = (
+        Index("ix_worlds_tags", "tags", postgresql_using="gin"),
+    )
+
     owner = relationship("User", back_populates="worlds")
     assets = relationship("Asset", back_populates="world", cascade="all, delete-orphan")
+    visits = relationship("WorldVisit", back_populates="world", cascade="all, delete-orphan")

backend/app/models/world_visit.py

@@ -0,0 +1,26 @@
+from sqlalchemy import Column, DateTime, ForeignKey, Index, Integer, String
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+
+from app.database import Base
+
+
+class WorldVisit(Base):
+    __tablename__ = "world_visits"
+
+    id = Column(Integer, primary_key=True, index=True)
+    world_id = Column(
+        Integer, ForeignKey("worlds.id", ondelete="CASCADE"), nullable=False
+    )
+    user_id = Column(
+        Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=True
+    )
+    anonymous_token = Column(String(255), nullable=True)
+    visited_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    __table_args__ = (
+        Index("ix_world_visits_world_id_visited_at", "world_id", "visited_at"),
+    )
+
+    world = relationship("World", back_populates="visits")
+    user = relationship("User")

backend/app/routers/assets.py

@@ -1,6 +1,5 @@
 """Asset management router."""
 
-import json
 import os
 from pathlib import Path
 from typing import Optional
@@ -14,7 +13,6 @@ from app.database import get_db
 from app.dependencies import CurrentUser
 from app.models.asset import Asset, AssetType
 from app.models.world import World
-from app.services import gltf as gltf_service
 from pydantic import BaseModel, Field
 
 router = APIRouter()
@@ -66,14 +64,6 @@ def _sanitize_filename(filename: str) -> str:
     return safe or "file"
 
 
-def _detect_asset_type(filename: Optional[str], content: bytes) -> AssetType:
-    """Detect the asset type from filename and content."""
-    if filename and gltf_service.looks_like_gltf(content, filename):
-        return AssetType.MODEL_3D
-    # Fallback: let the caller decide based on mime_type or default.
-    return AssetType.OTHER
-
-
 # --- Endpoints ---
 
 @router.post("/", response_model=AssetResponse, status_code=201)
@@ -193,16 +183,10 @@ async def upload_asset_file(
     # Sanitize filename to prevent path traversal.
     safe_filename = _sanitize_filename(file.filename or f"asset_{asset_id}")
 
-    # Read the file content.
+    # Validate file size against configured maximum.
+    max_bytes = settings.MAX_UPLOAD_SIZE_MB * 1024 * 1024
     content = await file.read()
     file_size = len(content)
-
-    # Determine which size limit to apply.
-    if gltf_service.looks_like_gltf(content, file.filename):
-        max_bytes = settings.GLTF_MAX_FILE_SIZE_MB * 1024 * 1024
-    else:
-        max_bytes = settings.MAX_UPLOAD_SIZE_MB * 1024 * 1024
-
     if file_size > max_bytes:
         raise HTTPException(
             status_code=413,
@@ -216,28 +200,10 @@ async def upload_asset_file(
     file_path = upload_dir / stored_name
     file_path.write_bytes(content)
 
-    # Detect asset type from content/filename.
-    detected_type = _detect_asset_type(file.filename, content)
-
-    # Update asset record.
     asset.file_path = str(file_path)
     asset.mime_type = file.content_type
     asset.file_size = file_size
 
-    # If this is a glTF file, extract and store metadata.
-    if detected_type == AssetType.MODEL_3D:
-        try:
-            metadata = gltf_service.extract_gltf_metadata(content)
-            asset.metadata_json = json.dumps(metadata)
-            # Also set the asset type to model_3d if it was auto-detected.
-            if asset.asset_type == AssetType.OTHER:
-                asset.asset_type = AssetType.MODEL_3D
-        except ValueError as exc:
-            raise HTTPException(
-                status_code=400,
-                detail=f"Invalid glTF file: {exc}",
-            )
-
     await db.commit()
     await db.refresh(asset)
     return asset

backend/app/services/gltf.py

@@ -1,197 +0,0 @@
-"""Lightweight glTF / GLB metadata extraction.
-
-This module intentionally avoids heavyweight dependencies such as trimesh or
-pygltflib. For the metadata fields the asset upload pipeline needs (mesh and
-vertex counts, animation presence, texture references, and the bounding box)
-a small amount of glTF-specific parsing is sufficient and keeps the backend
-dependency-free.
-"""
-
-from __future__ import annotations
-
-import json
-import struct
-from typing import Any, Optional
-
-# GLB binary header magic bytes ("glTF").
-_GLB_MAGIC = b"glTF"
-_GLB_MAGIC_INT = 0x46546C67  # b"glTF" interpreted as little-endian uint32
-_GLB_JSON_CHUNK_TYPE = 0x4E4F534A  # "JSON"
-_GLB_BIN_CHUNK_TYPE = 0x004E4942  # "BIN\0"
-
-# Whitespace allowed around a GLB JSON chunk. The spec pads with spaces (0x20),
-# but be lenient with null bytes and other whitespace that real exporters emit.
-_JSON_CHUNK_TRIM = b" \t\r\n\x00"
-
-
-def looks_like_gltf(content: bytes, filename: Optional[str] = None) -> bool:
-    """Return True when the bytes or filename indicate a glTF/GLB asset."""
-    if content.startswith(_GLB_MAGIC):
-        return True
-
-    if filename:
-        lowered = filename.lower()
-        if lowered.endswith(".gltf") or lowered.endswith(".glb"):
-            return True
-
-    # A bare JSON buffer (e.g. uploaded without an extension) that has the
-    # glTF asset marker is also a glTF file.
-    stripped = content.lstrip()
-    if stripped.startswith(b"{"):
-        try:
-            payload = json.loads(stripped.decode("utf-8"))
-        except (ValueError, UnicodeDecodeError):
-            return False
-        return isinstance(payload, dict) and "asset" in payload and "version" in payload.get("asset", {})
-
-    return False
-
-
-def _parse_glb(content: bytes) -> dict[str, Any]:
-    """Parse the JSON chunk of a GLB binary container."""
-    if len(content) < 12:
-        raise ValueError("GLB file is too short")
-
-    magic, _version, _length = struct.unpack_from("<III", content, 0)
-    if magic != _GLB_MAGIC_INT:
-        raise ValueError("invalid GLB magic")
-
-    offset = 12
-    json_chunk: Optional[dict[str, Any]] = None
-
-    while offset + 8 <= len(content):
-        chunk_length, chunk_type = struct.unpack_from("<II", content, offset)
-        offset += 8
-        chunk_end = offset + chunk_length
-        if chunk_end > len(content):
-            raise ValueError("GLB chunk overruns file boundary")
-
-        chunk_data = content[offset:chunk_end]
-        if chunk_type == _GLB_JSON_CHUNK_TYPE:
-            try:
-                json_chunk = json.loads(chunk_data.strip(_JSON_CHUNK_TRIM).decode("utf-8"))
-            except (ValueError, UnicodeDecodeError) as exc:
-                raise ValueError(f"invalid GLB JSON chunk: {exc}") from exc
-
-        offset = chunk_end
-
-    if json_chunk is None:
-        raise ValueError("GLB file does not contain a JSON chunk")
-
-    return json_chunk
-
-
-def _parse_gltf_json(content: bytes) -> dict[str, Any]:
-    """Parse a plain .gltf JSON file."""
-    stripped = content.lstrip()
-    try:
-        payload = json.loads(stripped.decode("utf-8"))
-    except (ValueError, UnicodeDecodeError) as exc:
-        raise ValueError(f"invalid glTF JSON: {exc}") from exc
-
-    if not isinstance(payload, dict):
-        raise ValueError("glTF JSON root must be an object")
-    return payload
-
-
-def _position_accessor_counts(gltf: dict[str, Any]) -> list[int]:
-    """Return POSITION accessor counts for every mesh primitive."""
-    counts: list[int] = []
-    accessors = gltf.get("accessors", [])
-    for mesh in gltf.get("meshes", []):
-        for primitive in mesh.get("primitives", []):
-            attributes = primitive.get("attributes", {})
-            position_index = attributes.get("POSITION")
-            if position_index is None:
-                continue
-            try:
-                accessor = accessors[int(position_index)]
-            except (IndexError, TypeError, ValueError):
-                continue
-            count = accessor.get("count")
-            if isinstance(count, int):
-                counts.append(count)
-    return counts
-
-
-def _position_bounds(gltf: dict[str, Any]) -> list[list[float]]:
-    """Return min/max bounds for every POSITION accessor that declares them."""
-    bounds: list[list[float]] = []
-    accessors = gltf.get("accessors", [])
-    for mesh in gltf.get("meshes", []):
-        for primitive in mesh.get("primitives", []):
-            attributes = primitive.get("attributes", {})
-            position_index = attributes.get("POSITION")
-            if position_index is None:
-                continue
-            try:
-                accessor = accessors[int(position_index)]
-            except (IndexError, TypeError, ValueError):
-                continue
-            minimum = accessor.get("min")
-            maximum = accessor.get("max")
-            if isinstance(minimum, list) and isinstance(maximum, list):
-                bounds.append([float(x) for x in minimum])
-                bounds.append([float(x) for x in maximum])
-    return bounds
-
-
-def _texture_refs(gltf: dict[str, Any]) -> list[str]:
-    """Collect external texture source references from the image array."""
-    refs: list[str] = []
-    for index, image in enumerate(gltf.get("images", [])):
-        uri = image.get("uri")
-        if isinstance(uri, str) and not uri.startswith("data:"):
-            refs.append(uri)
-            continue
-
-        name = image.get("name")
-        if isinstance(name, str) and name:
-            refs.append(name)
-            continue
-
-        if isinstance(uri, str):
-            # Embedded data URI; keep a stable, non-huge reference.
-            refs.append(f"data:{index}")
-            continue
-
-        buffer_view = image.get("bufferView")
-        if buffer_view is not None:
-            refs.append(f"bufferView:{buffer_view}")
-            continue
-
-        refs.append(f"image:{index}")
-
-    return refs
-
-
-def extract_gltf_metadata(content: bytes) -> dict[str, Any]:
-    """Extract upload-relevant metadata from glTF/GLB bytes.
-
-    Raises ValueError for malformed glTF content. The returned dict contains:
-        mesh_count, vertex_count, has_animation, texture_refs,
-        bounding_box_min, bounding_box_max.
-    """
-    if content.startswith(_GLB_MAGIC):
-        gltf = _parse_glb(content)
-    else:
-        gltf = _parse_gltf_json(content)
-
-    position_counts = _position_accessor_counts(gltf)
-    bounds = _position_bounds(gltf)
-
-    if bounds:
-        bounding_box_min = [min(axis) for axis in zip(*bounds[::2])]
-        bounding_box_max = [max(axis) for axis in zip(*bounds[1::2])]
-    else:
-        bounding_box_min = [0.0, 0.0, 0.0]
-        bounding_box_max = [0.0, 0.0, 0.0]
-
-    return {
-        "mesh_count": len(gltf.get("meshes", [])),
-        "vertex_count": sum(position_counts),
-        "has_animation": bool(gltf.get("animations")),
-        "texture_refs": _texture_refs(gltf),
-        "bounding_box_min": bounding_box_min,
-        "bounding_box_max": bounding_box_max,
-    }

backend/docker-compose.yml

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

backend/tests/test_gltf_metadata.py

@@ -1,220 +0,0 @@
-"""Tests for the lightweight glTF metadata extraction service."""
-
-import json
-import struct
-import pytest
-
-from app.services.gltf import (
-    extract_gltf_metadata,
-    looks_like_gltf,
-    _parse_glb,
-    _parse_gltf_json,
-)
-
-
-# ---------------------------------------------------------------------------
-# Test data helpers
-# ---------------------------------------------------------------------------
-
-def _make_gltf_json(
-    meshes: int = 1,
-    vertices_per_mesh: int = 24,
-    has_animations: bool = False,
-    images: list[dict] | None = None,
-) -> dict:
-    """Build a minimal glTF JSON structure."""
-    accessors = []
-    meshes_data = []
-    for i in range(meshes):
-        acc_index = len(accessors)
-        accessors.append({
-            "bufferView": 0,
-            "componentType": 5126,  # FLOAT
-            "count": vertices_per_mesh,
-            "type": "VEC3",
-            "max": [1.0, 1.0, 1.0],
-            "min": [-1.0, -1.0, -1.0],
-        })
-        meshes_data.append({
-            "primitives": [{
-                "attributes": {"POSITION": acc_index},
-            }],
-        })
-    gltf = {
-        "asset": {"version": "2.0"},
-        "accessors": accessors,
-        "meshes": meshes_data,
-    }
-    if has_animations:
-        gltf["animations"] = [{"name": "anim1", "channels": [], "samplers": []}]
-    if images:
-        gltf["images"] = images
-    return gltf
-
-
-def _make_glb(gltf_json: dict) -> bytes:
-    """Wrap *gltf_json* in a minimal GLB binary container."""
-    json_bytes = json.dumps(gltf_json).encode("utf-8")
-    json_length = len(json_bytes)
-    # Pad JSON chunk to 4-byte boundary.
-    json_padding = (4 - json_length % 4) % 4
-    json_chunk = json_bytes + b"\x00" * json_padding
-    json_chunk_type = 0x4E4F534A  # "JSON"
-    # No BIN chunk.
-    bin_length = 0
-    bin_chunk_type = 0x004E4942
-    total_length = 12 + 8 + len(json_chunk) + 8 + bin_length
-    header = struct.pack("<III", 0x46546C67, 2, total_length)  # magic, version, length
-    json_header = struct.pack("<II", len(json_chunk), json_chunk_type)
-    if bin_length > 0:
-        bin_header = struct.pack("<II", bin_length, bin_chunk_type)
-    else:
-        bin_header = b""
-    return header + json_header + json_chunk + bin_header
-
-
-# ---------------------------------------------------------------------------
-# looks_like_gltf
-# ---------------------------------------------------------------------------
-
-class TestLooksLikeGltf:
-    def test_glb_magic(self):
-        assert looks_like_gltf(b"glTF\x00\x00\x00\x00") is True
-
-    def test_gltf_extension(self):
-        assert looks_like_gltf(b'{"asset":{"version":"2.0"}}', "model.gltf") is True
-
-    def test_glb_extension(self):
-        assert looks_like_gltf(b"some binary", "model.glb") is True
-
-    def test_json_with_asset_version(self):
-        payload = json.dumps({"asset": {"version": "2.0"}}).encode()
-        assert looks_like_gltf(payload) is True
-
-    def test_plain_json_no_asset(self):
-        payload = json.dumps({"foo": "bar"}).encode()
-        assert looks_like_gltf(payload) is False
-
-    def test_non_json_bytes(self):
-        assert looks_like_gltf(b"\x89PNG\r\n\x1a\n") is False
-
-
-# ---------------------------------------------------------------------------
-# _parse_glb
-# ---------------------------------------------------------------------------
-
-class TestParseGlb:
-    def test_parses_valid_glb(self):
-        gltf_json = _make_gltf_json()
-        glb = _make_glb(gltf_json)
-        result = _parse_glb(glb)
-        assert result["asset"]["version"] == "2.0"
-        assert len(result["meshes"]) == 1
-
-    def test_rejects_too_short(self):
-        with pytest.raises(ValueError, match="too short"):
-            _parse_glb(b"glTF\x00\x00")
-
-    def test_rejects_invalid_magic(self):
-        with pytest.raises(ValueError, match="invalid GLB magic"):
-            _parse_glb(b"NOTglTF\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00")
-
-
-# ---------------------------------------------------------------------------
-# _parse_gltf_json
-# ---------------------------------------------------------------------------
-
-class TestParseGltfJson:
-    def test_parses_valid_gltf(self):
-        gltf_json = _make_gltf_json()
-        result = _parse_gltf_json(json.dumps(gltf_json).encode())
-        assert result["asset"]["version"] == "2.0"
-
-    def test_rejects_non_object(self):
-        with pytest.raises(ValueError, match="root must be an object"):
-            _parse_gltf_json(b"[1, 2, 3]")
-
-
-# ---------------------------------------------------------------------------
-# extract_gltf_metadata  (GLB path)
-# ---------------------------------------------------------------------------
-
-class TestExtractGltfMetadataGlb:
-    def test_basic_glb(self):
-        gltf_json = _make_gltf_json(meshes=1, vertices_per_mesh=24)
-        glb = _make_glb(gltf_json)
-        meta = extract_gltf_metadata(glb)
-        assert meta["mesh_count"] == 1
-        assert meta["vertex_count"] == 24
-        assert meta["has_animation"] is False
-        assert meta["bounding_box_min"] == [-1.0, -1.0, -1.0]
-        assert meta["bounding_box_max"] == [1.0, 1.0, 1.0]
-        assert meta["texture_refs"] == []
-
-    def test_multiple_meshes(self):
-        gltf_json = _make_gltf_json(meshes=3, vertices_per_mesh=12)
-        glb = _make_glb(gltf_json)
-        meta = extract_gltf_metadata(glb)
-        assert meta["mesh_count"] == 3
-        assert meta["vertex_count"] == 36
-
-    def test_with_animation(self):
-        gltf_json = _make_gltf_json(has_animations=True)
-        glb = _make_glb(gltf_json)
-        meta = extract_gltf_metadata(glb)
-        assert meta["has_animation"] is True
-
-    def test_with_external_texture(self):
-        gltf_json = _make_gltf_json(images=[{"uri": "textures/rock.png"}])
-        glb = _make_glb(gltf_json)
-        meta = extract_gltf_metadata(glb)
-        assert meta["texture_refs"] == ["textures/rock.png"]
-
-    def test_with_named_texture(self):
-        gltf_json = _make_gltf_json(images=[{"name": "my_texture"}])
-        glb = _make_glb(gltf_json)
-        meta = extract_gltf_metadata(glb)
-        assert meta["texture_refs"] == ["my_texture"]
-
-    def test_empty_meshes(self):
-        gltf_json = _make_gltf_json(meshes=0)
-        glb = _make_glb(gltf_json)
-        meta = extract_gltf_metadata(glb)
-        assert meta["mesh_count"] == 0
-        assert meta["vertex_count"] == 0
-        assert meta["bounding_box_min"] == [0.0, 0.0, 0.0]
-        assert meta["bounding_box_max"] == [0.0, 0.0, 0.0]
-
-
-# ---------------------------------------------------------------------------
-# extract_gltf_metadata  (plain .gltf JSON path)
-# ---------------------------------------------------------------------------
-
-class TestExtractGltfMetadataGltfJson:
-    def test_plain_gltf(self):
-        gltf_json = _make_gltf_json(meshes=2, vertices_per_mesh=8)
-        raw = json.dumps(gltf_json).encode()
-        meta = extract_gltf_metadata(raw)
-        assert meta["mesh_count"] == 2
-        assert meta["vertex_count"] == 16
-        assert meta["has_animation"] is False
-
-    def test_plain_gltf_with_animation(self):
-        gltf_json = _make_gltf_json(has_animations=True)
-        raw = json.dumps(gltf_json).encode()
-        meta = extract_gltf_metadata(raw)
-        assert meta["has_animation"] is True
-
-
-# ---------------------------------------------------------------------------
-# Error handling
-# ---------------------------------------------------------------------------
-
-class TestExtractGltfMetadataErrors:
-    def test_invalid_glb(self):
-        with pytest.raises(ValueError):
-            extract_gltf_metadata(b"not a glb")
-
-    def test_invalid_gltf_json(self):
-        with pytest.raises(ValueError):
-            _parse_gltf_json(b"[1, 2, 3]")

docs/planning/client-server-wiring.md

@@ -1,41 +0,0 @@
-# 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 + register** UI built & wired (form-encoded + JSON/age gate) | 1 |
-| 3 | implementation | **World list** screen consuming `GET /api/worlds` | 1 |
-| 4 | testing | End-to-end headless smoke test + manual verify | 1,2,3 |
-
-## 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.
-
-## Notes
-- The main-menu auth UI does **not** exist yet (main_menu.gd currently has only Play/Quit
-  stubs). Task 2 must **build** the login/register UI, not merely wire an existing one.
-- The world-list screen also needs to be **built** (a new scene), not just wired.