feat: Groups refinement and band theming

- Group model: Add vertical_id scoping, image_url
- Vertical model: Add logo_url, accent_color for branding
- Groups router: Add vertical filter, member count, leave endpoint
- Fix CI/CD deploy.yml git clone URL (runfoo-org)

.forgejo/workflows/deploy.yml

@@ -36,7 +36,7 @@ jobs:
           script: |
             # Clone or pull repo
             if [ ! -d "${{ steps.target.outputs.deploy_path }}" ]; then
-              git clone https://git.runfoo.run/runfoo/fediversion.git ${{ steps.target.outputs.deploy_path }}
+              git clone https://git.runfoo.run/runfoo-org/fediversion.git ${{ steps.target.outputs.deploy_path }}
             fi
             cd ${{ steps.target.outputs.deploy_path }}
             git fetch origin ${{ github.ref_name }}

backend/models.py

@@ -88,6 +88,10 @@ class Vertical(SQLModel, table=True):
     is_active: bool = Field(default=True, description="Show in band selector")
     is_featured: bool = Field(default=False, description="Highlight in discovery")
     
+    # Branding
+    logo_url: Optional[str] = Field(default=None, description="Band logo URL for UI")
+    accent_color: Optional[str] = Field(default=None, description="Hex color for accents")
+    
     # Relationships
     shows: List["Show"] = Relationship(back_populates="vertical")
     songs: List["Song"] = Relationship(back_populates="vertical")
@@ -421,10 +425,14 @@ class Group(SQLModel, table=True):
     id: Optional[int] = Field(default=None, primary_key=True)
     name: str = Field(index=True, unique=True)
     description: Optional[str] = None
-    privacy: str = Field(default="public") # public, private
+    privacy: str = Field(default="public") # public, private, invite_only
     created_by: int = Field(foreign_key="user.id")
     created_at: datetime = Field(default_factory=datetime.utcnow)
     
+    # Vertical scoping (optional - null means cross-band group)
+    vertical_id: Optional[int] = Field(default=None, foreign_key="vertical.id", index=True)
+    image_url: Optional[str] = Field(default=None, description="Group logo/image URL")
+    
     members: List["GroupMember"] = Relationship(back_populates="group")
     posts: List["GroupPost"] = Relationship(back_populates="group")
 

backend/routers/groups.py

@@ -1,4 +1,4 @@
-from typing import List
+from typing import List, Optional
 from fastapi import APIRouter, Depends, HTTPException, Query
 from sqlmodel import Session, select, func
 from database import get_session
@@ -32,12 +32,33 @@ def create_group(
 @router.get("/", response_model=List[GroupRead])
 def read_groups(
     offset: int = 0, 
-    limit: int = Query(default=100, le=100), 
+    limit: int = Query(default=100, le=100),
+    vertical: Optional[str] = None,
     session: Session = Depends(get_session)
 ):
-    # TODO: Add member count to response
-    groups = session.exec(select(Group).offset(offset).limit(limit)).all()
-    return groups
+    from models import Vertical
+    
+    query = select(Group)
+    
+    # Filter by vertical if specified
+    if vertical:
+        v = session.exec(select(Vertical).where(Vertical.slug == vertical)).first()
+        if v:
+            query = query.where(Group.vertical_id == v.id)
+    
+    groups = session.exec(query.offset(offset).limit(limit)).all()
+    
+    # Add member count to each group
+    result = []
+    for g in groups:
+        member_count = session.exec(
+            select(func.count(GroupMember.id)).where(GroupMember.group_id == g.id)
+        ).one()
+        result.append({
+            **g.model_dump(),
+            "member_count": member_count or 0
+        })
+    return result
 
 @router.get("/{group_id}", response_model=GroupRead)
 def read_group(group_id: int, session: Session = Depends(get_session)):
@@ -83,6 +104,42 @@ def join_group(
     
     return {"status": "joined"}
 
+
+@router.delete("/{group_id}/leave")
+def leave_group(
+    group_id: int, 
+    session: Session = Depends(get_session), 
+    current_user: User = Depends(get_current_user)
+):
+    """Leave a group (non-admins only, admins must transfer ownership first)"""
+    member = session.exec(
+        select(GroupMember)
+        .where(GroupMember.group_id == group_id)
+        .where(GroupMember.user_id == current_user.id)
+    ).first()
+    
+    if not member:
+        raise HTTPException(status_code=404, detail="Not a member")
+    
+    if member.role == "admin":
+        # Check if only admin
+        other_admins = session.exec(
+            select(GroupMember)
+            .where(GroupMember.group_id == group_id)
+            .where(GroupMember.role == "admin")
+            .where(GroupMember.user_id != current_user.id)
+        ).first()
+        
+        if not other_admins:
+            raise HTTPException(
+                status_code=400, 
+                detail="Cannot leave: you are the only admin. Transfer ownership first."
+            )
+    
+    session.delete(member)
+    session.commit()
+    return {"status": "left"}
+
 # --- Posts ---
 
 @router.post("/{group_id}/posts", response_model=GroupPostRead)