feat(UI-Overhaul-Phase6): Tags Umstrukturierung

Migration 0138: Add parent_id, applicable_to, icon columns to tags table

Backend:
- Tag model: add parent_id (self-FK), applicable_to (JSONB), icon (VARCHAR)
- TagCreate/TagUpdate/TagResponse schemas: add new fields
- Tags routes: create_tag, update_tag, list_tags return new fields

Frontend:
- api/tags.ts: Tag interface, CreateTagPayload, UpdateTagPayload updated with new fields
- Tags route moved from /tags to /settings/tags (under Settings)
- Tags.tsx: TagFormModal updated with parent tag selector, icon picker, applicable_to multi-select
- TagsPage passes tags list to TagFormModal for parent selection

tsc clean, backend import OK

app/plugins/builtins/tags/models.py

@@ -5,7 +5,7 @@ from __future__ import annotations
 import uuid
 
 from sqlalchemy import ForeignKey, Index, String, UniqueConstraint
-from sqlalchemy.dialects.postgresql import UUID as PGUUID
+from sqlalchemy.dialects.postgresql import UUID as PGUUID, JSONB
 from sqlalchemy.orm import Mapped, mapped_column
 
 from app.core.db import Base, TenantMixin
@@ -24,6 +24,7 @@ class Tag(Base, TenantMixin, OwnedMixin):
     __table_args__ = (
         UniqueConstraint("tenant_id", "name", name="uq_tags_tenant_name"),
         Index("ix_tags_tenant", "tenant_id"),
+        Index("ix_tags_parent", "parent_id"),
     )
 
     id: Mapped[uuid.UUID] = mapped_column(
@@ -31,6 +32,11 @@ class Tag(Base, TenantMixin, OwnedMixin):
     )
     name: Mapped[str] = mapped_column(String(100), nullable=False)
     color: Mapped[str] = mapped_column(String(7), nullable=False, default="#6B7280")
+    parent_id: Mapped[uuid.UUID | None] = mapped_column(
+        PGUUID(as_uuid=True), ForeignKey("tags.id", ondelete="SET NULL"), nullable=True
+    )
+    applicable_to: Mapped[list[str] | None] = mapped_column(JSONB, nullable=True)
+    icon: Mapped[str | None] = mapped_column(String(50), nullable=True)
 
 
 class TagAssignment(Base, TenantMixin, OwnedMixin):

app/plugins/builtins/tags/routes.py

@@ -78,6 +78,9 @@ async def list_tags(
             "name": tag.name,
             "color": tag.color,
             "entity_count": count,
+            "parent_id": str(tag.parent_id) if tag.parent_id else None,
+            "applicable_to": tag.applicable_to,
+            "icon": tag.icon,
         }
         for tag, count in rows
     ]
@@ -102,7 +105,15 @@ async def create_tag(
 
     from app.core.hooks import do_action
     await do_action("tag.before_create", body, db=db, tenant_id=tenant_id, user_id=user_id)
-    tag = Tag(tenant_id=tenant_id, name=body.name, color=body.color, owner_id=user_id)
+    tag = Tag(
+        tenant_id=tenant_id,
+        name=body.name,
+        color=body.color,
+        owner_id=user_id,
+        parent_id=uuid.UUID(body.parent_id) if body.parent_id else None,
+        applicable_to=body.applicable_to,
+        icon=body.icon,
+    )
     db.add(tag)
     await db.flush()
     from app.core.hooks import do_action
@@ -112,6 +123,9 @@ async def create_tag(
         "name": tag.name,
         "color": tag.color,
         "entity_count": 0,
+        "parent_id": str(tag.parent_id) if tag.parent_id else None,
+        "applicable_to": tag.applicable_to,
+        "icon": tag.icon,
     }
 
 
@@ -145,6 +159,12 @@ async def update_tag(
         tag.name = data["name"]
     if "color" in data:
         tag.color = data["color"]
+    if "parent_id" in data:
+        tag.parent_id = uuid.UUID(data["parent_id"]) if data["parent_id"] else None
+    if "applicable_to" in data:
+        tag.applicable_to = data["applicable_to"]
+    if "icon" in data:
+        tag.icon = data["icon"]
 
     await db.flush()
     return {
@@ -152,6 +172,9 @@ async def update_tag(
         "name": tag.name,
         "color": tag.color,
         "entity_count": 0,
+        "parent_id": str(tag.parent_id) if tag.parent_id else None,
+        "applicable_to": tag.applicable_to,
+        "icon": tag.icon,
     }
 
 

app/plugins/builtins/tags/schemas.py

@@ -8,11 +8,17 @@ from pydantic import BaseModel, Field
 class TagCreate(BaseModel):
     name: str = Field(..., min_length=1, max_length=100)
     color: str = Field("#6B7280", max_length=7)
+    parent_id: str | None = None
+    applicable_to: list[str] | None = None
+    icon: str | None = None
 
 
 class TagUpdate(BaseModel):
     name: str | None = Field(None, min_length=1, max_length=100)
     color: str | None = Field(None, max_length=7)
+    parent_id: str | None = None
+    applicable_to: list[str] | None = None
+    icon: str | None = None
 
 
 class TagResponse(BaseModel):
@@ -20,6 +26,9 @@ class TagResponse(BaseModel):
     name: str
     color: str
     entity_count: int = 0
+    parent_id: str | None = None
+    applicable_to: list[str] | None = None
+    icon: str | None = None
 
 
 class TagAssignRequest(BaseModel):