Land CSOC-WP-0006 PageOps: member space/page CRUD, copy, transfer

Thin CONTENT_ROOT content plane (ADR-0003/0004) with space visual field,
product UI for Title/Abstract/Visual, page list sidebar, and tests. Update
capability model and smoke checklist; mark WP-0006 finished.

coulomb_social/apps/spaces/services.py

@@ -1,11 +1,13 @@
-"""Space queries scoped by tenant membership."""
+"""Space queries and PageOps-backed mutations (ADR-0003 / ADR-0004)."""
 
 from __future__ import annotations
 
+from django.db import transaction
 from django.db.models import Q, QuerySet
 
 from coulomb_social.apps.members.models import Member
 
+from . import pageops
 from .models import Space, SpaceMembership
 
 
@@ -37,3 +39,159 @@ def get_space_for_member(member: Member | None, slug: str) -> Space | None:
     if member is None:
         return None
     return spaces_for_member(member).filter(slug=slug).first()
+
+
+@transaction.atomic
+def create_space(
+    member: Member,
+    *,
+    title: str,
+    abstractor: str = "",
+    slug: str | None = None,
+    visual: str = "",
+) -> Space:
+    title = (title or "").strip()
+    if not title:
+        raise pageops.PageOpsError("Title is required")
+    space_slug = pageops.normalize_slug(slug or Space.suggest_slug(title))
+    if Space.objects.filter(tenant_id=member.tenant_id, slug=space_slug).exists():
+        raise pageops.PageOpsError("A space with this slug already exists")
+
+    space = Space.objects.create(
+        tenant_id=member.tenant_id,
+        slug=space_slug,
+        title=title,
+        description=abstractor or "",
+        visual=visual or "",
+        created_by=member,
+        content_root="pages",
+        default_branch="main",
+    )
+    SpaceMembership.objects.get_or_create(
+        space=space,
+        member=member,
+        defaults={"role": SpaceMembership.Role.OWNER},
+    )
+    pageops.init_space_content(
+        space_slug,
+        title=title,
+        abstractor=abstractor or "",
+        visual=visual or "",
+    )
+    return space
+
+
+@transaction.atomic
+def update_space(
+    member: Member,
+    space: Space,
+    *,
+    title: str | None = None,
+    abstractor: str | None = None,
+    visual: str | None = None,
+) -> Space:
+    if get_space_for_member(member, space.slug) is None:
+        raise pageops.PageOpsError("Space not found")
+    if title is not None:
+        space.title = title.strip() or space.title
+    if abstractor is not None:
+        space.description = abstractor
+    if visual is not None:
+        space.visual = visual
+    space.save()
+    # Keep index.md in sync
+    index = pageops.read_page(space.slug, "index")
+    body = index.body if index.exists else f"# {space.title}\n"
+    pageops.write_page(
+        space.slug,
+        "index",
+        title=space.title,
+        abstractor=space.description,
+        visual=space.visual,
+        body=body,
+        extra_meta={"bubble_type": "space"},
+    )
+    return space
+
+
+@transaction.atomic
+def archive_space(member: Member, space: Space) -> Space:
+    if get_space_for_member(member, space.slug) is None:
+        raise pageops.PageOpsError("Space not found")
+    space.is_active = False
+    space.save(update_fields=["is_active", "updated_at"])
+    try:
+        pageops.archive_space_tree(space.slug)
+    except Exception:
+        # Tree archive is best-effort
+        pass
+    return space
+
+
+def list_space_pages(space: Space) -> list[pageops.PageDoc]:
+    return pageops.list_pages(space.slug)
+
+
+def put_space_page(
+    member: Member,
+    space: Space,
+    page_slug: str,
+    *,
+    title: str,
+    abstractor: str = "",
+    visual: str = "",
+    body: str = "",
+) -> pageops.PageDoc:
+    if get_space_for_member(member, space.slug) is None:
+        raise pageops.PageOpsError("Space not found")
+    return pageops.write_page(
+        space.slug,
+        page_slug,
+        title=title,
+        abstractor=abstractor,
+        visual=visual,
+        body=body,
+    )
+
+
+def copy_space_page(
+    member: Member,
+    space: Space,
+    page_slug: str,
+    *,
+    dest_slug: str,
+    dest_space: Space | None = None,
+    title: str | None = None,
+) -> pageops.PageDoc:
+    if get_space_for_member(member, space.slug) is None:
+        raise pageops.PageOpsError("Source space not found")
+    target = dest_space or space
+    if get_space_for_member(member, target.slug) is None:
+        raise pageops.PageOpsError("Destination space not found")
+    return pageops.copy_page(
+        space.slug,
+        page_slug,
+        target.slug,
+        dest_slug,
+        title=title,
+    )
+
+
+def transfer_space_page(
+    member: Member,
+    space: Space,
+    page_slug: str,
+    dest_space: Space,
+    *,
+    dest_slug: str | None = None,
+) -> pageops.PageDoc:
+    if get_space_for_member(member, space.slug) is None:
+        raise pageops.PageOpsError("Source space not found")
+    if get_space_for_member(member, dest_space.slug) is None:
+        raise pageops.PageOpsError("Destination space not found")
+    return pageops.transfer_page(
+        space.slug,
+        page_slug,
+        dest_space.slug,
+        dest_slug,
+    )