brief sprint C1: relocate Post + Line from dashboard → billboard (no behavior change) — TDD

The Post/Line models always read more like billboard tenants than dashboard ones (1st-person personal vs. 2nd-person provenance feed); the upcoming Brief model needs them in the billboard namespace as the canonical surface they FK into. C1 is a pure relocation w. zero new behavior: 789 ITs + 20 sky/Post FTs green against the moved code.

- billboard.models adds Post (owner + shared_with) + Line (text + post FK), schema mirroring the legacy dashboard models 1:1; Post.get_absolute_url now reverses to `billboard:view_post`.
- billboard.forms adds LineForm + ExistingPostLineForm (moved from dashboard.forms; dashboard/forms.py removed).
- billboard.views absorbs new_post / view_post / share_post / my_posts (templates rendered from apps/billboard/post.html + my_posts.html).
- billboard.urls adds the namespaced routes: /billboard/new-post, /billboard/post/<uuid>/, /billboard/post/<uuid>/share-post, /billboard/users/<uuid>/. dashboard.urls drops the corresponding entries.
- _applet-my-posts + _applet-new-post URL refs now use the billboard: namespace; templates/apps/dashboard/{post,my_posts}.html removed.
- api/serializers + api/views + api/tests/integrated/test_views imports flip dashboard.models → billboard.models (PostSerializer / PostDetailAPI / PostLinesAPI / PostsAPI all retain identifiers — the model rename to Brief lands in C2).
- dashboard/tests/integrated/test_{models,views,forms} + dashboard/tests/unit/test_{models,forms} swap imports; test_views URL strings flip /dashboard/post/ → /billboard/post/, /dashboard/new_post → /billboard/new-post, /dashboard/users/ → /billboard/users/, share_post → share-post (path) / billboard:share_post (reverser). Tests stay in dashboard.tests/ for now — relocation TBD.
- functional_tests/my_posts_page.py URL string flips to /billboard/users/.
- Auto-generated migrations: billboard/0001_initial (CreateModel Post + Line), dashboard/0003_remove_post_* (drops legacy Post + Line), drama/0004_alter_gameevent_verb (incidental — choices field caught up).

This commit drops the dashboard Post/Line tables w/o data preservation; user has confirmed staging-side wipe is acceptable. C2 introduces the Brief model + read-tracking + slide-down banner unification. C3 hooks Note-unlock + share-post-invite + magic-link / invalid-link `messages` calls into the new Brief / banner pipeline.

Code architected by Disco DeDisco <discodedisco@outlook.com>
Git commit message Co-Authored-By:
Claude Sonnet 4.6 <noreply@anthropic.com>

src/apps/dashboard/views.py

@@ -16,8 +16,6 @@ from django.utils import timezone
 from django.views.decorators.csrf import ensure_csrf_cookie
 
 from apps.applets.utils import applet_context, apply_applet_toggle
-from apps.dashboard.forms import ExistingPostLineForm, LineForm
-from apps.dashboard.models import Line, Post
 from apps.drama.models import Note
 from apps.epic.utils import _compute_distinctions
 from apps.lyric.models import PaymentMethod, Token, User, Wallet
@@ -85,16 +83,6 @@ def _unlocked_palettes_for_user(user):
     return base
 
 
-def _recent_posts(user, limit=3):
-    return (
-        Post
-            .objects
-            .filter(Q(owner=user) | Q(shared_with=user))
-            .annotate(last_line=Max('lines__id'))
-            .order_by('-last_line')
-            .distinct()[:limit]
-    )
-
 def home_page(request):
     context = {
         "palettes": _palettes_for_user(request.user),
@@ -104,62 +92,10 @@ def home_page(request):
         context["applets"] = applet_context(request.user, "dashboard")
     return render(request, "apps/dashboard/home.html", context)
 
-def new_post(request):
-    form = LineForm(data=request.POST)
-    if form.is_valid():
-        nupost = Post.objects.create()
-        if request.user.is_authenticated:
-            nupost.owner = request.user
-            nupost.save()
-        form.save(for_post=nupost)
-        return redirect(nupost)
-    else:
-        context = {
-            "form": form,
-            "page_class": "page-billboard",
-        }
-        if request.user.is_authenticated:
-            context["applets"] = applet_context(request.user, "billboard")
-            context["recent_posts"] = _recent_posts(request.user)
-        return render(request, "apps/billboard/billboard.html", context)
 
-def view_post(request, post_id):
-    our_post = Post.objects.get(id=post_id)
+# Post / Line CRUD lives in apps.billboard.views since the Post + Line models
+# moved to apps.billboard.models.
 
-    if our_post.owner:
-        if not request.user.is_authenticated:
-            return redirect("/")
-        if request.user != our_post.owner and request.user not in our_post.shared_with.all():
-            return HttpResponseForbidden()
-
-    form = ExistingPostLineForm(for_post=our_post)
-
-    if request.method == "POST":
-        form = ExistingPostLineForm(for_post=our_post, data=request.POST)
-        if form.is_valid():
-            form.save()
-            return redirect(our_post)
-    return render(request, "apps/dashboard/post.html", {"post": our_post, "form": form})
-
-def my_posts(request, user_id):
-    owner = User.objects.get(id=user_id)
-    if not request.user.is_authenticated:
-        return redirect("/")
-    if request.user.id != owner.id:
-        return HttpResponseForbidden()
-    return render(request, "apps/dashboard/my_posts.html", {"owner": owner})
-
-def share_post(request, post_id):
-    our_post = Post.objects.get(id=post_id)
-    try:
-        recipient = User.objects.get(email=request.POST["recipient"])
-        if recipient == request.user:
-            return redirect(our_post)
-        our_post.shared_with.add(recipient)
-    except User.DoesNotExist:
-        pass
-    messages.success(request, "An invite has been sent if that address is registered.")
-    return redirect(our_post)
 
 @login_required(login_url="/")
 def set_palette(request):