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/billboard/views.py

@@ -1,18 +1,20 @@
 import json
 
+from django.contrib import messages
 from django.contrib.auth.decorators import login_required
 from django.utils.html import mark_safe
 from django.db.models import Max, Q
-from django.http import JsonResponse
+from django.http import HttpResponseForbidden, JsonResponse
 from django.shortcuts import redirect, render
 
 from apps.applets.utils import applet_context, apply_applet_toggle
-from apps.dashboard.forms import LineForm
-from apps.dashboard.models import Post
+from apps.billboard.forms import ExistingPostLineForm, LineForm
+from apps.billboard.models import Post
 from apps.dashboard.views import _PALETTE_DEFS
 from apps.drama.models import GameEvent, Note, ScrollPosition
 from apps.epic.models import Room
 from apps.epic.utils import rooms_for_user
+from apps.lyric.models import User
 
 _PALETTE_LABELS = {p["name"]: p["label"] for p in _PALETTE_DEFS}
 
@@ -211,6 +213,71 @@ def doff_title(request, slug):
     return JsonResponse({"ok": True, "greeting": "Welcome,", "title": "Earthman"})
 
 
+# ── Post / Line CRUD (relocated from apps.dashboard) ────────────────────────
+# Templates also live under templates/apps/billboard/. URL names sit in the
+# `billboard:` namespace so reversers across the codebase carry the prefix.
+
+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)
+
+    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/billboard/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/billboard/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 save_scroll_position(request, room_id):
     if request.method != "POST":