Initial public commit

Daybook: a self-hosted, multi-user Django + DRF app where agents, scripts,
or people publish artifacts and each logged-in user browses their own
time-ordered, label-filterable feed.

This squashes prior local development history (kept privately on a separate
branch) into a single clean starting point for the public repository.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

artifacts/migrations/0001_initial.py

@@ -0,0 +1,27 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    initial = True
+
+    dependencies = []
+
+    operations = [
+        migrations.CreateModel(
+            name="Artifact",
+            fields=[
+                ("id", models.CharField(max_length=8, primary_key=True, serialize=False)),
+                ("persona", models.CharField(db_index=True, max_length=80)),
+                ("title", models.CharField(max_length=200)),
+                ("kind", models.CharField(choices=[("html_fragment", "HTML fragment"), ("html_full", "Full HTML"), ("markdown", "Markdown"), ("deck", "Deck"), ("image", "Image"), ("pdf", "PDF"), ("binary", "Binary")], max_length=20)),
+                ("theme", models.CharField(blank=True, max_length=40)),
+                ("day", models.DateField(db_index=True)),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("path", models.CharField(max_length=500)),
+                ("original_kind", models.CharField(max_length=20)),
+                ("tags", models.JSONField(blank=True, default=list)),
+                ("source_prompt", models.TextField(blank=True)),
+            ],
+            options={"ordering": ["-created_at"]},
+        ),
+    ]