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/models.py

@@ -0,0 +1,105 @@
+from django.conf import settings
+from django.db import models
+
+
+class Artifact(models.Model):
+    HTML_FRAGMENT = "html_fragment"
+    HTML_FULL = "html_full"
+    MARKDOWN = "markdown"
+    DECK = "deck"
+    IMAGE = "image"
+    PDF = "pdf"
+    BINARY = "binary"
+
+    AGENT = "agent"
+    PERSON = "person"
+    SYSTEM = "system"
+
+    KIND_CHOICES = [
+        (HTML_FRAGMENT, "HTML fragment"),
+        (HTML_FULL, "Full HTML"),
+        (MARKDOWN, "Markdown"),
+        (DECK, "Deck"),
+        (IMAGE, "Image"),
+        (PDF, "PDF"),
+        (BINARY, "Binary"),
+    ]
+
+    SOURCE_TYPE_CHOICES = [
+        (AGENT, "Agent"),
+        (PERSON, "Person"),
+        (SYSTEM, "System"),
+    ]
+
+    id = models.CharField(max_length=8, primary_key=True)
+    owner = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="artifacts")
+    source = models.CharField(max_length=80, db_index=True)
+    title = models.CharField(max_length=200)
+    kind = models.CharField(max_length=20, choices=KIND_CHOICES)
+    theme = models.CharField(max_length=40, blank=True)
+    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(default=list, blank=True)
+    source_prompt = models.TextField(blank=True)
+    source_type = models.CharField(max_length=20, choices=SOURCE_TYPE_CHOICES, default=AGENT)
+    source_name = models.CharField(max_length=120, blank=True)
+    source_id = models.CharField(max_length=120, blank=True)
+    metadata = models.JSONField(default=dict, blank=True)
+    read_at = models.DateTimeField(null=True, blank=True)
+    is_kept = models.BooleanField(default=False)
+    size_bytes = models.BigIntegerField(default=0)
+
+    @property
+    def is_unread(self):
+        return self.read_at is None
+
+    class Meta:
+        ordering = ["-created_at"]
+
+    def __str__(self):
+        return f"{self.title} ({self.source})"
+
+
+class TagColor(models.Model):
+    name = models.CharField(max_length=40, primary_key=True)
+    color = models.CharField(max_length=20)
+
+    def __str__(self):
+        return f"{self.name} ({self.color})"
+
+
+class UserProfile(models.Model):
+    DEFAULT_QUOTA_BYTES = 1024 * 1024 * 1024  # 1 GB
+
+    user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="profile")
+    quota_bytes = models.BigIntegerField(default=DEFAULT_QUOTA_BYTES)
+
+    def __str__(self):
+        return f"{self.user} quota={self.quota_bytes}"
+
+
+class Asset(models.Model):
+    """An image uploaded for embedding inside an artifact's content.
+
+    Uploaded before the artifact exists, so `artifact` is null until the
+    artifact referencing its URL is created. Unattached assets are swept
+    after ASSET_ORPHAN_GRACE; attached ones die with their artifact.
+    """
+
+    id = models.CharField(max_length=12, primary_key=True)
+    owner = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="assets")
+    artifact = models.ForeignKey(
+        Artifact, on_delete=models.CASCADE, related_name="assets", null=True, blank=True
+    )
+    path = models.CharField(max_length=500)
+    content_type = models.CharField(max_length=100)
+    size_bytes = models.BigIntegerField(default=0)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        ordering = ["-created_at"]
+
+    def __str__(self):
+        return f"{self.id} ({self.content_type})"