🐾 feat(library): per-app managed_by replaces hardcoded Daedalus badge

Libraries created through the API are now stamped with the name of the
UserToken that created them (Library.managed_by), on both the workspace
and plain create endpoints; web-session creates stay null/unmanaged. The
idempotent workspace re-POST lazily backfills null managed_by, and a
one-off backfill_managed_by command labels pre-existing rows (workspace
inference: kairos-mail-* → Kairos, else Daedalus; Spelunker via ingest
job provenance).

UI badges and warnings now render "Managed by <app>" via
managed_by_display (inference fallback keeps legacy rows accurate before
backfill). The list scope filter becomes all/managed/unmanaged with the
old daedalus/global values aliased for bookmarks. The plain create
endpoint also gains an explicit 409 name_conflict (previously a raw
UniqueProperty 500) reporting the existing library's uid and manager.

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

.env.example

@@ -91,6 +91,19 @@ SPELUNKER_S3_REGION_NAME=us-east-1
 SPELUNKER_S3_USE_SSL=True
 SPELUNKER_S3_VERIFY=True
 
+# --- Kairos S3 (cross-bucket reads for ingest, source="kairos-mail") ---
+# Consumed by: worker only
+# Kairos renders synced mail to text documents in its own bucket and posts
+# ingest requests with source="kairos-mail". These creds should be scoped
+# read-only to the Kairos bucket in your secret manager.
+KAIROS_S3_ENDPOINT_URL=https://nyx.helu.ca:8555
+KAIROS_S3_ACCESS_KEY_ID=
+KAIROS_S3_SECRET_ACCESS_KEY=
+KAIROS_S3_BUCKET_NAME=kairos
+KAIROS_S3_REGION_NAME=us-east-1
+KAIROS_S3_USE_SSL=True
+KAIROS_S3_VERIFY=True
+
 # --- Celery / RabbitMQ (Oberon) ---------------------------------------------
 # Consumed by: app (producer), worker (consumer). NOT mcp.
 # Remember to percent-encode any password characters that have meaning in a

.gitea/workflows/cve-scan-docker-build.yml

@@ -3,8 +3,6 @@ name: CVE Scan & Docker Build
 on:
   push:
     branches: [main]
-  pull_request:
-    branches: [main]
 
 env:
   REGISTRY: git.helu.ca
@@ -75,8 +73,6 @@ jobs:
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
-            type=ref,event=branch
-            type=ref,event=pr
             type=sha,prefix=
             type=raw,value=latest,enable=${{ gitea.ref == 'refs/heads/main' }}
 

docker-compose.yaml

@@ -346,6 +346,13 @@ services:
       - SPELUNKER_S3_REGION_NAME=${SPELUNKER_S3_REGION_NAME}
       - SPELUNKER_S3_USE_SSL=${SPELUNKER_S3_USE_SSL}
       - SPELUNKER_S3_VERIFY=${SPELUNKER_S3_VERIFY}
+      - KAIROS_S3_ENDPOINT_URL=${KAIROS_S3_ENDPOINT_URL}
+      - KAIROS_S3_ACCESS_KEY_ID=${KAIROS_S3_ACCESS_KEY_ID}
+      - KAIROS_S3_SECRET_ACCESS_KEY=${KAIROS_S3_SECRET_ACCESS_KEY}
+      - KAIROS_S3_BUCKET_NAME=${KAIROS_S3_BUCKET_NAME}
+      - KAIROS_S3_REGION_NAME=${KAIROS_S3_REGION_NAME}
+      - KAIROS_S3_USE_SSL=${KAIROS_S3_USE_SSL}
+      - KAIROS_S3_VERIFY=${KAIROS_S3_VERIFY}
       # Celery / RabbitMQ
       - CELERY_BROKER_URL=${CELERY_BROKER_URL}
       - CELERY_RESULT_BACKEND=${CELERY_RESULT_BACKEND}
@@ -371,7 +378,12 @@ services:
     volumes:
       - media:/mnt/media
     healthcheck:
-      test: ["CMD", "celery", "-A", "mnemosyne", "inspect", "ping", "-d", "celery@$$HOSTNAME"]
+      # No -d destination: exec-form CMD has no shell, so $$HOSTNAME never
+      # expanded and the literal "celery@$HOSTNAME" matched no node → every
+      # check failed. There's one worker per container, so an unfiltered ping
+      # (any node replies = healthy) is correct. -t gives the reply room to
+      # round-trip through the broker on Oberon (~450ms observed) under jitter.
+      test: ["CMD", "celery", "-A", "mnemosyne", "inspect", "ping", "-t", "8"]
       interval: 60s
       timeout: 10s
       retries: 3

mnemosyne/library/api/serializers.py

@@ -15,6 +15,7 @@ LIBRARY_TYPE_CHOICES = [
     "film",
     "art",
     "journal",
+    "email",
     "business",
     "finance",
 ]
@@ -36,6 +37,7 @@ class LibrarySerializer(serializers.Serializer):
         required=False, allow_blank=True, default=""
     )
     workspace_id = serializers.CharField(read_only=True)
+    managed_by = serializers.CharField(read_only=True)
     created_at = serializers.DateTimeField(read_only=True)
 
 
@@ -192,6 +194,7 @@ class WorkspaceStatusSerializer(serializers.Serializer):
     name = serializers.CharField()
     library_type = serializers.CharField()
     description = serializers.CharField(allow_blank=True)
+    managed_by = serializers.CharField(allow_null=True, required=False)
     item_count = serializers.IntegerField()
     chunk_count = serializers.IntegerField()
     created_at = serializers.DateTimeField()

mnemosyne/library/api/views.py

@@ -17,6 +17,7 @@ from rest_framework.permissions import IsAuthenticated
 from rest_framework.response import Response
 
 from library.content_types import get_library_type_config
+from mcp_server.drf_auth import request_token_label
 
 from .serializers import (
     CollectionSerializer,
@@ -84,6 +85,28 @@ def library_list_create(request):
     serializer.is_valid(raise_exception=True)
     data = serializer.validated_data
 
+    # Library.name is globally unique; reject collisions with a clean 409
+    # (uid + managed_by included so the caller can say who owns the name)
+    # instead of letting the unique-index save raise a 500.
+    try:
+        existing = Library.nodes.get(name=data["name"])
+    except Library.DoesNotExist:
+        existing = None
+    if existing is not None:
+        logger.warning(
+            "library_create name_conflict name=%s existing_uid=%s caller=%s",
+            data["name"], existing.uid, request.user.username,
+        )
+        return Response(
+            {
+                "detail": f"A library named '{data['name']}' already exists.",
+                "code": "name_conflict",
+                "uid": existing.uid,
+                "managed_by": existing.managed_by_display or None,
+            },
+            status=status.HTTP_409_CONFLICT,
+        )
+
     # Populate defaults from content-type config if not provided
     library_type = data["library_type"]
     defaults = get_library_type_config(library_type)
@@ -92,6 +115,7 @@ def library_list_create(request):
         name=data["name"],
         library_type=library_type,
         description=data.get("description", ""),
+        managed_by=request_token_label(request),
         chunking_config=data.get("chunking_config") or defaults["chunking_config"],
         embedding_instruction=(
             data.get("embedding_instruction") or defaults["embedding_instruction"]

mnemosyne/library/api/workspaces.py

@@ -17,12 +17,15 @@ across users.
 import logging
 
 from neomodel import db
+from neomodel.exceptions import UniqueProperty
 from rest_framework import status
 from rest_framework.decorators import api_view, permission_classes
 from rest_framework.permissions import IsAuthenticated
 from rest_framework.response import Response
 
 from library.content_types import get_library_type_config
+from library.services.library_delete import delete_library_cascade
+from mcp_server.drf_auth import request_token_label
 
 from .serializers import WorkspaceCreateSerializer, WorkspaceStatusSerializer
 
@@ -47,6 +50,7 @@ def _serialize_workspace(lib):
         "name": lib.name,
         "library_type": lib.library_type,
         "description": lib.description or "",
+        "managed_by": lib.managed_by,
         "item_count": item_count,
         "chunk_count": chunk_count,
         "created_at": lib.created_at,
@@ -84,7 +88,10 @@ def workspace_create(request):
                 data["workspace_id"], request.user.username,
             )
             return Response(
-                {"detail": "Workspace id is already in use."},
+                {
+                    "detail": "Workspace id is already in use.",
+                    "code": "owner_conflict",
+                },
                 status=status.HTTP_409_CONFLICT,
             )
         if existing.library_type != data["library_type"]:
@@ -94,10 +101,23 @@ def workspace_create(request):
                         "library_type is immutable for an existing workspace "
                         f"(have '{existing.library_type}', "
                         f"got '{data['library_type']}')."
-                    )
+                    ),
+                    "code": "library_type_immutable",
                 },
                 status=status.HTTP_409_CONFLICT,
             )
+        # Lazy backfill: pre-managed_by libraries pick up the label from
+        # the first idempotent re-POST. Null-only — an already-stamped
+        # library never changes manager.
+        if not existing.managed_by:
+            label = request_token_label(request)
+            if label:
+                existing.managed_by = label
+                existing.save()
+                logger.info(
+                    "Backfilled managed_by=%s workspace_id=%s library_uid=%s",
+                    label, existing.workspace_id, existing.uid,
+                )
         logger.info(
             "Workspace already exists workspace_id=%s library_uid=%s",
             data["workspace_id"], existing.uid,
@@ -114,12 +134,35 @@ def workspace_create(request):
         description=data.get("description", ""),
         workspace_id=data["workspace_id"],
         owner_username=request.user.username,
+        managed_by=request_token_label(request),
         chunking_config=defaults["chunking_config"],
         embedding_instruction=defaults["embedding_instruction"],
         reranker_instruction=defaults["reranker_instruction"],
         llm_context_prompt=defaults["llm_context_prompt"],
     )
-    lib.save()
+    try:
+        lib.save()
+    except UniqueProperty:
+        # Library.name is globally unique. A name collision here almost always
+        # means an orphaned Library survived a failed Daedalus workspace delete
+        # (the old node kept the name), and the recreate under a new
+        # workspace_id now clashes. Surface a clean 409 instead of a 500 so
+        # Daedalus can record + report it; the operator clears the orphan
+        # (admin delete) or renames the workspace.
+        logger.warning(
+            "workspace_create name_conflict workspace_id=%s name=%s",
+            data["workspace_id"], data["name"],
+        )
+        return Response(
+            {
+                "detail": (
+                    f"A library named '{data['name']}' already exists in "
+                    "Mnemosyne."
+                ),
+                "code": "name_conflict",
+            },
+            status=status.HTTP_409_CONFLICT,
+        )
     logger.info(
         "Workspace created workspace_id=%s library_uid=%s library_type=%s",
         data["workspace_id"], lib.uid, lib.library_type,
@@ -165,74 +208,15 @@ def workspace_detail_or_delete(request, workspace_id):
     if lib is None:
         return Response(status=status.HTTP_204_NO_CONTENT)
 
-    library_uid = lib.uid
-    library_name = lib.name
-
-    # Step 1-4: delete chunks, items, collections, then the library itself.
-    # We collect Item s3_keys first so the caller can clean up S3
-    # asynchronously (a future enhancement — for now, the keys are logged).
-    s3_rows, _ = db.cypher_query(
-        "MATCH (l:Library {workspace_id: $wsid})-[:CONTAINS]->(:Collection)"
-        "-[:CONTAINS]->(i:Item) RETURN i.uid, i.s3_key",
-        {"wsid": workspace_id},
-    )
-    item_s3_keys = [(r[0], r[1]) for r in s3_rows if r[1]]
-
-    db.cypher_query(
-        """
-        MATCH (l:Library {workspace_id: $wsid})-[:CONTAINS]->(:Collection)
-        -[:CONTAINS]->(i:Item)-[:HAS_CHUNK]->(c:Chunk)
-        DETACH DELETE c
-        """,
-        {"wsid": workspace_id},
-    )
-    db.cypher_query(
-        """
-        MATCH (l:Library {workspace_id: $wsid})-[:CONTAINS]->(:Collection)
-        -[:CONTAINS]->(i:Item)-[:HAS_IMAGE]->(img:Image)
-        OPTIONAL MATCH (img)-[:HAS_EMBEDDING]->(emb:ImageEmbedding)
-        DETACH DELETE img, emb
-        """,
-        {"wsid": workspace_id},
-    )
-    db.cypher_query(
-        """
-        MATCH (l:Library {workspace_id: $wsid})-[:CONTAINS]->(:Collection)
-        -[:CONTAINS]->(i:Item)
-        DETACH DELETE i
-        """,
-        {"wsid": workspace_id},
-    )
-    db.cypher_query(
-        """
-        MATCH (l:Library {workspace_id: $wsid})-[:CONTAINS]->(col:Collection)
-        DETACH DELETE col
-        """,
-        {"wsid": workspace_id},
-    )
-    db.cypher_query(
-        "MATCH (l:Library {workspace_id: $wsid}) DETACH DELETE l",
-        {"wsid": workspace_id},
-    )
-
-    # Step 5: orphan Concept garbage collection.
-    orphan_result, _ = db.cypher_query(
-        """
-        MATCH (con:Concept)
-        WHERE NOT (con)<-[:REFERENCES]-() AND NOT (con)<-[:MENTIONS]-()
-              AND NOT (con)<-[:DEPICTS]-()
-        WITH con
-        DETACH DELETE con
-        RETURN count(con) AS deleted
-        """
-    )
-    orphans_deleted = orphan_result[0][0] if orphan_result else 0
+    # Delete the Library and everything reachable + unique to it, plus
+    # orphan-Concept GC. Shared with the admin/HTML delete path.
+    result = delete_library_cascade(lib)
 
     logger.info(
         "Workspace deleted workspace_id=%s library_uid=%s name=%s "
         "items=%d orphans_deleted=%d",
-        workspace_id, library_uid, library_name,
-        len(item_s3_keys), orphans_deleted,
+        workspace_id, result["library_uid"], result["name"],
+        result["item_count"], result["orphans_deleted"],
     )
 
     return Response(status=status.HTTP_204_NO_CONTENT)

mnemosyne/library/content_types.py

@@ -241,6 +241,38 @@ LIBRARY_TYPE_DEFAULTS = {
             "4) The commercial purpose — positioning, pricing, capability demonstration."
         ),
     },
+    "email": {
+        "chunking_config": {
+            "strategy": "entry_level",
+            "chunk_size": 512,
+            "chunk_overlap": 32,
+            "respect_boundaries": ["message", "quote", "paragraph"],
+        },
+        "embedding_instruction": (
+            "Represent this email message for retrieval. "
+            "Focus on the sender, recipients, subject, dates, requests and "
+            "commitments made, and the people, organizations, and events discussed."
+        ),
+        "reranker_instruction": (
+            "Re-rank email messages based on relevance to the query. "
+            "Prioritize messages matching the correspondents, subject matter, "
+            "time period, and any specific commitments or requests mentioned."
+        ),
+        "llm_context_prompt": (
+            "The following excerpts are from personal email correspondence. "
+            "This is private content — answer with discretion. Attribute "
+            "statements to their senders, note dates, and distinguish what was "
+            "asked from what was agreed. Quoted text below a reply is earlier "
+            "context, not the sender's own words."
+        ),
+        "vision_prompt": (
+            "Analyze this image from an email message. Identify:\n"
+            "1) Image type (photograph, screenshot, scanned document, chart, signature graphic).\n"
+            "2) What it depicts — people, places, documents, data.\n"
+            "3) Any visible text, dates, or figures.\n"
+            "4) Its role in the message — attachment content, inline illustration, or boilerplate."
+        ),
+    },
     "finance": {
         "chunking_config": {
             "strategy": "section_aware",
@@ -282,7 +314,7 @@ def get_library_type_config(library_type):
 
     Args:
         library_type: One of 'fiction', 'nonfiction', 'technical', 'music',
-                      'film', 'art', 'journal', 'business', 'finance'
+                      'film', 'art', 'journal', 'email', 'business', 'finance'
 
     Returns:
         dict with keys: chunking_config, embedding_instruction,

mnemosyne/library/management/commands/backfill_managed_by.py

@@ -0,0 +1,111 @@
+"""One-off backfill of ``Library.managed_by`` for pre-existing libraries.
+
+``managed_by`` is stamped from the creating API token's name, so
+libraries created before the property existed have it null. This
+command labels them:
+
+* Workspace-scoped libraries get :func:`infer_legacy_manager`'s answer —
+  ``Kairos`` for ``kairos-mail-*`` workspace ids, ``Daedalus`` otherwise.
+* Global libraries that Spelunker ingested into (any ``IngestJob`` with
+  ``source="spelunker"``) get the Spelunker label.
+* Everything else stays null (hand-made in the web UI).
+
+Label flags let the operator match the *actual* production token names
+so backfilled rows render identically to newly stamped ones.
+
+Idempotent: only null ``managed_by`` is ever written, and the lazy fill
+in ``workspace_create`` is also null-only, so re-runs and later API
+traffic never overwrite these labels.
+"""
+
+from __future__ import annotations
+
+import logging
+
+from django.core.management.base import BaseCommand, CommandError
+
+from library.models import IngestJob
+
+logger = logging.getLogger(__name__)
+
+
+class Command(BaseCommand):
+    help = (
+        "Backfill Library.managed_by for libraries created before the "
+        "property existed. Workspace libraries are labelled by inference "
+        "(kairos-mail-* → Kairos, else Daedalus); global libraries with "
+        "Spelunker ingest jobs get the Spelunker label."
+    )
+
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "--daedalus-label", default="Daedalus",
+            help="Label for non-Kairos workspace libraries (default: Daedalus).",
+        )
+        parser.add_argument(
+            "--kairos-label", default="Kairos",
+            help="Label for kairos-mail-* workspace libraries (default: Kairos).",
+        )
+        parser.add_argument(
+            "--spelunker-label", default="Spelunker",
+            help="Label for global libraries with Spelunker ingest jobs "
+                 "(default: Spelunker).",
+        )
+        parser.add_argument(
+            "--dry-run", action="store_true",
+            help="Report what would be labelled, don't persist.",
+        )
+
+    def handle(self, *args, **options):
+        try:
+            from library.models import Library, infer_legacy_manager
+        except Exception as exc:  # pragma: no cover
+            raise CommandError(
+                f"Could not import library.models.Library (Neo4j unreachable?): {exc}"
+            ) from exc
+
+        overrides = {
+            "Daedalus": options["daedalus_label"],
+            "Kairos": options["kairos_label"],
+        }
+
+        spelunker_uids = set(
+            IngestJob.objects
+            .filter(source="spelunker")
+            .values_list("library_uid", flat=True)
+            .distinct()
+        )
+
+        candidates = list(Library.nodes.filter(managed_by__isnull=True))
+
+        to_label = []
+        for lib in candidates:
+            label = infer_legacy_manager(lib.workspace_id)
+            if label:
+                label = overrides[label]
+            elif lib.uid in spelunker_uids:
+                label = options["spelunker_label"]
+            if label:
+                to_label.append((lib, label))
+
+        self.stdout.write(f"Libraries with null managed_by: {len(candidates)}")
+        self.stdout.write(
+            self.style.SUCCESS(f"Will label: {len(to_label)} "
+                               f"(unmanaged, left null: {len(candidates) - len(to_label)})")
+        )
+
+        for lib, label in to_label:
+            self.stdout.write(f"  {lib.uid}  {lib.name!r} → {label}")
+
+        if options["dry_run"]:
+            self.stdout.write(self.style.WARNING("--dry-run: nothing written."))
+            return
+
+        for lib, label in to_label:
+            lib.managed_by = label
+            lib.save()
+            logger.info(
+                "backfill_managed_by uid=%s name=%s label=%s",
+                lib.uid, lib.name, label,
+            )
+        self.stdout.write(self.style.SUCCESS("Done."))

mnemosyne/library/models.py

@@ -51,6 +51,18 @@ class NearbyImageRel(StructuredRel):
 # --- Node models ---
 
 
+def infer_legacy_manager(workspace_id):
+    """Manager label for pre-``managed_by`` workspace libraries, else None.
+
+    Kairos mail workspaces are recognisable by their deterministic
+    ``kairos-mail-`` id prefix; every other workspace id is a Daedalus
+    workspace UUID.
+    """
+    if not workspace_id:
+        return None
+    return "Kairos" if workspace_id.startswith("kairos-mail-") else "Daedalus"
+
+
 class Library(StructuredNode):
     """
     Top-level container representing a content library.
@@ -63,6 +75,11 @@ class Library(StructuredNode):
     across the whole instance) or *workspace-scoped* (workspace_id set —
     visible only to agents inside that Daedalus workspace). Scoping is
     enforced structurally by every search query.
+
+    Independently of scoping, a library may be *app-managed*
+    (``managed_by`` set — created through the API by an external app such
+    as Daedalus, Kairos, or Spelunker, which owns its content lifecycle)
+    or unmanaged (created by hand in the web UI).
     """
 
     uid = UniqueIdProperty()
@@ -77,6 +94,7 @@ class Library(StructuredNode):
             "film": "Film",
             "art": "Art",
             "journal": "Journal",
+            "email": "Email",
             "business": "Business",
             "finance": "Finance",
         },
@@ -92,6 +110,12 @@ class Library(StructuredNode):
     # this user. Null for global libraries.
     owner_username = StringProperty(required=False, index=True)
 
+    # Name of the API token that created this library ("Daedalus",
+    # "Kairos", "Spelunker", ...). Null for libraries created in the
+    # web UI. Stamped at create time only — token rotation or edits by
+    # another token never change it.
+    managed_by = StringProperty(required=False, index=True)
+
     # Content-type configuration
     chunking_config = JSONProperty(default={})
     embedding_instruction = StringProperty(default="")
@@ -103,6 +127,16 @@ class Library(StructuredNode):
     # Relationships
     collections = RelationshipTo("Collection", "CONTAINS")
 
+    @property
+    def managed_by_display(self):
+        """Managing-app label for display; empty string when unmanaged.
+
+        Falls back to inference for workspace libraries created before
+        ``managed_by`` existed, so rendering is identical before and
+        after the backfill command runs.
+        """
+        return self.managed_by or infer_legacy_manager(self.workspace_id) or ""
+
     def __str__(self):
         return f"{self.name} ({self.library_type})"
 

mnemosyne/library/services/library_delete.py

@@ -0,0 +1,108 @@
+"""
+Shared Library deletion cascade.
+
+Deletes a Library node and everything reachable AND unique to it
+(Collections, Items, Chunks, Images + ImageEmbeddings), then garbage-collects
+Concepts that are no longer referenced by any other Library.
+
+Keyed on the Library ``uid`` so it works for *both* global libraries
+(``workspace_id`` is null) and workspace-scoped libraries. This is the single
+source of truth used by:
+
+  * the Daedalus integration API (``DELETE /library/api/workspaces/{id}/``), and
+  * the admin/HTML delete view (``library_delete``).
+
+Concept-safe: orphan-only Concept GC happens at the end. Concepts still
+referenced by another library (workspace or global) are preserved.
+"""
+
+import logging
+
+from neomodel import db
+
+logger = logging.getLogger(__name__)
+
+
+def delete_library_cascade(lib) -> dict:
+    """Delete ``lib`` and all content reachable and unique to it.
+
+    :param lib: A ``library.models.Library`` node instance.
+    :returns: Dict with ``library_uid``, ``name``, ``item_count``,
+        ``item_s3_keys`` (list of ``(uid, s3_key)`` for async S3 cleanup),
+        and ``orphans_deleted`` (Concept GC count).
+    """
+    library_uid = lib.uid
+    library_name = lib.name
+
+    # Collect Item s3_keys first so the caller can clean up S3 asynchronously
+    # (a future enhancement — for now, the keys are returned/logged).
+    s3_rows, _ = db.cypher_query(
+        "MATCH (l:Library {uid: $uid})-[:CONTAINS]->(:Collection)"
+        "-[:CONTAINS]->(i:Item) RETURN i.uid, i.s3_key",
+        {"uid": library_uid},
+    )
+    item_s3_keys = [(r[0], r[1]) for r in s3_rows if r[1]]
+
+    db.cypher_query(
+        """
+        MATCH (l:Library {uid: $uid})-[:CONTAINS]->(:Collection)
+        -[:CONTAINS]->(i:Item)-[:HAS_CHUNK]->(c:Chunk)
+        DETACH DELETE c
+        """,
+        {"uid": library_uid},
+    )
+    db.cypher_query(
+        """
+        MATCH (l:Library {uid: $uid})-[:CONTAINS]->(:Collection)
+        -[:CONTAINS]->(i:Item)-[:HAS_IMAGE]->(img:Image)
+        OPTIONAL MATCH (img)-[:HAS_EMBEDDING]->(emb:ImageEmbedding)
+        DETACH DELETE img, emb
+        """,
+        {"uid": library_uid},
+    )
+    db.cypher_query(
+        """
+        MATCH (l:Library {uid: $uid})-[:CONTAINS]->(:Collection)
+        -[:CONTAINS]->(i:Item)
+        DETACH DELETE i
+        """,
+        {"uid": library_uid},
+    )
+    db.cypher_query(
+        """
+        MATCH (l:Library {uid: $uid})-[:CONTAINS]->(col:Collection)
+        DETACH DELETE col
+        """,
+        {"uid": library_uid},
+    )
+    db.cypher_query(
+        "MATCH (l:Library {uid: $uid}) DETACH DELETE l",
+        {"uid": library_uid},
+    )
+
+    # Orphan Concept garbage collection: drop Concepts no longer referenced
+    # by any Item (REFERENCES/MENTIONS) or Image (DEPICTS).
+    orphan_result, _ = db.cypher_query(
+        """
+        MATCH (con:Concept)
+        WHERE NOT (con)<-[:REFERENCES]-() AND NOT (con)<-[:MENTIONS]-()
+              AND NOT (con)<-[:DEPICTS]-()
+        WITH con
+        DETACH DELETE con
+        RETURN count(con) AS deleted
+        """
+    )
+    orphans_deleted = orphan_result[0][0] if orphan_result else 0
+
+    logger.info(
+        "Library cascade-deleted library_uid=%s name=%s items=%d orphans_deleted=%d",
+        library_uid, library_name, len(item_s3_keys), orphans_deleted,
+    )
+
+    return {
+        "library_uid": library_uid,
+        "name": library_name,
+        "item_count": len(item_s3_keys),
+        "item_s3_keys": item_s3_keys,
+        "orphans_deleted": orphans_deleted,
+    }

mnemosyne/library/services/parsers.py

@@ -31,8 +31,11 @@ PYMUPDF_EXTENSIONS = {
 # Plain text extensions — read directly, no PyMuPDF needed
 PLAINTEXT_EXTENSIONS = {"txt", "md", "csv", "tsv", "log", "json", "yaml", "yml", "xml"}
 
-# Image extensions — store as Image nodes directly
-IMAGE_EXTENSIONS = {"jpg", "jpeg", "png", "gif", "bmp", "tiff", "tif", "webp", "svg"}
+# Image extensions — store as Image nodes directly.
+# SVG is deliberately absent: it is vector XML that Pillow cannot decode and
+# that the vision stage cannot send as a data URI, so it gets rasterized by
+# _parse_svg_file instead.
+IMAGE_EXTENSIONS = {"jpg", "jpeg", "png", "gif", "bmp", "tiff", "tif", "webp"}
 
 # Minimum image dimensions to extract (skip tiny icons/bullets)
 MIN_IMAGE_WIDTH = 50
@@ -98,6 +101,12 @@ class DocumentParser:
         if file_type in PLAINTEXT_EXTENSIONS:
             return self._parse_plaintext(file_path, file_type)
 
+        # Checked before PYMUPDF_EXTENSIONS: PyMuPDF can open an SVG, but
+        # rendering a multi-page Write note as one document yields a blank or
+        # illegible image (see svg_raster), so it needs page-aware handling.
+        if file_type == "svg":
+            return self._parse_svg_file(file_path, file_type)
+
         if file_type in IMAGE_EXTENSIONS:
             return self._parse_image_file(file_path, file_type)
 
@@ -309,6 +318,61 @@ class DocumentParser:
                 file_type=file_type,
             )
 
+    def _parse_svg_file(self, file_path: str, file_type: str) -> ParseResult:
+        """
+        Rasterize an SVG into one ExtractedImage per page.
+
+        SVG is vector XML: Pillow cannot decode it and the vision stage cannot
+        put it in a data URI, so it is rendered to PNG here. Multi-page Write
+        notes become one image per page so each page reaches vision/OCR at a
+        legible size.
+
+        :param file_path: Path to the SVG file.
+        :param file_type: Normalized file extension ("svg").
+        :returns: ParseResult with one image per rendered page.
+        """
+        with DOCUMENT_PARSE_DURATION.labels(file_type=file_type).time():
+            try:
+                from library.services.svg_raster import render_svg_pages
+
+                with open(file_path, "rb") as f:
+                    data = f.read()
+
+                pages = render_svg_pages(data)
+            except Exception as exc:
+                DOCUMENTS_PARSED_TOTAL.labels(file_type=file_type, status="error").inc()
+                logger.error("Failed to rasterize SVG file_type=%s: %s", file_type, exc)
+                raise
+
+            images = [
+                ExtractedImage(
+                    data=png,
+                    ext="png",
+                    width=width,
+                    height=height,
+                    source_page=index,
+                    source_index=0,
+                )
+                for index, (png, width, height) in enumerate(pages)
+            ]
+
+            DOCUMENTS_PARSED_TOTAL.labels(file_type=file_type, status="success").inc()
+            IMAGES_EXTRACTED_TOTAL.labels(file_type=file_type).inc(len(images))
+
+            logger.info(
+                "Parsed SVG file_type=%s pages=%d bytes=%d",
+                file_type,
+                len(images),
+                len(data),
+            )
+
+            return ParseResult(
+                text_blocks=[],
+                images=images,
+                metadata={"page_count": len(images)},
+                file_type=file_type,
+            )
+
     def _parse_image_file(self, file_path: str, file_type: str) -> ParseResult:
         """
         Handle a standalone image file — store as a single ExtractedImage.

mnemosyne/library/services/svg_raster.py

@@ -0,0 +1,263 @@
+"""SVG rasterization for the ingest pipeline.
+
+The vision stage sends each extracted image to a vision LLM as a ``data:`` URI,
+which cannot carry ``image/svg+xml`` — so an SVG has to become raster before it
+can be described, OCR'd, or embedded. PyMuPDF (already a dependency for PDF
+parsing) renders SVG natively, so this needs no cairo/rsvg system libraries.
+
+The non-obvious part is page splitting. Handwritten notes from the Write
+(Stylus Labs) app are a single SVG document holding one or more
+``<svg class="write-page">`` children stacked vertically via x/y offsets. Two
+root formats exist in the wild and *both* must be split per page:
+
+- Older files carry no width/height on the root ``<svg>``. Rendering the
+  document as-is makes PyMuPDF fall back to US-Letter and emit the top-left
+  corner only — ruled lines and no handwriting, in a perfectly valid PNG.
+- Newer files (Write commit eeab021) do carry root width/height, spanning the
+  full stacked extent. Rendering those as-is yields one very tall strip; capped
+  to a sane longest edge, a 5-page note squashes to ~209px wide, well past
+  illegible.
+
+Write never rewrites existing files, so the old format is permanent rather than
+a migration window. Page geometry lives on the ``write-page`` element and is
+identical across both formats, so splitting ignores the root dimensions
+entirely and needs no format detection.
+
+.. note::
+   Daedalus carries a twin of this module at
+   ``backend/daedalus/extraction/svg.py``, which returns base64 for direct
+   chat attachment. The two are deliberately duplicated rather than shared —
+   the repos ship no common package — so fixes belong in both.
+"""
+
+from __future__ import annotations
+
+import copy
+import logging
+import re
+
+from lxml import etree
+
+logger = logging.getLogger(__name__)
+
+SVG_NS = "http://www.w3.org/2000/svg"
+XLINK_NS = "http://www.w3.org/1999/xlink"
+
+_SVG = f"{{{SVG_NS}}}"
+_PAGE_CLASS = "write-page"
+
+# Write documents render on a grey backdrop; pages themselves are transparent,
+# so each rendered page needs an explicit white underlay or strokes land on
+# black in the flattened PNG.
+_PAGE_BACKGROUND = "#ffffff"
+
+#: Longest edge of a rendered page, in pixels. Enough for a vision model to
+#: read handwriting without spending tokens on unusable resolution.
+DEFAULT_TARGET_PX = 1568
+
+#: Cap on pages rendered from one document.
+DEFAULT_MAX_PAGES = 20
+
+# Unquoted attribute value in the root tag, e.g. Write's `width=auto`. Matches
+# only bare alphabetic values so numeric or already-quoted attributes are left
+# alone.
+_UNQUOTED_ATTR = re.compile(rb"(\s[-\w:]+)=([A-Za-z][-\w]*)(?=[\s>])")
+_ROOT_TAG = re.compile(rb"<svg[^>]*>")
+
+
+class SvgRenderError(Exception):
+    """Raised when an SVG cannot be parsed or contains no renderable page."""
+
+
+def _repair_root_tag(data: bytes) -> bytes:
+    """Quote unquoted attribute values in the root ``<svg>`` tag.
+
+    Some Write files emit ``width=auto height=auto``, which is not valid XML.
+    A malformation *inside* the root tag defeats ``recover=True`` differently
+    from one in the body: rather than dropping a subtree, libxml2 abandons the
+    whole document and yields a bare root, so every page becomes invisible.
+    Quoting the values first recovers the full tree.
+    """
+    match = _ROOT_TAG.search(data)
+    if not match:
+        return data
+    repaired = _UNQUOTED_ATTR.sub(rb'\1="\2"', match.group(0))
+    if repaired == match.group(0):
+        return data
+    return data[: match.start()] + repaired + data[match.end() :]
+
+
+def _parser() -> etree.XMLParser:
+    """Build the hardened parser used for all untrusted SVG input.
+
+    ``resolve_entities=False`` blocks XXE — ingest content is untrusted.
+    ``huge_tree`` is required because handwriting path data runs to megabytes.
+    ``recover`` salvages the handful of Write files that emit unescaped
+    attribute content and are not well-formed XML.
+    """
+    return etree.XMLParser(
+        huge_tree=True,
+        resolve_entities=False,
+        no_network=True,
+        recover=True,
+    )
+
+
+def _dimension(element: etree._Element, name: str) -> float | None:
+    """Read a CSS-pixel dimension attribute, tolerating a ``px`` suffix."""
+    raw = element.get(name)
+    if not raw:
+        return None
+    try:
+        return float(raw.strip().removesuffix("px"))
+    except ValueError:
+        return None
+
+
+def _viewbox_size(element: etree._Element) -> tuple[float, float] | None:
+    """Derive width/height from a viewBox extent."""
+    raw = element.get("viewBox")
+    if not raw:
+        return None
+    parts = raw.replace(",", " ").split()
+    if len(parts) != 4:
+        return None
+    try:
+        width, height = float(parts[2]), float(parts[3])
+    except ValueError:
+        return None
+    return (width, height) if width > 0 and height > 0 else None
+
+
+def _element_size(element: etree._Element) -> tuple[float, float] | None:
+    """Resolve an element's rendered size from width/height, else viewBox."""
+    width = _dimension(element, "width")
+    height = _dimension(element, "height")
+    if width and height:
+        return width, height
+    return _viewbox_size(element)
+
+
+def _standalone_page(
+    page: etree._Element,
+    defs: etree._Element | None,
+    width: float,
+    height: float,
+) -> bytes:
+    """Wrap one ``write-page`` element as its own renderable SVG document.
+
+    The page is repositioned to the origin (its x/y place it within the stacked
+    parent) and given an explicit viewBox so the renderer has an unambiguous
+    size. ``defs`` is copied in because pen and ruling definitions live on the
+    root and are referenced by page content.
+    """
+    root = etree.Element(f"{_SVG}svg", nsmap={None: SVG_NS, "xlink": XLINK_NS})
+    root.set("width", str(width))
+    root.set("height", str(height))
+    root.set("viewBox", f"0 0 {width} {height}")
+
+    background = etree.SubElement(root, f"{_SVG}rect")
+    background.set("width", "100%")
+    background.set("height", "100%")
+    background.set("fill", _PAGE_BACKGROUND)
+
+    if defs is not None:
+        root.append(copy.deepcopy(defs))
+
+    element = copy.deepcopy(page)
+    for positional in ("x", "y"):
+        element.attrib.pop(positional, None)
+    element.set("viewBox", f"0 0 {width} {height}")
+    root.append(element)
+
+    return etree.tostring(root)
+
+
+def split_svg_pages(data: bytes) -> list[bytes]:
+    """Split an SVG into one standalone document per renderable page.
+
+    Write multi-page notes yield one document per ``write-page`` child. Any
+    other SVG (a diagram, a logo) yields a single document — the input itself,
+    which the renderer sizes from its own width/height or viewBox.
+
+    :param data: Raw SVG bytes.
+    :returns: One or more standalone SVG documents, in page order.
+    :raises SvgRenderError: If the SVG cannot be parsed or has no usable size.
+    """
+    try:
+        root = etree.fromstring(_repair_root_tag(data), _parser())
+    except etree.XMLSyntaxError as exc:
+        raise SvgRenderError(f"Could not parse SVG: {exc}") from exc
+
+    if root is None:
+        raise SvgRenderError("Could not parse SVG: no root element.")
+
+    defs = root.find(f"{_SVG}defs")
+
+    pages: list[bytes] = []
+    for element in root.iter(f"{_SVG}svg"):
+        if element is root:
+            continue
+        if _PAGE_CLASS not in (element.get("class") or "").split():
+            continue
+        size = _element_size(element)
+        if not size:
+            continue
+        pages.append(_standalone_page(element, defs, *size))
+
+    if pages:
+        return pages
+
+    # Generic SVG: render as-is. It must still be sizeable, or the renderer
+    # would silently substitute a default page box.
+    if not _element_size(root):
+        raise SvgRenderError(
+            "SVG has no width/height or viewBox, so its size is undefined."
+        )
+    return [data]
+
+
+def render_svg_pages(
+    data: bytes,
+    max_pages: int = DEFAULT_MAX_PAGES,
+    target_px: int = DEFAULT_TARGET_PX,
+) -> list[tuple[bytes, int, int]]:
+    """Rasterize an SVG to one PNG per page.
+
+    :param data: Raw SVG bytes.
+    :param max_pages: Cap on pages rendered.
+    :param target_px: Longest edge of each rendered page, in pixels.
+    :returns: One ``(png_bytes, width, height)`` tuple per page, in page order.
+    :raises SvgRenderError: If nothing could be rendered.
+    """
+    import fitz
+
+    pages = split_svg_pages(data)
+
+    rendered: list[tuple[bytes, int, int]] = []
+    for index, page_svg in enumerate(pages[:max_pages]):
+        try:
+            with fitz.open(stream=page_svg, filetype="svg") as document:
+                page = document[0]
+                longest = max(page.rect.width, page.rect.height)
+                zoom = target_px / longest if longest else 1.0
+                pixmap = page.get_pixmap(matrix=fitz.Matrix(zoom, zoom))
+                rendered.append(
+                    (pixmap.tobytes("png"), pixmap.width, pixmap.height)
+                )
+        except Exception as exc:
+            raise SvgRenderError(
+                f"Could not render SVG page {index + 1}: {exc}"
+            ) from exc
+
+    if not rendered:
+        raise SvgRenderError("No renderable pages in SVG.")
+
+    logger.info(
+        "Rasterized SVG pages_rendered=%d total_pages=%d target_px=%d",
+        len(rendered),
+        len(pages),
+        target_px,
+    )
+
+    return rendered

mnemosyne/library/templates/library/library_confirm_delete.html

@@ -12,6 +12,25 @@
     <div class="alert alert-warning mb-6">
         <span>Are you sure you want to delete <strong>{{ library.name }}</strong>? This action cannot be undone.</span>
     </div>
+    {% if library.managed_by_display %}
+    <div class="alert alert-error mb-6">
+        <span>
+            <strong>This Library is managed by {{ library.managed_by_display }}</strong>{% if library.workspace_id %}
+            (workspace <code>{{ library.workspace_id }}</code>){% endif %}.
+            {% if library.workspace_id %}
+            Deleting it here removes its embedded content from Mnemosyne, but the
+            source files still live in {{ library.managed_by_display }} — it will
+            be <strong>recreated and re-embedded on the next sync</strong>. Use
+            this to clear an orphaned Library that is blocking workspace
+            re-registration.
+            {% else %}
+            Deleting it here removes its embedded content from Mnemosyne;
+            {{ library.managed_by_display }} may recreate and re-embed it on its
+            next sync.
+            {% endif %}
+        </span>
+    </div>
+    {% endif %}
     <form method="post">
         {% csrf_token %}
         <div class="flex gap-2">

mnemosyne/library/templates/library/library_detail.html

@@ -12,10 +12,10 @@
         <h1 class="text-3xl font-bold">{{ library.name }}</h1>
         <div class="flex flex-wrap gap-2 mt-2">
             <div class="badge badge-primary">{{ library.library_type }}</div>
-            {% if library.workspace_id %}
+            {% if library.managed_by_display %}
             <div class="badge badge-warning gap-1"
-                 title="Workspace {{ library.workspace_id }}">
-                Daedalus workspace
+                 {% if library.workspace_id %}title="Workspace {{ library.workspace_id }}"{% endif %}>
+                Managed by {{ library.managed_by_display }}
             </div>
             {% endif %}
         </div>
@@ -25,26 +25,29 @@
     </div>
     <div class="flex gap-2">
         <a href="{% url 'library:library-edit' uid=library.uid %}" class="btn btn-sm btn-outline">Edit</a>
-        {% if library.workspace_id %}
-        <button type="button" class="btn btn-sm btn-error btn-outline" disabled
-                title="This library is managed by Daedalus. Delete it from the Daedalus workspace, not here.">
-            Delete
-        </button>
-        {% else %}
         <a href="{% url 'library:library-delete' uid=library.uid %}" class="btn btn-sm btn-error btn-outline">Delete</a>
-        {% endif %}
     </div>
 </div>
 
-{% if library.workspace_id %}
+{% if library.managed_by_display %}
 <div class="alert alert-warning mb-6">
     <div>
-        <div class="font-semibold">Managed by Daedalus</div>
+        <div class="font-semibold">Managed by {{ library.managed_by_display }}</div>
         <div class="text-sm opacity-80">
-            This library was created for Daedalus workspace
+            {% if library.workspace_id %}
+            This library was created for workspace
             <code class="font-mono">{{ library.workspace_id }}</code>.
-            Items here are owned by the workspace; deleting the workspace in
-            Daedalus will remove this library. Do not delete it manually.
+            Normally you manage it from {{ library.managed_by_display }}.
+            Deleting it here removes its embedded content from Mnemosyne, but
+            the source files still live in {{ library.managed_by_display }} —
+            it will be recreated and re-embedded on the next sync.
+            Use Delete to clear an orphaned library that is blocking workspace
+            re-registration.
+            {% else %}
+            Content in this library is pushed by
+            {{ library.managed_by_display }}. Edits made here may be
+            overwritten or re-created on its next sync.
+            {% endif %}
         </div>
     </div>
 </div>

mnemosyne/library/templates/library/library_list.html

@@ -15,6 +15,18 @@
     </div>
 </div>
 
+<form method="get" class="mb-4 flex flex-wrap gap-3 items-end">
+    <div class="form-control">
+        <label class="label"><span class="label-text">Scope</span></label>
+        <select name="scope" class="select select-bordered select-sm">
+            <option value="all"       {% if scope == "all" %}selected{% endif %}>All libraries</option>
+            <option value="unmanaged" {% if scope == "unmanaged" %}selected{% endif %}>Unmanaged only</option>
+            <option value="managed"   {% if scope == "managed" %}selected{% endif %}>App-managed only</option>
+        </select>
+    </div>
+    <button type="submit" class="btn btn-sm btn-outline">Filter</button>
+</form>
+
 {% if error %}
 <div class="alert alert-warning mb-4">
     <span>{{ error }}</span>
@@ -33,9 +45,9 @@
             </h2>
             <div class="flex flex-wrap gap-1">
                 <div class="badge badge-outline">{{ lib.library_type }}</div>
-                {% if lib.workspace_id %}
-                <div class="badge badge-warning gap-1" title="Managed by Daedalus workspace {{ lib.workspace_id }} — do not delete from Mnemosyne.">
-                    Daedalus workspace
+                {% if lib.managed_by_display %}
+                <div class="badge badge-warning gap-1" title="Managed by {{ lib.managed_by_display }}{% if lib.workspace_id %} (workspace {{ lib.workspace_id }}){% endif %} — do not delete from Mnemosyne.">
+                    Managed by {{ lib.managed_by_display }}
                 </div>
                 {% endif %}
             </div>
@@ -53,8 +65,12 @@
 {% else %}
     {% if not error %}
     <div class="text-center py-12 opacity-60">
+        {% if scope == "all" %}
         <p class="text-lg">No libraries yet.</p>
         <p class="mt-2">Create your first library to get started.</p>
+        {% else %}
+        <p class="text-lg">No libraries match this filter.</p>
+        {% endif %}
     </div>
     {% endif %}
 {% endif %}

mnemosyne/library/tests/test_content_types.py

@@ -21,6 +21,7 @@ class LibraryTypeDefaultsTests(TestCase):
         "film",
         "art",
         "journal",
+        "email",
         "business",
         "finance",
     }

mnemosyne/library/tests/test_managed_by.py

@@ -0,0 +1,179 @@
+"""Tests for the per-app ``managed_by`` concept.
+
+Covers the pure helpers (``infer_legacy_manager``,
+``Library.managed_by_display``), the token-derived stamping and
+duplicate-name rejection on the plain create endpoint (Neo4j stubbed
+via ``sys.modules``, same style as ``test_views.py``), and the
+``WorkspaceStatusSerializer`` surface. Cypher-touching paths are
+covered by the manual end-to-end plan, not these unit tests.
+"""
+
+from __future__ import annotations
+
+from types import SimpleNamespace
+from unittest.mock import patch
+
+from django.contrib.auth import get_user_model
+from django.test import TestCase
+from rest_framework.test import APIClient
+
+from library.api.serializers import WorkspaceStatusSerializer
+from library.models import Library, infer_legacy_manager
+from mcp_server.models import UserToken
+
+User = get_user_model()
+
+
+class InferLegacyManagerTests(TestCase):
+    """Truth table for the pre-``managed_by`` inference."""
+
+    def test_null_workspace_is_unmanaged(self):
+        self.assertIsNone(infer_legacy_manager(None))
+        self.assertIsNone(infer_legacy_manager(""))
+
+    def test_kairos_mail_prefix_is_kairos(self):
+        self.assertEqual(
+            infer_legacy_manager("kairos-mail-abc123-7"), "Kairos"
+        )
+
+    def test_other_workspace_is_daedalus(self):
+        self.assertEqual(
+            infer_legacy_manager("2f9c4a1e-uuid-ish"), "Daedalus"
+        )
+
+
+class ManagedByDisplayTests(TestCase):
+    """``managed_by_display`` on in-memory (unsaved) Library nodes."""
+
+    def test_stamped_label_wins(self):
+        lib = Library(name="x", managed_by="Spelunker")
+        self.assertEqual(lib.managed_by_display, "Spelunker")
+
+    def test_stamped_label_wins_over_inference(self):
+        lib = Library(
+            name="x", managed_by="My Token", workspace_id="kairos-mail-a-1"
+        )
+        self.assertEqual(lib.managed_by_display, "My Token")
+
+    def test_legacy_workspace_falls_back_to_inference(self):
+        lib = Library(name="x", workspace_id="ws-uuid")
+        self.assertEqual(lib.managed_by_display, "Daedalus")
+
+    def test_unmanaged_is_empty_string(self):
+        lib = Library(name="x")
+        self.assertEqual(lib.managed_by_display, "")
+
+
+class _FakeLibrary:
+    """Stand-in for the neomodel Library on the plain create endpoint."""
+
+    class DoesNotExist(Exception):
+        pass
+
+    existing = None          # what nodes.get(name=...) returns
+    instances = []           # constructor kwargs, in order
+
+    def __init__(self, **kwargs):
+        type(self).instances.append(kwargs)
+        self.__dict__.update(kwargs)
+        self.uid = "lib-new"
+        self.workspace_id = None
+        self.created_at = None
+
+    def save(self):
+        return self
+
+    class _Nodes:
+        @staticmethod
+        def get(**kwargs):
+            if _FakeLibrary.existing is None:
+                raise _FakeLibrary.DoesNotExist()
+            return _FakeLibrary.existing
+
+    nodes = _Nodes()
+
+
+class LibraryCreateStampingTests(TestCase):
+    """POST /library/api/libraries/ stamps ``managed_by`` and rejects dupes."""
+
+    def setUp(self):
+        self.user = User.objects.create_user(username="op", password="pw")
+        self.client = APIClient()
+        _FakeLibrary.existing = None
+        _FakeLibrary.instances = []
+
+    def _post(self, token=None):
+        self.client.force_authenticate(user=self.user, token=token)
+        with patch.dict(
+            "sys.modules",
+            {"library.models": SimpleNamespace(Library=_FakeLibrary)},
+        ):
+            return self.client.post(
+                "/library/api/libraries/",
+                {"name": "Docs", "library_type": "technical"},
+                format="json",
+            )
+
+    def test_token_create_stamps_token_name(self):
+        response = self._post(token=UserToken(name="Spelunker"))
+
+        self.assertEqual(response.status_code, 201)
+        self.assertEqual(_FakeLibrary.instances[0]["managed_by"], "Spelunker")
+        self.assertEqual(response.json()["managed_by"], "Spelunker")
+
+    def test_session_create_leaves_managed_by_null(self):
+        response = self._post(token=None)
+
+        self.assertEqual(response.status_code, 201)
+        self.assertIsNone(_FakeLibrary.instances[0]["managed_by"])
+
+    def test_duplicate_name_returns_409_name_conflict(self):
+        _FakeLibrary.existing = SimpleNamespace(
+            uid="lib-old", managed_by_display="Daedalus"
+        )
+        response = self._post(token=UserToken(name="Spelunker"))
+
+        self.assertEqual(response.status_code, 409)
+        body = response.json()
+        self.assertEqual(body["code"], "name_conflict")
+        self.assertIn("Docs", body["detail"])
+        self.assertEqual(body["uid"], "lib-old")
+        self.assertEqual(body["managed_by"], "Daedalus")
+        self.assertEqual(_FakeLibrary.instances, [])
+
+    def test_duplicate_of_unmanaged_reports_null_manager(self):
+        _FakeLibrary.existing = SimpleNamespace(
+            uid="lib-old", managed_by_display=""
+        )
+        response = self._post(token=None)
+
+        self.assertEqual(response.status_code, 409)
+        self.assertIsNone(response.json()["managed_by"])
+
+
+class WorkspaceStatusSerializerManagedByTests(TestCase):
+    """The workspace status payload carries ``managed_by`` (nullable)."""
+
+    BASE = {
+        "workspace_id": "ws_a",
+        "library_uid": "lib_1",
+        "name": "W",
+        "library_type": "technical",
+        "description": "",
+        "item_count": 0,
+        "chunk_count": 0,
+        "created_at": "2026-01-01T00:00:00Z",
+    }
+
+    def test_managed_by_value_round_trips(self):
+        s = WorkspaceStatusSerializer(data={**self.BASE, "managed_by": "Daedalus"})
+        self.assertTrue(s.is_valid(), s.errors)
+        self.assertEqual(s.validated_data["managed_by"], "Daedalus")
+
+    def test_managed_by_null_accepted(self):
+        s = WorkspaceStatusSerializer(data={**self.BASE, "managed_by": None})
+        self.assertTrue(s.is_valid(), s.errors)
+
+    def test_managed_by_absent_accepted(self):
+        s = WorkspaceStatusSerializer(data=self.BASE)
+        self.assertTrue(s.is_valid(), s.errors)

mnemosyne/library/tests/test_svg_raster.py

@@ -0,0 +1,195 @@
+"""
+Tests for SVG rasterization in the ingest pipeline.
+
+SVG is vector XML: Pillow cannot decode it and the vision stage cannot send it
+as a data URI, so it is rendered to PNG at parse time. The cases that matter
+are the ones that fail *silently* — Write notes stack their pages inside one
+document, and rendering that document whole yields a plausible-looking PNG that
+is either blank or an illegible tall strip.
+"""
+
+import io
+import os
+import tempfile
+
+from django.test import TestCase
+from PIL import Image
+
+from library.services.parsers import (
+    IMAGE_EXTENSIONS,
+    DocumentParser,
+)
+from library.services.svg_raster import (
+    SvgRenderError,
+    render_svg_pages,
+    split_svg_pages,
+)
+
+# Geometry copied from a real Write note; the page element is identical across
+# both root formats, which is what makes splitting format-agnostic.
+PAGE_WIDTH = 1094
+PAGE_HEIGHT = 1654
+PAGE_PITCH = 1674  # page height + inter-page gap
+
+
+def write_document(pages: int, root_size: bool = False) -> bytes:
+    """
+    Build a Write-style document.
+
+    :param pages: Number of stacked pages.
+    :param root_size: Emit width/height on the root <svg>. False models
+        pre-eeab021 files (the permanent majority), True models newer saves.
+    """
+    root_attrs = ""
+    if root_size:
+        total = 10 + pages * PAGE_PITCH
+        root_attrs = f' width="{PAGE_WIDTH + 20}" height="{total}"'
+
+    body = "".join(
+        f'<svg class="write-page" x="10" y="{10 + i * PAGE_PITCH}" '
+        f'width="{PAGE_WIDTH}px" height="{PAGE_HEIGHT}px" '
+        f'xmlns="http://www.w3.org/2000/svg">'
+        f'<path d="M 100 {100 + i * 40} L {600 + i * 120} {700 + i * 40}" '
+        f'stroke="#000000" stroke-width="12" fill="none"/></svg>'
+        for i in range(pages)
+    )
+    return (
+        f'<svg id="write-document"{root_attrs} '
+        f'xmlns="http://www.w3.org/2000/svg" '
+        f'xmlns:xlink="http://www.w3.org/1999/xlink">'
+        f'<rect id="write-doc-background" width="100%" height="100%" fill="#808080"/>'
+        f'<defs id="write-defs"><style>.write-flat-pen{{fill:none}}</style></defs>'
+        f"{body}</svg>"
+    ).encode()
+
+
+GENERIC_SVG = (
+    b'<svg xmlns="http://www.w3.org/2000/svg" width="400" height="200" '
+    b'viewBox="0 0 400 200">'
+    b'<path d="M 20 20 L 380 180" stroke="#000" stroke-width="10"/></svg>'
+)
+
+
+def ink_fraction(png: bytes) -> float:
+    """Fraction of non-white pixels — the blank-render canary."""
+    grey = Image.open(io.BytesIO(png)).convert("L")
+    histogram = grey.histogram()
+    return sum(histogram[:200]) / sum(histogram)
+
+
+class SvgSplitTests(TestCase):
+    """Splitting a Write document into per-page SVGs."""
+
+    def test_splits_one_document_per_page(self):
+        for pages in (1, 2, 5):
+            for root_size in (False, True):
+                with self.subTest(pages=pages, root_size=root_size):
+                    document = write_document(pages, root_size=root_size)
+                    self.assertEqual(len(split_svg_pages(document)), pages)
+
+    def test_both_root_formats_split_identically(self):
+        """Root width/height (Write eeab021) must not change the outcome.
+
+        Existing notes are never rewritten, so both formats persist
+        indefinitely and have to render the same.
+        """
+        without = split_svg_pages(write_document(3, root_size=False))
+        with_size = split_svg_pages(write_document(3, root_size=True))
+        self.assertEqual(len(without), len(with_size))
+        self.assertEqual(len(without), 3)
+
+    def test_generic_svg_is_a_single_page(self):
+        self.assertEqual(len(split_svg_pages(GENERIC_SVG)), 1)
+
+    def test_unsized_svg_is_rejected_rather_than_guessed(self):
+        unsized = b'<svg xmlns="http://www.w3.org/2000/svg"><rect/></svg>'
+        with self.assertRaises(SvgRenderError):
+            split_svg_pages(unsized)
+
+    def test_script_inside_defs_does_not_desync_the_split(self):
+        """Regression: a non-greedy <defs>...</defs> regex mis-parses these."""
+        document = write_document(2).replace(
+            b'<defs id="write-defs">',
+            b'<defs id="write-defs"><script><float value="770" /></script>',
+        )
+        self.assertEqual(len(split_svg_pages(document)), 2)
+
+    def test_unquoted_root_attributes_are_repaired(self):
+        """Write can emit ``width=auto``, which is not valid XML.
+
+        A malformation inside the root tag defeats recovery differently from
+        one in the body: libxml2 abandons the whole document and returns a
+        bare root, so every page silently disappears.
+        """
+        document = write_document(2).replace(
+            b'<svg id="write-document"',
+            b'<svg width=auto height=auto id="write-document"',
+        )
+        self.assertEqual(len(split_svg_pages(document)), 2)
+
+
+class SvgRenderTests(TestCase):
+    """Rasterizing pages to PNG."""
+
+    def test_renders_one_png_per_page(self):
+        pages = render_svg_pages(write_document(3))
+        self.assertEqual(len(pages), 3)
+        for png, width, height in pages:
+            self.assertEqual(Image.open(io.BytesIO(png)).format, "PNG")
+            self.assertEqual(max(width, height), 1568)
+
+    def test_rendered_pages_are_not_blank(self):
+        """The pre-patch trap: a whole-document render emits ruling, no ink."""
+        for root_size in (False, True):
+            with self.subTest(root_size=root_size):
+                for png, _, _ in render_svg_pages(
+                    write_document(3, root_size=root_size)
+                ):
+                    self.assertGreater(ink_fraction(png), 0.001)
+
+    def test_pages_are_page_shaped_not_a_stacked_strip(self):
+        """The post-patch trap: root dimensions span every stacked page.
+
+        Rendering that whole gives one tall strip which, once capped, squashes
+        a 5-page note to ~209px wide.
+        """
+        expected = PAGE_HEIGHT / PAGE_WIDTH
+        for root_size in (False, True):
+            with self.subTest(root_size=root_size):
+                for _, width, height in render_svg_pages(
+                    write_document(5, root_size=root_size)
+                ):
+                    self.assertAlmostEqual(height / width, expected, delta=0.05)
+
+    def test_page_cap_is_respected(self):
+        self.assertEqual(len(render_svg_pages(write_document(8), max_pages=5)), 5)
+
+
+class SvgParserIntegrationTests(TestCase):
+    """The parser dispatch — SVG must not reach the Pillow image path."""
+
+    def setUp(self):
+        self.parser = DocumentParser()
+
+    def test_svg_is_not_in_image_extensions(self):
+        # It was, and PIL.Image.open cannot decode SVG, so ingest always failed.
+        self.assertNotIn("svg", IMAGE_EXTENSIONS)
+
+    def test_parse_multipage_svg_yields_one_image_per_page(self):
+        with tempfile.NamedTemporaryFile(suffix=".svg", delete=False) as f:
+            f.write(write_document(3))
+            f.flush()
+            path = f.name
+        try:
+            result = self.parser.parse(path, "svg")
+        finally:
+            os.unlink(path)
+
+        self.assertEqual(len(result.images), 3)
+        self.assertEqual(result.metadata["page_count"], 3)
+        self.assertEqual(result.text_blocks, [])
+        for index, image in enumerate(result.images):
+            # PNG, not svg — the vision stage needs raster for its data URI.
+            self.assertEqual(image.ext, "png")
+            self.assertEqual(image.source_page, index)
+            self.assertGreater(ink_fraction(image.data), 0.001)

mnemosyne/library/tests/test_views.py

@@ -0,0 +1,110 @@
+"""Tests for the library CRUD HTML views.
+
+Currently covers ``library_list``'s app-managed scope filter. The view
+loads every ``Library`` node from Neo4j and narrows it in Python by a
+``scope`` GET param (``all`` / ``unmanaged`` / ``managed``, with legacy
+``global`` / ``daedalus`` aliases). These tests stub out Neo4j entirely —
+patching ``neo4j_available`` and injecting a fake ``Library`` class via
+``sys.modules`` — so they assert on the filtering the view does and the
+context it renders, not on real graph behaviour. Mirrors the mocking
+style in ``test_search_views_admin_scope.py``.
+"""
+
+from __future__ import annotations
+
+from types import SimpleNamespace
+from unittest.mock import MagicMock, patch
+
+from django.contrib.auth import get_user_model
+from django.test import TestCase
+from django.urls import reverse
+
+User = get_user_model()
+
+
+def _lib(name, managed_by_display):
+    return SimpleNamespace(
+        uid=f"uid-{name}",
+        name=name,
+        library_type="technical",
+        description="",
+        workspace_id=None,
+        managed_by_display=managed_by_display,
+    )
+
+
+class LibraryListScopeFilterTests(TestCase):
+    """Cover the ``scope`` filter branches of ``library_list``."""
+
+    def setUp(self):
+        self.user = User.objects.create_user(
+            username="op", email="op@example.com", password="pw"
+        )
+        self.client.force_login(self.user)
+        self.url = reverse("library:library-list")
+        self.managed = _lib("Docs", "Spelunker")
+        self.unmanaged = _lib("Notes", "")
+
+    def _fake_library_cls(self):
+        """Return a Library stub whose ``nodes.order_by`` yields two libraries."""
+        fake_nodes = MagicMock()
+        fake_nodes.order_by.return_value = [self.managed, self.unmanaged]
+        return SimpleNamespace(nodes=fake_nodes)
+
+    def _get(self, **params):
+        with patch("library.views.neo4j_available", return_value=True), \
+             patch.dict(
+                 "sys.modules",
+                 {"library.models": SimpleNamespace(Library=self._fake_library_cls())},
+             ):
+            return self.client.get(self.url, params)
+
+    def test_default_scope_is_all_and_returns_everything(self):
+        response = self._get()
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.context["scope"], "all")
+        self.assertEqual(
+            list(response.context["libraries"]), [self.managed, self.unmanaged]
+        )
+
+    def test_managed_scope_keeps_only_managed(self):
+        response = self._get(scope="managed")
+
+        self.assertEqual(response.context["scope"], "managed")
+        self.assertEqual(list(response.context["libraries"]), [self.managed])
+
+    def test_unmanaged_scope_keeps_only_unmanaged(self):
+        response = self._get(scope="unmanaged")
+
+        self.assertEqual(response.context["scope"], "unmanaged")
+        self.assertEqual(list(response.context["libraries"]), [self.unmanaged])
+
+    def test_legacy_daedalus_scope_aliases_to_managed(self):
+        response = self._get(scope="daedalus")
+
+        self.assertEqual(response.context["scope"], "managed")
+        self.assertEqual(list(response.context["libraries"]), [self.managed])
+
+    def test_legacy_global_scope_aliases_to_unmanaged(self):
+        response = self._get(scope="global")
+
+        self.assertEqual(response.context["scope"], "unmanaged")
+        self.assertEqual(list(response.context["libraries"]), [self.unmanaged])
+
+    def test_unknown_scope_does_not_filter(self):
+        """An unexpected scope value degrades to the unfiltered list."""
+        response = self._get(scope="bogus")
+
+        self.assertEqual(response.context["scope"], "bogus")
+        self.assertEqual(
+            list(response.context["libraries"]), [self.managed, self.unmanaged]
+        )
+
+    def test_neo4j_unavailable_sets_error_and_empty_list(self):
+        with patch("library.views.neo4j_available", return_value=False):
+            response = self.client.get(self.url)
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(list(response.context["libraries"]), [])
+        self.assertEqual(response.context["error"], "Neo4j is not available.")

mnemosyne/library/views.py

@@ -31,14 +31,23 @@ logger = logging.getLogger(__name__)
 
 @login_required
 def library_list(request):
-    """List all libraries."""
+    """List libraries, optionally filtered by app-managed scope."""
+    scope = request.GET.get("scope", "all")
+    # Legacy bookmark values from before managed_by existed.
+    scope = {"daedalus": "managed", "global": "unmanaged"}.get(scope, scope)
     libraries = []
     error = None
     if neo4j_available():
         try:
             from .models import Library
 
-            libraries = Library.nodes.order_by("name")
+            libraries = list(Library.nodes.order_by("name"))
+            # managed_by_display covers legacy workspace libraries that
+            # predate the managed_by property, so filter in Python.
+            if scope == "managed":
+                libraries = [l for l in libraries if l.managed_by_display]
+            elif scope == "unmanaged":
+                libraries = [l for l in libraries if not l.managed_by_display]
         except Exception as e:
             error = f"Could not connect to Neo4j: {e}"
             logger.error(error)
@@ -47,7 +56,7 @@ def library_list(request):
     return render(
         request,
         "library/library_list.html",
-        {"libraries": libraries, "error": error},
+        {"libraries": libraries, "error": error, "scope": scope},
     )
 
 
@@ -319,20 +328,20 @@ def library_delete(request, uid):
         messages.error(request, f"Library not found: {e}")
         return redirect("library:library-list")
 
-    # Daedalus owns the lifecycle of workspace-scoped libraries — they can
-    # only be deleted via DELETE /library/api/workspaces/{workspace_id}/.
-    # Block the human delete path so a stray click can't desync state.
-    if lib.workspace_id:
-        messages.error(
-            request,
-            f'"{lib.name}" is managed by Daedalus workspace '
-            f"{lib.workspace_id}. Delete it from Daedalus, not here.",
-        )
-        return redirect("library:library-detail", uid=uid)
-
+    # Daedalus owns the lifecycle of workspace-scoped libraries. Deleting one
+    # here is allowed but discouraged: the confirm page warns that Daedalus
+    # still holds the source content and will recreate + re-embed it on the
+    # next sync. The risk is low (no data loss — only re-embedding cost), and
+    # this is the supported escape hatch for clearing an orphaned Library that
+    # blocks workspace re-registration.
     if request.method == "POST":
         name = lib.name
-        lib.delete()
+        # Use the shared cascade so child nodes (Collections/Items/Chunks/
+        # Images) and orphan Concepts are removed too — a bare lib.delete()
+        # would leak them.
+        from .services.library_delete import delete_library_cascade
+
+        delete_library_cascade(lib)
         messages.success(request, f'Library "{name}" deleted.')
         return redirect("library:library-list")
     return render(request, "library/library_confirm_delete.html", {"library": lib})

mnemosyne/mcp_server/drf_auth.py

@@ -26,6 +26,20 @@ from rest_framework import authentication, exceptions
 from .auth import MCPAuthError, resolve_mcp_user
 
 
+def request_token_label(request):
+    """Name of the ``UserToken`` authenticating this request, or None.
+
+    Session-authenticated requests (``request.auth`` is None) and blank
+    token names return None — the caller treats both as "no managing app".
+    """
+    from .models import UserToken
+
+    token = getattr(request, "auth", None)
+    if isinstance(token, UserToken):
+        return token.name.strip() or None
+    return None
+
+
 class UserTokenAuthentication(authentication.BaseAuthentication):
     """Authenticate DRF requests with a ``UserToken`` bearer."""
 

mnemosyne/mcp_server/forms.py

@@ -57,6 +57,12 @@ class UserTokenCreateForm(forms.Form):
             "class": "input input-bordered w-full",
             "placeholder": "e.g. Claude Desktop, CI script",
         }),
+        help_text=(
+            "A friendly label so you can identify this token later. It also "
+            "labels any library the token creates (shown as “Managed by "
+            "<name>”) — for an app integration, use the app's name, e.g. "
+            "Daedalus, Kairos, Spelunker."
+        ),
     )
     expires_at = forms.DateTimeField(
         required=False,

mnemosyne/mcp_server/templates/mcp_server/tokens/create.html

@@ -21,7 +21,7 @@
                     </label>
                     {{ form.name }}
                     <label class="label">
-                        <span class="label-text-alt opacity-60">A friendly label so you can identify this token later (e.g. “Claude Desktop”).</span>
+                        <span class="label-text-alt opacity-60">{{ form.name.help_text }}</span>
                     </label>
                 </div>
                 <div class="form-control mt-4">

mnemosyne/mcp_server/tests/test_drf_auth.py

@@ -105,6 +105,44 @@ class UserTokenAuthenticationTest(TestCase):
         resp = self._get(f"Bearer {self.plaintext} extra")
         self.assertEqual(resp.status_code, status.HTTP_401_UNAUTHORIZED)
 
+    def test_request_token_label_reads_token_name(self):
+        from types import SimpleNamespace
+
+        from mcp_server.drf_auth import request_token_label
+
+        token = UserToken(name="  Spelunker  ")
+        self.assertEqual(
+            request_token_label(SimpleNamespace(auth=token)), "Spelunker"
+        )
+
+    def test_request_token_label_none_for_session(self):
+        from types import SimpleNamespace
+
+        from mcp_server.drf_auth import request_token_label
+
+        self.assertIsNone(request_token_label(SimpleNamespace(auth=None)))
+        # A request object with no auth attribute at all (plain Django).
+        self.assertIsNone(request_token_label(SimpleNamespace()))
+
+    def test_request_token_label_none_for_blank_name(self):
+        from types import SimpleNamespace
+
+        from mcp_server.drf_auth import request_token_label
+
+        self.assertIsNone(
+            request_token_label(SimpleNamespace(auth=UserToken(name="   ")))
+        )
+
+    def test_request_token_label_none_for_foreign_auth_object(self):
+        from types import SimpleNamespace
+
+        from mcp_server.drf_auth import request_token_label
+
+        # e.g. a JWT dict from another auth class — not a UserToken.
+        self.assertIsNone(
+            request_token_label(SimpleNamespace(auth={"iss": "daedalus"}))
+        )
+
     def test_request_auth_stashes_token(self):
         # The auth class returns (user, token); DRF places the token on
         # request.auth. Re-use a UserToken-aware endpoint to verify.

mnemosyne/mnemosyne/settings.py

@@ -23,8 +23,9 @@ env = environ.Env(
     DEBUG=(bool, True),
 )
 
-# Read .env file if it exists
-environ.Env.read_env(BASE_DIR / ".env")
+# Read .env file if it exists. Lives at the repo root (one level above the
+# Django project package), shared with the docker-compose stack.
+environ.Env.read_env(BASE_DIR.parent / ".env")
 
 # --- Security ---
 SECRET_KEY = env("SECRET_KEY", default="django-insecure-change-me-in-production")
@@ -267,6 +268,15 @@ SPELUNKER_S3_REGION_NAME = env("SPELUNKER_S3_REGION_NAME", default="us-east-1")
 SPELUNKER_S3_USE_SSL = env.bool("SPELUNKER_S3_USE_SSL", default=False)
 SPELUNKER_S3_VERIFY = env.bool("SPELUNKER_S3_VERIFY", default=True)
 
+# Kairos renders synced mail to text documents in its own bucket.
+KAIROS_S3_ENDPOINT_URL = env("KAIROS_S3_ENDPOINT_URL", default="")
+KAIROS_S3_ACCESS_KEY_ID = env("KAIROS_S3_ACCESS_KEY_ID", default="")
+KAIROS_S3_SECRET_ACCESS_KEY = env("KAIROS_S3_SECRET_ACCESS_KEY", default="")
+KAIROS_S3_BUCKET_NAME = env("KAIROS_S3_BUCKET_NAME", default="kairos")
+KAIROS_S3_REGION_NAME = env("KAIROS_S3_REGION_NAME", default="us-east-1")
+KAIROS_S3_USE_SSL = env.bool("KAIROS_S3_USE_SSL", default=False)
+KAIROS_S3_VERIFY = env.bool("KAIROS_S3_VERIFY", default=True)
+
 # Registry keyed by the ingest `source` field. Unknown/blank sources fall
 # back to "daedalus" for backwards compatibility.
 SOURCE_S3_BUCKETS = {
@@ -288,6 +298,15 @@ SOURCE_S3_BUCKETS = {
         "use_ssl": SPELUNKER_S3_USE_SSL,
         "verify": SPELUNKER_S3_VERIFY,
     },
+    "kairos-mail": {
+        "endpoint_url": KAIROS_S3_ENDPOINT_URL,
+        "access_key_id": KAIROS_S3_ACCESS_KEY_ID,
+        "secret_access_key": KAIROS_S3_SECRET_ACCESS_KEY,
+        "bucket_name": KAIROS_S3_BUCKET_NAME,
+        "region_name": KAIROS_S3_REGION_NAME,
+        "use_ssl": KAIROS_S3_USE_SSL,
+        "verify": KAIROS_S3_VERIFY,
+    },
 }
 
 # --- Celery / RabbitMQ ---

pyproject.toml

@@ -30,6 +30,9 @@ dependencies = [
     "semantic-text-splitter>=0.20,<1.0",
     "tokenizers>=0.20,<1.0",
     "Pillow>=10.0,<12.0",
+    # SVG page splitting — needs recover=True for Write notes that emit
+    # unescaped attribute content and aren't well-formed XML
+    "lxml>=5.3,<7",
     "requests>=2.31,<3.0",
     # Phase 5: MCP Server
     "fastmcp>=2.0,<3.0",