feat(scripts): retrieval eval for embedding models on German documents

Companion to ai-eval.sh, for the half of the stack that was never measured. The
chat model was chosen from a four-way benchmark; the embedder was taken from a
first recommendation and deployed unexamined. It now backs Paperless's RAG over
a German archive, where retrieval quality decides which past documents the
classifier gets to see.

It cannot work like ai-eval.sh. A chat answer can be read and judged; an
embedding is 1024 opaque numbers. What is measurable is whether the right
document comes back first, so this embeds a labelled German corpus and scores
real questions against it: recall@1, recall@3, MRR, and the cosine margin
between the correct document and the best wrong one — a model that is right by
0.002 is guessing, one that is right by 0.15 has actually separated them.

The corpus is built to be failable. Two Allianz policies, four documents that
are all Rechnungen, a car insurance and a vehicle registration sharing a number
plate. Queries are paraphrases rather than keyword matches — "Wann muss mein
Auto zum TUEV" against a document that only ever says Hauptuntersuchung. An easy
corpus would score every model 100% and rank nothing.

Baseline for the deployed model:

  RESULT model=qwen3-embedding-0.6b dim=1024 recall@1=92% recall@3=100% mrr=0.958

The single miss is the intended hard case — the car-insurance question lands on
the household policy, rank 2, margin -0.0132. The margin column also exposes
what pass/fail would hide: arbeitsvertrag is won by +0.0059, a coin flip
recorded as a hit.

Reaches llama-embed from inside the cluster by default, since that Service has
no ingress by design.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

kubernetes/apps/authentik/blueprints-configmap.yaml

@@ -877,6 +877,105 @@ data:
             kubernetes_ingress_secret_name: "authentik-outpost-tls"
             kubernetes_json_patches: null
 
+      # llama-server WebUI gate
+      #
+      # llama-server has no authentication of its own — it serves its chat UI
+      # and a full OpenAI-compatible API to anyone who can reach the port. That
+      # is why it was LAN-only until now. This gate is what makes a public
+      # hostname defensible: the outpost terminates every request, enforces the
+      # session, and only then forwards to llama-server.
+      #
+      # Same reasoning as vscode-gate, and the same passkey step-up: what sits
+      # behind the gate is entirely unprotected, so the gate is the whole of the
+      # access control rather than a second factor on top of an app login.
+      #
+      # In-cluster consumers (Home Assistant, Paperless, CI) are unaffected:
+      # they address llama-server.ai.svc.cluster.local directly and never pass
+      # through Traefik or this outpost.
+      #
+      # No group and no policy binding: any user who can authenticate gets in,
+      # as with Immich, Audiobookshelf, Home Assistant and Music Assistant. The
+      # gates that pin membership to a named user in git — vscode, esphome,
+      # zigbee2mqtt, shelly-manager, prometheus — are admin interfaces, where
+      # the allowlist is the point. A chat UI is not one of those, and deciding
+      # its membership here would put an access-control choice in a manifest
+      # instead of leaving it where the user directory belongs.
+      # ------------------------------------------------------------------
+      - id: llama-gate-provider
+        model: authentik_providers_proxy.proxyprovider
+        identifiers:
+          name: llama-gate
+        state: present
+        attrs:
+          # Both flows, mirroring the Audiobookshelf provider. Setting only
+          # authorization_flow leaves authentication on Authentik's default
+          # flow, which is what made the first login clumsy — the step-up ran
+          # on top of a password prompt instead of replacing it. With the
+          # passwordless flow named explicitly, signing in is the passkey
+          # itself.
+          #
+          # Referenced by !Find rather than !KeyOf: both flows are defined in
+          # the passkey-stepup document of this ConfigMap, and !KeyOf only
+          # resolves within one document.
+          authentication_flow: !Find [authentik_flows.flow, [slug, passkey-passwordless-authentication]]
+          authorization_flow: !Find [authentik_flows.flow, [slug, passkey-stepup-authorization]]
+          invalidation_flow: !Find [authentik_flows.flow, [slug, default-provider-invalidation-flow]]
+          mode: proxy
+          internal_host: http://llama-server.ai.svc.cluster.local:8080
+          internal_host_ssl_validation: false
+          external_host: https://llm.renner.uno
+          cookie_domain: renner.uno
+          access_token_validity: hours=24
+          refresh_token_validity: days=30
+          intercept_header_auth: true
+          # The WebUI ships `<link rel="manifest">` and registers a service
+          # worker. Per the W3C spec a manifest is fetched with
+          # `credentials: 'omit'`, so it carries no session cookie and the gate
+          # answers it with a 302 to auth.renner.uno — which turns every page
+          # load into a redirect round-trip. This is the failure that forced
+          # paperless-gate's own carve-out and that retired music-assistant-gate
+          # outright. Both paths serve no authenticated content, so letting them
+          # through anonymously costs nothing.
+          skip_path_regex: ^/(manifest\.webmanifest|sw\.js)$
+
+      - model: authentik_core.application
+        identifiers:
+          slug: llama-gate
+        state: present
+        attrs:
+          name: Local LLM (Gate)
+          slug: llama-gate
+          provider: !KeyOf llama-gate-provider
+          meta_launch_url: https://llm.renner.uno
+          meta_description: "Forward-auth gate in front of the local llama-server WebUI"
+
+      - model: authentik_outposts.outpost
+        identifiers:
+          name: llama-gate
+        state: present
+        attrs:
+          type: proxy
+          service_connection: !KeyOf k8s-conn
+          providers:
+            - !KeyOf llama-gate-provider
+          config:
+            log_level: info
+            authentik_host: "http://authentik-server.authentik.svc.cluster.local"
+            authentik_host_insecure: false
+            authentik_host_browser: "https://auth.renner.uno/"
+            refresh_interval: "minutes=5"
+            container_image: null
+            object_naming_template: "ak-outpost-%(name)s"
+            kubernetes_namespace: authentik
+            kubernetes_replicas: 1
+            kubernetes_service_type: ClusterIP
+            kubernetes_disabled_components: ["ingress"]
+            kubernetes_image_pull_secrets: []
+            kubernetes_ingress_annotations: {}
+            kubernetes_ingress_class_name: null
+            kubernetes_ingress_secret_name: "authentik-outpost-tls"
+            kubernetes_json_patches: null
+
       - model: authentik_outposts.outpost
         identifiers:
           name: authentik Embedded Outpost

kubernetes/apps/authentik/kustomization.yaml

@@ -15,6 +15,7 @@ resources:
   - alertmanager-gate-egress.yaml
   - prometheus-gate-egress.yaml
   - wordpress-gate-egress.yaml
+  - llama-gate-egress.yaml
   - outpost-servicemonitors.yaml
   - ldap-outpost-cert.yaml
   - ldap-outpost-lb.yaml

kubernetes/apps/authentik/llama-gate-egress.yaml

@@ -0,0 +1,30 @@
+---
+# Lets the llama-gate outpost reach llama-server. The cluster baseline CNP
+# (kubernetes/infrastructure/network-policies/authentik-ns.yaml) otherwise stops
+# any authentik-namespace pod from entering the ai namespace.
+#
+# The outpost is the trust boundary: it forwards to llama-server only after
+# validating the Authentik session, and the matching ingress rule in
+# ai-ns.yaml admits nothing else — so nothing in the cluster can route around
+# the gate to reach the unauthenticated API through the public hostname.
+#
+# Scoped to this outpost's pod label rather than the whole namespace, so the
+# other gates cannot reach llama-server either.
+apiVersion: cilium.io/v2
+kind: CiliumNetworkPolicy
+metadata:
+  name: llama-gate-egress
+  namespace: authentik
+spec:
+  endpointSelector:
+    matchLabels:
+      goauthentik.io/outpost-name: llama-gate
+  egress:
+    - toEndpoints:
+        - matchLabels:
+            "k8s:io.kubernetes.pod.namespace": ai
+            app.kubernetes.io/name: llama-server
+      toPorts:
+        - ports:
+            - port: "8080"
+              protocol: TCP

kubernetes/apps/llama-server/embed.yaml

@@ -44,12 +44,37 @@ spec:
             - Qwen/Qwen3-Embedding-0.6B-GGUF:Q8_0
             # Serves POST /v1/embeddings.
             - --embeddings
+            # A short, stable id for consumers. Without it the model is
+            # advertised as the whole --hf-repo string, which would end up
+            # verbatim in Paperless's config and break on the next model swap.
+            # One name only: llama-server keeps aliases in a sorted set and
+            # reports the first as the id, so a second name can steal it.
+            - --alias
+            - qwen3-embedding-0.6b
+            # Qwen3-Embedding is trained for last-token pooling. Left
+            # unspecified llama-server takes the GGUF's default, which is not
+            # visible from outside and would silently produce vectors the model
+            # was not trained to emit. Set before anything is indexed: changing
+            # pooling later invalidates every stored embedding.
+            - --pooling
+            - last
             - --n-gpu-layers
             - "99"
             - --threads
             - "2"
+            # Paperless chunks documents at 1024 tokens. The defaults are
+            # batch 2048 / ubatch 512, and with --embeddings llama-server
+            # clamps both down to 512 rather than run them mismatched — below
+            # the chunk size. Matching both to 1024 fits a whole chunk in one
+            # pass; 2048 is deliberately avoided, since that is where this
+            # Vulkan stack fails with ErrorDeviceLost.
+            - --batch-size
+            - "1024"
+            - --ubatch-size
+            - "1024"
+            # Room for a full chunk plus overhead rather than exactly one.
             - --ctx-size
-            - "2048"
+            - "4096"
             # No browser ever talks to this Service, so the WebUI is dead weight
             # and one more unauthenticated surface.
             - --no-webui

kubernetes/apps/llama-server/gate-service.yaml

@@ -0,0 +1,23 @@
+---
+# ExternalName mirror so the ai-namespace Ingress can backend to the llama-gate
+# outpost that Authentik deploys into the authentik namespace (cross-namespace
+# Service references are not supported in a standard Ingress).
+#
+# Traffic path:
+#   browser → traefik (llm.renner.uno)
+#           → ak-outpost-llama-gate (ExternalName → authentik ns)
+#           → outpost validates the session + passkey step-up
+#           → http://llama-server.ai.svc.cluster.local:8080
+#
+# In-cluster consumers skip all of this and address llama-server directly.
+apiVersion: v1
+kind: Service
+metadata:
+  name: ak-outpost-llama-gate
+  namespace: ai
+spec:
+  type: ExternalName
+  externalName: ak-outpost-llama-gate.authentik.svc.cluster.local
+  ports:
+    - port: 9000
+      targetPort: 9000

kubernetes/apps/llama-server/ingress.yaml

@@ -1,12 +1,31 @@
 ---
-# LAN-only: no `dns.renner.uno/public` label, so the Cloudflare external-dns
-# instance skips it and only the UDM instance publishes the record. The API is
-# unauthenticated, so it must not be reachable from the internet.
+# llm.renner.uno — the chat WebUI, public and behind Authentik.
+#
+# Traefik no longer reaches llama-server directly. This Ingress backends the
+# llama-gate proxy outpost (ExternalName → authentik ns), which enforces a
+# passkey step-up and forwards only after the session validates. The ai
+# CiliumNetworkPolicy is tightened so ONLY that outpost pod may reach
+# llama-server, so nothing in the cluster can route around the gate. Pattern
+# mirrors kubernetes/apps/home-assistant/vscode-ingress.yaml.
+#
+# The gate is the entire access control here: llama-server has no
+# authentication of its own and serves a full OpenAI-compatible API on the same
+# port as the UI. That is what kept this hostname LAN-only until now.
+#
+# In-cluster consumers — Home Assistant, Paperless, CI — address
+# llama-server.ai.svc.cluster.local:8080 directly and never pass through
+# Traefik or the outpost, so they need no credentials and are unaffected by the
+# gate.
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: llama-server
   namespace: ai
+  labels:
+    # Public: Cloudflare wildcard → tunnel → NetBird proxy → Traefik. The UDM
+    # external-dns instance skips anything carrying this, and LAN clients reach
+    # the same hostname through the hairpin NAT.
+    dns.renner.uno/public: "true"
   annotations:
     cert-manager.io/cluster-issuer: letsencrypt-cluster
 spec:
@@ -23,6 +42,6 @@ spec:
             pathType: Prefix
             backend:
               service:
-                name: llama-server
+                name: ak-outpost-llama-gate
                 port:
-                  number: 8080
+                  number: 9000

kubernetes/apps/llama-server/kustomization.yaml

@@ -4,4 +4,5 @@ resources:
   - pvc.yaml
   - deployment.yaml
   - embed.yaml
+  - gate-service.yaml
   - ingress.yaml

kubernetes/apps/paperless/MIGRATION-data-to-block.md

@@ -1,97 +0,0 @@
-# paperless-data: CephFS → RBD
-
-## Why
-
-`paperless-data` is `ReadWriteMany` on `ceph-filesystem`, but **only the paperless
-Deployment mounts it**. Verified 2026-08-20:
-
-```
-$ pods mounting paperless-data
-paperless-68cb8b8744-7hjb8      <- one, and only one
-
-paperless-data     ReadWriteMany  ceph-filesystem
-paperless-media    ReadWriteMany  ceph-filesystem   <- genuinely shared (ftp-scanner)
-paperless-consume  ReadWriteMany  ceph-filesystem   <- genuinely shared (ftp-scanner)
-```
-
-Its contents are single-writer state — the 50 MB Whoosh index,
-`classification_model.pickle`, `celerybeat-schedule.db`, `log/`,
-`migration_lock`, `protonmail.pem`. 75 files. Nothing else reads or writes them.
-
-It is on CephFS by default, not by requirement.
-
-## What it costs
-
-Every access goes through the MDS. Measured with **zero CI pipelines running**:
-
-```
-paperless-data client   request_load_avg 22   (all other sessions 0-1)
-MDS over 180s           4,052 client requests  = 22.5/s
-                        2,718 journal events   = 15/s
-                            2 dir commits      <- almost none: not file writes
-```
-
-So it is cap/inode churn from repeated access, not data being written. That is
-most of the constant **7-8 GB/day** written to `cephfs-metadata`, and since that
-pool is `size: 3`, roughly **21-24 GB/day** reaches the drives.
-
-`cephfs-metadata` deliberately stays at size 3. Losing it destroys the entire
-filesystem rather than the objects on one OSD, and the 275 GiB in `cephfs-data0`
-depends on it. Cutting the writes at source is correct; cutting the replication
-is not.
-
-## Sequence
-
-Staged deliberately: the PVC lands first and empty, so merging it changes
-nothing. The copy and the repoint are separate.
-
-### Phase 1 — provision (this PR)
-
-`paperless-data-block` (RWO, `ceph-block`, 10Gi) is created and mounted by
-nothing. Inert.
-
-Verify: `kubectl -n paperless get pvc paperless-data-block` → Bound.
-
-### Phase 2 — copy
-
-The Whoosh index must come across intact. Paperless *can* rebuild it
-(`document_index reindex`), but that reprocesses every document, so copying is
-both faster and less disruptive.
-
-1. Scale paperless to 0. The source must be quiescent — `celerybeat-schedule.db`
-   and the Whoosh index are both live-written, and copying them under an active
-   writer gives a torn read.
-2. Run a one-off pod that mounts BOTH PVCs and copies:
-   ```
-   cp -a /src/. /dst/
-   ```
-   The RWO target pins the pod to one node; the RWX source will follow.
-3. Verify file count and index size match:
-   ```
-   find /src -type f | wc -l   ==   find /dst -type f | wc -l
-   du -sh /src/index           ==   du -sh /dst/index
-   ```
-
-### Phase 3 — repoint
-
-Change the Deployment's `data` volume to `claimName: paperless-data-block`,
-merge, let it roll.
-
-Verify afterwards:
-- paperless starts, search returns results (proves the Whoosh index survived)
-- `ceph tell mds.cephfs-b session ls` no longer shows a busy `paperless-data`
-  client
-- `rate(ceph_pool_wr_bytes{pool_id="3"})` drops from its 7-8 GB/day baseline
-
-**Do not delete `paperless-data` until search has been confirmed working.** It is
-the rollback, and it is `prune: disabled` so Flux will not remove it.
-
-## Expected effect
-
-~7-8 GB/day off `cephfs-metadata`, so ~21-24 GB/day off the drives once
-replication is counted. Against ~432 GB/day cluster-wide that is roughly 5% —
-worth doing, but it is a correctness fix (a single-writer volume does not belong
-on a shared filesystem) more than a large win.
-
-It also removes 22 req/sec of MDS load, which benefits the workloads that
-genuinely need CephFS — Woodpecker CI workspaces share the same MDS.

kubernetes/apps/paperless/network-policy.yaml

@@ -57,6 +57,20 @@ spec:
               protocol: UDP
             - port: "53"
               protocol: TCP
+    # The cluster's own LLM, for AI suggestions and RAG embeddings. Scoped to
+    # the two pods and the one port rather than the ai namespace as a whole, so
+    # this grant cannot widen if something else is ever placed there.
+    - toEndpoints:
+        - matchLabels:
+            "k8s:io.kubernetes.pod.namespace": ai
+            app.kubernetes.io/name: llama-server
+        - matchLabels:
+            "k8s:io.kubernetes.pod.namespace": ai
+            app.kubernetes.io/name: llama-embed
+      toPorts:
+        - ports:
+            - port: "8080"
+              protocol: TCP
     # External HTTPS only — Tika model downloads, runtime image
     # fetches, etc. RFC1918 + ULA are excluded from `world` via the
     # CIDR-deny pattern. `world` covers public IPs / DNS-resolvable

kubernetes/apps/paperless/paperless.yaml

@@ -31,12 +31,14 @@ data:
   PAPERLESS_CONSUMER_DELETE_DUPLICATES: "true"
   PAPERLESS_CONSUMER_ENABLE_BARCODES: "true"
   PAPERLESS_CONSUMER_ENABLE_ASN_BARCODE: "true"
-  PAPERLESS_CONSUMER_BARCODE_SCANNER: "ZXING"
+  # No CONSUMER_BARCODE_SCANNER: zxing-cpp is the only backend, so the
+  # setting no longer exists. pyzbar and libzbar are gone from the image.
+  #
   # CephFS does not propagate inotify across nodes — files written
   # via the RWX consume PVC from a pod on a different node than
   # paperless never fire IN_CREATE in paperless's kernel. Polling
   # is the reliable backstop. See wiki: cephfs-inotify-no-cross-node-propagation.
-  PAPERLESS_CONSUMER_POLLING: "10"
+  PAPERLESS_CONSUMER_POLLING_INTERVAL: "10"
   PAPERLESS_REDIS: "redis://redis:6379"
   PAPERLESS_DBENGINE: "postgresql"
   PAPERLESS_DBHOST: "pprl-pg-rw"
@@ -44,6 +46,44 @@ data:
   PAPERLESS_TIKA_ENABLED: "1"
   PAPERLESS_TIKA_ENDPOINT: "http://tika:9998"
   PAPERLESS_TIKA_GOTENBERG_ENDPOINT: "http://gotenberg:3000"
+  # AI suggestions against the cluster's own LLM (kubernetes/apps/llama-server).
+  # Nothing leaves the cluster: both endpoints are ClusterIP Services, so
+  # document text is never sent to a third party and there is no API key to
+  # rotate — llama-server has no authentication, and the ai namespace's network
+  # policy is what restricts who may reach it.
+  #
+  # CAVEAT, and it is a real one: paperless reads these from an
+  # ApplicationConfiguration row in the database and falls back to the
+  # environment only when that row is empty. A value set in the admin UI
+  # therefore overrides this ConfigMap silently. Configure AI in ONE place —
+  # here — and leave those fields untouched in the UI.
+  PAPERLESS_AI_ENABLED: "true"
+  PAPERLESS_AI_LLM_BACKEND: "openai-like"
+  PAPERLESS_AI_LLM_ENDPOINT: "http://llama-server.ai.svc.cluster.local:8080/v1"
+  # Must match --alias in kubernetes/apps/llama-server/deployment.yaml. The
+  # server ignores the field on the wire, but paperless sends it and the value
+  # is what appears in its logs.
+  PAPERLESS_AI_LLM_MODEL: "qwen3.6-35b-a3b"
+  # ClusterIP addresses are private, and paperless blocks non-public endpoints
+  # unless this is set. Default is already true; explicit because the whole
+  # integration silently stops working if it ever flips.
+  PAPERLESS_AI_LLM_ALLOW_INTERNAL_ENDPOINTS: "true"
+  # Under llama-server's own 16384, leaving room for the response.
+  PAPERLESS_AI_LLM_CONTEXT_SIZE: "12288"
+  # The 120s default is too tight at ~11 tok/s: a classification is roughly
+  # 2-4k prompt tokens plus a second round trip for localisation.
+  PAPERLESS_AI_LLM_REQUEST_TIMEOUT: "300"
+  # Matched against Django's settings.LANGUAGES, so the region is required —
+  # "de" alone does not resolve. Without it the model returns German tags but
+  # English document types, which was reproducible against this endpoint.
+  PAPERLESS_AI_LLM_OUTPUT_LANGUAGE: "de-de"
+  # RAG embeddings from llama-embed. Its Qwen3-Embedding covers 100+ languages,
+  # where paperless's default all-MiniLM-L6-v2 is documented as suited to
+  # primarily English archives — the better fit for a German corpus.
+  PAPERLESS_AI_LLM_EMBEDDING_BACKEND: "openai-like"
+  PAPERLESS_AI_LLM_EMBEDDING_ENDPOINT: "http://llama-embed.ai.svc.cluster.local:8080/v1"
+  PAPERLESS_AI_LLM_EMBEDDING_MODEL: "qwen3-embedding-0.6b"
+  PAPERLESS_AI_LLM_EMBEDDING_CHUNK_SIZE: "1024"
 ---
 apiVersion: apps/v1
 kind: Deployment
@@ -56,6 +96,13 @@ metadata:
     # Reloader restarts paperless when paperless-secrets changes (e.g. after a
     # secret-key rotation). See kubernetes/infrastructure/openbao/rotation/paperless.yaml.
     secret.reloader.stakater.com/reload: paperless-secrets
+    # And when paperless-config changes. The ConfigMap is consumed with
+    # envFrom, and Kubernetes does not restart a pod when a ConfigMap it reads
+    # that way is updated — the running container keeps the environment it
+    # started with. Without this, a settings change applies cleanly in git and
+    # in the cluster while the application never sees it, which is how the AI
+    # settings landed with no effect at all.
+    configmap.reloader.stakater.com/reload: paperless-config
 spec:
   replicas: 1
   strategy:
@@ -120,7 +167,7 @@ spec:
               drop: ["ALL"]
       containers:
         - name: paperless
-          image: ghcr.io/paperless-ngx/paperless-ngx:2.20.15 # {"$imagepolicy": "flux-system:paperless-ngx"}
+          image: ghcr.io/paperless-ngx/paperless-ngx:3.1.2 # {"$imagepolicy": "flux-system:paperless-ngx"}
           ports:
             - name: http
               containerPort: 8000
@@ -172,6 +219,25 @@ spec:
           # Safe against ALLOWED_HOSTS: the kubelet sends the pod IP as Host,
           # and PAPERLESS_ALLOWED_HOSTS is "*". Narrowing that value later
           # means giving these probes an explicit Host header.
+
+          # The container does not serve until its init sequence finishes:
+          # s6 makes svc-webserver depend on init-migrations and
+          # init-search-index. On the first 3.x start those are the SHA256
+          # checksum backfill, which opens and reads every original and every
+          # archive file, and a full Tantivy index build, since the Whoosh
+          # index cannot be converted. Both scale with the corpus.
+          #
+          # startupProbe holds liveness and readiness off until the webserver
+          # answers, giving that boot 30 * 20s = 10 minutes. Without it the
+          # 120s liveness delay plus three 30s periods kills the pod 210s in,
+          # part-way through a migration, and the next boot starts over.
+          startupProbe:
+            httpGet:
+              path: /accounts/login/
+              port: http
+            periodSeconds: 20
+            timeoutSeconds: 5
+            failureThreshold: 30
           livenessProbe:
             httpGet:
               path: /accounts/login/
@@ -220,22 +286,16 @@ spec:
             seccompProfile:
               type: RuntimeDefault
       volumes:
-        # paperless-data-block (RWO, ceph-block), NOT paperless-data
-        # (RWX, ceph-filesystem). Only this Deployment ever mounted the volume,
-        # and its contents are single-writer state — the Whoosh index,
-        # classification model, celerybeat schedule, logs. Being on CephFS meant
-        # every access went through the MDS: 22 requests/sec sustained with zero
-        # CI running, ~15 journal events/sec against 2 directory commits per
-        # 180s, i.e. cap/inode churn rather than file writes. That was most of
-        # the constant 7-8 GB/day on cephfs-metadata, and that pool is size 3.
+        # `data` is RWO on ceph-block, not RWX on ceph-filesystem. Only this
+        # Deployment mounts it and its contents are single-writer state — the
+        # search index, classification model, celerybeat schedule, logs. On
+        # CephFS every access went through the MDS: 22 requests/sec sustained
+        # with zero CI running, ~15 journal events/sec against 2 directory
+        # commits per 180s, i.e. cap/inode churn rather than file writes. That
+        # was most of the constant 7-8 GB/day on cephfs-metadata, a size 3 pool.
         #
         # `consume` and `media` below STAY on CephFS: the ftp-scanner writes to
         # those from another node, so they genuinely need RWX.
-        #
-        # paperless-data is retained (prune: disabled) as the rollback. Do not
-        # delete it until search has been confirmed working — that is what
-        # proves the Whoosh index survived the copy, not merely that paperless
-        # starts. Migration record: MIGRATION-data-to-block.md.
         - name: data
           persistentVolumeClaim:
             claimName: paperless-data-block

kubernetes/apps/paperless/pvcs.yaml

@@ -3,33 +3,18 @@
 # (e.g. when the seed initContainer or the Garage migration creds are
 # removed once we're done with the migration phase). Velero's
 # bootstrap-restore then owns their contents.
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: paperless-data
-  namespace: paperless
-  annotations:
-    kustomize.toolkit.fluxcd.io/prune: disabled
-spec:
-  accessModes:
-    - ReadWriteMany
-  storageClassName: ceph-filesystem
-  resources:
-    requests:
-      storage: 10Gi
----
-# Replacement for paperless-data, on RBD instead of CephFS.
+
+# paperless's single-writer state, on RBD rather than CephFS.
 #
-# WHY: paperless-data is declared ReadWriteMany on ceph-filesystem, but only ONE
-# pod ever mounts it — the paperless Deployment itself. Its contents are all
-# single-writer state: the 50 MB Whoosh index, classification_model.pickle,
-# celerybeat-schedule.db, logs, migration_lock. Nothing shares it. Only `consume`
-# and `media` genuinely need RWX, because the FTP scanner writes to those from a
-# different node.
+# WHY RWO: only ONE pod mounts it — the paperless Deployment itself. Its
+# contents are all single-writer state: the Tantivy search index,
+# classification_model.pickle, celerybeat-schedule.db, logs, migration_lock.
+# Nothing shares it. Only `consume` and `media` genuinely need RWX, because the
+# FTP scanner writes to those from a different node.
 #
-# COST OF LEAVING IT: every access goes through the MDS. Measured 2026-08-20 with
-# zero CI running, this volume's client was doing 22 MDS requests/sec sustained,
-# and the MDS logged ~15 journal events/sec against only 2 directory commits per
+# WHY NOT CEPHFS: every access goes through the MDS. With zero CI running, this
+# volume's client sustained 22 MDS requests/sec, and the MDS logged ~15 journal
+# events/sec against only 2 directory commits per
 # 180s — i.e. cap and inode churn from repeated access, not file writes. That is
 # most of the constant 7-8 GB/day written to cephfs-metadata, which is a size 3
 # pool, so ~21-24 GB/day actually hits the drives.
@@ -38,10 +23,6 @@ spec:
 # the metadata pool destroys the whole filesystem, not just the objects on one
 # OSD, so the 275 GiB in cephfs-data0 rides on it. Reducing the writes at source
 # is the right fix; reducing the replication is not.
-#
-# MIGRATION: this PVC is created EMPTY and nothing mounts it yet. The data copy
-# and the deployment repoint are a separate, staged step — see
-# MIGRATION-data-to-block.md. Merging this alone is inert.
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:

kubernetes/apps/whisper/deployment.yaml

@@ -18,7 +18,7 @@ spec:
     spec:
       containers:
         - name: whisper
-          image: rhasspy/wyoming-whisper:3.6.0 # {"$imagepolicy": "flux-system:wyoming-whisper"}
+          image: rhasspy/wyoming-whisper:3.7.0 # {"$imagepolicy": "flux-system:wyoming-whisper"}
           args:
             - --model=base-int8
             - --language=de

kubernetes/e2e-test.sh

@@ -530,24 +530,6 @@ check "alertmanager: no severity=critical alerts active" bash -c '
 # manifests were valid in each case and the endpoint still misbehaved.
 # ---------------------------------------------------------------------------
 
-# llm_chat: POST a chat completion through the ingress. Body lands in
-# /tmp/llm_body for the caller to assert against. Generous --max-time: the
-# model runs on an iGPU at ~12 tok/s, so a short answer still takes seconds.
-llm_chat() {
-    local model="$1" prompt="$2" max="${3:-64}" out body code payload
-    payload=$(jq -nc --arg m "$model" --arg p "$prompt" --argjson n "$max" \
-        '{model:$m,messages:[{role:"user",content:$p}],max_tokens:$n,temperature:0}')
-    out=$(curl -sk --resolve "llm.renner.uno:443:$LB_IP" --max-time 300 \
-          -H 'Content-Type: application/json' -d "$payload" \
-          -w $'\n__CODE__:%{http_code}' \
-          "https://llm.renner.uno/v1/chat/completions" 2>&1)
-    code=${out##*__CODE__:}
-    body=${out%$'\n'__CODE__:*}
-    printf 'code=%s body=%s\n' "$code" "${body:0:300}"
-    [[ "$code" == "200" ]] || return 1
-    printf '%s' "$body" > /tmp/llm_body
-}
-export -f llm_chat
 export LB_IP
 
 # helper_post: POST JSON from inside e2e-helper, for Services with no ingress.
@@ -571,54 +553,66 @@ helper_post() {
 }
 export -f helper_post
 
+# llm_chat: POST a chat completion to llama-server from inside the cluster.
+# It goes to the Service, not the public hostname: llm.renner.uno now answers
+# with an Authentik redirect, and the API is deliberately in-cluster only —
+# which is also how every real consumer reaches it. Result lands in
+# /tmp/helper_body.
+llm_chat() {
+    local prompt="$1" max="${2:-64}"
+    helper_post "http://llama-server.ai.svc.cluster.local:8080/v1/chat/completions" \
+        "$(jq -nc --arg p "$prompt" --argjson n "$max" \
+            '{model:"qwen3.6-35b-a3b",messages:[{role:"user",content:$p}],max_tokens:$n,temperature:0}')"
+}
+export -f llm_chat
+
 echo "=== Local AI inference ==="
 
-check "llama-server /health returns 200" \
-    http_code "https://llm.renner.uno/health" 200
+# The gate is the whole of the access control on the public hostname:
+# llama-server has no authentication and serves the API on the same port as the
+# UI. An anonymous request must be bounced to Authentik, never answered. A 200
+# here would mean the ingress is reaching llama-server directly again.
+check "public hostname is gated by authentik" \
+    bash -c 'code=$(curl -sk --resolve "llm.renner.uno:443:$LB_IP" --max-time 15 \
+                 -o /dev/null -w "%{http_code}" "https://llm.renner.uno/v1/models")
+             echo "got=$code"; [[ "$code" =~ ^(302|307|401|403)$ ]]'
 
-# The chat model is named for what it is, so a picker and a log line say which
-# model answered. `chat` stays valid alongside it as a stable handle, so a
-# consumer's config survives the next model swap.
 # Asserts the id specifically, not merely that the string appears somewhere:
 # every configured name shows up in the `aliases` array regardless of order, so
 # a substring match passes even when the picker is showing the wrong one.
 check "descriptive name is the advertised id" \
-    http_body "https://llm.renner.uno/v1/models" '"id":"qwen3.6-35b-a3b"'
+    bash -c 'helper_curl "http://llama-server.ai.svc.cluster.local:8080/v1/models" &&
+             jq -e ".data[0].id == \"qwen3.6-35b-a3b\"" /tmp/helper_body >/dev/null'
+
+# Only one name is configured. A second would be advertised alongside it and,
+# if it sorted first, would take the id — which is what a picker displays.
+check "no second name competes for the id" \
+    bash -c 'jq -e ".data[0].aliases | length == 1" /tmp/helper_body >/dev/null'
 
 # Regression: the embedding model used to share this port. It appeared in the
 # chat picker, and selecting it returned fluent nonsense ("capital capital
 # capital ...") instead of an error, because --embeddings does not refuse chat
-# completions. It now lives on a ClusterIP-only Service; if it ever reappears
-# here, it is selectable again and this must fail.
+# completions. It now lives on a separate Service; if it ever reappears here,
+# it is selectable again and this must fail.
 check "embedding model absent from chat endpoint" \
-    bash -c '! curl -sk --resolve "llm.renner.uno:443:$LB_IP" --max-time 15 \
-        "https://llm.renner.uno/v1/models" | grep -qi "embed"'
-
-check "embeddings not exposed through the ingress" \
-    http_code "https://llm.renner.uno/v1/embeddings" 501
+    bash -c '! grep -qi embed /tmp/helper_body'
 
 # Regression: with thinking enabled by default the model spent its whole token
 # budget on reasoning_content and returned an EMPTY content with
 # finish_reason "length" — a 200 response that answers nothing. Asserting on
 # the status code alone would have passed.
 check "chat completion returns non-empty content" \
-    bash -c 'llm_chat chat "Nenne die Hauptstadt von Frankreich." 64 &&
-             jq -e ".choices[0].message.content | length > 0" /tmp/llm_body >/dev/null'
+    bash -c 'llm_chat "Nenne die Hauptstadt von Frankreich." 64 &&
+             jq -e ".choices[0].message.content | length > 0" /tmp/helper_body >/dev/null'
 
 check "chat completion stops rather than truncating" \
-    bash -c 'jq -e ".choices[0].finish_reason == \"stop\"" /tmp/llm_body >/dev/null'
+    bash -c 'jq -e ".choices[0].finish_reason == \"stop\"" /tmp/helper_body >/dev/null'
 
 # Coherence, not just liveness. This is what catches a model answering from the
 # wrong weights or a numerically broken backend — llama-bench measures
 # throughput and would report excellent numbers while emitting garbage.
 check "chat answer is coherent (knows Paris)" \
-    bash -c 'jq -re ".choices[0].message.content" /tmp/llm_body | grep -qi paris'
-
-# Only one name is configured. A second would be advertised alongside it and,
-# if it sorted first, would take the id — which is what a picker displays.
-check "no second name competes for the id" \
-    bash -c 'test "$(curl -sk --resolve "llm.renner.uno:443:$LB_IP" --max-time 15 \
-        "https://llm.renner.uno/v1/models" | jq -r ".data[0].aliases | length")" = "1"'
+    bash -c 'jq -re ".choices[0].message.content" /tmp/helper_body | grep -qi paris'
 
 # Reached from the monitoring namespace, which ai-ns.yaml admits; there is no
 # ingress for this Service by design.

kubernetes/infrastructure/image-automation/paperless-ngx.yaml

@@ -7,7 +7,7 @@ spec:
   image: ghcr.io/paperless-ngx/paperless-ngx
   interval: 1h
 ---
-# Allow only patch + minor bumps within the 2.x line. A 3.0 release
+# Allow only patch + minor bumps within the 3.x line. A 4.0 release
 # requires manual policy widening — major upgrades typically need a
 # migration plan and shouldn't land via auto-merge.
 apiVersion: image.toolkit.fluxcd.io/v1
@@ -20,4 +20,4 @@ spec:
     name: paperless-ngx
   policy:
     semver:
-      range: "2.x"
+      range: "3.x"

kubernetes/infrastructure/network-policies/ai-ns.yaml

@@ -9,10 +9,31 @@ spec:
     - fromEndpoints:
         - matchLabels:
             "k8s:io.kubernetes.pod.namespace": ai
+    # Traefik is deliberately NOT admitted. llm.renner.uno is public and
+    # llama-server has no authentication of its own, so the Authentik llama-gate
+    # outpost is the only thing standing in front of it. Traefik routes the
+    # hostname to that outpost and never to llama-server, and this policy is
+    # what makes that structural rather than a matter of configuration: with no
+    # ingress rule for traefik, an Ingress that pointed straight at the Service
+    # — by accident or otherwise — simply would not connect.
     - fromEndpoints:
         - matchLabels:
-            "k8s:io.kubernetes.pod.namespace": ingress
-            app.kubernetes.io/name: traefik
+            "k8s:io.kubernetes.pod.namespace": authentik
+            goauthentik.io/outpost-name: llama-gate
+      toPorts:
+        - ports:
+            - port: "8080"
+              protocol: TCP
+    # Paperless calls both models for AI suggestions and RAG embeddings. The
+    # matching egress grant on its side is scoped to these two pods on :8080.
+    - fromEndpoints:
+        - matchLabels:
+            "k8s:io.kubernetes.pod.namespace": paperless
+            app.kubernetes.io/name: paperless
+      toPorts:
+        - ports:
+            - port: "8080"
+              protocol: TCP
     - fromEndpoints:
         - matchLabels:
             "k8s:io.kubernetes.pod.namespace": monitoring

kubernetes/infrastructure/velero/restore-test.sh

@@ -5,8 +5,9 @@
 #   1. Velero Restore reaches phase=Completed against yesterday's
 #      scheduled Backup (real artifact, not a synthetic one).
 #   2. Each restored PVC is mountable and its file count is within ±10%
-#      of the live source volume, ignoring the transient subtrees listed
-#      in volatile_paths_for().
+#      (or ±ABS_PARITY_SLACK files, whichever is wider) of the live
+#      source volume, ignoring the transient subtrees listed in
+#      volatile_paths_for().
 #
 # What this does NOT exercise:
 #   - CNPG database restore (barman-cloud, separate code path).
@@ -317,11 +318,37 @@ EOF
     count_files_in_pvc "$src_ns" "$tmp_pvc" "src-${pvc:0:40}-${RUN_ID}" "$excludes"
 }
 
-# Restored count must be within ±10% of the source's current file count.
-# That tolerance absorbs day-of drift since the backup ran without
-# letting "lost half the data" pass silently. Volatile subtrees are pruned
-# from BOTH sides — keyed off the source identity, since the PVC name is
-# preserved across the restore but the destination namespace is not.
+# Restored count must be within max(±10%, ±ABS_PARITY_SLACK files) of the
+# source's current file count. That tolerance absorbs day-of drift since
+# the backup ran without letting "lost half the data" pass silently.
+# Volatile subtrees are pruned from BOTH sides — keyed off the source
+# identity, since the PVC name is preserved across the restore but the
+# destination namespace is not.
+#
+# Why the absolute floor exists. A purely relative window is structurally
+# unable to pass a small volume: ±10% of 9 files is ±0.9, i.e. a budget of
+# ZERO files, and ±10% of 2 files is ±0.2. The 2026-09-01 run failed on
+# exactly that — audiobookshelf/libation-config source=9 restored=8 and
+# trmnl/trmnl-renderer-data source=2 restored=3, both off by one file and
+# in opposite directions, with all 12 restores at phase=Completed and the
+# other 46 checks green. Parity compares a backup taken up to ~24 h ago
+# against the live volume *now*, so a single config write on a tiny volume
+# between those two moments is expected, not a defect in the backup.
+#
+# The floor only governs volumes below ~10*ABS_PARITY_SLACK files; above
+# that the 10% window still binds, so real data loss on the volumes that
+# carry data keeps failing loudly. Two files of slack rather than one
+# because a single logical write on a config volume routinely moves more
+# than one file (an app writing a settings file plus a transient sidecar),
+# and a floor that buys exactly one month is not worth the change.
+#
+# What the floor must NOT swallow, and does not: a non-empty source that
+# restored to an *empty* volume fails unconditionally below, before any
+# tolerance is applied. The old relative-only check caught that case as a
+# side effect (delta = 1.0 > 0.10); it is now explicit so the floor cannot
+# erode it on a volume of ABS_PARITY_SLACK files or fewer.
+ABS_PARITY_SLACK=${ABS_PARITY_SLACK:-2}
+
 verify_pvc_file_count_parity() {
     local src_ns="$1" dst_ns="$2" pvc="$3"
     local restored source excludes
@@ -339,11 +366,15 @@ verify_pvc_file_count_parity() {
     if [[ "$source" -eq 0 && "$restored" -eq 0 ]]; then
         return 0
     fi
-    # Use awk to compute a 10% window without bc.
-    awk -v s="$source" -v r="$restored" 'BEGIN {
-        if (s == 0) { exit !(r == 0) }
-        delta = (r - s) / s; if (delta < 0) delta = -delta
-        exit !(delta <= 0.10)
+    # Empty on either side while the other has data: never tolerable.
+    if [[ "$source" -eq 0 || "$restored" -eq 0 ]]; then
+        return 1
+    fi
+    # Use awk to compute the window without bc.
+    awk -v s="$source" -v r="$restored" -v slack="$ABS_PARITY_SLACK" 'BEGIN {
+        delta = r - s; if (delta < 0) delta = -delta
+        tol = 0.10 * s; if (tol < slack) tol = slack
+        exit !(delta <= tol)
     }'
 }
 
@@ -492,7 +523,7 @@ EOF
         check "${src_ns}: at least one PVC was restored" false
     else
         for pvc in "${PVCS[@]}"; do
-            check "${src_ns}: PVC ${pvc} file count parity (±10%)" \
+            check "${src_ns}: PVC ${pvc} file count parity (±10% / ±${ABS_PARITY_SLACK})" \
                 verify_pvc_file_count_parity "$src_ns" "$dst_ns" "$pvc"
         done
     fi

scripts/embed-eval.sh

@@ -0,0 +1,177 @@
+#!/usr/bin/env bash
+# Retrieval evaluation for an embedding model, on German documents of the kind
+# this homelab actually files.
+#
+# Companion to scripts/ai-eval.sh, but it cannot work the same way. A chat
+# answer can be read and judged; an embedding is 1024 opaque numbers. What is
+# measurable is whether the right document comes back first, so this builds a
+# small labelled corpus, embeds it, and scores real questions against it.
+#
+# Metrics:
+#   Recall@1  the correct document ranked first — what Paperless's RAG actually
+#             feeds to the classifier
+#   Recall@3  it at least made the shortlist
+#   MRR       mean reciprocal rank, so near-misses are visible rather than
+#             collapsing to pass/fail
+#   margin    cosine gap between the correct document and the best wrong one.
+#             A model that is right by 0.002 is guessing; one that is right by
+#             0.15 has actually separated them.
+#
+# The corpus deliberately contains confusable pairs — two Allianz policies, four
+# documents that are all "Rechnungen", a car insurance and a vehicle
+# registration sharing a number plate. An easy corpus would rate everything 100%
+# and tell you nothing.
+#
+# Usage:
+#   scripts/embed-eval.sh                                    # cluster default
+#   scripts/embed-eval.sh -m some-model
+#   scripts/embed-eval.sh -e https://host/v1/embeddings -m model -k KEY
+#
+# Env equivalents: EMBED_EVAL_ENDPOINT, EMBED_EVAL_MODEL, EMBED_EVAL_KEY.
+#
+# To compare two models on our llama-embed, -m is not enough: swap --hf-repo in
+# kubernetes/apps/llama-server/embed.yaml, let it roll out, then re-run. Note
+# that changing the model also invalidates any vectors Paperless has stored, so
+# comparisons are best made before an index exists.
+#
+# Exit code is the number of queries whose correct document did not rank first.
+set -uo pipefail
+
+ENDPOINT="${EMBED_EVAL_ENDPOINT:-http://llama-embed.ai.svc.cluster.local:8080/v1/embeddings}"
+MODEL="${EMBED_EVAL_MODEL:-qwen3-embedding-0.6b}"
+APIKEY="${EMBED_EVAL_KEY:-}"
+# Run curl from inside this pod when the endpoint is a cluster-internal name.
+# llama-embed has no ingress by design, so there is nothing to reach from a
+# workstation.
+VIA_POD="${EMBED_EVAL_VIA_POD:-}"
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -e|--endpoint) ENDPOINT="$2"; shift 2 ;;
+        -m|--model)    MODEL="$2";    shift 2 ;;
+        -k|--key)      APIKEY="$2";   shift 2 ;;
+        -p|--via-pod)  VIA_POD="$2";  shift 2 ;;
+        -h|--help)     sed -n '2,34p' "$0"; exit 0 ;;
+        *) echo "unknown argument: $1 (try --help)" >&2; exit 2 ;;
+    esac
+done
+
+HERE="$(cd "$(dirname "$0")" && pwd)"
+CASES="$HERE/embed-eval"
+WORK="$(mktemp -d)"
+trap 'rm -rf "$WORK"' EXIT
+
+for f in "$CASES/corpus.jsonl" "$CASES/queries.jsonl"; do
+    [ -r "$f" ] || { echo "missing fixture: $f" >&2; exit 2; }
+done
+
+# Default to reaching the Service from a pod that is allowed to, unless the
+# caller pointed us somewhere externally reachable.
+if [ -z "$VIA_POD" ] && [ "${ENDPOINT#*svc.cluster.local}" != "$ENDPOINT" ]; then
+    VIA_POD="deploy/llama-server -n ai"
+fi
+
+# embed <text> -> the vector as a JSON array on stdout
+embed() {
+    local payload out
+    payload=$(jq -nc --arg m "$MODEL" --arg t "$1" '{model:$m,input:$t}')
+    if [ -n "$VIA_POD" ]; then
+        # stderr is kept and surfaced on failure rather than discarded: a
+        # silently swallowed kubectl or curl error is indistinguishable from a
+        # model that returned nothing.
+        # shellcheck disable=SC2086
+        out=$(kubectl exec $VIA_POD -- curl -sS -m 120 \
+              -H 'Content-Type: application/json' \
+              ${APIKEY:+-H "Authorization: Bearer $APIKEY"} \
+              -d "$payload" "$ENDPOINT" 2>"$WORK/err.txt")
+    else
+        out=$(curl -sS -m 120 -H 'Content-Type: application/json' \
+              ${APIKEY:+-H "Authorization: Bearer $APIKEY"} \
+              -d "$payload" "$ENDPOINT")
+    fi
+    printf '%s' "$out" | jq -c '.data[0].embedding // empty'
+}
+
+echo "endpoint: $ENDPOINT"
+echo "model:    $MODEL"
+[ -n "$VIA_POD" ] && echo "via pod:  $VIA_POD"
+echo ""
+
+# ---- embed the corpus ------------------------------------------------------
+DOCS=$(wc -l < "$CASES/corpus.jsonl" | tr -d ' ')
+echo "embedding $DOCS documents..."
+: > "$WORK/vecs.jsonl"
+start=$(date +%s)
+while IFS= read -r line; do
+    id=$(printf '%s' "$line" | jq -r '.id')
+    text=$(printf '%s' "$line" | jq -r '.text')
+    vec=$(embed "$text")
+    if [ -z "$vec" ]; then
+        echo "FAILED to embed '$id' — endpoint returned no vector." >&2
+        [ -s "$WORK/err.txt" ] && { echo "stderr:" >&2; cat "$WORK/err.txt" >&2; }
+        exit 2
+    fi
+    jq -nc --arg id "$id" --argjson v "$vec" '{id:$id, vec:$v}' >> "$WORK/vecs.jsonl"
+done < "$CASES/corpus.jsonl"
+elapsed=$(( $(date +%s) - start ))
+DIM=$(head -1 "$WORK/vecs.jsonl" | jq '.vec | length')
+echo "  $DOCS documents, ${DIM} dimensions, ${elapsed}s"
+echo ""
+
+# ---- score the queries -----------------------------------------------------
+# Cosine similarity in jq. The vectors llama.cpp returns are normalised, but the
+# full form costs nothing and keeps this correct against servers that do not.
+rank() { # queryvec -> "id score" lines, best first
+    jq -s -r --argjson q "$1" '
+        def dot($a; $b): reduce range(0; $a|length) as $i (0; . + ($a[$i] * $b[$i]));
+        def norm($a): (reduce ($a[]) as $x (0; . + ($x * $x))) | sqrt;
+        map({id: .id, s: (dot(.vec; $q) / ((norm(.vec) * norm($q)) + 1e-12))})
+        | sort_by(-.s)[]
+        | "\(.id) \(.s)"
+    ' "$WORK/vecs.jsonl"
+}
+
+MISS=0; TOTAL=0; HIT1=0; HIT3=0; MRRSUM=0
+printf '%-46s %-22s %5s %8s\n' QUERY EXPECTED RANK MARGIN
+printf '%s\n' "------------------------------------------------------------------------------------"
+while IFS= read -r line; do
+    q=$(printf '%s' "$line" | jq -r '.q')
+    want=$(printf '%s' "$line" | jq -r '.want')
+    qvec=$(embed "$q")
+    if [ -z "$qvec" ]; then
+        echo "FAILED to embed query: $q" >&2
+        [ -s "$WORK/err.txt" ] && { echo "stderr:" >&2; cat "$WORK/err.txt" >&2; }
+        exit 2
+    fi
+    rank "$qvec" > "$WORK/ranked.txt"
+
+    pos=$(grep -n "^$want " "$WORK/ranked.txt" | cut -d: -f1)
+    pos=${pos:-999}
+    TOTAL=$((TOTAL + 1))
+    [ "$pos" -eq 1 ] && HIT1=$((HIT1 + 1)) || MISS=$((MISS + 1))
+    [ "$pos" -le 3 ] && HIT3=$((HIT3 + 1))
+    MRRSUM=$(awk -v s="$MRRSUM" -v p="$pos" 'BEGIN{printf "%.6f", s + 1/p}')
+
+    # Margin: the correct document's score minus the best incorrect one. On a
+    # miss this is negative, which says how badly it lost.
+    want_s=$(awk -v w="$want" '$1==w{print $2; exit}' "$WORK/ranked.txt")
+    best_other=$(awk -v w="$want" '$1!=w{print $2; exit}' "$WORK/ranked.txt")
+    margin=$(awk -v a="${want_s:-0}" -v b="${best_other:-0}" 'BEGIN{printf "%+.4f", a-b}')
+
+    if [ "$pos" -eq 1 ]; then mark=" "; else mark="!"; fi
+    printf '%s%-45.45s %-22s %5s %8s\n' "$mark" "$q" "$want" "$pos" "$margin"
+    if [ "$pos" -ne 1 ]; then
+        printf '   got instead: %s\n' "$(head -1 "$WORK/ranked.txt" | cut -d' ' -f1)"
+    fi
+done < "$CASES/queries.jsonl"
+
+R1=$(awk -v h="$HIT1" -v t="$TOTAL" 'BEGIN{printf "%.0f", 100*h/t}')
+R3=$(awk -v h="$HIT3" -v t="$TOTAL" 'BEGIN{printf "%.0f", 100*h/t}')
+MRR=$(awk -v s="$MRRSUM" -v t="$TOTAL" 'BEGIN{printf "%.3f", s/t}')
+
+echo ""
+echo "========================================"
+printf '  RESULT model=%s dim=%s recall@1=%s%% recall@3=%s%% mrr=%s\n' \
+    "$MODEL" "$DIM" "$R1" "$R3" "$MRR"
+echo "========================================"
+exit "$MISS"

scripts/embed-eval/corpus.jsonl

@@ -0,0 +1,12 @@
+{"id":"stadtwerke-strom","text":"Stadtwerke Muenchen GmbH. Jahresrechnung Strom. Rechnungsnummer 4711. Abrechnungszeitraum 01.01.2025 bis 31.12.2025. Zaehlernummer 1EMH0012345678. Verbrauch 2450 kWh zum Arbeitspreis von 31,2 Cent je kWh. Grundpreis 9,90 EUR monatlich. Zu zahlender Betrag 812,40 EUR faellig am 15.02.2026."}
+{"id":"telekom-mobilfunk","text":"Telekom Deutschland GmbH. Ihre Mobilfunkrechnung fuer Januar. Kundennummer 0891234567. Rufnummer 0170 1234567. Tarif MagentaMobil M mit 20 GB Datenvolumen. Grundpreis 39,95 EUR. Verbindungen ins Ausland 4,20 EUR. Rechnungsbetrag 44,15 EUR wird per Lastschrift eingezogen."}
+{"id":"finanzamt-steuer","text":"Finanzamt Muenchen Abteilung II. Bescheid ueber Einkommensteuer und Solidaritaetszuschlag fuer 2025. Steuernummer 143/256/78901. Zu versteuerndes Einkommen 54.320 EUR. Festgesetzte Einkommensteuer 8.412 EUR. Bereits geleistete Vorauszahlungen 9.100 EUR. Erstattungsbetrag 688 EUR. Rechtsbehelfsbelehrung siehe Seite 3."}
+{"id":"allianz-hausrat","text":"Allianz Versicherungs-AG. Versicherungsschein Hausratversicherung. Policennummer HR-88231. Versicherte Wohnflaeche 96 Quadratmeter. Versicherungssumme 65.000 EUR. Eingeschlossen sind Feuer, Leitungswasser, Sturm und Einbruchdiebstahl. Fahrraddiebstahl bis 1.500 EUR mitversichert. Jahresbeitrag 214 EUR."}
+{"id":"allianz-kfz","text":"Allianz Versicherungs-AG. Beitragsrechnung Kraftfahrtversicherung. Policennummer KFZ-55190. Amtliches Kennzeichen M-AB 1234. Fahrzeug VW Golf VIII. Vollkasko mit 500 EUR Selbstbeteiligung, Teilkasko 150 EUR. Schadenfreiheitsklasse SF 12. Jahresbeitrag 638 EUR."}
+{"id":"mietvertrag","text":"Mietvertrag ueber Wohnraum. Vermieter Immobilien Wagner GbR, Mieter Konstantin Renner. Mietobjekt Dreizimmerwohnung im zweiten Obergeschoss, 78 Quadratmeter, Lindenstrasse 14. Mietbeginn 01.04.2024. Kaltmiete 1.180 EUR monatlich, Betriebskostenvorauszahlung 240 EUR. Kaution drei Nettokaltmieten."}
+{"id":"arbeitsvertrag","text":"Arbeitsvertrag zwischen der Muster Technik GmbH und dem Arbeitnehmer. Taetigkeit als Softwareentwickler ab 01.09.2024. Bruttojahresgehalt 78.000 EUR zahlbar in zwoelf Monatsraten. Woechentliche Arbeitszeit 40 Stunden. Urlaubsanspruch 30 Arbeitstage im Kalenderjahr. Probezeit sechs Monate."}
+{"id":"aok-krankenkasse","text":"AOK Bayern. Beitragsbescheid zur gesetzlichen Kranken- und Pflegeversicherung. Versichertennummer A123456789. Beitragspflichtige Einnahmen 4.500 EUR monatlich. Allgemeiner Beitragssatz 14,6 Prozent zuzueglich Zusatzbeitrag 1,7 Prozent. Pflegeversicherung 3,4 Prozent. Monatlicher Gesamtbeitrag 887,50 EUR."}
+{"id":"sparkasse-kontoauszug","text":"Stadtsparkasse Muenchen. Kontoauszug Nummer 3 zum Girokonto IBAN DE89 7015 0000 0012 3456 78. Alter Kontostand 2.340,12 EUR. Gutschrift Gehalt 4.210,00 EUR. Lastschrift Miete 1.420,00 EUR. Dauerauftrag Sparplan 300,00 EUR. Neuer Kontostand 4.830,12 EUR."}
+{"id":"amazon-bestellung","text":"Amazon EU S.a.r.l. Bestellbestaetigung. Bestellnummer 302-4455667-8899001. Artikel Logitech MX Master 3S Wireless Maus, Menge 1, Preis 89,99 EUR. Versand durch Amazon, Lieferung voraussichtlich am 04.09. Zahlungsart Kreditkarte. Rechnungsbetrag inklusive Mehrwertsteuer 89,99 EUR."}
+{"id":"handwerker-rechnung","text":"Sanitaer Bergmeister GmbH. Rechnung fuer erbrachte Leistungen. Rechnungsnummer 2026-0417. Austausch eines defekten Heizungsthermostats sowie Entlueftung von drei Heizkoerpern. Arbeitszeit 2,5 Stunden zu 68 EUR. Material 42,30 EUR. Nettobetrag 212,30 EUR, Umsatzsteuer 19 Prozent, Gesamtbetrag 252,64 EUR."}
+{"id":"kfz-zulassung","text":"Landeshauptstadt Muenchen Kreisverwaltungsreferat. Zulassungsbescheinigung Teil I. Amtliches Kennzeichen M-AB 1234. Fahrzeugklasse Personenkraftwagen. Hersteller Volkswagen, Handelsbezeichnung Golf. Erstzulassung 14.03.2022. Hubraum 1498 Kubikzentimeter, Leistung 110 kW. Naechste Hauptuntersuchung 03.2028."}

scripts/embed-eval/queries.jsonl

@@ -0,0 +1,12 @@
+{"q":"Wie hoch war mein Stromverbrauch im letzten Jahr?","want":"stadtwerke-strom","note":"paraphrase: asks about consumption, the document says Verbrauch kWh"}
+{"q":"Was kostet mein Handyvertrag monatlich?","want":"telekom-mobilfunk","note":"paraphrase: Handyvertrag vs Mobilfunkrechnung/Tarif"}
+{"q":"Bescheid vom Finanzamt ueber die Einkommensteuer","want":"finanzamt-steuer","note":"near-literal, should be easy"}
+{"q":"Welchen Versicherungsschutz habe ich fuer mein Auto?","want":"allianz-kfz","note":"HARD: two Allianz policies. Must not pick the Hausrat one."}
+{"q":"Ist mein Fahrrad gegen Diebstahl versichert?","want":"allianz-hausrat","note":"HARD: same sender as kfz, and bicycles are a detail deep in the text"}
+{"q":"Wie hoch ist die Kaltmiete meiner Wohnung?","want":"mietvertrag","note":"must beat sparkasse, which also mentions Miete as a Lastschrift"}
+{"q":"Wie viele Urlaubstage stehen mir zu?","want":"arbeitsvertrag","note":"paraphrase: Urlaubsanspruch"}
+{"q":"Was zahle ich monatlich an die Krankenkasse?","want":"aok-krankenkasse","note":"Krankenkasse vs Kranken- und Pflegeversicherung"}
+{"q":"Wie viel Geld ist auf meinem Girokonto?","want":"sparkasse-kontoauszug","note":"Kontostand"}
+{"q":"Rechnung fuer die Reparatur der Heizung","want":"handwerker-rechnung","note":"HARD: several documents are Rechnungen; must pick the Sanitaer one"}
+{"q":"Wann muss mein Auto zum TUEV?","want":"kfz-zulassung","note":"HARD: TUEV never appears; the document says Hauptuntersuchung. Pure semantics, and must not be pulled to the Kfz-Versicherung by the shared plate number."}
+{"q":"Wann wurde meine Maus geliefert?","want":"amazon-bestellung","note":"colloquial vs Bestellbestaetigung/Lieferung"}