Merge pull request #1 from noheton/claude/organize-docs-deployment-7N4v2

Reorganize documentation and consolidate deployment guides
2026-05-05 07:22:55 +02:00
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+# Instructions for Claude (and other agents)
+
+This file tells future automated runs what they need to know about this repo.
+
+## Repo conventions
+
+- **Documentation:** all docs live in `/docs/` and are numbered. Entry point is `docs/index.md`. When you add a doc, give it the next free `NN-` prefix and add a row to the index TOC.
+- **Runtime artifacts:** live in `nexa-core/` (workflows, prompts, configs, scripts). Don't put `.md` documentation in there — link from `/docs/` instead.
+- **Source-of-truth:** if a doc duplicates content from `nexa-core/config/*.md`, **delete the duplicate**. Single source of truth.
+
+## Real infrastructure (verified from screenshots, May 2026)
+
+- **Proxmox host** `nuc` at `192.168.1.20:8006` (PVE 9.1.9, kernel 6.17.13-4-pve, EFI).
+  - Hardware: **22 threads** (Intel Core Ultra 7 155H, 1 socket), **62 GiB RAM**, **1.64 TiB disk**.
+  - Steady state: ~32 GiB used (≈24 GiB of which is ZFS ARC, tunable via `zfs_arc_max`), CPU load <2.0, IO delay <0.05%.
+  - LXC 102 dns (AdGuard) — internal DNS, rewrites for `*.nuclide.systems`.
+  - LXC 103 backrest — backup orchestration.
+  - LXC 104 docker — main docker host at `192.168.1.40`, hostname `docker`, OS Debian 13. **Unprivileged**, originally provisioned from the Dockge helper-script template, but **Arcane is the active docker manager** today (Dockge is stale, slated for retirement — see [docs/12 #33](./docs/12-optimization-opportunities.md#33)). **Dozzle** is the live log viewer. Allocated: 16 CPU, 31.25 GiB RAM (25% used), 8 GiB swap, 200 GiB boot disk (47.7% used). **Storage = Ubiquiti UNAS Pro at `192.168.1.31`** (UniFi Drive 4.1.16 on UniFi OS 5.0.17, SFP+ 10 GbE, RAID 6, 19.96 TiB raw / 2.05 TiB used). NFS-exported at `/var/nfs/shared/storage`, mounted by Proxmox at `/mnt/pve/unas`, also exposed via SMB at `smb://192.168.1.31/<share>` (Mac) / `\\192.168.1.31\<share>` (Win).
+
+  **Standard pattern for docker volumes (verified via Karakeep, Q19): plain host bind-mount of `/mnt/pve/unas/services/<svc>/<vol>` from inside LXC 104.** No `driver_opts`, no CIFS, no credentials in the compose. Karakeep, Immich and the rest do exactly this. Nexa follows suit. SMB-as-docker-volume is documented as an **escape hatch only** ([docs/12 #27](./docs/12-optimization-opportunities.md#27)) for services that hit Nextcloud-style NFS issues — Nexa doesn't, so we don't use it.
+
+  **Storage-layer snapshots are NOT configured** on UNAS Pool 1 ("Click to Setup" in the UniFi Drive dashboard). All 2 TB of homelab data has no point-in-time protection at the storage layer — Backrest covers files, not "the whole pool last Tuesday". Highest-leverage fix in the homelab right now ([docs/12 #38](./docs/12-optimization-opportunities.md#38)).
+
+  **UNAS layout conventions** (homelab-wide, all docker containers follow them):
+  - **`services/<svc>/` is the general docker config store** — every container in LXC 104 binds its persistent data here. Existing tenants observed: immich, karakeep, nextcloud, ntfy, paperless-ai, pocketid, shelfmark, stremio, traccar, vaultwarden, gluetun. **Stale (retire, do not consume):** `services/siyuan/` (migrated to Obsidian), `services/open-webui/` (unused — LobeHub is the active LLM UI), and `services/dockge/` if it exists (retired in favor of Arcane). **Nexa MUST follow the same pattern: `services/nexa/{qdrant,tei-cache,graphdb,...}`.** Don't invent a parallel layout.
+  - `backup/<svc>/` — per-service backups (existing: home-assistant tars, immich pgdump, nextcloud borg). **Nexa snapshots → `backup/nexa/`.**
+  - `media/`, `code/`, `_sortMe/`, `dump/`, `test_perm` — user data, not Nexa's concern.
+  - **Before deploying any Nexa container, READ AN EXISTING STACK** in **Arcane** (e.g. `karakeep` or `immich`) to confirm the exact mount syntax in use — driver name, share path, credential injection pattern. Match it. The actual NFS export root is `/var/nfs/shared/storage`; the SMB share name is **still TBD — see Q19** in `docs/11`.
+
+**Hard-blocklist for any Nexa indexer / agent** (never read these paths or matching glob):
+  - `_sortMe/wallet/**` — contains PGP keys + bitcoin wallet files.
+  - Any path matching `*.gpg`, `*.asc`, `*.key`, `*.pem`, `id_rsa*`, `*wallet*`, `*.kdbx`, `*credentials*`, `*secret*`.
+  - The Nextcloud appdata dir (`services/nextcloud/appdata_*`) — Nextcloud-internal, not user content. Intel iGPU passthrough is *configured but currently broken* — see [docs/12 #26](./docs/12-optimization-opportunities.md#26).
+  - LXC 105 nextcloud — Nextcloud at `nc.nuclide.systems`.
+  - LXC 106 octoprint — currently *Exited*; flagged in [docs/11](./docs/11-open-questions.md#q13).
+  - LXC 108 zoraxy — reverse proxy at `192.168.1.4:8000`, TLS for `*.nuclide.systems`.
+  - VM 100 haos — Home Assistant.
+- **Already-running services on docker host** (don't redeploy):
+  - Memos `:5230`, n8n `:5678`, LiteLLM `:4000` (UI LobeHub `:3210`), Qdrant (`qdrant_scientific`), ntfy `:7998`, Karakeep (legacy alias `hoarder.nuclide.systems`), Vaultwarden `:11001`, Pocket-ID `:1411`, Immich, Audiobookshelf, Paperless-ngx, Traccar, Prowlarr, plus MCP containers (`crawl4ai-mcp`, `markitdown-mcp`, `papersearch-mcp`).
+- **Octoprint (LXC 106)** is *intentionally* powered down most of the time. Phase-5 monitoring must skip names matching `octoprint*` rather than alert on its Exited state.
+- **Obsidian vault lives inside Nextcloud** at `nc.nuclide.systems/Notizen/` (multi-device sync via Nextcloud client). Nexa accesses it via WebDAV — read-only, no filesystem mount. Ignore list: `.copilot/`, `.copilot-index/`, `.smart-env/`, `.caldav-sync/`, `assets/` (visual queue, Phase 3.2), `Templates/`, `BMO/`, `Excalidraw/`. Index target: `Notizen/**/*.md`.
+- **Nextcloud Tasks lists & calendars** (German names, may grow over time):
+  - `Persönlich` → Personal context.
+  - `DLR` → Work context (DLR is the user's employer).
+  - `Einkaufsliste` → Shopping.
+  - `Wunschliste` → Wishes.
+  Lists are discovered **by name** at runtime (Qdrant `_config` namespace caches `name → id`). Never hardcode IDs. The discovery workflow runs daily and on cache-miss; new lists added in Nextcloud are honoured automatically next refresh.
+- **Mail = Nextcloud Mail, single account `fkrebs@nucli.de`.** No separate IMAP entry. The `Waiting` folder is a manual user signal — items there are skipped from digests.
+- **Backup model is 3-2-1**: UNAS native snapshots → `s3.nuclide.systems` (warm, on-site) → encrypted off-site cold tier (provider TBD, Jottacloud is the user's candidate — see [Q20](./docs/11-open-questions.md#q20)). Always `restic`/`rclone-crypt` before upload — third-party provider sees only ciphertext. Don't propose alternative backup paths without checking docs/12 #37 first.
+- **Auth = Pocket-ID SSO is global** at the Zoraxy layer. Don't add app-level basic-auth to Nexa surfaces; UIs inherit SSO. Machine-to-machine still uses API keys / app passwords.
+- **Decided for Nexa** (don't re-litigate without user input):
+  - Vector store: **reuse `qdrant_scientific`** with collections suffixed by modality (`nexa_knowledge_text`, `nexa_knowledge_visual`).
+  - Embeddings staged: **Phase 3.1** TEI + `BAAI/bge-m3` (text-only, 1024-dim). **Phase 3.2** swap to `infinity` and add `jinaai/jina-clip-v2` (768-dim, joint text+image space). All forward-compat fields (`modality`, `media_uri`, `graph_iri`, `nexa:pendingVisualIndex`) exist from 3.1 — adding the visual collection is additive.
+  - Graph store: **Ontotext GraphDB** (SPARQL/RDF), Phase 3.4. RDF schema in docs/08 already includes `nexa:modality` / `nexa:mediaUri` / `nexa:vectorCollection` / `nexa:pendingVisualIndex`.
+  - Chat model: SAIA via LiteLLM virtual key.
+
+## When working on Nexa
+
+1. **Read `docs/index.md` first** — it's the navigator.
+2. **Open questions first.** Before writing code or workflow JSON, scan `docs/11-open-questions.md`. If your task touches an unanswered Q, **stop and ask** rather than picking a default. Append new blockers to that doc as `[ ] Q-NN`.
+3. **Optimization findings.** When you spot infrastructure improvements, add them to `docs/12-optimization-opportunities.md` as a numbered bullet — don't just mention them in commit messages.
+4. **Never inline secrets** in workflow JSON or `.env` committed to git. Use n8n credentials, LiteLLM virtual keys, or (longer term) Vaultwarden.
+5. **Keep deployment minimal.** The default answer to *"do we need a new container?"* is **no** — the existing stack covers most needs.
+
+## Branch policy
+
+- This branch is `claude/organize-docs-deployment-7N4v2`. Push only here unless told otherwise.
+- New work for an unrelated feature → new branch under `claude/<topic>`.
+
+## Quick links
+
+- [docs/index.md](./docs/index.md)
+- [docs/09-deployment.md](./docs/09-deployment.md) — most-touched file during bring-up
+- [docs/11-open-questions.md](./docs/11-open-questions.md) — read **before** assuming defaults
@@ -1 +1,17 @@
 # nexa
+
+**Neural Nexus for Information & Automation** — central nervous system for a personal IT setup.
+
+> Memos = voice & ear · n8n = reflexes · SAIA (LiteLLM) = brain · Qdrant (+ optional graph DB) = memory · Nextcloud = hands.
+
+## Start here
+
+📖 **[docs/index.md](./docs/index.md)** — TOC, reading paths, repo layout.
+
+## Repository layout
+
+```
+nexa/
+├── docs/        ← all documentation, numbered for reading order
+└── nexa-core/   ← runtime: n8n workflows, configs, prompts, scripts
+```
@@ -0,0 +1,34 @@
+# 01 — Vision & Scope
+
+## Vision
+
+Nexa is the **central nervous system** of a personal IT setup: an intelligent middleware sitting between input sources (Memos, e-mail, RSS, Karakeep, Bluesky), knowledge stores (Obsidian, Qdrant, Nextcloud) and organization tools (Nextcloud Calendar/Tasks).
+
+### Core goals
+
+- **Cognitive offload** — Nexa sorts, filters and proposes; it doesn't just store.
+- **Context separation** — clean AI-driven split between *Work* and *Personal*.
+- **Single point of interaction** — Memos is the primary surface ("voice & ear").
+- **Knowledge synergy** — link ephemeral memos to deep notes via semantic search.
+
+## Scope
+
+### In-scope
+
+- Triaging ~20 personal e-mails per day.
+- Routing tasks to the right Nextcloud list (Work vs. Personal).
+- Suggesting time-boxes in the work calendar.
+- Long-term memory in Qdrant (and optionally a graph DB).
+- Aggregating critical IT alerts (Proxmox, Backrest) into a Memos system feed.
+
+### Out-of-scope
+
+- Direct access to work IT (work mail, work servers).
+- Active document editing (metadata extraction only).
+- Replacing specialist UIs (Arcane / Dozzle / Portainer for containers).
+
+## Success metrics
+
+- **Reduced mail interaction** — less time in the mail app, more on the Nexa digest.
+- **Calendar fill-rate** — focus slots auto-blocked on the work calendar.
+- **Search latency** — old memos / Obsidian notes resurface instantly via `#nexa:ask`.
@@ -0,0 +1,62 @@
+# 02 — Roadmap & Phases
+
+Iterative build-out, value-first. Each phase is shippable on its own.
+
+## Phase 1 — The Spine (connectivity)
+
+**Focus:** datapath between Memos, n8n and SAIA.
+**Milestone:** Nexa replies on Memos and answers simple questions.
+
+- [ ] **1.1 Memos ↔ n8n bridge** — webhook ingress, content filter, comment-back.
+- [ ] **1.2 SAIA integration** — call LiteLLM proxy from n8n; chat via Memos comments.
+- [ ] **1.3 Git-sync** — periodic export of n8n workflows into this repo.
+
+## Phase 2 — Senses (input channels)
+
+**Focus:** e-mail filter and the Work-vs-Personal router.
+**Milestone:** Nexa distinguishes work tasks from personal tasks without manual tags.
+
+- [ ] **2.1 Email butler** — filter & summarize the ~20 daily personal mails.
+- [ ] **2.2 RSS morning digest** — curated daily summary in Memos. Items also enter `nexa_knowledge_text` with `source_type=rss, ttl=30d` (see [08 § Memory sources & retention](./08-graphrag-architecture.md#memory-sources--retention)).
+- [ ] **2.3 Bluesky antenna** — store liked posts as knowledge snippets.
+- [ ] **2.4 On-demand web fetch** — `#nexa:ask --web` runs a SearXNG query through `redis-searxng`, fetches top hits via `crawl4ai-mcp` + `markitdown-mcp`, embeds and answers. Pages stay in memory with `ttl=90d` so the next related question doesn't re-fetch.
+
+## Phase 3 — Memory (Qdrant & RAG)
+
+**Focus:** Qdrant + graph layer for retrieval-augmented answers.
+**Milestone:** RAG works — Nexa answers from archived notes; images captured today are queued for visual indexing later.
+
+- [ ] **3.1 Text RAG (Path A)** — TEI + `bge-m3`, single Qdrant collection `nexa_knowledge_text`. `#nexa:ask` reads it before answering. Image attachments are *recorded* as `nexa:Note` with `pendingVisualIndex` but not embedded yet.
+- [ ] **3.2 Visual collection (Path C)** — swap TEI → infinity, add `jina-clip-v2`, create `nexa_knowledge_visual`, backfill all queued image notes. RAG workflow gets a parallel branch for visual hits. See [09 § "Phase add-on: visual collection"](./09-deployment.md#phase-add-on-visual-collection-phase-32).
+- [ ] **3.3 S3 long-term archive** — Qdrant snapshots (both collections) to the S3 server. **Deferred** until [Q12 + Q20](./11-open-questions.md#backups-deferred) are decided. Until then, snapshots stay on UNAS at `backup/nexa/snapshots/qdrant/<date>/`; UNAS RAID 6 + native pool snapshots ([12/#38](./12-optimization-opportunities.md#38)) cover the data-loss scenarios that matter most for Phase 3.1.
+- [ ] **3.4 Ontotext GraphDB** — SPARQL pillar; structural queries combined with vector hits in `#nexa:ask`. See [08](./08-graphrag-architecture.md).
+
+## Phase 4 — Motor (organization & action)
+
+**Focus:** calendar integration and time-boxing.
+**Milestone:** Nexa proactively proposes morning focus slots in the work calendar.
+
+- [ ] **4.1 Nextcloud Tasks sync** — bidirectional status sync (Memos ↔ NC Tasks).
+- [ ] **4.2 Time-boxing agent** — calendar-aware slot suggestions.
+- [ ] **4.3 Karakeep curation** — automated review cycle for saved links.
+
+## Phase 5 — Daily integration (polish)
+
+**Focus:** Home Assistant Voice and monitoring.
+**Milestone:** Nexa speaks via HA-Voice and surfaces critical system states proactively.
+
+- [ ] **5.1 HA Voice** — Wake-word integration, Wyoming protocol.
+- [ ] **5.2 System monitoring** — Proxmox / Backrest alerts into the Memos system feed via ntfy.
+- [ ] **5.3 Morning digest with self-asking re-loop** — daily 07:00 digest aggregates mail + tasks + drift report. When the digest has spare capacity, Nexa re-asks ONE open question from [docs/11](./11-open-questions.md) using a backoff schedule (3 d → 7 d → 21 d → 60 d). Answers parsed from the user's reply auto-resolve the question and emit a `docs/11` diff for review (Phase 6.4 hook). See [docs/05 § #nexa:digest](./05-command-system.md).
+
+## Phase 6 — Nexa as homelab steward
+
+**Focus:** Nexa actively maintains the homelab inventory instead of being told manually.
+**Milestone:** Nexa runs a daily *drift report* — what changed, what's stale, what's missing — and turns it into actionable comments under a pinned `[STEWARD]` memo.
+
+- [ ] **6.1 Inventory sync** — Nexa polls Arcane / `docker ps` / Proxmox API on a schedule and stores the running-state snapshot in GraphDB (`nexa:Service`, `nexa:LastSeen`, `nexa:DataPath`, …).
+- [ ] **6.2 Drift detection** — diff against the documented desired state in this repo (`docs/12`, `CLAUDE.md`, the housekeeping campaign at #35–37). Emit findings as structured Memos comments: *"`open-webui` last used 38 d ago — retire?"*, *"Container `foo` has no `services/foo/` bind — schedule UNAS migration?"*.
+- [ ] **6.3 Steward commands** — `#nexa:retire <svc>` (tar to `backup/`, stop, archive the stack), `#nexa:document <svc>` (template a CLAUDE.md entry), `#nexa:wishlist-status` (which entries in [docs/13](./13-information-wishlist.md) are still needed).
+- [ ] **6.4 Self-update of docs** — when the user resolves an open question via Memos, Nexa proposes the corresponding edit to `docs/11-open-questions.md` as a PR-ready diff (the doc itself becomes a Nexa-managed surface).
+
+This phase is what turns Nexa from "an assistant that answers questions" into "an assistant that takes care of its own runtime", and it's the natural home for the cross-cutting [housekeeping campaign](./12-optimization-opportunities.md#housekeeping-campaign-cross-cutting-do-together) — most of those items become semi-automatic once 6.1–6.3 ship.
@@ -0,0 +1,64 @@
+# 03 — Architecture Overview
+
+A one-page mental model. For details follow the cross-links.
+
+## Topology
+
+```
+                         ┌────────────────┐
+   voice / typing ──────▶│     Memos      │◀──── Nexa replies as comments
+                         │  (interface)   │
+                         └───────┬────────┘
+                                 │ webhook (- [ ] / #nexa:*)
+                                 ▼
+                         ┌────────────────┐
+   IMAP / RSS / NC  ────▶│      n8n       │◀──── workflows live in
+   Karakeep / Bluesky    │  (logic)       │      ./nexa-core/n8n-workflows
+                         └───┬────────┬───┘
+                  classify ▲ │        │ ▲ retrieve
+                           │ ▼        ▼ │
+                       ┌──────────┐  ┌──────────┐
+                       │  SAIA    │  │  Qdrant  │
+                       │ LiteLLM  │  │  vector  │
+                       └──────────┘  └────┬─────┘
+                                          │
+                                          ▼
+                                     ┌──────────┐
+                                     │ GraphDB  │  Ontotext, SPARQL
+                                     │  (RDF)   │  Phase 3.4
+                                     └──────────┘
+                                 │
+                                 ▼ writes
+                  ┌──────────────────────────────┐
+                  │  Nextcloud (Tasks, Calendar, │
+                  │  Mail, Files / Obsidian)     │
+                  └──────────────────────────────┘
+```
+
+## Components
+
+| Component | Role | Where it runs (today) |
+|-----------|------|-----------------------|
+| **Memos** | Interface, voice input, webhook source | docker host LXC 104 (unprivileged, 16 CPU / 31 GiB / 200 GiB) → `memos.nuclide.systems` |
+| **n8n** | Workflow / logic engine | docker host LXC 104 → `n8n.nuclide.systems` |
+| **SAIA / LiteLLM** | Model gateway, embeddings, classification | docker host LXC 104 → `ai.nuclide.systems` (LiteLLM internal :4000) |
+| **Qdrant** | Vector memory (semantic recall) | docker host LXC 104 — reuse `qdrant_scientific`. Collections: `nexa_knowledge_text` (Phase 3.1, 1024-dim) and `nexa_knowledge_visual` (Phase 3.2, 768-dim) |
+| **Ontotext GraphDB** | Structural memory via SPARQL (Phase 3.4) | not yet deployed; see [09-deployment](./09-deployment.md#phase-add-on-ontotext-graphdb-phase-34) |
+| **TEI** (HF text-embeddings-inference) | Self-hosted text embeddings, `BAAI/bge-m3`, Phase 3.1 | docker host LXC 104, CPU only — swapped for `infinity` in Phase 3.2 to add `jina-clip-v2` |
+| **Nextcloud** | Tasks, calendar, mail, files | dedicated LXC 105 → `nc.nuclide.systems` |
+| **ntfy** | Push channel for system alerts | docker host → `ntfy.nuclide.systems` |
+| **Backrest** | Backup orchestration | LXC 103 |
+| **Zoraxy** | Reverse proxy + TLS | LXC 108 (`192.168.1.4:8000`) |
+| **AdGuard DNS** | Internal name resolution | LXC 102 |
+| **Home Assistant** | Voice + house automation | VM 100 (HAOS) |
+
+## Two-pillar memory
+
+- **Qdrant** answers *"what is similar / relevant?"* (cosine search over embeddings).
+- **Ontotext GraphDB** answers *"who, what depends on what, how is it structured?"* (SPARQL over RDF).
+
+Both pillars are queried in parallel for `#nexa:ask` and merged before SAIA generates the final answer. See [08 — GraphRAG architecture](./08-graphrag-architecture.md).
+
+## Dual-context routing
+
+Every input is classified `work` or `personal` before any side effect (task creation, calendar write). See [04 — Integration matrix](./04-integration-matrix.md) and [06 — Classification logic](./06-classification-logic.md).
@@ -1,4 +1,4 @@
-# 🔗 Nexa Integrations-Matrix (V2)
+# 04 — Integrations-Matrix

 Diese Matrix definiert die logische Trennung zwischen privaten und beruflichen Datenströmen sowie die Anbindung der Infrastruktur.

@@ -10,17 +10,15 @@ Nexa muss strikt zwischen zwei Kontexten unterscheiden, da die Datenquellen vari
 ### A. Bereich: ARBEIT (Work)
 * **Sichtbarkeit:** Eingeschränkt (kein Zugriff auf Arbeits-E-Mails oder Firmen-Server).
 * **Datenquellen:**
-    * Separate Nextcloud Task-Liste (`Work_Tasks`).
-    * Separater Nextcloud Kalender (`Work_Calendar`).
+    * Nextcloud Task-Liste **`DLR`** (sowie der gleichnamige Kalender).
    * Memos mit Tag `#work` oder semantischer Erkennung.
 * **Nexa-Fokus:** Timeblocking, Fokus-Zeiten, Vorbereitung von Meetings basierend auf Obsidian-Notizen.

 ### B. Bereich: PRIVAT (Personal)
 * **Sichtbarkeit:** Vollständig.
 * **Datenquellen:**
-    * Nextcloud Task-Liste (`Personal_Tasks`).
-    * Haupt-Kalender.
-    * E-Mails (IMAP - 20 Mails/Tag).
+    * Nextcloud Task-Liste **`Persönlich`** und gleichnamiger Kalender.
+    * Nextcloud Mail (`fkrebs@nucli.de`, einziges Konto). Ordner `Waiting` ist ein manuelles Signal — Mails dort werden vom Digest ausgeschlossen.
    * Bluesky, RSS, Karakeep.
 * **Nexa-Fokus:** Automatisierung des Alltags, Kuratierung von Wissen, E-Mail-Management.

@@ -59,8 +57,10 @@ Nexa muss strikt zwischen zwei Kontexten unterscheiden, da die Datenquellen vari
 * Wichtige private Termine werden in den privaten Kalender extrahiert.
 * Newsletter landen als Zusammenfassung in Memos.

-### Wissens-Management (Obsidian & Qdrant)
-* Obsidian-Notizen (Arbeit & Privat) werden in Qdrant indiziert.
+### Wissens-Management (Obsidian via Nextcloud & Qdrant)
+* Der Obsidian-Vault liegt im Nextcloud-Ordner `Notizen/` (Multi-Device-Sync via Nextcloud-Client). Nexa liest **read-only über WebDAV** (`/remote.php/dav/files/<user>/Notizen/`) — kein Mount, kein zweiter Sync-Mechanismus.
+* Markdown-Dateien (`Notizen/**/*.md`) werden in Qdrant (`nexa_knowledge_text`) indiziert; Bilder unter `assets/` landen im Phase-3.2-Visual-Queue (siehe [docs/11/Q4](./11-open-questions.md)).
+* Plugin-Internals (`.copilot/`, `.smart-env/`, `.caldav-sync/`, `Templates/`, `BMO/`, `Excalidraw/`) sind explizit von der Indizierung ausgeschlossen.
 * Nexa nutzt dieses Wissen, um Arbeits-Tasks besser zu beschreiben, auch wenn sie keinen Zugriff auf die Arbeits-E-Mails hat.

 ---
@@ -0,0 +1,176 @@
+# 05 — Command System (`#nexa:*`)
+
+Nexa "hört" auf folgende Kommandos in Memos-Kommentaren oder als Memo-Inhalt mit Hashtag:
+
+## 🔧 Konfigurations-Kommandos
+
+### #nexa:config
+- **Beschreibung**: Triggert Autodiscovery aller Services (Nextcloud Listen/Kalender, Qdrant Collections, LiteLLM-Modelle, Mail-Konto).
+- **Läuft auch automatisch**:
+  - Täglich (cron in n8n) — neue Listen / Kalender werden ohne manuelles Eingreifen aufgenommen.
+  - Bei Cache-Miss — wenn ein Workflow eine Liste/ID nicht mehr findet, läuft Discovery einmal, dann Retry.
+- **Antwort**: Postet Report mit den aktuellen Konfigurationen als Memos-Kommentar.
+- **Speichert**: Konfiguration in der Qdrant `_config` Namespace (nicht in `.env`).
+
+```
+#nexa:config
+```
+
+**Beispiel-Response:**
+```
+✅ Autodiscovery abgeschlossen (2026-05-04T23:59):
+- Nextcloud Listen: Persönlich (id=14), DLR (id=dlr-1), Einkaufsliste (id=…), Wunschliste (id=…)
+- Nextcloud Kalender: Persönlich, DLR, Einkaufsliste, Wunschliste
+- Mail-Konto: fkrebs@nucli.de (Posteingang, Archiv, Junk, Waiting)
+- Qdrant Collection: nexa_knowledge_text (1024 dims, Cosine, 0 Punkte)
+- LiteLLM-Modelle: nexa-chat, nexa-embed
+```
+
+### #nexa:status
+- **Beschreibung**: Zeigt den aktuellen System-Status
+- **Antwort**: Uptime, verbundene Systeme, Memory-Stats
+
+```
+#nexa:status
+```
+
+### #nexa:sync-obsidian
+- **Beschreibung**: Triggert sofortige Synchronisierung mit Obsidian Vault
+- **Optional Parameter**: `--vault=/path/to/vault` oder `--force` für Neuindexierung
+
+```
+#nexa:sync-obsidian --force
+```
+
+## 📊 Memory & RAG Kommandos
+
+### #nexa:ask [question]
+- **Beschreibung**: Semantische Suche in Qdrant (RAG) basierend auf Obsidian + Memos
+- **Antwort**: Top-3 Treffer mit Quellen
+
+```
+#nexa:ask Wie implementierten wir das JWT-Middleware-Pattern?
+```
+
+### #nexa:learn [topic]
+- **Beschreibung**: Explizit neue Information in Qdrant speichern (mit Tags)
+- **Optional**: `--tag=architecture` `--source=obsidian/notes/arch.md` `--permanent` (überschreibt Default-TTL)
+
+```
+#nexa:learn Das Routing-Schema unterscheidet Work vs. Personal via SAIA-Kontext-Analyse --tag=architecture
+```
+
+### #nexa:forget [query-or-iri]
+- **Beschreibung**: Löscht passende Einträge aus Qdrant + GraphDB sofort.
+- **Beispiel**: `#nexa:forget --source=rss --older-than=14d`
+
+### #nexa:retain [source_type] [days]
+- **Beschreibung**: Setzt die Default-Retention für einen Source-Type (Default-Werte siehe [08 § Memory sources & retention](./08-graphrag-architecture.md#memory-sources--retention)).
+
+### #nexa:ask [question] [--web]
+- **Beschreibung**: Semantische Suche in Qdrant. Mit `--web` erweitert Nexa die Suche um eine SearXNG-Abfrage (`redis-searxng`), holt die Top-3 Treffer via `crawl4ai-mcp` + `markitdown-mcp`, embedded sie und nutzt das gemeinsame Material für die Antwort. Geholte Seiten bleiben 90 Tage im Speicher (TTL siehe oben).
+
+## 🎯 Workflow-Kommandos
+
+### #nexa:route-test [text]
+- **Beschreibung**: Testet die Klassifizierung (Work/Personal) ohne Task zu erstellen
+
+```
+#nexa:route-test Muss morgen die Präsentation für den Client fertigstellen
+```
+
+**Response:**
+```
+💬 Klassifizierung (Test-Mode):
+- Kontext: WORK
+- Vertrauen: 0.95
+- Begründung: "Client-Präsentation → professioneller Kontext"
+```
+
+### #nexa:email-digest
+- **Beschreibung**: Triggert sofortige Email-Zusammenfassung (sonst tägl. 7 Uhr)
+
+```
+#nexa:email-digest
+```
+
+### #nexa:digest
+- **Beschreibung**: Tägliches Morgen-Digest. Läuft automatisch (07:00). Inhalt:
+  1. Kurze Mail-Zusammenfassung (siehe `#nexa:email-digest`).
+  2. Anstehende Tasks heute (DLR + Persönlich, nach Urgency).
+  3. Drift-Report aus Phase 6 (sobald aktiv).
+  4. **Re-ask Block** — siehe unten. Maximal 1 offene Frage pro Digest, nur wenn der Digest sonst kurz genug ist.
+
+#### Re-ask der offenen Fragen (`docs/11-open-questions.md`)
+Nexa führt im GraphDB pro offener Frage `nexa:askedCount`, `nexa:lastAskedAt`, `nexa:nextAskAt`. Backoff-Schema:
+
+| Mal | Wartezeit bis zur nächsten Frage |
+|-----|----------------------------------|
+| 1 → 2 | 3 Tage |
+| 2 → 3 | 7 Tage |
+| 3 → 4 | 21 Tage |
+| ≥ 5  | 60 Tage |
+
+Im Morgen-Digest wird **eine** offene Frage angehängt — und zwar nur wenn:
+- Der Digest sonst < 800 Zeichen lang wäre (Capacity-Guard, damit es nicht nervt).
+- `nextAskAt <= today`.
+- Bevorzugt die Frage mit dem **kleinsten** `askedCount` (zuerst neue Fragen, alte selten).
+
+Antwortet der User direkt unter dem Digest-Memo, parst Nexa die Antwort, markiert die Frage in `docs/11` als resolved (Phase 6.4 — Self-update of docs) und committet einen Diff zur Review.
+
+### #nexa:remind <question-id>
+- Manuelles Triggern einer Re-Ask, ignoriert Backoff. Nützlich für Rückfragen mitten im Tag.
+
+### #nexa:answered <question-id> <text>
+- Beantwortet eine offene Frage explizit. Setzt `resolved` im GraphDB und schlägt einen `docs/11`-Diff vor.
+
+## 🔐 Admin-Kommandos
+
+### #nexa:reset-config
+- **Beschreibung**: Löscht gespeicherte Konfiguration, triggert neuen Autodiscovery
+- **Warnung**: Alle benutzerdefinierten Settings werden vergessen
+
+```
+#nexa:reset-config
+```
+
+### #nexa:export-state
+- **Beschreibung**: Exportiert aktuellen State als JSON (für Backups)
+
+```
+#nexa:export-state
+```
+
+---
+
+## 📝 Implementierung in n8n
+
+Ein **Command Parser** läuft immer mit:
+
+1. **Memos Webhook** empfängt alle Memos
+2. **Regex Check**: Sucht nach `#nexa:command`
+3. **Router**: Versendet an entsprechenden n8n-Workflow
+4. **Antwort**: Postet Reply als Kommentar/Edit
+
+**Command Parser Regex:**
+```
+^#nexa:(\w+)(?:\s+([^\n]*?))?(?:$|\s*--)
+```
+
+Extrahiert: `[command, parameters]`
+
+---
+
+## 🎛️ Dynamische Konfigurationsspeicherung
+
+Statt .env zu editieren:
+
+1. **First Run**: `#nexa:config` speichert zu lokalen Metadata
+2. **Speich-Ziel**: 
+   - **Primary**: Qdrant Metadata (als `_config` Namespace)
+   - **Fallback**: `nexa-core/config/runtime_config.json` (gitignored)
+   - **Notfall**: .env (nur initial)
+
+3. **Reload-Logik**: Bei jedem Workflow-Start werden Settings aus Qdrant geladen
+
+Das macht Nexa vollständig selbstständig nach dem initialem Setup!
@@ -1,4 +1,4 @@
-# Nexa Klassifizierungs-Logik
+# 06 — Klassifizierungs-Logik

 Dieser Fragebogen dient der Feinabstimmung von SAIA, um Tasks korrekt zu routen.

@@ -0,0 +1,26 @@
+# 07 — Workflow Spec: Phase-2 Task-Router
+
+## 1. Trigger
+* **Typ:** Webhook (Memos)
+* **Filter:** `payload.content` enthält `- [ ]` ODER `#todo`.
+
+## 2. Intelligence Node (SAIA)
+* **Prompt:** "Analysiere folgende Notiz. Gib als JSON zurück: `{ "context": "work" | "personal" | "shopping" | "wishes", "summary": "string", "urgency": 1-5 }`."
+* **Kontext-Zufuhr:** Lade die letzten 5 Obsidian-Projekttitel aus Qdrant als Referenz hoch.
+
+## 3. List Resolver (vor dem Switch)
+* Lese den Cache `nexa._config.lists` aus Qdrant: `{ "Persönlich": <id>, "DLR": <id>, "Einkaufsliste": <id>, "Wunschliste": <id>, discovered_at: <ts> }`.
+* Bei Cache-Miss oder 404 vom nachfolgenden Create-Task → triggere `#nexa:config` (Discovery), update den Cache, retry **einmal**.
+
+## 4. Switch Node (4-Wege)
+* **Route 1:** `context == "work"` → Nextcloud Create Task auf Liste `DLR`.
+* **Route 2:** `context == "personal"` → Nextcloud Create Task auf Liste `Persönlich`.
+* **Route 3:** `context == "shopping"` → Nextcloud Create Task auf Liste `Einkaufsliste`.
+* **Route 4:** `context == "wishes"` → Nextcloud Create Task auf Liste `Wunschliste`.
+* **Default (Konfidenz < 0.7):** `Persönlich` (siehe [06](./06-classification-logic.md)).
+
+## 5. Feedback Loop
+* Poste die Task-ID und den gewählten Kontext als Kommentar unter das Original-Memo.
+
+## 6. Listen-Diskoverability
+Listennamen sind nicht hardgecodet — die Resolver-Step liest sie aus dem Runtime-Config-Cache. Wenn der User in Nextcloud eine neue Liste anlegt (z. B. `Reisen`), erscheint sie nach dem nächsten geplanten `#nexa:config`-Lauf (täglich) automatisch als Routing-Ziel — die System-Prompt der Intelligence Node wird zusammen mit den verfügbaren Listen versorgt, sodass SAIA neue Kontexte vorschlagen kann.
@@ -0,0 +1,286 @@
+# 08 — GraphRAG: Structural Knowledge & Relations
+
+Decision: graph layer = **Ontotext GraphDB** with **SPARQL** (resolved in [11/Q1](./11-open-questions.md)).
+Rationale: SPARQL + RDF lets Nexa's memory be browsed and queried with the same standard tooling that's used for any open-data corpus, and it leaves the door open for SHACL / OWL reasoning later.
+
+---
+
+## Two-pillar memory
+
+| Pillar | Question it answers | Backed by |
+|--------|---------------------|-----------|
+| **Qdrant** (vectors) | *"What is similar / relevant?"* | Cosine search over embeddings |
+| **GraphDB** (RDF) | *"What is connected? What depends on what? Who is involved?"* | SPARQL over a typed graph |
+
+Both pillars are queried in parallel for `#nexa:ask` and merged before SAIA generates the final answer.
+
+---
+
+## RDF schema
+
+Compact, opinionated. One namespace, one ontology file, no v2/v3 inheritance pain.
+
+```turtle
+@prefix nexa: <https://nuclide.systems/nexa/ontology#> .
+@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
+@prefix prov: <http://www.w3.org/ns/prov#> .
+
+# Classes
+nexa:Project       a rdfs:Class .
+nexa:Task          a rdfs:Class .
+nexa:Person        a rdfs:Class .
+nexa:Technology    a rdfs:Class .
+nexa:Topic         a rdfs:Class .
+nexa:Note          a rdfs:Class .          # Memos / Obsidian / mail digests
+nexa:File          a rdfs:Class .
+
+# Properties
+nexa:owns          a rdf:Property ;  rdfs:domain nexa:Person     ;  rdfs:range nexa:Task .
+nexa:uses          a rdf:Property ;  rdfs:domain nexa:Task       ;  rdfs:range nexa:Technology .
+nexa:dependsOn     a rdf:Property ;  rdfs:domain nexa:Task       ;  rdfs:range nexa:Task .
+nexa:childOf       a rdf:Property ;  rdfs:domain nexa:Task       ;  rdfs:range nexa:Project .
+nexa:mentions      a rdf:Property ;  rdfs:domain nexa:Note       ;  rdfs:range nexa:Topic .
+nexa:scheduledFor  a rdf:Property ;  rdfs:domain nexa:Task       ;  rdfs:range xsd:dateTime .
+
+# Datatype properties
+nexa:status        a rdf:Property ; rdfs:range xsd:string .   # "needs-action" | "in-progress" | "done"
+nexa:context       a rdf:Property ; rdfs:range xsd:string .   # "work" | "personal"
+nexa:urgency       a rdf:Property ; rdfs:range xsd:integer .  # 1–5
+nexa:contentHash   a rdf:Property ; rdfs:range xsd:string .   # for de-dup
+
+# Cross-pillar / multimodality
+nexa:modality              a rdf:Property ; rdfs:range xsd:string .   # "text" | "image"
+nexa:mediaUri              a rdf:Property ; rdfs:range xsd:anyURI .   # memos://… , nextcloud://… , obsidian://…
+nexa:vectorCollection      a rdf:Property ; rdfs:range xsd:string .   # "nexa_knowledge_text" | "nexa_knowledge_visual"
+nexa:vectorId              a rdf:Property ; rdfs:range xsd:string .   # Qdrant point ID
+nexa:pendingVisualIndex    a rdf:Property ; rdfs:range xsd:boolean .  # set true on image notes until Phase 3.2 backfills them
+```
+
+`nexa:vectorId` + `nexa:vectorCollection` together are the **bridge** between graph and vector store. A SPARQL hit can trigger a vector lookup, and a Qdrant payload's `graph_iri` field walks back the other way.
+
+`nexa:modality`, `nexa:mediaUri` and `nexa:pendingVisualIndex` exist from Phase 3.1 even though only the text path is wired up. Image attachments captured in 3.1 are recorded as `nexa:Note` with `modality "image"` and `pendingVisualIndex true`, then picked up by the Phase-3.2 backfill workflow — no data loss across phases.
+
+---
+
+## Sync flows
+
+### 1. Memos → GraphDB (real-time)
+
+```
+Memo content: "Muss JWT-Middleware für Auth-Service refaktorieren"
+       │
+       ▼ SAIA extracts entities + relations as JSON
+       │   { tasks: [{title, urgency}], technologies: [...],
+       │     relations: [{type:"uses", from:..., to:...}] }
+       │
+       ▼ n8n turns JSON into a SPARQL UPDATE
+       │
+       └──▶ INSERT DATA { ... } against GraphDB repo "nexa_knowledge"
+```
+
+### 2. Obsidian → GraphDB (`#nexa:sync-obsidian`)
+
+For each Obsidian note: parse front-matter + headings → emit `nexa:Project`, `nexa:Task`, `nexa:Note` triples; `nexa:mentions` for `[[wikilinks]]`.
+
+### 3. Nextcloud Tasks ↔ GraphDB (bidirectional)
+
+n8n trigger on Nextcloud CalDAV/Tasks change → `INSERT/DELETE DATA` to keep `nexa:status` and `nexa:scheduledFor` in sync.
+
+---
+
+## Example SPARQL queries
+
+### Q1 — All open tasks involving JWT, by urgency
+
+```sparql
+PREFIX nexa: <https://nuclide.systems/nexa/ontology#>
+
+SELECT ?taskTitle ?urgency ?projectName
+WHERE {
+  ?tech rdfs:label "JWT" .
+  ?task nexa:uses ?tech ;
+        rdfs:label ?taskTitle ;
+        nexa:status ?status ;
+        nexa:urgency ?urgency .
+  FILTER (?status IN ("needs-action", "in-progress"))
+  OPTIONAL { ?task nexa:childOf ?project . ?project rdfs:label ?projectName . }
+}
+ORDER BY DESC(?urgency)
+```
+
+### Q2 — What does Auth-Service transitively depend on?
+
+```sparql
+PREFIX nexa: <https://nuclide.systems/nexa/ontology#>
+
+SELECT DISTINCT ?dep ?label
+WHERE {
+  ?root rdfs:label "Auth-Service" .
+  ?root nexa:dependsOn+ ?dep .
+  ?dep  rdfs:label ?label .
+}
+```
+
+(`+` is SPARQL property-paths — transitive closure, free.)
+
+### Q3 — Topics with the most note-mentions in the last day
+
+```sparql
+PREFIX nexa: <https://nuclide.systems/nexa/ontology#>
+PREFIX xsd:  <http://www.w3.org/2001/XMLSchema#>
+
+SELECT ?topic (COUNT(?note) AS ?n)
+WHERE {
+  ?note a nexa:Note ;
+        prov:generatedAtTime ?ts ;
+        nexa:mentions ?topic .
+  FILTER (?ts > NOW() - "P1D"^^xsd:duration)
+}
+GROUP BY ?topic
+ORDER BY DESC(?n)
+LIMIT 10
+```
+
+### Q4 — Cross-pillar: "find vectors for tasks blocking project X"
+
+```sparql
+PREFIX nexa: <https://nuclide.systems/nexa/ontology#>
+
+SELECT ?taskTitle ?vectorId
+WHERE {
+  ?proj rdfs:label "Nexa" .
+  ?task nexa:childOf ?proj ;
+        nexa:status "in-progress" ;
+        nexa:vectorId ?vectorId ;
+        rdfs:label ?taskTitle .
+}
+```
+
+n8n then takes each `?vectorId`, fetches the embedding from Qdrant, and runs a "more like this" search for richer context.
+
+---
+
+## GraphRAG answer pipeline (`#nexa:ask`)
+
+```
+       #nexa:ask <question>
+              │
+       ┌──────┴──────┐
+       ▼             ▼
+   [Qdrant]      [GraphDB]
+   semantic       structural
+   top-k          SPARQL — auto-generated
+   notes          paths / dependencies
+       │             │
+       └──────┬──────┘
+              ▼
+       merge + rank
+              │
+              ▼
+       SAIA prompt:
+        "Given these passages and these relations, answer …"
+              │
+              ▼
+        comment under the original memo
+```
+
+Auto-generation of SPARQL: SAIA is given the ontology (above) as a system prompt and asked to emit a `SELECT`/`CONSTRUCT` query for the user's natural-language question. n8n executes it, falls back to a templated query on parse failure.
+
+---
+
+## n8n integration sketch
+
+### Workflow: Graph-Sync Trigger
+
+```
+[Memos Webhook]
+     │
+[Parse Content]
+     │
+[SAIA: Extract entities + relations as JSON]
+     │
+[Build SPARQL UPDATE INSERT DATA { ... }]
+     │
+[HTTP POST → /repositories/nexa_knowledge/statements]
+     │
+[Index in Qdrant; write Qdrant point id back via second SPARQL UPDATE]
+```
+
+### Workflow: Question Router
+
+```
+[#nexa:ask Query]
+     │
+   ┌─┴────────────────┐
+   ▼                  ▼
+[SAIA: NL → SPARQL]  [Qdrant: kNN]
+   │                  │
+[POST → SPARQL endpoint]
+   │                  │
+   └──────┬───────────┘
+          ▼
+    rank + merge → SAIA answer
+```
+
+---
+
+## Graph-management commands
+
+### `#nexa:graph-status`
+
+Returns triple count, class histogram, most-connected entity. Implemented as one SPARQL `SELECT (COUNT)`.
+
+### `#nexa:graph-trace [entity]`
+
+Returns the 1-hop (and optionally 2-hop) neighbourhood — a `DESCRIBE <iri>` plus a templated outgoing/incoming query.
+
+### `#nexa:graph-rebuild`
+
+Clears the named graph and replays Obsidian + Memos. SPARQL: `CLEAR GRAPH <https://nuclide.systems/nexa/runtime>` followed by the import workflow.
+
+---
+
+## Why two stores
+
+| Scenario | Qdrant | GraphDB | Best |
+|----------|--------|---------|------|
+| "Which note was similar to this one?" | ✅ | ❌ | Qdrant |
+| "What blocks this task?" | ❌ | ✅ | GraphDB |
+| "Explain this project" | ✅ context | ✅ structure | both |
+| "All JWT-related open work" | ✅ semantic | ✅ crisp | both |
+
+Combined: **complete understanding** rather than a search index *or* a structure index.
+
+---
+
+## Memory sources & retention
+
+Not every embedding deserves to live forever. Nexa indexes from several source types and each has its own expected lifetime. The contract: every Qdrant point carries `payload.source_type` and `payload.expires_at` (epoch seconds, or `null` for permanent). A daily prune workflow runs `DELETE WHERE expires_at < NOW()` on each collection and mirrors the deletion in GraphDB.
+
+| `source_type` | Where it comes from | Default TTL | Rationale |
+|---------------|--------------------|-------------|-----------|
+| `memo` | Memos webhook | **permanent** | User-authored, low volume, high signal. |
+| `obsidian` | Nextcloud `Notizen/` via WebDAV | **permanent** | User-authored knowledge base. |
+| `mail` | Nextcloud Mail (single account) | 365 d | Audit trail + searchable past correspondence. Mail digests are derived, not stored as their own embeddings. |
+| `mail_digest` | Daily digest output | 90 d | Summarised content; the source mails persist longer. |
+| `karakeep` | Karakeep saved links | **permanent** | User explicitly bookmarked. |
+| `rss` | Phase-2.2 morning digest feed items | 30 d | News signal decays fast; keep recent for "what was that article last week?". |
+| `web_search` | On-demand fetch via crawl4ai-mcp / markitdown-mcp during `#nexa:ask` | 90 d | Useful for "what did we look at last quarter?" but not eternal. |
+| `system` | Backrest / Proxmox / n8n alerts via `nexa.system` ntfy topic | 30 d | Operational telemetry; old alerts have little RAG value. |
+| `task` | Nextcloud Tasks ↔ GraphDB sync | until task deleted | Mirrors source-of-truth. |
+
+**External sources go through the same pipeline as memos** — fetch → markitdown-mcp → embed via TEI → upsert into `nexa_knowledge_text` with the appropriate `source_type` + `expires_at`. The graph node carries `nexa:source`, `nexa:fetchedAt`, `nexa:sourceUri`, and `nexa:contentHash` for de-dup (so the same article fetched twice doesn't create two points).
+
+### Web search loop
+
+`#nexa:ask` first searches existing memory. If the merged confidence is below a threshold (or the user adds `--web` to the command), Nexa runs a SearXNG query through `redis-searxng`, picks the top 3 results, fetches them through `crawl4ai-mcp` + `markitdown-mcp`, embeds the cleaned markdown, and **answers from the augmented context**. The fetched pages stay in memory (TTL 90 d) so the next related question doesn't re-fetch.
+
+This means the homelab's existing `*-mcp` containers are part of Nexa's data plane, not just decoration — see [docs/12 #8](./12-optimization-opportunities.md#8).
+
+### Manual overrides
+
+- `#nexa:learn <text> --permanent` overrides the default TTL.
+- `#nexa:forget <iri-or-search>` triggers an immediate Qdrant delete + GraphDB `DELETE WHERE { ?n nexa:vectorId "..." . }`.
+- `#nexa:retain <source_type> <days>` rewrites the default for that source type (stored in the `_config` namespace, picked up by the next prune run).
@@ -0,0 +1,326 @@
+# 09 — Deployment
+
+Pragmatic deployment guide that **assumes the existing homelab** and adds only what's missing.
+
+## What's already running (no action required)
+
+Surveyed from Homepage / Dozzle / Proxmox / Zoraxy:
+
+| Service | Host / port | URL |
+|---------|-------------|-----|
+| Memos | docker LXC 104 → `:5230` | `https://memos.nuclide.systems` |
+| n8n | docker LXC 104 → `:5678` | `https://n8n.nuclide.systems` |
+| LiteLLM (SAIA gateway) | docker LXC 104 → `:4000` | `https://ai.nuclide.systems` (proxies LobeHub UI :3210; API on :4000) |
+| Nextcloud | LXC 105 | `https://nc.nuclide.systems` |
+| ntfy | docker LXC 104 → `:7998` | `https://ntfy.nuclide.systems` |
+| Karakeep | docker LXC 104 → `:3090` | `https://hoarder.nuclide.systems` (legacy host alias kept for compatibility) |
+| Home Assistant | VM 100 (HAOS) | `https://ha.nuclide.systems` |
+| Pocket-ID (OAuth/SSO) | docker LXC 104 → `:1411` | `https://id.nuclide.systems` |
+| Vaultwarden | docker LXC 104 → `:11001` | `https://vault.nuclide.systems` |
+| Backrest | LXC 103 | (internal) |
+| AdGuard DNS | LXC 102 | (internal) |
+| Zoraxy reverse proxy | LXC 108 → `192.168.1.4:8000` | TLS for *.nuclide.systems |
+| `qdrant_scientific` (existing) | docker LXC 104 | **reused** — Nexa uses `nexa_*` collections in this instance |
+
+The deployment task is **not** "spin up the stack" — most of the stack is already up. It is **wire Nexa across these services + add the small bits that are missing**.
+
+## What's missing for Nexa
+
+1. **Qdrant collection** for Nexa (`nexa_knowledge`) inside the existing `qdrant_scientific` instance — vector dim follows Q15 (1024 for `bge-m3`, 768 for `nomic-embed-text`).
+2. **TEI** (HF text-embeddings-inference) on the docker host for self-hosted embeddings (LiteLLM key is **not** authorised for OpenAI embeddings — see [11/Q3+Q15](./11-open-questions.md)). Lighter than Ollama: single Rust binary, ~500 MB image, no LLM runtime.
+3. **n8n workflows** (`./nexa-core/n8n-workflows/`) imported into the running n8n.
+4. **Nextcloud lists & calendars** for Work / Personal / Shopping / Wishes (auto-discovered via `#nexa:config`).
+5. **Memos webhook → n8n** wired through the Memos config.
+6. **LiteLLM virtual key** for the `nexa` user with chat-only access (no embeddings — handled by Ollama).
+7. **A Zoraxy host entry** is *not* needed — Memos / n8n / LiteLLM are already proxied.
+8. **(Phase 3.4) Ontotext GraphDB** for the SPARQL pillar — see add-on at the bottom of this doc.
+
+---
+
+## Step 1 — Secrets
+
+Copy `nexa-core/.env.example` → `nexa-core/.env` and fill **only** the secrets:
+
+```bash
+cd nexa-core
+cp .env.example .env
+$EDITOR .env       # MEMOS_API_KEY, SAIA_API_KEY, NC_APP_PASSWORD, QDRANT_API_KEY
+```
+
+The `.env` is **only used at bootstrap time**. Everything else (list IDs, calendar IDs, collection sizes) is discovered at runtime via `#nexa:config` (see [05](./05-command-system.md)). No secrets should ever live in n8n workflow JSON — use n8n credentials instead.
+
+## Step 2 — Qdrant collection (`nexa_knowledge_text`)
+
+Phase 3.1 ships **Path A** (text-only) but the schema and naming already make room for **Path C** (text + visual) so adding a `nexa_knowledge_visual` collection later is a pure additive operation — no rename, no migration, no n8n rewiring.
+
+```bash
+# adjust QDRANT_HOST in .env first
+source nexa-core/.env
+
+# create the text collection from the schema file
+curl -X PUT "$QDRANT_HOST/collections/nexa_knowledge_text" \
+  -H "Content-Type: application/json" \
+  -H "api-key: $QDRANT_API_KEY" \
+  -d @nexa-core/config/qdrant_schema.json
+```
+
+The collection name is **always suffixed with the modality** (`_text`, `_visual`) so logic in n8n and SPARQL stays modality-aware from day one. Indexed rows carry these payload fields ([source](../nexa-core/config/qdrant_schema.json)):
+
+| Field | Why it's there now |
+|-------|--------------------|
+| `modality` | Always `"text"` in `_text`, `"image"` in `_visual`. Future-proofs cross-modality filters. |
+| `source_type` | `memo` / `mail` / `obsidian` / `screenshot` / `image` — used by classification and digest workflows. |
+| `media_uri` | `memos://…`, `nextcloud://…`, `obsidian://…`. Empty for text-only rows; populated when Path C ships. |
+| `graph_iri` | IRI of the corresponding `nexa:Note` in GraphDB. The same value is stored on the GraphDB side as `nexa:vectorId` — this is the cross-pillar bridge. |
+| `content_hash` | de-dup. |
+| `context` | `work` / `personal`. |
+
+> Targets the existing `qdrant_scientific` instance — just an extra collection, no new container.
+> The `vectors.size` field follows [Q15](./11-open-questions.md): **1024** for `bge-m3`, **768** for `nomic-embed-text-v1.5`.
+
+### Image attachments today (queue them)
+
+Memos can already attach images. Until Phase 3.2 the indexer **does not** embed them, but it **does** record them so they can be replayed later:
+
+- Memo with an image → text body still goes into `nexa_knowledge_text`.
+- The image attachment(s) are written as `nexa:Note` triples in GraphDB with `nexa:modality "image"` and `nexa:vectorId` left empty (`nexa:pendingVisualIndex true`).
+- A Phase-3.2 backfill workflow will pick up everything where `?n nexa:pendingVisualIndex true` and embed it through the visual collection.
+
+This means **no data is lost** between 3.1 and 3.2 — the queue is the GraphDB itself.
+
+## Step 3 — Self-hosted embeddings (TEI)
+
+Use HuggingFace **text-embeddings-inference** — single Rust binary, ~500 MB image, OpenAI-compatible API, loads exactly one model. Lighter than Ollama because there's no LLM runtime, no GGUF loader, no model registry.
+
+The active docker manager on this LXC is **Arcane** (visible from Homepage as the running container manager — the LXC was originally provisioned with the Dockge helper-script template, but Dockge is now stale; see [12/#33](./12-optimization-opportunities.md#33)). Paste the stack into Arcane → name it `nexa` → save → start. Don't `docker compose up -d` over SSH; Arcane manages the compose lifecycle.
+
+```yaml
+# Nexa stack — paste into Arcane.
+# Storage convention matches the rest of the homelab (verified against
+# the running Karakeep stack, Q19): host bind-mount of
+# /mnt/pve/unas/services/<svc>/<vol>. No volume-driver, no CIFS, no
+# credentials in the compose — the LXC's NFS mount is already there.
+services:
+  nexa-embed:
+    image: ghcr.io/huggingface/text-embeddings-inference:cpu-1.5
+    container_name: nexa-embed
+    restart: unless-stopped
+    command: ["--model-id", "BAAI/bge-m3"]
+    ports:
+      - "127.0.0.1:8080:80"
+    volumes:
+      - /mnt/pve/unas/services/nexa/tei-cache:/data
+    env_file:
+      - .env
+
+networks: {}
+```
+
+Pre-deploy step on the docker LXC (one-time):
+
+```bash
+mkdir -p /mnt/pve/unas/services/nexa/{tei-cache,qdrant,graphdb}
+mkdir -p /mnt/pve/unas/backup/nexa/snapshots/{qdrant,graphdb}
+```
+
+Memory budget: ~1.1 GB resident. First start downloads `bge-m3` (~1 GB) into `/mnt/pve/unas/services/nexa/tei-cache/`; subsequent restarts are instant.
+
+Secrets (`SAIA_API_KEY`, `MEMOS_API_KEY`, `QDRANT_API_KEY`, `NC_APP_PASSWORD`) go in the stack's `.env` next to the compose — same pattern Karakeep uses (`env_file: .env`). Arcane has an editor for it. Vaultwarden becomes the source-of-truth long-term ([12/#11](./12-optimization-opportunities.md#11)) but isn't required for the first cut.
+
+> **Why bind-mount and not SMB?** Earlier drafts of this doc proposed an SMB-via-docker-volume pattern because of the user's "had it with Nextcloud" experience. The Karakeep stack confirms the actual convention is the simpler one: **host bind-mount of the LXC's existing `/mnt/pve/unas` NFS mount**. The Nextcloud failure was Nextcloud-specific (its setup tooling chowns the data dir to `www-data`, which fails against `root_squash` exports) and doesn't apply to normal containers. SMB-as-docker-volume stays documented in [12/#27](./12-optimization-opportunities.md#27) only as an escape hatch *if* a future service hits Nextcloud-style issues — Nexa doesn't, so we don't use it.
+
+Register it inside LiteLLM (admin UI → Models) with the OpenAI-compatible adapter:
+
+- model name: `nexa-embed`
+- provider: `openai`
+- model: `bge-m3`
+- api_base: `http://nexa-embed:80/v1`
+- api_key: any non-empty string (TEI ignores it)
+
+Now n8n only ever talks to LiteLLM and the model is swappable without touching workflows.
+
+## Step 4 — LiteLLM virtual key
+
+In the LiteLLM admin UI (`ai.nuclide.systems`):
+
+1. Create user `nexa`.
+2. Issue a virtual key with access to:
+   - one chat model (already-available model from your SAIA gateway).
+   - the `nexa-embed` model from Step 3.
+3. Paste the key into `SAIA_API_KEY` in `.env`.
+
+## Step 4 — n8n workflows
+
+Import the JSON exports — credentials are filled inside n8n, not in the JSON:
+
+```bash
+# n8n personal access token from the n8n UI: Settings → API
+N8N_URL=https://n8n.nuclide.systems
+N8N_TOKEN=...    # from the n8n UI
+
+for f in nexa-core/n8n-workflows/phase-1/*.json \
+         nexa-core/n8n-workflows/phase-2/*.json; do
+  curl -X POST "$N8N_URL/api/v1/workflows" \
+    -H "X-N8N-API-KEY: $N8N_TOKEN" \
+    -H "Content-Type: application/json" \
+    --data-binary "@$f"
+done
+```
+
+Inside n8n, attach credentials to the imported nodes:
+
+- **Memos** → HTTP header `Authorization: Bearer $MEMOS_API_KEY`
+- **LiteLLM** → header `Authorization: Bearer $SAIA_API_KEY` (chat + `nexa-embed`)
+- **Nextcloud Tasks / Calendar / WebDAV (Obsidian vault under `Notizen/`)** → one app password (`$NC_APP_PASSWORD`), reused across all three node types
+- **Qdrant** → header `api-key: $QDRANT_API_KEY`
+
+Activate each workflow individually after smoke-test.
+
+## Step 5 — Memos webhook
+
+In the Memos admin UI, set the webhook URL to the production address of the discovery workflow:
+
+```
+https://n8n.nuclide.systems/webhook/memos
+```
+
+The same URL is the one the workflow exposes; verify with:
+
+```bash
+curl -i https://n8n.nuclide.systems/webhook/memos
+# expect 200 / 405, never 404
+```
+
+## Step 6 — Bootstrap commands via Memos
+
+Create a memo with body `#nexa:config` — the discovery workflow:
+
+1. Lists Nextcloud Tasks lists, looking for `Persönlich`, `DLR`, `Einkaufsliste`, `Wunschliste` (and any new lists added later — see [05](./05-command-system.md)). Caches `name → id`.
+2. Lists Nextcloud Calendars by the same names; caches IDs.
+3. Verifies the Nextcloud Mail account `fkrebs@nucli.de` and the folder list (`Posteingang`, `Archiv`, `Junk`, `Waiting`).
+4. Counts existing Qdrant points in `nexa_knowledge_text`.
+5. Verifies LiteLLM reachability + lists available models for the Nexa virtual key.
+6. Replies as a comment with a **runtime-config snapshot** that's stored in the Qdrant `_config` namespace (and mirrored as `nexa-core/config/runtime_config.json`, gitignored).
+
+The same workflow is also triggered by:
+- A daily cron inside n8n (so newly added Nextcloud lists become routable without intervention).
+- Cache-miss in the task-router — if a list ID 404s, the router fires `#nexa:config` once and retries.
+
+After this point, `.env` is read-once. Subsequent runs read config from Qdrant.
+
+## Step 7 — Smoke tests
+
+```bash
+# (1) Memos round-trip — should produce a comment within ~5 s
+curl -X POST https://memos.nuclide.systems/api/v1/memos \
+  -H "Authorization: Bearer $MEMOS_API_KEY" \
+  -H "Content-Type: application/json" \
+  -d '{"content":"- [ ] testing the router #nexa"}'
+
+# (2) Classification dry-run
+curl -X POST https://memos.nuclide.systems/api/v1/memos \
+  -H "Authorization: Bearer $MEMOS_API_KEY" \
+  -d '{"content":"#nexa:route-test buy milk"}'
+
+# (3) RAG test (requires at least one indexed memo/note)
+curl -X POST https://memos.nuclide.systems/api/v1/memos \
+  -H "Authorization: Bearer $MEMOS_API_KEY" \
+  -d '{"content":"#nexa:ask what is the goal of nexa?"}'
+```
+
+## Step 8 — Reverse proxy
+
+Already done — Zoraxy at `192.168.1.4:8000` terminates TLS for `*.nuclide.systems` and forwards to docker LXC 104 (`192.168.1.40`). **No new entry is required for Nexa**: every service Nexa talks to already has a host entry.
+
+## Step 9 — Backups
+
+Already covered by Backrest (LXC 103). Add:
+
+- **n8n workflows** → `nexa-core/scripts/backup_workflows.sh` (already present) into a Backrest schedule.
+- **Qdrant snapshots** → schedule a daily `POST /collections/nexa_knowledge/snapshots` and rsync to S3 (`s3.nuclide.systems`). Add as a Backrest pre-hook on the docker host.
+
+For deeper detail: [10 — Operations](./10-operations.md).
+
+---
+
+## Phase add-on: Ontotext GraphDB (Phase 3.4)
+
+Defer until 3.1–3.3 ship.
+
+```yaml
+# nexa-core/docker-compose.graph.yml
+services:
+  graphdb:
+    image: ontotext/graphdb:10.7.0
+    container_name: nexa-graphdb
+    ports: ["127.0.0.1:7200:7200"]
+    environment:
+      GDB_JAVA_OPTS: "-Xmx4g -Xms1g"
+    volumes:
+      - ./data/graphdb:/opt/graphdb/home
+    restart: unless-stopped
+```
+
+After first start, create the repository (one-time):
+
+```bash
+curl -X POST http://localhost:7200/rest/repositories \
+  -H 'Content-Type: application/json' \
+  -d '{
+    "id": "nexa_knowledge",
+    "title": "Nexa Knowledge Graph",
+    "type": "graphdb",
+    "params": {
+      "ruleset":     {"value": "rdfsplus-optimized"},
+      "baseURL":     {"value": "https://nuclide.systems/nexa/"}
+    }
+  }'
+```
+
+Optional Zoraxy entry `graph.nuclide.systems` → `192.168.1.40:7200` if you want the SPARQL Workbench in a browser; otherwise n8n talks to it on the docker network at `http://nexa-graphdb:7200`.
+
+For schema and example queries: [08-graphrag-architecture](./08-graphrag-architecture.md).
+
+---
+
+## Phase add-on: visual collection (Phase 3.2)
+
+Adds Path C — image embeddings without disturbing the text path. Schema is already in `nexa-core/config/qdrant_schema_visual.json`.
+
+```bash
+# (1) replace TEI with infinity (or run alongside) for CLIP-family support
+docker rm -f nexa-embed
+docker run -d --name nexa-embed \
+  --restart unless-stopped \
+  -p 127.0.0.1:8080:80 \
+  -v infinity-data:/app/.cache \
+  michaelf34/infinity:latest \
+  v2 \
+  --model-id BAAI/bge-m3 \
+  --model-id jinaai/jina-clip-v2 \
+  --port 80
+
+# (2) create the visual collection
+curl -X PUT "$QDRANT_HOST/collections/nexa_knowledge_visual" \
+  -H "Content-Type: application/json" \
+  -H "api-key: $QDRANT_API_KEY" \
+  -d @nexa-core/config/qdrant_schema_visual.json
+
+# (3) register the second model in LiteLLM as `nexa-embed-visual`
+#     (same OpenAI-compatible route, different model id)
+
+# (4) backfill queued images:
+#     SPARQL: SELECT ?note ?uri WHERE { ?note nexa:pendingVisualIndex true ; nexa:mediaUri ?uri }
+#     For each row: fetch the bytes, embed via nexa-embed-visual, upsert into the visual collection,
+#     UPDATE GraphDB to set nexa:vectorId and DELETE nexa:pendingVisualIndex.
+```
+
+n8n RAG workflow gains a parallel branch: text-query → both `nexa-embed-text` and `nexa-embed-visual` text encoders → kNN against both collections → merge by score before SAIA prompt.
+
+---
+
+## Step-back / rollback
+
+- **Disable any Nexa workflow** in n8n — deactivates the side effect immediately, Memos webhooks become no-ops.
+- **Drop a Qdrant collection** — `curl -X DELETE $QDRANT_HOST/collections/nexa_knowledge_text -H "api-key: $QDRANT_API_KEY"`.
+- **Re-discover** — `#nexa:reset-config` then `#nexa:config`.
@@ -0,0 +1,101 @@
+# 10 — Operations
+
+Day-2 concerns. Backups, monitoring, troubleshooting.
+
+## Backups
+
+**Tiering** (3-2-1, full design in [12 #37](./12-optimization-opportunities.md#37)):
+1. **Source** — UNAS RAID 6 + native UniFi Drive snapshots ([12 #38](./12-optimization-opportunities.md#38), still to enable).
+2. **Warm tier** — `s3.nuclide.systems` (on-site), restic/borg via Backrest (LXC 103).
+3. **Cold tier off-site** — encrypted `rclone` copy to a third-party (Jottacloud is the user's candidate; decision tracked in [Q20](./11-open-questions.md#q20)). Always encrypt before upload — provider sees only ciphertext.
+
+Nexa-specific items inside this pipeline:
+
+| What | How | Frequency |
+|------|-----|-----------|
+| n8n workflow JSON | `nexa-core/scripts/backup_workflows.sh` → git push | hourly cron in n8n container |
+| Qdrant `nexa_knowledge_text` (and `_visual` once Phase 3.2) | `POST /collections/<name>/snapshots` → write to `backup/nexa/snapshots/qdrant/<date>/` on UNAS, then Backrest picks it up for warm + cold | daily (snapshot), weekly (cold tier) |
+| GraphDB `nexa_knowledge` (Phase 3.4+) | scheduled SPARQL `CONSTRUCT` export → `backup/nexa/snapshots/graphdb/<date>.ttl.gz` | daily |
+| Memos DB | Backrest snapshot of Memos data dir | already covered |
+| Nextcloud | Nextcloud's own backup app + Backrest of `services/nextcloud/` | already covered |
+| `runtime_config` (Qdrant `_config` namespace) | Qdrant snapshot covers it | n/a |
+
+## Monitoring
+
+| Signal | Source | Sink |
+|--------|--------|------|
+| Container up/down | Dozzle (`192.168.1.40:3553`) + docker healthchecks. **Skip names matching `octoprint*`** — that container is intentionally powered down most of the time. | Memos system feed via ntfy |
+| n8n workflow failures | n8n built-in failure-webhook | ntfy → `nexa.system` topic |
+| Proxmox / disk / memory alerts | Proxmox notification target → ntfy | ntfy → Memos digest |
+| LiteLLM rate-limit | LiteLLM logs / cost-tracking | Memos morning digest |
+| Backrest run status | Backrest webhook | ntfy |
+
+A **single ntfy topic `nexa.system`** is the convention; n8n has one workflow that re-broadcasts it as a Memos comment under a pinned `[SYSTEM]` memo.
+
+## Troubleshooting
+
+### Memos webhook not firing
+
+```bash
+# is the Memos webhook config still pointing at n8n?
+curl -s -H "Authorization: Bearer $MEMOS_API_KEY" \
+  https://memos.nuclide.systems/api/v1/workspace/setting | jq '.webhooks'
+
+# does n8n still expose the path?
+curl -i https://n8n.nuclide.systems/webhook/memos     # expect 200/405, never 404
+```
+
+If 404 → workflow is inactive in n8n. Activate.
+
+### LiteLLM 401 / 429
+
+- 401 → the Nexa virtual key was rotated. Reissue, update `.env`, re-create the n8n credential.
+- 429 → set per-key TPM/RPM limits in LiteLLM admin; classification calls are tiny (<300 tok), embeddings are the bulk.
+
+### Qdrant `nexa_knowledge` empty
+
+```bash
+# is the indexing workflow active?
+docker logs nexa-n8n 2>&1 | grep memos_bridge | tail
+
+# manual index test
+curl -X POST https://memos.nuclide.systems/api/v1/memos \
+  -H "Authorization: Bearer $MEMOS_API_KEY" \
+  -d '{"content":"manual probe #nexa"}'
+
+# point count
+curl -s -H "api-key: $QDRANT_API_KEY" \
+  $QDRANT_HOST/collections/nexa_knowledge | jq '.result.points_count'
+```
+
+### Wrong list routing (Work vs Personal)
+
+1. Run `#nexa:route-test <text>` and check the confidence value.
+2. If <0.7 the router defaults to Personal (by design — see [06](./06-classification-logic.md)).
+3. Tune the system prompt in `nexa-core/ai-prompts/system_prime.txt`; commit the change.
+
+### "Where did Nexa store this?"
+
+```bash
+# state dump
+curl -X POST https://memos.nuclide.systems/api/v1/memos \
+  -d '{"content":"#nexa:export-state"}'
+# returns runtime_config + counters as a JSON memo
+```
+
+## Log locations
+
+| Component | Where |
+|-----------|-------|
+| Memos | `docker logs nexa-memos` (LXC 104) |
+| n8n | `docker logs nexa-n8n` |
+| LiteLLM | `docker logs litellm` |
+| Qdrant | `docker logs qdrant_scientific` |
+| Zoraxy | LXC 108 web UI → Statistical Analysis |
+| Backrest | LXC 103 web UI |
+
+For a one-shot dump:
+
+```bash
+ssh nuc 'docker compose -p nexa logs --tail 500' > /tmp/nexa.log
+```
@@ -0,0 +1,73 @@
+# 11 — Open Questions (user-info-required)
+
+Items that **block progress** and need a human decision before a workflow can be implemented or a service deployed. Tick them off as you decide.
+
+## Resolved
+
+- [x] **Q1 — Graph DB choice → Ontotext GraphDB (SPARQL).** Rationale: explore Nexa's memory through SPARQL is a stated goal. [08-graphrag-architecture](./08-graphrag-architecture.md) is rewritten accordingly.
+- [x] **Q2 — Vector store → reuse `qdrant_scientific`** with a `nexa_*` collection prefix. No dedicated container.
+- [x] **Q3 — Embeddings model → not OpenAI.** Self-host on the docker host via **TEI** (HF `text-embeddings-inference`) — Rust single-binary, OpenAI-compatible, ~500 MB image, no LLM runtime overhead. Speed analysis in §"Speed budget" below.
+- [x] **Q5 — Display name → Karakeep.** The Zoraxy host alias `hoarder.nuclide.systems` is legacy — keep it for compatibility, but all docs, prompts and new workflow nodes use "Karakeep".
+- [x] **Q13 — Octoprint container is *intentionally* temporary.** Suppress from Phase-5 monitoring: container-up/down alerts must skip names matching `octoprint*` (or any container tagged `proxmox-he 3d-printing`).
+- [x] **Q14 — Homepage Zoraxy widget → no such widget.** Config error in `homepage/services.yaml`; cosmetic, not Nexa-related.
+- [x] **Q15 — Embeddings staging plan → A now, C prepared.**
+  - **Phase 3.1 (now)**: TEI + `BAAI/bge-m3`, single collection `nexa_knowledge_text` (1024-dim). DE/EN multilingual, fits the corpus.
+  - **Phase 3.2 (later)**: swap TEI → `infinity`, add `jinaai/jina-clip-v2` (768-dim), second collection `nexa_knowledge_visual`. Backfill from the queue (see Q16).
+  - All schema fields needed for 3.2 (`modality`, `media_uri`, `graph_iri`, `nexa:pendingVisualIndex`) are introduced **now** so 3.2 is purely additive — no rename, no migration. See [`qdrant_schema.json`](../nexa-core/config/qdrant_schema.json) and [`qdrant_schema_visual.json`](../nexa-core/config/qdrant_schema_visual.json).
+- [x] **Q16 — Image-attachment queue ergonomics → leave bytes at source, reference by `media_uri`.** Zero copy. Memos attachments stay in Memos's data dir, Nextcloud images stay in Nextcloud, Obsidian images stay in the `Notizen` folder; the Phase-3.2 backfill workflow fetches them on demand via the URI scheme.
+- [x] **Q17 — Immich out-of-band.** Nexa does not call the Immich smart-search API. Photo-library queries stay inside Immich.
+- [x] **Q18 — SAIA proxies an embedding model, but 10 msg/min rate limit makes it unusable for ingest.** A 2 k-note Obsidian backfill would take ~3.3 h; real-time `#nexa:ask` would queue for tens of seconds during a writing burst. **Decision: deploy TEI as planned.** SAIA embeddings remain available as a manual fallback (e.g. for one-off `#nexa:learn` calls where rate is irrelevant).
+- [x] **Q19 — Storage convention is plain host bind-mount of `/mnt/pve/unas/services/<svc>/<vol>`.** Karakeep stack confirmed: no driver opts, no CIFS, no per-volume credentials. Secrets via `env_file: .env` next to the compose. The earlier SMB-as-docker-volume proposal in this repo is withdrawn ([12/#27](./12-optimization-opportunities.md#27)) — it was over-fitting to the Nextcloud-specific NFS issue (Nextcloud's setup tooling chowns to `www-data` and fails on `root_squash`-style exports; that doesn't apply to normal containers). Nexa stack updated in [docs/09 §Step 3](./09-deployment.md#step-3--self-hosted-embeddings-tei).
+- [x] **Q4 — Obsidian sync via Nextcloud WebDAV.** Confirmed the vault is `nc.nuclide.systems/Notizen/` (multi-device sync via Nextcloud client). Nexa accesses it through WebDAV (`/remote.php/dav/files/<user>/Notizen/`) reusing the existing `NC_APP_PASSWORD` — no filesystem mount, no LXC-to-LXC privilege escalation. Phase 3.1 polls every 15 min; an upgrade to Nextcloud's `notify_push` for sub-second updates is captured as optimization #15. Ignore list (don't index):
+  - `.copilot/`, `.copilot-index/` — Obsidian Copilot's own embeddings cache.
+  - `.smart-env/` — Smart Connections / Smart Composer plugin data (~13 MB).
+  - `.caldav-sync/` — calendar sync, not notes.
+  - `assets/` — 186 MB of binaries; routed through the Phase-3.2 visual queue (`nexa:pendingVisualIndex`), not the text path.
+  - `Templates/` — empty templates, low semantic value.
+  - `BMO/`, `Excalidraw/` — plugin folders.
+  Anything else under `Notizen/**/*.md` is fair game.
+- [x] **Q6 + Q7 — Lists & calendars discovered by name, not ID. Self-healing.**
+  Confirmed names from screenshots:
+  - **Tasks**: `Persönlich` (14), `DLR` (13), `Einkaufsliste` (13), `Wunschliste` (9).
+  - **Calendars**: `Persönlich`, `DLR`, `Einkaufsliste`, `Wunschliste` (Nextcloud Tasks is calendar-backed, so the names are shared; Tasks lives on the calendar of the same name).
+  - Mapping in classification: `DLR` = Work-Kontext, `Persönlich` = Personal-Kontext, `Einkaufsliste` = Shopping, `Wunschliste` = Wishes.
+
+  **Self-healing requirement (the user explicitly noted lists may change/grow):** Nexa must not cache IDs forever. The `#nexa:config` workflow runs (a) on demand, (b) once daily as a scheduled refresh, and (c) automatically as a retry whenever a list/calendar lookup returns 404 or "not found". The runtime-config record in Qdrant's `_config` namespace stores `{name → id, discovered_at}` and gets invalidated on cache-miss. New lists added in Nextcloud surface in the next scheduled refresh and Nexa starts honouring `#einkaufsliste` / `#dlr` etc. without code changes.
+
+- [x] **Q8 — Mail via Nextcloud, single account `fkrebs@nucli.de`.** No extra IMAP entry. n8n's IMAP node uses the same server credentials Nextcloud Mail already holds for that account; Nexa never sees a second password. Folders confirmed: `Posteingang` (default), `Archiv`, `Junk` (61 — auto-filtered, ignored by Nexa), `Papierkorb`, `Waiting`. The `Waiting` folder is a useful manual signal — items moved there by the user are skipped from digest (treat as "in flight").
+
+- [x] **Q9 — Pocket-ID SSO is configured everywhere.** No separate auth for Nexa: Memos / n8n / future Nexa dashboard authenticate humans via Pocket-ID at the Zoraxy layer. Machine-to-machine calls (n8n → Memos webhook, n8n → Nextcloud, n8n → Qdrant, n8n → LiteLLM) keep using API keys / app passwords — SSO is for human UIs only. Don't add basic-auth or per-app login screens.
+
+  This **resolves Q10 too** (the proposed "Pocket-ID SSO in front of n8n / Memos" is already done; Nexa just inherits it).
+
+- [x] **Q10 — folded into Q9.**
+
+## Hardware / capacity
+
+- [x] **Q11 — Capacity confirmed from Proxmox node + LXC summaries.**
+  - **Host (NUC 14 Pro)**: 22 threads (Intel Core Ultra 7 155H, 1 socket), 62.12 GiB RAM, 1.64 TiB disk (0.35% used). Steady state: 32.4 GiB used (≈24 GiB of which is ZFS ARC), load avg 1.99 / 1.39 / 1.15, IO delay 0.04%.
+  - **LXC 104 (docker, unprivileged)**: 16 CPU, **31.25 GiB RAM cap (7.86 GiB used = 25%)**, 8 GiB swap (idle), **200 GiB boot disk at 47.7% used (~95 GiB)**. Tag `proxmox-helper-scripts`. Intel iGPU passthrough configured but currently failing — see [12/#26](./12-optimization-opportunities.md#26).
+  - **RAM headroom is comfortable**: Phase-3 budget (~7 GiB additional — Qdrant ~1.5 + TEI/bge-m3 ~1.1 + GraphDB 4-GB heap + later +infinity/jina-clip-v2 ~1) fits inside the existing LXC cap with ~16 GiB still free. Levers if needed: (1) raise the LXC cap (host has plenty), (2) cap `zfs_arc_max` lower (ARC currently 24 GiB). Either is one line of config.
+  - **Disk is fine** — the LXC also NFS-mounts the UNAS at `/mnt/pve/unas` (19.4 TiB total, 16.3 TiB free). Large/persistent volumes (Qdrant data, GraphDB repo, snapshots, image bytes if we ever stage them) bind-mount there; the 200 GiB local boot disk only carries images and small ephemeral state. See [12/#27](./12-optimization-opportunities.md#27).
+  - **Verdict: no blockers for Phase-3.1.** Revisit once 3.4 GraphDB lands.
+## Backups (deferred)
+
+Backup-tier decisions are intentionally parked while Phase-3.1/3.2/3.4 are built. UNAS RAID 6 + Backrest already cover file-level recovery; pool-snapshot configuration ([12/#38](./12-optimization-opportunities.md#38)) remains the single highest-leverage data-protection action and doesn't depend on either question below. Re-open both when [Phase 3.3](./02-roadmap.md#phase-3--memory-qdrant--rag) becomes the next-up item.
+
+- [ ] **Q12 — *deferred.*** S3 archive bucket on `s3.nuclide.systems` (warm tier). Pick when Phase 3.3 is up next.
+- [ ] **Q20 — *deferred.*** Off-site cold-tier provider (Jottacloud is the leading candidate). Pick when Phase 3.3 is up next.
+
+---
+
+## Speed budget (Q3 follow-up)
+
+Workload measured against the **LXC 104 cap** (16 CPU, 31.25 GiB RAM — host has 22 threads / 62 GiB if we ever raise the cap):
+
+| Task | Volume | Latency target | Achievable on CPU with `bge-m3` | Achievable with `nomic-embed-text` |
+|------|--------|----------------|---------------------------------|------------------------------------|
+| Real-time memo embed | 1 doc | <500 ms incl. n8n round-trip | ✅ ~50–100 ms | ✅ ~20 ms |
+| Daily ingest | ~70 docs | <60 s | ✅ ~5–10 s | ✅ ~2 s |
+| Obsidian backfill (one-shot) | ~2 000 docs | <15 min | ✅ ~2–4 min | ✅ <1 min |
+| RAG query embed (`#nexa:ask`) | 1 doc | <300 ms | ✅ ~50 ms | ✅ ~20 ms |
+
+Conclusion: CPU-only TEI is sufficient — no GPU needed for current scope. Bottleneck is SAIA chat (already remote), not embeddings. SAIA's own embedding endpoint is rate-limited to **10 req/min** which would block real-time embed; self-hosted TEI side-steps that completely.
@@ -0,0 +1,149 @@
+# 12 — Optimization Opportunities
+
+Observations from the running infrastructure. Each item is independent — accept, defer, or reject.
+
+## For Nexa directly
+
+1. **Reuse, don't redeploy.** The earlier `DEPLOYMENT.md` would have spun a second Memos / n8n / Qdrant. The current homelab already runs all three. The new [09-deployment](./09-deployment.md) treats these as pre-existing — keeps the config minimal and avoids port collisions.
+2. **Use LiteLLM virtual keys per logical caller.** Today there's one SAIA key. Issuing one key per workflow (`nexa-router`, `nexa-embed`, `nexa-digest`) lets you set different per-key rate/cost limits and disable a single workflow without rotating everything.
+3. **Use n8n's *credential* objects, never inline secrets.** The current workflows under `nexa-core/n8n-workflows/phase-1/*.json` should be reviewed — if any header `Authorization` is hardcoded, replace with credential references before importing.
+4. **Centralise system alerts on a single ntfy topic** (`nexa.system`). Backrest, Proxmox notifications, n8n failure-webhook and the Octoprint Exited state all go to that topic; one Memos system memo aggregates them.
+5. **Defer graph DB until Phase 3.4.** Qdrant alone covers ~80% of the assistant's daily value. The graph DB is justified once you actually need dependency analysis or critical-path queries.
+6. **Auto-export n8n workflows.** `nexa-core/scripts/backup_workflows.sh` already exists. Schedule it inside the n8n container (cron) and let it `git commit && git push` — this is the cheapest disaster recovery.
+
+## For the wider homelab (out of scope but worth noting)
+
+7. **AI gateway naming.** `ai.nuclide.systems` currently proxies LobeHub (a chat UI on `:3210`), while the LiteLLM API lives on `:4000`. For Nexa, point n8n directly at LiteLLM (`http://192.168.1.40:4000` over the docker net — no public TLS hop needed) to save latency and isolate from UI restarts.
+8. **MCP servers consolidation.** Dozzle shows `crawl4ai-mcp`, `markitdown-mcp`, `papersearch-mcp` running individually. They're all MCP servers — Nexa Phase-3 could pull from these via LiteLLM's MCP support to enrich the embedding pipeline (e.g. fetch + markitdown a Karakeep link before embedding).
+9. **Backup the n8n SQLite file** — Backrest covers `/home/node/.n8n` if added; today the only "backup" is the workflow JSON which omits credentials and execution history.
+10. **Pocket-ID SSO in front of n8n** would let you remove n8n basic-auth and unify session management across the whole stack. One-time setup, large UX win.
+11. **Vaultwarden as the secret store** for Nexa secrets (`SAIA_API_KEY`, `MEMOS_API_KEY`, …) — read at bootstrap via the Bitwarden CLI from inside the docker host. Removes the need for a `.env` on disk.
+12. **AdGuard as DNS-based control plane.** Since AdGuard is the resolver for the LAN, you can rewrite `*.nuclide.systems` to `192.168.1.4` (Zoraxy) internally and avoid a hairpin via the WAN — already the case if AdGuard rewrite rules are set, worth verifying.
+13. **Disk usage on LXC 104** is 47.7 % (Proxmox). Monitor; n8n execution logs and Dozzle history are the usual culprits. Setting `EXECUTIONS_DATA_PRUNE=true` and `EXECUTIONS_DATA_MAX_AGE=168` (7 days) on n8n keeps it bounded.
+14. **Vector-store sprawl in the homelab — three competing indexes today.** Nexa is about to be the fourth. Track for eventual consolidation:
+    - **Obsidian Copilot** (`.copilot`, `.copilot-index`) and **Smart Connections / Smart Composer** (`.smart-env`, ~13 MB) — embed the Obsidian vault into two separate vector stores inside the vault.
+    - **Paperless-AI ChromaDB** (`services/paperless-ai/chromadb/`) — embeds scanned documents from Paperless-ngx for Q&A.
+    - **Nexa Qdrant** (`nexa_knowledge_text`, soon `_visual`) — embeds the cross-source corpus.
+
+    Long-term, Nexa is the natural single source of truth (it sees memos + mail + obsidian + RDF graph). Once its RAG is satisfying, retire the Obsidian-plugin indexes and consider letting Nexa **read from** Paperless-AI's ChromaDB rather than re-embed PDFs (one-line ChromaDB query, much cheaper than redoing OCR-to-vector). Track but don't act yet.
+
+15. **Retire `open-webui`.** Confirmed stale by the user — only LobeHub is in active use as the LiteLLM chat front-end (`ai.nuclide.systems`). Stop the container, tar `services/open-webui/` into `backup/open-webui/`, then remove the stack. Frees ~500 MB RAM + a couple of GB of model cache.
+
+16. **`services/siyuan/workspace/` is dead data.** SiYuan retired, content migrated to Obsidian (Nextcloud `Notizen/`). Keep a final tar in `backup/siyuan/`, then `rm -rf services/siyuan/`. Frees disk + removes a "is this still authoritative?" question for future agents (and for Nexa's classifier if it ever sees the path).
+17. **Real-time Obsidian sync via `notify_push`.** Phase 3.1 polls WebDAV every 15 min (Q4 resolution). Once that works, swap to Nextcloud's `notify_push` app for sub-second propagation. One-line workflow change in n8n.
+18. **`assets/` is 186 MB of binaries** in the Obsidian vault — worth a glance to confirm it's mostly images (Phase-3.2 visual queue) rather than something that should live in Nextcloud Files proper.
+19. **Paperless-AI as a Phase-2.x triage helper for `_sortMe/Downloads/`.** UNAS shows ~230 PDFs/docs in `_sortMe/Downloads/` plus another batch under `_sortMe/Anne/`. Paperless-AI (already running) can ingest, OCR, classify and route them; Nexa's role is to *delegate* — wire a workflow that posts a batch to Paperless-AI and reports the result back via Memos.
+20. **`media/Recipes/`** has ~300 individually-named recipe folders. Once Phase-3.1 text indexing works, this becomes a high-quality test corpus for `#nexa:ask` (e.g. "what was that gochujang noodle recipe with no anchovies?"). Out-of-scope for the deployment plan, but a satisfying first user-facing win.
+
+## Proxmox host (NUC 14 Pro) tuning
+
+Observed from the node summary: 22 threads, 62 GiB RAM (32 GiB used, ~24 GiB of which is ZFS ARC), 1.64 TiB disk (0.35% used), load avg <2.0, IO delay 0.04%, kernel 6.17.13-4-pve, PVE 9.1.9, EFI. Suggestions in priority order:
+
+21. **Cap ZFS ARC.** Default is 50% of RAM (~31 GiB); current actual ~24 GiB. For a node that runs services rather than a pure storage box, capping at 8–12 GiB frees ~12–16 GiB for guests without measurable IO impact (disk is 1.64 TiB and 0.35% used — there's nothing hot to cache):
+    ```
+    echo 'options zfs zfs_arc_max=8589934592' > /etc/modprobe.d/zfs.conf   # 8 GiB
+    update-initramfs -u
+    ```
+    Reboot or `echo 8589934592 > /sys/module/zfs/parameters/zfs_arc_max` to apply live.
+22. **Enable KSM (Kernel Same-page Merging).** With ~40 docker containers + several LXCs, KSM typically frees 1–3 GiB by deduplicating identical memory pages. Currently `KSM sharing: 0 B` in the summary. PVE has `ksmtuned` available — `systemctl enable --now ksmtuned`.
+23. **Suppress the `pve-no-subscription` repository warning** — either accept it (it's a homelab) and apply the `pve-no-subscription-warning` polyfill, or move to the enterprise repo. Pure cosmetic, but the orange banner in the UI is noise.
+24. **Swap is 31 GiB on a 62 GiB box with ZFS root** — almost certainly oversized. Drop `vm.swappiness` to 10 (`sysctl -w vm.swappiness=10` + persist) so swap is only used under genuine pressure, and consider shrinking the swap volume if disk-layout permits.
+25. **Verify scheduled ZFS scrub is enabled.** PVE ships `zfs-scrub-monthly@.timer` — `systemctl list-timers | grep zfs` to confirm. Cheap insurance on a 1.6 TiB pool.
+26. **SMART monitoring on the NVMe.** `smartctl -a /dev/nvme0` should be regularly polled; PVE's notification target can ntfy on degradation. Combine with the existing `nexa.system` ntfy topic (optimization #4) so disk-health alerts land in the same Memos system feed as everything else.
+27. **NTP source via AdGuard.** AdGuard already resolves DNS for the LAN; pointing the host's `systemd-timesyncd` at `pool.ntp.org` resolved through AdGuard avoids any external dependency for time. One-line change in `/etc/systemd/timesyncd.conf`.
+28. **`fstrim.timer` enabled** for the SSD pool — verify with `systemctl status fstrim.timer`. Default-on in modern PVE, but quick to confirm.
+29. **Watchdog config** is irrelevant for a single-node setup (HA is the use case), so leave the default. Mentioned only so future agents don't add it speculatively.
+
+## Docker LXC (104) — observations & wins
+
+Confirmed allocation: 16 CPU, 31.25 GiB RAM (7.86 GiB used / 25%), 8 GiB swap (idle), **200 GiB boot disk at 47.7% used** — disk pressure outranks RAM pressure.
+
+30. **Fix the Intel iGPU passthrough.** The container's own notes flag the binding as "likely failing". Once `/dev/dri/{card0,renderD128}` is visible inside the LXC, both TEI and `infinity` can run embeddings on the Arc iGPU via OpenVINO / IPEX-LLM — typically **5–10× faster** than CPU. Equally, Immich's CLIP can be GPU-accelerated. The required config in `/etc/pve/lxc/104.conf`:
+    ```
+    lxc.cgroup2.devices.allow: c 226:0 rwm
+    lxc.cgroup2.devices.allow: c 226:128 rwm
+    lxc.cgroup2.devices.allow: c 29:0 rwm
+    lxc.mount.entry: /dev/dri/card0       dev/dri/card0       none bind,optional,create=file
+    lxc.mount.entry: /dev/dri/renderD128  dev/dri/renderD128  none bind,optional,create=file
+    lxc.idmap: u 0 100000 65536
+    lxc.idmap: g 0 100000 65536
+    lxc.idmap: g 44 44 1            # video group on host
+    lxc.idmap: g 104 104 1          # render group on host
+    ```
+    Then inside the container: `usermod -aG video,render <docker-user>` and run TEI with `--device cuda` replaced by the OpenVINO build (`text-embeddings-inference:cpu-1.5-openvino`). Not needed for Phase-3.1's volume but a clean upgrade path.
+31. **Match the homelab-wide UNAS storage convention — host bind-mount of `/mnt/pve/unas/services/<svc>/<vol>`.** Verified via the running Karakeep stack (Q19): every container in LXC 104 binds its persistent data into `/mnt/pve/unas/services/<svc>/...` directly, no `driver_opts`, no CIFS, no credentials in compose. Nexa follows the same pattern. Targets:
+    - `/mnt/pve/unas/services/nexa/qdrant/` — Qdrant data dir.
+    - `/mnt/pve/unas/services/nexa/tei-cache/` — embedding model cache (keeps multi-GB models off the boot disk).
+    - `/mnt/pve/unas/services/nexa/graphdb/` — Phase-3.4 RDF store.
+    - `/mnt/pve/unas/backup/nexa/snapshots/qdrant/<date>/` — daily Qdrant snapshots before rsync to S3 (Phase 3.3 — Q12 open). Mirrors the `backup/<svc>/` pattern used by Home Assistant / Immich.
+    - **n8n executions retention**: `EXECUTIONS_DATA_PRUNE=true`, `EXECUTIONS_DATA_MAX_AGE=168`.
+    - **Monthly `docker image prune --all --filter "until=720h"`** to clear dangling layers.
+
+    Pre-deploy step: `mkdir -p /mnt/pve/unas/services/nexa/{qdrant,tei-cache,graphdb}` and `mkdir -p /mnt/pve/unas/backup/nexa/snapshots/{qdrant,graphdb}` on the docker LXC. Then the compose volumes block is just `- /mnt/pve/unas/services/nexa/<vol>:/<container-path>`. Concrete example in [09-deployment §Step 3](./09-deployment.md#step-3--self-hosted-embeddings-tei).
+
+    Secrets go in the stack's `.env` next to the compose (Karakeep convention: `env_file: .env`). Vaultwarden is the long-term source-of-truth for those secrets ([12/#11](#11)) but isn't required day-one. The earlier proposal of mounting SMB as a docker volume is **withdrawn** ([12/#27](#27)) — it was an over-fitting to the Nextcloud-specific NFS issue.
+32. **The LXC has its own 8 GiB swap.** Combined with the host's 31 GiB, that's a lot of swap for guests that should never page. Drop the LXC swap allocation to 1–2 GiB (`pct set 104 -swap 2048`) — frees disk on the LVM-thin pool and forces issues to surface earlier rather than silently swap.
+33. **Stacks are managed in Arcane; Dockge is stale.** The LXC was originally provisioned with the Dockge helper-script template, but the user moved on to **Arcane** as the day-to-day docker manager. Deployment of the Nexa stack therefore goes through Arcane, not Dockge. Cleanup task: tar `services/dockge/` (if it exists) into `backup/dockge/`, retire the Dockge container, drop the stale data dir. **Dozzle** stays — it's the log viewer, not a manager, so it isn't redundant with Arcane.
+34. **Untriaged local mail on the LXC.** Console shows `You have new mail.` at login — the system mail spool on `/var/mail/root` has unread messages, almost always cron job failures. `mailx` or `mutt` to inspect, then either fix the failing job or send the spool to `nexa.system` ntfy via a tiny aliases entry (`root: |/usr/local/bin/spool-to-ntfy.sh`).
+
+## Housekeeping campaign (cross-cutting, do together)
+
+These three are inter-related — picking them up as one campaign is cheaper than chasing each individually, because the audit step is the same. They also map cleanly onto **[Phase 6 (Nexa as homelab steward)](./02-roadmap.md#phase-6--nexa-as-homelab-steward)**: once Nexa can poll Arcane, diff against the documented state and emit actionable findings, items #35–37 become semi-automatic — Nexa proposes the migrations rather than us hunting them down.
+
+35. **Consolidate Postgres instances.** Today there are at least four independent Postgres containers running — visible from Arcane: `immich_postgres`, `lobe-postgres`, `litellm_db`, `paperless-ngx-db-1` (Karakeep uses Meilisearch + maybe SQLite, separate). Each idles around 100–300 MB RAM and has its own backup story. Two paths:
+    - **Single shared cluster** (`pgsql` container with one role per app, one database per app). Most modern apps support `DATABASE_URL` → just point them at the shared instance. Saves ~600 MB–1 GB RAM and consolidates backups to one pg_dump cron.
+    - **Or** migrate the smallest ones to SQLite (LiteLLM has SQLite mode; Paperless does too) and keep Postgres only for Immich. Same outcome, less migration risk.
+
+    Pre-step: list every running container with `docker ps --format '{{.Names}}\t{{.Image}}' | grep -i 'postgres\|mariadb\|mysql'` to inventory exactly what's running.
+
+36. **UNAS-integration audit.** `/mnt/pve/unas/services/<svc>/` is the homelab convention (host bind-mount, no driver opts — see #31). Not every container follows it yet. Walk every Arcane stack and check the `volumes:` block: any `- /var/lib/docker/...` or anonymous-volume entry is non-compliant. Suspected non-compliant (need verification):
+    - `qdrant_scientific` — vector data possibly on local boot disk; **critical to verify** before Phase-3.1 piles on a `nexa_knowledge_text` collection.
+    - `litellm_db`, `lobe-postgres`, `lobe-redis` — DB containers, persistent state.
+    - `memos` — the user-facing notes app; loss = data loss.
+    - `n8n` — workflows + executions DB.
+    - `audiobookshelf` — listening progress + library metadata.
+    - the `*-mcp` containers — likely stateless (cache only), low priority.
+
+    Output: a one-page table `service | persistent? | currently bound to | should be bound to`. Then migrate the non-compliant ones one-by-one (stop → rsync data to `services/<svc>/` on UNAS → re-create stack with the new bind → verify → keep the old volume for 7 days as a rollback). Lock the convention for any new stack going forward.
+
+37. **3-2-1 backup tiering: warm on-site (S3) + cold off-site.**
+    `s3.nuclide.systems` is already up but it's **on-site** — same building, same power, same (in-)susceptibility to fire / theft / ransomware. By itself it's a *warm* tier, not a disaster-recovery copy. The full design is two tiers:
+
+    **Warm tier — `s3.nuclide.systems` (already exists, just needs a bucket):**
+    - **Restic / borg** repos for `backup/home-assistant/`, `backup/immich/`, `backup/nextcloud/`, future `backup/nexa/`. Backrest already orchestrates Borg — just add the S3 destination.
+    - **Qdrant + GraphDB snapshots** flow UNAS → S3 daily.
+    - Resolves [Q12](./11-open-questions.md#q12) once the bucket name + access key are set.
+
+    **Cold tier — off-site provider (decision pending — see [Q20](./11-open-questions.md#q20)):**
+    - **Jottacloud "Unlimited"** (~€9.50/mo, EU/Norway, soft-cap ~5 TB) — user's stated candidate. Best price/value at current 2 TB; reach soft cap in ~10 years. Use `rclone jottacloud:` or native `jotta-cli`.
+    - **Hetzner Storage Box BX21** (€13/mo, 5 TB EU/DE) — predictable quota, native Borg/Restic/SFTP. Cheapest predictable EU alternative.
+    - **Backblaze B2** (~$12/mo for 2 TB, S3-compatible, US) — cheapest with the widest tooling support; egress is paid (~$10/TB) which only bites during *full* restores.
+    - **rsync.net** (~$30/mo) — ZFS send/recv natively; overkill unless you want pool replication.
+    - **Storj DCS** ($4/TB/mo, decentralized, S3-compatible) — newer ecosystem.
+
+    **Always encrypt before upload** regardless of provider — `restic` or `rclone crypt` over the chosen remote. The provider sees only ciphertext blobs. Key material lives in Vaultwarden + a printed-paper offline copy.
+
+    **Tiering & cadence:**
+    ```
+    [Source]   UNAS RAID-6 + native snapshots (#38)
+                 │ daily restic/borg
+                 ▼
+    [Warm]     s3.nuclide.systems (on-site, fast restore)
+                 │ weekly rclone copy + crypt
+                 ▼
+    [Cold]     Off-site (Jottacloud / B2 / Hetzner)  ← satisfies the "1" in 3-2-1
+    ```
+
+    **What goes off-site (priority order):**
+    1. Immich photo originals — irreplaceable.
+    2. `media/documents/`, `_sortMe/Downloads/`, Nextcloud user data — irreplaceable.
+    3. Memos DB, n8n workflows, Nexa Qdrant + GraphDB snapshots — replicable from sources but expensive to redo.
+    4. Vaultwarden DB — *cryptographically* sensitive but small; explicitly include.
+
+    **What does not need off-site:** movies, music, audiobooks, ROMs, derived caches (Immich thumbnails, encoded-video). Those re-download or regenerate.
+
+    Pre-deploy step: choose one provider, create a test bucket/folder, dry-run a `restic init` + `restic backup` of `backup/nexa/` first as a smoke test before pointing the heavyweight repos at it.
+
+38. **Configure UNAS Pool snapshots.** The UniFi Drive dashboard shows the storage-pool snapshot schedule as "Click to Setup" — i.e. **not configured**. RAID 6 protects against drive failure, not against an `rm -rf` from a misbehaving container or a Nextcloud user mass-delete. Cheap fix: set a daily snapshot with 7-day retention + a weekly with 4-week retention on Pool 1. Native to UniFi Drive, no agent needed. **Highest-leverage data-protection change in the homelab right now** — costs nothing, recovers everything.
+
+39. **Use UNAS native snapshots for fast Nexa rollback** once #38 is set. Nexa workflows that mutate large state (re-embedding the whole vault, graph rebuild, list-config rewrite) can `pre-snapshot → operate → verify → release` against the same UniFi Drive snapshots. Cheaper and faster than restoring from S3.
@@ -0,0 +1,96 @@
+# 13 — Information Wishlist
+
+What additional system inventory would sharpen future decisions, packaged as the **smallest set of paste-and-run tasks** that still answers everything material. Each task is independent — run any subset, in any order.
+
+Each task header tells you **exactly where to run it** (which shell or which UI). Output goes into a Memos draft, a comment in this conversation, or `docs/inventory/<NN>-<slug>.txt` — whichever is easiest.
+
+---
+
+## ~~Task 1 — Stack inventory + reference compose~~ ✅ DONE
+
+User pasted the Karakeep compose. Q19 resolved → host bind-mount of `/mnt/pve/unas/services/<svc>/<vol>` is the convention. Nexa stack updated in [docs/09 §Step 3](./09-deployment.md#step-3--self-hosted-embeddings-tei). The `docker ps -a` half (running-container inventory) is still useful when we get to housekeeping #36 (UNAS-integration audit) — but that's not blocking now.
+
+---
+
+## Task 2 — Storage map (Proxmox + docker)
+
+📍 **Where:** *Two shells* — first the **Proxmox host** (Datacenter → `nuc` → **Shell**, or `ssh root@192.168.1.20`), then back into the **LXC 104 console**.
+
+Tells us which Proxmox storage backs what, and which docker volumes are local vs. SMB.
+
+```bash
+# (a) on the Proxmox host (192.168.1.20):
+cat /etc/pve/storage.cfg
+cat /etc/pve/lxc/104.conf
+```
+
+```bash
+# (b) on LXC 104 (192.168.1.40):
+docker volume ls
+ls -l /dev/dri/      # confirms whether iGPU passthrough actually works
+```
+
+**Unblocks:** optimization #30 (iGPU), #36 (UNAS audit), B6/B7/C17.
+
+---
+
+## Task 3 — Postgres / DB workload inventory
+
+📍 **Where:** **LXC 104 console** (same shell as Task 1).
+
+Direct input to housekeeping #35 (consolidate postgres instances).
+
+```bash
+for c in $(docker ps --format '{{.Names}}' | grep -iE 'postgres|mariadb|mysql|_db$'); do
+  echo "=== $c ==="
+  docker exec "$c" sh -c 'psql -U postgres -l 2>/dev/null || mysql -e "show databases" 2>/dev/null'
+done
+```
+
+**Unblocks:** #35 (consolidate vs. migrate-to-SQLite decision).
+
+---
+
+## Task 4 — LiteLLM model list for the Nexa key
+
+📍 **Where:** *Either* the **LiteLLM admin UI** (one screenshot) *or* any shell with `$SAIA_API_KEY` exported.
+
+- **Screenshot path:** open `https://ai.nuclide.systems` (Lobehub) → Settings → Model List, filtered to the Nexa virtual key. Screenshot the model rows.
+- **CLI path:** any shell on your PC or the LXC, with `SAIA_API_KEY` set:
+  ```bash
+  curl -sH "Authorization: Bearer $SAIA_API_KEY" \
+    https://ai.nuclide.systems/v1/models | jq '.data[].id'
+  ```
+
+**Unblocks:** Q18 follow-up — which embedding model SAIA proxies and at what dim, so we can decide if any flow can short-circuit TEI.
+
+---
+
+## Task 5 — S3 archive credentials
+
+📍 **Where:** **`s3.nuclide.systems` admin UI** in your browser (it's already proxied via Zoraxy — same login as the rest of the homelab).
+
+Walk to: **Buckets** → either pick an existing Nexa-suitable bucket or create one called `nexa` → note the bucket name. Then **Access Keys** → create a key named `nexa-snapshots` with read/write on that bucket → drop the access-key + secret into Vaultwarden under "Nexa S3", and reply here with **just the bucket name** (the secret stays in Vaultwarden).
+
+**Unblocks:** Q12, housekeeping #37 (S3 archive tier), Phase-3.3.
+
+---
+
+## Task 6 — Reverse-proxy + DNS authority *(only if needed)*
+
+📍 **Where:** two browser UIs.
+
+- **Zoraxy** (`http://192.168.1.4:8000`) → HTTP Proxy → either click "Export" if available, or take a full screenshot of the table.
+- **AdGuard** (`http://192.168.1.20` LXC 102 web UI) → Filters → DNS Rewrites → screenshot.
+
+Skip unless we hit a routing surprise during Phase 1.
+
+---
+
+## When something else is needed
+
+The smaller items (n8n credentials list, Memos webhook config, smartctl, sample of `_sortMe/`, what cron is failing) only matter when we touch that specific area. The agent will ask for them at the moment they're needed, with the same "📍 Where" framing.
+
+## Self-serve once Phase 6 ships
+
+Once [Phase 6 — Nexa as homelab steward](./02-roadmap.md#phase-6--nexa-as-homelab-steward) lands, Nexa runs Tasks 1–3 itself on a schedule and folds the results into a daily drift report. This wishlist becomes a Nexa-managed surface (`#nexa:wishlist-status`) rather than something the user has to remember.
@@ -0,0 +1,51 @@
+# NEXA Documentation
+
+**Neural Nexus for Information & Automation** — the central nervous system that ties Memos, n8n, SAIA (LiteLLM), Nextcloud and a vector store into one assistant.
+
+This is the documentation entry point. Read top-to-bottom for first-time setup, or jump to the section you need.
+
+---
+
+## Table of Contents
+
+| # | Document | Read when… |
+|---|----------|------------|
+| 01 | [Vision & Scope](./01-vision-and-scope.md) | You want to understand *what* Nexa is and isn't. |
+| 02 | [Roadmap & Phases](./02-roadmap.md) | You want to know the implementation order. |
+| 03 | [Architecture Overview](./03-architecture.md) | You need a one-page mental model. |
+| 04 | [Integration Matrix](./04-integration-matrix.md) | You're wiring up a new data source or mapping work-vs-personal flows. |
+| 05 | [Command System](./05-command-system.md) | You want to know what `#nexa:*` commands do. |
+| 06 | [Classification Logic](./06-classification-logic.md) | You're tuning the work/personal router. |
+| 07 | [Workflow Spec — Task Router](./07-workflow-spec.md) | You're building the Phase-2 router workflow. |
+| 08 | [GraphRAG Architecture](./08-graphrag-architecture.md) | You're working on Phase 3 (Qdrant + Graph). |
+| 09 | [Deployment](./09-deployment.md) | You're bringing Nexa up on the real infrastructure. |
+| 10 | [Operations](./10-operations.md) | You need backup, monitoring or troubleshooting. |
+| 11 | [Open Questions (user-info-required)](./11-open-questions.md) | Items the user still has to answer before progress. |
+| 12 | [Optimization Opportunities](./12-optimization-opportunities.md) | Ideas worth considering for the wider homelab. |
+| 13 | [Information Wishlist](./13-information-wishlist.md) | What additional system inventory would sharpen future decisions. |
+
+---
+
+## Reading paths
+
+- **First-time installer:** 01 → 03 → 09 → 10 → 11
+- **Workflow author:** 04 → 05 → 07 → 06
+- **Phase-3 work (memory):** 08 → 09 (§ Phase 3 add-on)
+- **Stakeholder / quick read:** 01 → 02 → 12
+
+---
+
+## Repository layout
+
+```
+nexa/
+├── README.md                  → points here
+├── docs/                      → you are here
+└── nexa-core/                 → the actual project
+    ├── ai-prompts/            → SAIA system prompts
+    ├── config/                → runtime config (YAML, JSON schema)
+    ├── n8n-workflows/         → exported workflows, version-controlled
+    └── scripts/               → automation helpers
+```
+
+Source-of-truth for *runnable* config stays in `nexa-core/`. Documentation lives here in `docs/`.
@@ -1,629 +0,0 @@
-# NEXA Deployment Guide
-
-## 🚀 Architektur-Überblick
-
-```
-┌─────────────────────────────────────────────────┐
-│         MEMOS (Port 5230)                       │
-│    Interface, Voice-Input, Webhooks             │
-└────────────────────┬────────────────────────────┘
-                     │
-         ┌───────────┼───────────┐
-         ↓           ↓           ↓
-    ┌────────┐  ┌────────┐  ┌──────────┐
-    │  n8n   │  │ SAIA   │  │ Nextcloud│
-    │Logic   │  │LiteLLM │  │Tasks/Mail│
-    │7879    │  │4000    │  │80/443    │
-    └────┬───┘  └────┬───┘  └─────┬────┘
-         │           │            │
-    ┌────┴───────────┼────────────┴────┐
-    ↓                ↓                  ↓
-┌─────────┐   ┌────────────┐   ┌──────────────┐
-│ QDRANT  │   │ GraphDB    │   │ Obsidian     │
-│Vector   │   │ (Ontotext) │   │(local sync)  │
-│6333     │   │7200        │   │              │
-└─────────┘   └────────────┘   └──────────────┘
-```
-
---
-
-## 📋 Voraussetzungen
-
-### Hardware
- **CPU**: Min. 4 Cores (empfohlen 8)
- **RAM**: Min. 16 GB (empfohlen 32 GB)
- **Storage**: Min. 100 GB SSD (für Datenbanken & Backups)
- **Network**: Stabile Verbindung, HTTPS-ready
-
-### Software
- Docker & Docker Compose (Version 20.10+)
- Git
- Bash
- curl/wget
- `.env` Datei aus `.env.example` (mit Secrets gefüllt)
-
-### Accounts & Credentials
- Nextcloud Instanz mit Admin-Zugang
- OpenAI API-Key (für SAIA/LiteLLM)
- Obsidian Vault Zugang lokalem Filesystem
-
---
-
-## 🐳 Schritt 1: Docker Compose Setup
-
-### 1.1 Repository klonen
-
-```bash
-git clone https://github.com/noheton/nexa.git
-cd nexa/nexa-core
-```
-
-### 1.2 .env konfigurieren
-
-```bash
-cp .env.example .env
-# WICHTIG: Alle Secrets eintragen!
-# - MEMOS_API_KEY
-# - SAIA_API_KEY
-# - NC_APP_PASSWORD
-# - QDRANT_API_KEY
-# - GRAPHDB_PASSWORD
-nano .env
-```
-
-### 1.3 docker-compose.yml erstellen
-
-```bash
-cat > docker-compose.yml << 'EOF'
-version: '3.8'
-
-services:
-  # ===== MEMOS (Interface) =====
-  memos:
-    image: neosmemo/memos:latest
-    container_name: nexa-memos
-    ports:
-      - "5230:5230"
-    volumes:
-      - ./data/memos:/root/.memos
-    environment:
-      MEMOS_PORT: "5230"
-      MEMOS_DRIVER: sqlite
-      MEMOS_DSN: /root/.memos/memos.db
-    networks:
-      - nexa
-    restart: unless-stopped
-
-  # ===== n8n (Workflow Engine) =====
-  n8n:
-    image: n8nio/n8n:latest
-    container_name: nexa-n8n
-    ports:
-      - "5678:5678"
-    volumes:
-      - ./data/n8n:/home/node/.n8n
-      - ./n8n-workflows:/workflows
-    environment:
-      N8N_BASIC_AUTH_ACTIVE: "true"
-      N8N_BASIC_AUTH_USER: "${N8N_USER:-admin}"
-      N8N_BASIC_AUTH_PASSWORD: "${N8N_PASSWORD:-nexa_secure_pass}"
-      N8N_HOST: "${N8N_DOMAIN:-localhost}"
-      N8N_PORT: "5678"
-      N8N_PROTOCOL: https
-      N8N_WEBHOOK_URL: "https://${N8N_DOMAIN:-localhost}/webhook"
-      GENERIC_TIMEZONE: Europe/Berlin
-      DB_TYPE: sqlite
-      DB_SQLITE_PATH: /home/node/.n8n/nexa.db
-    networks:
-      - nexa
-    restart: unless-stopped
-    depends_on:
-      - memos
-
-  # ===== QDRANT (Vector DB) =====
-  qdrant:
-    image: qdrant/qdrant:latest
-    container_name: nexa-qdrant
-    ports:
-      - "6333:6333"
-    volumes:
-      - ./data/qdrant:/qdrant/storage
-    environment:
-      QDRANT_API_KEY: "${QDRANT_API_KEY}"
-    networks:
-      - nexa
-    restart: unless-stopped
-
-  # ===== GraphDB (Ontotext SPARQL) =====
-  graphdb:
-    image: ontotext/graphdb:10-ee
-    container_name: nexa-graphdb
-    ports:
-      - "7200:7200"
-    volumes:
-      - ./data/graphdb:/opt/graphdb/data
-      - ./config/graphdb-init.ttl:/graphdb-import/import.ttl
-    environment:
-      GDB_JAVA_OPTS: "-Xmx8g -Xms4g"
-      GDB_PASSWORD: "${GRAPHDB_PASSWORD}"
-    networks:
-      - nexa
-    restart: unless-stopped
-
-  # ===== SAIA / LiteLLM Proxy (optional - wenn lokal) =====
-  # (Falls SAIA extern gehostet: nicht nötig)
-
-networks:
-  nexa:
-    driver: bridge
-
-volumes:
-  nexa_memos:
-  nexa_n8n:
-  nexa_qdrant:
-  nexa_graphdb:
-EOF
-```
-
---
-
-## 🔧 Schritt 2: Individuelle Service-Konfiguration
-
-### 2.1 MEMOS Initialisierung
-
-```bash
-# Nach memos startup (ca. 30s)
-curl -X POST http://localhost:5230/api/v1/auth/signup \
-  -H "Content-Type: application/json" \
-  -d '{
-    "username": "nexa",
-    "password": "secure_password"
-  }'
-
-# API-Token generieren
-TOKEN=$(curl -X POST http://localhost:5230/api/v1/auth/signin \
-  -H "Content-Type: application/json" \
-  -d '{"username":"nexa","password":"secure_password"}' \
-  | jq -r '.data.token')
-
-echo "MEMOS_API_KEY=$TOKEN" >> .env
-```
-
-### 2.2 Qdrant Konfiguration
-
-```bash
-# Warte auf Qdrant startup
-sleep 10
-
-# Erstelle Collection für Nexa
-curl -X PUT "http://localhost:6333/collections/nexa_knowledge" \
-  -H "Content-Type: application/json" \
-  -H "api-key: ${QDRANT_API_KEY}" \
-  -d '{
-    "vectors": {
-      "size": 1536,
-      "distance": "Cosine"
-    },
-    "optimizers_config": {
-      "deleted_threshold": 0.2,
-      "vacuum_threshold": 0.5,
-      "default_segment_number": 5,
-      "max_segment_number": 30,
-      "memmap_threshold": 268435456,
-      "indexing_threshold": 20000,
-      "flush_interval_sec": 10,
-      "max_optimization_threads": 4
-    }
-  }'
-
-echo "✅ Qdrant Collection erstellt"
-```
-
-### 2.3 GraphDB Initialisierung
-
-```bash
-# Warte auf GraphDB startup
-sleep 15
-
-# Erstelle Repository
-GRAPHDB_URL="http://localhost:7200"
-
-curl -X POST "$GRAPHDB_URL/rest/repositories" \
-  -H "Content-Type: application/json" \
-  -u "admin:${GRAPHDB_PASSWORD}" \
-  -d '{
-    "id": "nexa_knowledge",
-    "title": "Nexa Knowledge Graph",
-    "type": "free",
-    "params": {
-      "baseURL": {
-        "label": "Base URL",
-        "value": "http://nexa.local/"
-      },
-      "defaultLanguage": {
-        "label": "Default language",
-        "value": "en"
-      }
-    }
-  }'
-
-echo "✅ GraphDB Repository erstellt"
-```
-
-### 2.4 n8n Workflows Import
-
-```bash
-# Warte auf n8n startup (ca. 60s)
-sleep 60
-
-# Importiere Discovery Workflow
-curl -X POST http://localhost:5678/api/v1/workflows \
-  -H "Content-Type: application/json" \
-  -u "admin:${N8N_PASSWORD}" \
-  -d @n8n-workflows/phase-1/1_1_discovery_workflow.json
-
-# Importiere Memos Bridge
-curl -X POST http://localhost:5678/api/v1/workflows \
-  -H "Content-Type: application/json" \
-  -u "admin:${N8N_PASSWORD}" \
-  -d @n8n-workflows/phase-1/1_2_memos_bridge_v2.json
-
-# Importiere Email Butler
-curl -X POST http://localhost:5678/api/v1/workflows \
-  -H "Content-Type: application/json" \
-  -u "admin:${N8N_PASSWORD}" \
-  -d @n8n-workflows/phase-2/2_1_email_butler.json
-
-echo "✅ n8n Workflows importiert"
-```
-
---
-
-## 🚀 Schritt 3: Deployment starten
-
-### 3.1 Docker Compose Up
-
-```bash
-docker-compose up -d
-
-# Logs überwachen
-docker-compose logs -f
-```
-
-### 3.2 Health Checks
-
-```bash
-# Health Check Script
-check_service() {
-  local name=$1
-  local url=$2
-  echo "Checking $name..."
-  if curl -s "$url" > /dev/null; then
-    echo "✅ $name: OK"
-  else
-    echo "❌ $name: FAILED"
-  fi
-}
-
-sleep 30
-
-check_service "Memos" "http://localhost:5230"
-check_service "n8n" "http://localhost:5678"
-check_service "Qdrant" "http://localhost:6333/health"
-check_service "GraphDB" "http://localhost:7200/health"
-
-echo ""
-echo "🎯 Service URLs:"
-echo "  - Memos: http://localhost:5230"
-echo "  - n8n: http://localhost:5678"
-echo "  - Qdrant: http://localhost:6333"
-echo "  - GraphDB: http://localhost:7200"
-```
-
---
-
-## ⚙️ Schritt 4: Konfiguration via Command System
-
-### 4.1 Discovery-Workflow triggern
-
-```bash
-# In Memos Memo erstellen:
-# #nexa:config
-
-# Oder via API:
-curl -X POST http://localhost:5678/api/v1/workflows/run \
-  -H "Content-Type: application/json" \
-  -u "admin:${N8N_PASSWORD}" \
-  -d '{
-    "workflowId": "discovery-workflow-id"
-  }'
-```
-
-### 4.2 Automatische Konfiguration laden
-
-Nach erfolgreichem Discovery werden Nextcloud-Listen-IDs:
-
-```bash
-# Es wird automatisch aktualisiert in:
-# - Qdrant: als Metadata
-# - n8n: als Umgebungsvariablen
-# - Memos: als Confirmation-Memo
-```
-
---
-
-## 🔐 Schritt 5: Reverse Proxy Setup (Production)
-
-### 5.1 Nginx Configuration
-
-```bash
-cat > /etc/nginx/sites-available/nexa.conf << 'EOF'
-upstream memos_backend {
-    server localhost:5230;
-}
-
-upstream n8n_backend {
-    server localhost:5678;
-}
-
-upstream qdrant_backend {
-    server localhost:6333;
-}
-
-upstream graphdb_backend {
-    server localhost:7200;
-}
-
-server {
-    listen 443 ssl http2;
-    server_name nexa.yourdomain.com;
-
-    ssl_certificate /etc/letsencrypt/live/nexa.yourdomain.com/fullchain.pem;
-    ssl_certificate_key /etc/letsencrypt/live/nexa.yourdomain.com/privkey.pem;
-    ssl_protocols TLSv1.2 TLSv1.3;
-    ssl_ciphers HIGH:!aNULL:!MD5;
-
-    # MEMOS
-    location / {
-        proxy_pass http://memos_backend;
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-        proxy_read_timeout 3600s;
-        proxy_send_timeout 3600s;
-    }
-
-    # n8n
-    location /n8n/ {
-        proxy_pass http://n8n_backend/;
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-        proxy_http_version 1.1;
-        proxy_set_header Upgrade $http_upgrade;
-        proxy_set_header Connection "upgrade";
-    }
-
-    # Qdrant (nur intern, wenn nötig)
-    location /qdrant/ {
-        allow 10.0.0.0/8;
-        deny all;
-        proxy_pass http://qdrant_backend/;
-    }
-
-    # GraphDB (nur intern)
-    location /graphdb/ {
-        allow 10.0.0.0/8;
-        deny all;
-        proxy_pass http://graphdb_backend/;
-    }
-
-    # Webhook endpoint für externe Services
-    location /webhook/ {
-        proxy_pass http://n8n_backend/webhook/;
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-    }
-}
-
-server {
-    listen 80;
-    server_name nexa.yourdomain.com;
-    return 301 https://$server_name$request_uri;
-}
-EOF
-
-# Aktivieren
-sudo ln -s /etc/nginx/sites-available/nexa.conf /etc/nginx/sites-enabled/
-sudo nginx -t
-sudo systemctl reload nginx
-```
-
---
-
-## 📊 Schritt 6: Monitoring & Backups
-
-### 6.1 Backup Script
-
-```bash
-cat > scripts/backup_nexa.sh << 'EOF'
-#!/bin/bash
-
-BACKUP_DIR="./backups/$(date +%Y%m%d_%H%M%S)"
-mkdir -p "$BACKUP_DIR"
-
-echo "🔄 Backing up Nexa..."
-
-# Backup Datenbanken
-docker-compose exec -T qdrant tar czf - /qdrant/storage > "$BACKUP_DIR/qdrant.tar.gz"
-docker-compose exec -T graphdb tar czf - /opt/graphdb/data > "$BACKUP_DIR/graphdb.tar.gz"
-docker-compose exec -T memos tar czf - /root/.memos > "$BACKUP_DIR/memos.tar.gz"
-docker-compose exec -T n8n tar czf - /home/node/.n8n > "$BACKUP_DIR/n8n.tar.gz"
-
-# Backup Configs
-cp .env "$BACKUP_DIR/.env.backup"
-cp docker-compose.yml "$BACKUP_DIR/docker-compose.yml.backup"
-
-echo "✅ Backup completed: $BACKUP_DIR"
-
-# Optional: zu S3 hochladen
-# aws s3 sync "$BACKUP_DIR" s3://nexa-backups/$(date +%Y%m%d)/
-EOF
-
-chmod +x scripts/backup_nexa.sh
-
-# Tägliches Backup (cron)
-echo "0 2 * * * /path/to/nexa/scripts/backup_nexa.sh" | crontab -
-```
-
-### 6.2 Health Check Monitoring
-
-```bash
-cat > scripts/monitor_nexa.sh << 'EOF'
-#!/bin/bash
-
-# Monitore Service Status
-SERVICES=("memos" "n8n" "qdrant" "graphdb")
-
-for service in "${SERVICES[@]}"; do
-  if docker-compose ps $service | grep -q "Up"; then
-    echo "✅ $service: Running"
-  else
-    echo "❌ $service: DOWN"
-    # Restart bei Fehler
-    docker-compose restart $service
-  fi
-done
-EOF
-
-chmod +x scripts/monitor_nexa.sh
-
-# Alle 5 Minuten
-echo "*/5 * * * * /path/to/nexa/scripts/monitor_nexa.sh" | crontab -
-```
-
---
-
-## 🧪 Schritt 7: Validation & Testing
-
-### 7.1 End-to-End Test
-
-```bash
-cat > scripts/test_nexa.sh << 'EOF'
-#!/bin/bash
-
-echo "🧪 Testing Nexa Installation..."
-
-# Test 1: Memos API
-echo "Test 1: Memos API"
-if curl -s http://localhost:5230/api/v1/auth/status | jq . > /dev/null 2>&1; then
-  echo "✅ Memos: OK"
-else
-  echo "❌ Memos: FAILED"
-fi
-
-# Test 2: n8n API
-echo "Test 2: n8n API"
-if curl -s -u "admin:${N8N_PASSWORD}" http://localhost:5678/api/v1/workflows | jq . > /dev/null 2>&1; then
-  echo "✅ n8n: OK"
-else
-  echo "❌ n8n: FAILED"
-fi
-
-# Test 3: Qdrant Collection
-echo "Test 3: Qdrant Collection"
-if curl -s -H "api-key: ${QDRANT_API_KEY}" http://localhost:6333/collections/nexa_knowledge | jq . > /dev/null 2>&1; then
-  echo "✅ Qdrant: OK"
-else
-  echo "❌ Qdrant: FAILED"
-fi
-
-# Test 4: GraphDB Repository
-echo "Test 4: GraphDB Repository"
-if curl -s -u "admin:${GRAPHDB_PASSWORD}" http://localhost:7200/repositories | jq . > /dev/null 2>&1; then
-  echo "✅ GraphDB: OK"
-else
-  echo "❌ GraphDB: FAILED"
-fi
-
-echo ""
-echo "🎯 Create Test Memo:"
-MEMO=$(curl -s -X POST http://localhost:5230/api/v1/memos \
-  -H "Authorization: Bearer ${MEMOS_API_KEY}" \
-  -H "Content-Type: application/json" \
-  -d '{"content": "Test memo - #nexa:config"}' | jq -r '.id')
-
-echo "✅ Test Memo created: $MEMO"
-echo "Check Memos UI to verify webhook triggers Discovery"
-EOF
-
-chmod +x scripts/test_nexa.sh
-./scripts/test_nexa.sh
-```
-
---
-
-## 🆘 Troubleshooting
-
-### Problem: Memos kann sich nicht mit n8n verbinden
-
-```bash
-# Überprüfe n8n Webhook URL in Memos config
-curl http://localhost:5678/webhook/memos
-
-# Falls 404: Workflow ist nicht aktiviert/deployed
-docker-compose logs n8n | grep webhook
-```
-
-### Problem: GraphDB startet nicht
-
-```bash
-# Memory-Limit erhöhen
-docker-compose exec graphdb -e "GDB_JAVA_OPTS=-Xmx16g -Xms8g" restart
-
-# Logs checken
-docker-compose logs graphdb
-```
-
-### Problem: Qdrant Collection leer
-
-```bash
-# Überprüfe ob Memos Bridge Workflow läuft
-docker-compose logs n8n | grep "memos_bridge"
-
-# Manuell test
-curl -X POST http://localhost:5230/api/v1/memos \
-  -H "Authorization: Bearer ${MEMOS_API_KEY}" \
-  -d '{"content": "- [ ] Test task #nexa"}'
-```
-
---
-
-## 📈 Next Steps
-
-1. ✅ **Phase 1 deployt**: Memos Bridge & Discovery laufen
-2. ⏳ **Phase 2 aktivieren**: Email Butler (wenn Nextcloud Mail konfiguriert)
-3. ⏳ **Phase 3 setup**: Qdrant Embedding Pipeline
-4. ⏳ **Phase 4 integration**: GraphRAG Queries testen
-5. ⏳ **Phase 5**: Home Assistant Voice Integration
-
---
-
-## 📞 Support & Debugging
-
-```bash
-# Alle Logs in eine Datei sammeln
-docker-compose logs > deployment_logs.txt
-
-# Spezifischer Service
-docker-compose logs n8n --tail 100
-
-# Wiederherstellung aus Backup
-./scripts/restore_nexa.sh backup/2024-01-15_120000/
-```
-
---
-
-**Deployment abgeschlossen! Nexa ist nun betriebsbereit.** 🚀
@@ -1,27 +0,0 @@
-# NEXA: Implementierungs-Fahrplan 🚀
-
-Dieser Plan beschreibt die schrittweise Aktivierung des Nervensystems.
-
-## Phase 1: Die Wirbelsäule (Basis-Konnektivität)
- [ ] **1.1 Memos-n8n Bridge:** Webhook-Anbindung und Filter-Logik.
- [ ] **1.2 SAIA-Integration:** LiteLLM Proxy in n8n einbinden (Chat-Funktion via Kommentare).
- [ ] **1.3 Git-Sync:** Automatisches Backup der n8n-Workflows in dieses Repo.
-
-## Phase 2: Die Sinnesorgane (Input-Kanäle)
- [ ] **2.1 Email-Butler:** Automatisierte Filterung und Zusammenfassung der ~20 täglichen Mails.
- [ ] **2.2 RSS Morning Digest:** Täglich kuratierte News-Zusammenfassung in Memos.
- [ ] **2.3 Bluesky-Antenne:** Speichern von gelikten Posts als Wissens-Schnipsel.
-
-## Phase 3: Das Gedächtnis (Qdrant & RAG)
- [ ] **3.1 Embedding-Pipeline:** Automatische Vektorisierung von Memos & Obsidian.
- [ ] **3.2 Context-Retrieval:** Nexa nutzt Qdrant-Wissen für Antworten (#ask).
- [ ] **3.3 S3-Langzeitarchiv:** Backup der Qdrant-Snapshots auf den S3-Server.
-
-## Phase 4: Die Motorik (Organisation & Handeln)
- [ ] **4.1 Nextcloud Task-Sync:** Bidirektionaler Status-Abgleich (Memos <-> NC Tasks).
- [ ] **4.2 Timeboxing-Agent:** Intelligente Kalender-Slot-Vorschläge basierend auf Tasks.
- [ ] **4.3 Karakeep-Kuration:** Automatischer Review-Prozess für gespeicherte Links.
-
-## Phase 5: Alltags-Integration (Feinschliff)
- [ ] **5.1 Home Assistant Voice:** Nexa als Wake-Word Integration.
- [ ] **5.2 System-Monitoring:** Alarme von Proxmox/Backrest direkt in den Memos-System-Feed.
@@ -1,15 +1,17 @@
-# NEXA 🧠
-**The Neural Nexus for Information & Automation**
+# nexa-core

-Nexa ist das zentrale Nervensystem meines IT-Setups.
+Runtime artifacts for Nexa: n8n workflows, configuration, AI prompts, scripts.

-## 🏗 Architektur
- **Interface:** Memos
- **Logic:** n8n
- **Memory:** Qdrant & Obsidian
- **Intelligence:** SAIA (via LiteLLM)
+📖 Documentation lives one level up in [`../docs/`](../docs/index.md).

-## 📁 Struktur
- `n8n-workflows/`: JSON-Exporte der Gehirn-Logik.
- `ai-prompts/`: System-Prompts für Nexa.
- `config/`: Schemata für Qdrant und API-Mappings.
+## Layout
+
+- `n8n-workflows/` — exported workflows (per phase). Imported into the running n8n.
+- `ai-prompts/` — system prompts for SAIA / LiteLLM.
+- `config/` — runtime config (`agents.yaml`, `infra_manifest.yaml`, `qdrant_schema.json`).
+- `scripts/` — automation helpers (workflow backup, etc.).
+- `.env.example` — bootstrap secrets only; runtime config lives in Qdrant `_config` namespace.
+
+## Quickstart
+
+See [`../docs/09-deployment.md`](../docs/09-deployment.md).
@@ -3,11 +3,16 @@ Rolle: Zentrales Nervensystem
 Aufgabe: Überwacht E-Mails, kuratiert Wissen und plant Tasks.

 WICHTIGE LOGIK:
- Tasks müssen strikt zwischen "Work" und "Personal" unterschieden werden.
- Analysiere den Inhalt eines Memos: Bezieht es sich auf professionelle Projekte (Obsidian Context) -> Work List. Bezieht es sich auf Haushalt, Einkäufe oder Freizeit -> Personal List.
- Im Zweifel: Nachfragen via Memos-Kommentar.
+- Tasks werden auf vier Nextcloud-Listen geroutet: "DLR" (Arbeit), "Persönlich", "Einkaufsliste", "Wunschliste".
+- Analysiere den Inhalt eines Memos und entscheide über das Feld "context": "work" | "personal" | "shopping" | "wishes".
+  - work     -> Liste "DLR" (Beruf, Projekte, Meetings, Deadlines, Forschung).
+  - personal -> Liste "Persönlich" (Alltag, Familie, Termine, Behördenkram).
+  - shopping -> Liste "Einkaufsliste" (Lebensmittel, Drogerie, Verbrauchsgüter).
+  - wishes   -> Liste "Wunschliste" (Hobby, Technik, Bücher, Geschenkideen).
+- Listennamen sind dynamisch — bei Bedarf werden weitere Listen vom Runtime-Config eingespeist, dann darfst du auch deren Namen als context vorschlagen.
+- Im Zweifel (Konfidenz < 0.7): Default auf "personal" und Nachfrage via Memos-Kommentar.

 KONSUM-LOGIK:
 - Wenn ein Link von Karakeep kommt, analysiere das Produkt.
- Haushaltswaren/Verbrauchsgüter -> NC_LIST_ID_SHOPPING.
- Besondere Wünsche/Hobby/Technik -> NC_LIST_ID_WISHES.
+- Haushaltswaren/Verbrauchsgüter -> context "shopping".
+- Besondere Wünsche/Hobby/Technik -> context "wishes".
@@ -1,12 +1,24 @@
 {
-  "collection_name": "nexa_knowledge",
+  "collection_name": "nexa_knowledge_text",
  "vector_config": {
-    "size": 1536,
+    "size": 1024,
    "distance": "Cosine"
  },
  "payload_schema": {
-    "source": "keyword",
-    "tags": "keyword",
-    "created_at": "datetime"
+    "source":      "keyword",
+    "source_type": "keyword",
+    "modality":    "keyword",
+    "mime_type":   "keyword",
+    "media_uri":   "keyword",
+    "context":     "keyword",
+    "tags":        "keyword",
+    "graph_iri":   "keyword",
+    "content_hash":"keyword",
+    "created_at":  "datetime"
+  },
+  "_notes": {
+    "vector_size_rationale": "1024 = bge-m3 output. If Q15 resolves to nomic-embed-text-v1.5 instead, rebuild this collection with size: 768.",
+    "modality_field": "Always 'text' in this collection. Forward-compatibility for Phase 3.2 (see qdrant_schema_visual.json).",
+    "graph_iri_field": "IRI of the corresponding nexa:Note in GraphDB. The same value is stored on the GraphDB node as nexa:vectorId pointing back here. This is the cross-pillar bridge."
  }
 }
@@ -0,0 +1,26 @@
+{
+  "collection_name": "nexa_knowledge_visual",
+  "vector_config": {
+    "size": 768,
+    "distance": "Cosine"
+  },
+  "payload_schema": {
+    "source":      "keyword",
+    "source_type": "keyword",
+    "modality":    "keyword",
+    "mime_type":   "keyword",
+    "media_uri":   "keyword",
+    "context":     "keyword",
+    "tags":        "keyword",
+    "graph_iri":   "keyword",
+    "content_hash":"keyword",
+    "created_at":  "datetime"
+  },
+  "_notes": {
+    "status": "PLACEHOLDER — not deployed in Phase 3.1. Created in Phase 3.2.",
+    "vector_size_rationale": "768 = jina-clip-v2 joint text/image space. The same model embeds both text queries and images, so semantic queries against this collection are simple kNN.",
+    "served_by": "Will be served by `infinity` (https://github.com/michaelfeil/infinity) — drop-in replacement for TEI that supports CLIP-family models with the same OpenAI-compatible API.",
+    "modality_field": "'image' for indexed images, 'text' if a text query has been embedded into the visual space for retrieval (rare — usually we embed the text query at search time and don't store it).",
+    "media_uri_field": "Required for image rows. Examples: 'memos://memos/123/attachment/4', 'nextcloud://files/photos/whiteboard-2025-09.jpg', 'obsidian://attachments/diagram.png'."
+  }
+}
@@ -1,16 +0,0 @@
-# Spezifikation: Phase 2 - Task-Router
-
-## 1. Trigger
-* **Typ:** Webhook (Memos)
-* **Filter:** `payload.content` enthält `- [ ]` ODER `#todo`.
-
-## 2. Intelligence Node (SAIA)
-* **Prompt:** "Analysiere folgende Notiz. Gib als JSON zurück: { "context": "work" | "personal", "summary": "string", "urgency": 1-5 }."
-* **Kontext-Zufuhr:** Lade die letzten 5 Obsidian-Projekttitel aus Qdrant als Referenz hoch.
-
-## 3. Switch Node
-* **Route 1:** Context == "work" -> Nextcloud Create Task (List ID: Work).
-* **Route 2:** Context == "personal" -> Nextcloud Create Task (List ID: Personal).
-
-## 4. Feedback Loop
-* Poste die Task-ID und den gewählten Kontext als Kommentar unter das Original-Memo.
@@ -1,131 +0,0 @@
-# Nexa Command System - #nexa:command
-
-Nexa "hört" auf folgende Kommandos in Memos-Kommentaren oder als Memo-Inhalt mit Hashtag:
-
-## 🔧 Konfigurations-Kommandos
-
-### #nexa:config
- **Beschreibung**: Triggert Autodiscovery aller Services (Nextcloud, Qdrant, etc.)
- **Antwort**: Postet Report mit gefundenen Konfigurationen
- **Speichert**: Settings in DynoDB / Qdrant Metadata (nicht in .env)
-
-```
-#nexa:config
-```
-
-**Beispiel-Response:**
-```
-✅ Autodiscovery abgeschlossen:
- Nextcloud Listen: Work (id=123), Personal (id=456), Shopping (id=789), Wishes (id=1011)
- Qdrant Collection: nexa_knowledge (1536 dims, Cosine)
- Nextcloud Mail: 3 Accounts erkannt (Office 365, Gmail, Privat)
-```
-
-### #nexa:status
- **Beschreibung**: Zeigt den aktuellen System-Status
- **Antwort**: Uptime, verbundene Systeme, Memory-Stats
-
-```
-#nexa:status
-```
-
-### #nexa:sync-obsidian
- **Beschreibung**: Triggert sofortige Synchronisierung mit Obsidian Vault
- **Optional Parameter**: `--vault=/path/to/vault` oder `--force` für Neuindexierung
-
-```
-#nexa:sync-obsidian --force
-```
-
-## 📊 Memory & RAG Kommandos
-
-### #nexa:ask [question]
- **Beschreibung**: Semantische Suche in Qdrant (RAG) basierend auf Obsidian + Memos
- **Antwort**: Top-3 Treffer mit Quellen
-
-```
-#nexa:ask Wie implementierten wir das JWT-Middleware-Pattern?
-```
-
-### #nexa:learn [topic]
- **Beschreibung**: Explizit neue Information in Qdrant speichern (mit Tags)
- **Optional**: `--tag=architecture` `--source=obsidian/notes/arch.md`
-
-```
-#nexa:learn Das Routing-Schema unterscheidet Work vs. Personal via SAIA-Kontext-Analyse --tag=architecture
-```
-
-## 🎯 Workflow-Kommandos
-
-### #nexa:route-test [text]
- **Beschreibung**: Testet die Klassifizierung (Work/Personal) ohne Task zu erstellen
-
-```
-#nexa:route-test Muss morgen die Präsentation für den Client fertigstellen
-```
-
-**Response:**
-```
-💬 Klassifizierung (Test-Mode):
- Kontext: WORK
- Vertrauen: 0.95
- Begründung: "Client-Präsentation → professioneller Kontext"
-```
-
-### #nexa:email-digest
- **Beschreibung**: Triggert sofortige Email-Zusammenfassung (sonst tägl. 7 Uhr)
-
-```
-#nexa:email-digest
-```
-
-## 🔐 Admin-Kommandos
-
-### #nexa:reset-config
- **Beschreibung**: Löscht gespeicherte Konfiguration, triggert neuen Autodiscovery
- **Warnung**: Alle benutzerdefinierten Settings werden vergessen
-
-```
-#nexa:reset-config
-```
-
-### #nexa:export-state
- **Beschreibung**: Exportiert aktuellen State als JSON (für Backups)
-
-```
-#nexa:export-state
-```
-
---
-
-## 📝 Implementierung in n8n
-
-Ein **Command Parser** läuft immer mit:
-
-1. **Memos Webhook** empfängt alle Memos
-2. **Regex Check**: Sucht nach `#nexa:command`
-3. **Router**: Versendet an entsprechenden n8n-Workflow
-4. **Antwort**: Postet Reply als Kommentar/Edit
-
-**Command Parser Regex:**
-```
-^#nexa:(\w+)(?:\s+([^\n]*?))?(?:$|\s*--)
-```
-
-Extrahiert: `[command, parameters]`
-
---
-
-## 🎛️ Dynamische Konfigurationsspeicherung
-
-Statt .env zu editieren:
-
-1. **First Run**: `#nexa:config` speichert zu lokalen Metadata
-2. **Speich-Ziel**: 
-   - **Primary**: Qdrant Metadata (als `_config` Namespace)
-   - **Fallback**: `nexa-core/config/runtime_config.json` (gitignored)
-   - **Notfall**: .env (nur initial)
-
-3. **Reload-Logik**: Bei jedem Workflow-Start werden Settings aus Qdrant geladen
-
-Das macht Nexa vollständig selbstständig nach dem initialem Setup!
@@ -1,273 +0,0 @@
-# GraphRAG für Nexa - Strukturelles Wissen & Beziehungen
-
-## 🧠 Zwei-Säulen-Memory-Architektur
-
-Nexa nutzt zwei komplementäre Speicher für vollständiges Verständnis:
-
-### Säule 1: Qdrant (Vector DB) - Semantische Ähnlichkeit
- **Frage**: "Was ist ähnlich, was ist relevant?"
- **Speichert**: Embeddings von Memos, Obsidian-Notes, E-Mail-Digests
- **Suche**: Cosine Similarity über 1536-dimensionale Vektoren
- **Antwort**: Top-k semantisch ähnliche Dokumente (RAG)
-
-**Beispiel:**
-```
-Frage: "Wie war die JWT-Implementation in unserem letzten Projekt?"
-→ Qdrant findet: 10 ähnliche Snippets → Prompt-Context
-```
-
-### Säule 2: Neo4j (Graph DB) - Strukturelle Beziehungen
- **Frage**: "Wer ist beteiligt? Was hängt davon ab? Wie ist es organisiert?"
- **Speichert**: 
-  - **Knoten (Nodes)**: Projects, Tasks, People, Technologies, Dates
-  - **Kanten (Relationships)**: `USES`, `OWNS`, `DEPENDS_ON`, `MENTIONS`, `CREATED_BY`
- **Suche**: Cypher-Queries über Netzwerk-Topologie
- **Antwort**: Pfade, zentrale Knoten, Abhängigkeitsanalyse
-
-**Beispiel:**
-```cypher
-MATCH (tech:Technology)-[USES*]->*(service:Service), 
-      (tech)-[:MENTIONED_IN]->(task:Task)
-WHERE tech.name = "JWT" AND task.status = "DONE"
-RETURN tech, service, task
-```
-
---
-
-## 📊 Neo4j Schema für Nexa
-
-### Node-Typen
-
-```cypher
-(Project {name, startDate, status, priority})
-(Task {title, description, status, urgency: 1-5, context: "work"|"personal"})
-(Person {name, role, email})
-(Technology {name, category: "framework"|"language"|"tool"})
-(Topic {name, domain})
-(File {path, type, lastModified})
-(Note {id, content_hash, created_at})
-```
-
-### Relationship-Typen
-
-| Beziehung | Von | Zu | Beschreibung |
-|-----------|-----|-----------|-------------|
-| `OWNS` | Person | Task/Project | Wer ist verantwortlich |
-| `USES` | Task/Project | Technology | Welche Tech wird verwendet |
-| `DEPENDS_ON` | Task/Project | Task/Project | Hängt davon ab |
-| `CREATED_BY` | Note | Person | Autor einer Notiz |
-| `MENTIONS` | Note/Task | Topic/Technology | Verweist auf |
-| `RELATED_TO` | Task | Task | Zusammenhängend |
-| `CHILD_OF` | Task | Project | Task gehört zu Project |
-| `SCHEDULED_FOR` | Task | Date | Zeitliche Zuordnung |
-
---
-
-## 🔄 Synchronisierungs-Flows
-
-### 1. **Memos → Neo4j** (automatisch beim Erstellen)
-
-Wenn ein Memo mit `- [ ]` erstellt wird:
-
-```
-Memo-Content: "Muss JWT-Middleware für Auth-Service refaktorieren"
-      ↓
-SAIA extrahiert Entitäten:
-  - Technologie: "JWT-Middleware", "Auth-Service"
-  - Kontext: "work"
-  - Urgenz: 3
-      ↓
-Erstelle in Neo4j:
-  - Task node (title="JWT-Middleware refaktorieren")
-  - Technology nodes: JWT, Auth-Service
-  - Relationships: Task -[USES]-> JWT, Task -[USES]-> Auth-Service
-  - Task -[CREATED_BY]-> Me (Person node)
-```
-
-### 2. **Obsidian → Neo4j** (#nexa:sync-obsidian)
-
-Beim Sync von Obsidian-Vault:
-
-```
-File: obsidian/projects/nexa-deployment.md
-      ↓
-Header Struktur wird zu Graph:
-  - Project "Nexa Deployment"
-  - Technologies: Docker, n8n, Nextcloud
-  - Dependencies: "requires infrastructure setup"
-      ↓
-Erstelle:
-  - Project nodes mit Metadata
-  - Hierarchie: Project -[CONTAINS]-> Task -[USES]-> Technology
-```
-
-### 3. **Nextcloud Tasks → Neo4j** (bidirektional)
-
-Wenn Task in Nextcloud erstellt/gelöcht:
-
-```
-Nextcloud Task: "Review JWT implementation" (in Work-List)
-      ↓
-n8n Trigger erkennt Änderung
-      ↓
-Update Neo4j:
-  - Task node status = "active"
-  - Task -[DEPENDS_ON]-> related Task (falls Beziehung existiert)
-```
-
---
-
-## 🤖 GraphRAG Queries - Praktische Anwendungen
-
-### Query 1: "Zeige alle offenen Tasks, die JWT betreffen"
-
-```cypher
-MATCH (tech:Technology {name:"JWT"}),
-      (tech)-[:MENTIONED_IN|USES]-(task:Task),
-      (task)-[:CHILD_OF]->(project:Project)
-WHERE task.status IN ["NEEDS-ACTION", "IN-PROGRESS"]
-RETURN project.name, task.title, task.urgency
-ORDER BY task.urgency DESC
-```
-
-### Query 2: "Von welchen Tasks/Projects hängt Auth-Service ab?"
-
-```cypher
-MATCH path = (dependent)-[:DEPENDS_ON*]->(service:Technology {name:"Auth-Service"})
-RETURN [x IN nodes(path) | x.name], length(path)
-ORDER BY length(path) ASC
-```
-
-### Query 3: "Wer arbeitet an diesem Projekt und auf welchen Technologien?"
-
-```cypher
-MATCH (person:Person)-[:OWNS]->(task:Task)-[:CHILD_OF]->(project:Project {name:"Nexa"}),
-      (task)-[:USES]->(tech:Technology)
-RETURN person.name, collect(task.title), collect(tech.name)
-```
-
-### Query 4: "Was ist seit gestern neu an Technologien/Themen gelernt?"
-
-```cypher
-MATCH (note:Note)-[:MENTIONS]->(topic:Topic)
-WHERE note.created_at > datetime.now() - duration('P1D')
-RETURN DISTINCT topic.name, count(note) as mentions
-ORDER BY mentions DESC
-```
-
---
-
-## 🔗 GraphRAG-Enhanced Answer Generation
-
-Wenn Nutzer `#nexa:ask` fragt:
-
-```
-#nexa:ask Wie stehen die JWT-Tasks zur Deadline?
-                    ↓
-        ┌─────────────┴──────────────┐
-        ↓                            ↓
-    [Qdrant]                    [Neo4j]
-  Semantic                    Structural
-  Search                       Search
-        ↓                            ↓
-  Top-3 Notes                  (JWT)-[DEPENDS_ON]
-  mit ähnlichem               → Connected Tasks
-  Kontext                     → Critical Path
-        ↓                            ↓
-      Combine: Merge + Rank
-      ↓
-  System Prompt (SAIA):
-  "Basierend auf diesem Wissen und diesen Abhängigkeiten, beantworte:"
-      ↓
-  Response mit:
-  - Semantisch relevanter Information (Qdrant)
-  - Strukturellem Kontext (Neo4j)
-  - Abhängigkeitsanalyse
-```
-
---
-
-## 🛠️ n8n Integration (Phase 3)
-
-### Workflow: Graph-Sync Trigger
-
-```
-[Memos Webhook] 
-  ↓
-[Parse Content]
-  ↓
-[SAIA: Extract Entities]
-  ├→ Tasks, Projects, Technologies, People
-  └→ Relationships (uses, depends_on, mentions)
-  ↓
-[Neo4j: Create/Update Nodes & Relationships]
-  ↓
-[Index in Qdrant Metadata: Add graph_node_id]
-```
-
-### Workflow: Question Router
-
-```
-[#nexa:ask Query]
-  ↓
-[Parallel Search]
-  ├→ [Qdrant: Vector Similarity]
-  ├→ [Neo4j: Graph Query (auto-generated Cypher)]
-  └→ [Rank & Merge Results]
-  ↓
-[SAIA: Generate Answer with Context]
-```
-
---
-
-## 📋 Commands für Graph-Management
-
-### #nexa:graph-status
-Zeigt Statistiken der Graph-DB
-```
-#nexa:graph-status
-```
-
-Response:
-```
-📊 Neo4j Graph Status:
- Nodes: 342 (Tasks: 145, Projects: 12, Technologies: 52, Notes: 133)
- Relationships: 1,247
- Density: 0.34
- Most Connected: "JWT-Middleware" (27 connections)
-```
-
-### #nexa:graph-trace [entity]
-Zeigt alle Verbindungen für eine Entität
-```
-#nexa:graph-trace JWT-Middleware
-```
-
-### #nexa:graph-rebuild
-Rekonstruiert Graph aus Obsidian + Memos (einmalig, danach inkrementell)
-```
-#nexa:graph-rebuild --force
-```
-
---
-
-## 🚀 Phase 3 Roadmap (Graph Integration)
-
- [ ] **3.1 Neo4j Setup**: Collection, Constraints, Indexes
- [ ] **3.2 Graph-Sync Workflow**: Automatische Entity Extraction
- [ ] **3.3 GraphRAG Pipeline**: Kombinierte Qdrant + Neo4j Queries
- [ ] **3.4 Dependency Tracker**: Warnt vor zirkulären Dependencies
- [ ] **3.5 Critical Path Analysis**: Berechnet längsten Weg im Graph
-
---
-
-## 💡 Warum zwei DBs?
-
-| Szenario | Qdrant | Neo4j | Kombi |
-|----------|--------|-------|-------|
-| "Welche Note war ähnlich?" | ✅ Best | ❌ | Qdrant |
-| "Welche Tasks blockieren diesen Task?" | ❌ | ✅ Best | Neo4j |
-| "Erkläre mir dieses Projekt umfassend" | ✅ Context | ✅ Structure | **Beide!** |
-| "Finde alle JWT-bezogenen offenen Work" | ✅ Semantic | ✅ Crisp | **Beide!** |
-
-Kombiniert: **Vollständiges Verständnis** statt nur Suchindex oder nur Struktur.
@@ -1,80 +0,0 @@
-📑 Projekt Nexa: Scoping & Vision
-1. Vision & Zielsetzung
-Nexa ist als "Zentrales Nervensystem" konzipiert. Das Ziel ist die Schaffung einer intelligenten Middleware zwischen Input-Quellen (Memos, E-Mail, RSS), Wissensspeichern (Obsidian, Qdrant) und Organisations-Tools (Nextcloud Calendar/Tasks).
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-Kernziele:
-Kognitive Entlastung: Nexa sortiert, filtert und schlägt vor, anstatt nur zu speichern.
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-Kontext-Trennung: Saubere, KI-gestützte Unterscheidung zwischen Privat und Arbeit.
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-Single Point of Interaction: Memos fungiert als primäre Schnittstelle ("The Voice & Ear").
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-Wissens-Synergie: Verknüpfung von flüchtigen Memos mit tiefem Wissen in Obsidian via semantischer Suche.
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-2. Abgrenzung (Scope)
-Um die Komplexität beherrschbar zu halten, wird das Projekt wie folgt abgegrenzt:
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-In-Scope (Was Nexa tut):
-Triaging: Klassifizierung von 20 Mails/Tag (Privat).
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-Task-Routing: Verteilung von Aufgaben auf die richtige Nextcloud-Liste (Work vs. Personal).
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-Scheduling: Vorschlagen von Timeboxen im Arbeitskalender.
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-Memory: Aufbau eines Langzeitgedächtnisses in Qdrant.
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-Monitoring: Aggregation kritischer IT-Alarme (Proxmox, Backrest).
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-Out-of-Scope (Was Nexa NICHT tut):
-Kein direkter Zugriff auf Arbeits-IT (E-Mail/Server).
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-Keine aktive Bearbeitung von Dokumenten (außer Metadaten-Extraktion).
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-Keine Ersetzung von Spezial-UIs (z.B. Arcane oder Portainer für Container-Management).
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-3. Phasenmodell der Entwicklung
-Der Aufbau erfolgt iterativ, um frühzeitig Mehrwert zu generieren.
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-Phase 1: Die Wirbelsäule (Konnektivität)
-Fokus: Datenfluss zwischen Memos, n8n und SAIA.
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-Meilenstein: Nexa antwortet auf Memos und kann einfache Fragen beantworten.
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-Technik: Webhooks, REST-API, LiteLLM-Proxy.
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-Phase 2: Sensorik & Klassifizierung (The Senses)
-Fokus: E-Mail-Filterung und das Routing-System.
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-Meilenstein: Nexa erkennt den Unterschied zwischen "Arbeits-Task" und "Privat-Task" ohne manuelle Tags.
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-Technik: IMAP-Node, n8n-Logic-Router, System-Prompts für Kontext-Analyse.
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-Phase 3: Das semantische Gedächtnis (The Brain)
-Fokus: Anbindung von Qdrant und Obsidian.
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-Meilenstein: RAG (Retrieval Augmented Generation). Nexa beantwortet Fragen basierend auf deinen archivierten Notizen.
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-Technik: Embeddings-Pipeline, Qdrant-Vektor-Suche.
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-Phase 4: Proaktive Motorik (The Assistant)
-Fokus: Kalender-Integration und Timeboxing.
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-Meilenstein: Nexa schlägt morgens proaktiv Fokus-Zeiten im Arbeitskalender vor.
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-Technik: Nextcloud CalDAV/CardDAV Integration, Optimierungs-Logik für freie Slots.
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-Phase 5: Physische Präsenz (Voice & Alarms)
-Fokus: Home Assistant Voice & Monitoring-Integration.
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-Meilenstein: Nexa spricht über HA-Voice und meldet kritische Systemzustände proaktiv.
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-Technik: Home Assistant API, Wyoming Protocol, ntfy/Memos-Push.
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-4. Erfolgsmetriken
-Woran merken wir, dass Nexa funktioniert?
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-Reduktion der Mail-Interaktion: Weniger Zeit in der Mail-App, mehr Fokus auf den Nexa-Digest.
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-Kalender-Füllrate: Fokus-Slots für Arbeit sind automatisch geblockt.
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-Such-Geschwindigkeit: Informationen aus alten Memos/Obsidian werden via #ask sofort gefunden.