nexa/CLAUDE.md

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). 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). Reachable two ways:
  • NFS (Proxmox host-mounted at /mnt/pve/unas, 19.4 TiB / 16.3 TiB free) — fine for host-side admin tasks and read-mostly mounts.
  • SMB — default for Nexa per-container volumes (Ubiquiti also recommends SMB as the modern path; the URL is smb://192.168.1.31/<share> macOS / \\192.168.1.31\<share> Windows). The user already hit NFS+unprivileged-LXC write-permission issues with Nextcloud; don't repeat that. Mount SMB shares directly as docker volumes inside the stack with explicit username=/uid=/gid= — sidesteps uid-mapping entirely.
  • Storage-layer snapshots are NOT configured on the 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, but not "the whole pool, last Tuesday". See docs/12 #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.
• LXC 105 nextcloud — Nextcloud at nc.nuclide.systems.
• LXC 106 octoprint — currently Exited; flagged in docs/11.
• 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). 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/09-deployment.md — most-touched file during bring-up
• docs/11-open-questions.md — read before assuming defaults