# 00 — Master Index
> Last updated: 2026-08-11
> Quick-reference card for Claude. Read this first, then load specific files only as needed.

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## 🏠 Infrastructure Constants

| Key | Value |
|---|---|
| **Proxmox host** | `192.168.1.48:8006` |
| **Gateway** | `192.168.1.1` |
| **NAS** | `192.168.1.12` (Synology, spendlikstation.local) |
| **Domain** | `spendlik.sk` |
| **WebSupport service ID** | `15056760` |
| **Gitea owner** | `spendlik` |
| **MCP server** | `mcp.spendlik.sk` (CT 112, port 3500) |
| **Proxmox kernel** | `6.14.11-5-pve` PINNED + `apt-mark hold` on all other installed kernel packages (as of 2026-08-11) — see gotchas |

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## 🖥️ Container & VM Inventory

| ID | Hostname | IP | Domain | Purpose |
|---|---|---|---|---|
| 100 | n8n | 192.168.1.29 | automation.spendlik.sk | Workflow automation (Authelia protected) |
| 101 | reverse-proxy | 192.168.1.10 | — | nginx reverse proxy for all services |
| 102 | authelia | 192.168.1.50 | auth.spendlik.sk | SSO / 2FA gateway |
| 103 | matrix-synapse | 192.168.1.60 | matrix.spendlik.sk | Self-hosted messaging |
| 104 | snappymail | 192.168.1.55 | email.spendlik.sk | Webmail (Authelia protected) |
| 105 | audiobookshelf | 192.168.1.70 | books.spendlik.sk | Ebooks / audiobooks (NAS bind mount) |
| 106 | jellyfin | 192.168.1.75 | jellyfin.spendlik.sk | Media server (NAS NFS mount) |
| 107 | wireguard | 192.168.1.80 | — | VPN (UDP 51820) |
| 108 | ddns | 192.168.1.95 | — | DDNS updater (WebSupport API v2) |
| 109 | gitea | 192.168.1.90 | git.spendlik.sk | Self-hosted Git (v1.22.6, code indexer enabled) |
| 110 | windows11 (VM) | 192.168.1.227 | — | RTX 4060 passthrough, Rhino 7 + Sunshine/Moonlight |
| 111 | paperless | 192.168.1.111 | paperless.spendlik.sk | Document management (6-lang OCR, media+data on NAS) |
| 112 | mcp-server | 192.168.1.100 | mcp.spendlik.sk | MCP bridge — Proxmox + Gitea tools for Claude |
| 114 | koillection | 192.168.1.114 | collections.spendlik.sk | Collection manager — CT created 2026-08-11, **app deployment in progress** (Docker/Koillection/nginx/SSL/DNS still pending, see `114_koillection_deployment.md`) |
| 115 | vaultwarden | 192.168.1.115 | vault.spendlik.sk | Password manager (Vaultwarden, Docker, Bitwarden-compatible) |

> ⚠️ CT 117 (Radicale) has a deployment guide written but is **NOT yet deployed** — do not treat as live infrastructure. It will be added to this table once physically provisioned.
> ⚠️ CT 113 (stirling-pdf) is documented elsewhere in this repo but does **not** appear in live `proxmox_list_containers` output as of 2026-08-11 — flagged for investigation, do not assume it's running without checking live state first.
> Next available CT ID: **116** (Bookmark Manager, undecided tool) · CT 117 reserved for Radicale.

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## 🌐 WebSupport DNS Record IDs

Script location: `/usr/local/bin/ddns-update.sh` in CT 108. Full credentials map: `secrets-index.md`.
> Since 2026-08-10: all subdomains are **CNAME → spendlik.sk**; only the root record holds an IP and is updated by the DDNS script. See `homelab-overview.md` DNS architecture section.

| Subdomain | Record ID |
|---|---|
| spendlik.sk | 12631197 |
| *.spendlik.sk | 12631200 |
| automation.spendlik.sk | 306256338 |
| matrix.spendlik.sk | 307776273 |
| email.spendlik.sk | 308845857 |
| auth.spendlik.sk | 308994393 |
| books.spendlik.sk | 311013228 |
| jellyfin.spendlik.sk | 311384664 |
| git.spendlik.sk | 323271195 |
| mcp.spendlik.sk | 327475181 |
| paperless.spendlik.sk | 328109687 |
| vault.spendlik.sk | 330343277 |
| pdf.spendlik.sk | *(add after DNS record created in WebSupport)* |
| collections.spendlik.sk | *(add after CNAME record created in WebSupport — Koillection app deployment in progress)* |
| cal.spendlik.sk | *(add after DNS record created in WebSupport — Radicale not yet deployed)* |

> ⚠️ When adding a new subdomain: (1) create **CNAME** record → `spendlik.sk` in WebSupport admin (never a per-subdomain A record), (2) add nginx vhost in CT 101, (3) run certbot, (4) inspect nginx config after certbot. No DDNS script edit needed — see above.

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## 💻 Devices

| Device | OS | Key Detail |
|---|---|---|
| Main PC | CachyOS (Arch), KDE Plasma 6 / Wayland | i7-13700K, RTX 4060 Ti, 32GB DDR5 |
| Galaxy S25 | Android | WireGuard VPN client; MGit for Obsidian sync; Bitwarden |
| Galaxy Tab S9 | Android | MGit for Obsidian sync; Bitwarden |
| Bambu A1 + AMS Lite | — | LAN Only Mode, OrcaSlicer |

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## 📁 Documentation Map

| File | Covers |
|---|---|
| `homelab-overview.md` | Hardware specs, full container/VM table, NAS mounts, network diagram, **DNS architecture (CNAME-based, updated 2026-08-10)** |
| `cachy-overview.md` | CachyOS main PC — hardware, software, kernel, services, keyboard customisation |
| `services.json` | Structured inventory of all containers/VMs — IPs, ports, stacks, compose paths |
| `secrets-index.md` | Map of service credentials and WHERE they are stored (no actual secrets) |
| `PROJECT_INSTRUCTIONS.md` | Canonical behavioural/methodology reference — decision defaults, checklists, gotchas, **Pre-Flight Verification protocol (added 2026-08-11)** |
| `113_stirling_pdf_deployment.md` | CT 113 — Stirling PDF Docker deploy, nginx, SSL, n8n API integration |
| `114_koillection_deployment.md` | CT 114 — Koillection Docker deploy, NAS uploads mount, collection setup — **IN PROGRESS: CT created 2026-08-11, app install pending** |
| `115_vaultwarden_deployment.md` | CT 115 — Vaultwarden Docker deploy, nginx, SSL |
| `117_radicale_deployment.md` | CT 117 — Radicale CalDAV/CardDAV deploy, nginx, SSL, Thunderbird/DAVx⁵ clients — **guide only, not yet deployed** |

> 💡 Load only the file(s) relevant to the current task. Do not load all files by default.
> 💡 Use `gitea_search_content` to find relevant files by keyword instead of guessing filenames.
> 💡 Files `01_` through `11_` referenced previously do not exist — they were placeholders never written.
> 💡 For "is CT X running/deployed right now" questions, don't read docs — call `proxmox_list_containers` directly (single cheap live call, always accurate).
> 💡 Before running Phase 1 of any not-yet-executed deploy guide, verify volatile values (LXC template version, DNS record type) against `homelab-overview.md` and `obsidian-vault/05 Resources/Proxmox LXC Templates.md` — guides can go stale. See `PROJECT_INSTRUCTIONS.md` → Pre-Flight Verification.

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## 🔑 Key Gotchas

| Area | Warning |
|---|---|
| **nginx / certbot** | Certbot corrupts configs — always inspect after issuance; check for duplicate `server_name` and missing closing braces |
| **NFS mounts** | Use `soft,timeo=30,retrans=3` — hard NFS can freeze Proxmox host |
| **DDNS script** | `/tmp/ddns_last_ip` cache persists at runtime; cleared on reboot. Since 2026-08-10 only updates the root A record — no per-subdomain edits needed. |
| **WebSupport DNS** | Two separate management pages — missing the second caused an outage. DNS record must exist before certbot can verify. Always update both pages. |
| **WebSupport DNS — subdomains are CNAME-only** | Since 2026-08-10: all `*.spendlik.sk` subdomains are CNAME → `spendlik.sk`. Only the root A record ever holds an IP — WebSupport rejects (422) writing an A record whose IP value already exists on *any other record* in the zone. |
| **WebSupport API — PUT silently resets `name`** | A `PUT` to `/v2/service/{id}/dns/record/{recordId}` that omits the `name` field does NOT preserve the existing name — it silently renames the record to the bare zone apex. Always include `name` explicitly in PUT payloads, or avoid partial-field updates. |
| **WebSupport API — POST `name` is relative** | Creating a record via POST: `name` is relative to the zone, not a full FQDN. Passing `"email.spendlik.sk"` creates `email.spendlik.sk.spendlik.sk`. Use the bare subdomain only (`"email"`, `"*"`, `"git"`). |
| **Gitea writes** | Always read file content before writing — writes replace entire file |
| **Proxmox kernel** | PINNED to `6.14.11-5-pve` (`proxmox-boot-tool kernel pin`). **2026-08-11 incident**: an accidental `apt upgrade -y` run directly on the Proxmox host (meant for a container) pulled in `proxmox-kernel-6.14.11-9-pve` and the entire `proxmox-kernel-7.0.x` branch. No impact occurred — the boot pin held, running kernel never changed, NVIDIA DKMS module remained built against the pinned `6.14.11-5-pve` only. Resolved by re-affirming the pin and running `apt-mark hold proxmox-kernel-6.14 proxmox-kernel-7.0 proxmox-kernel-6.14.11-9-pve proxmox-kernel-7.0.14-11-pve-signed proxmox-kernel-7.0.6-2-pve`, which now blocks apt from proposing these kernel packages at all. **Verify hold status with `apt-mark showhold` before assuming any future `apt upgrade` on the host is kernel-safe.** |
| **LXC template versions** | Verify exact template filename in `obsidian-vault/05 Resources/Proxmox LXC Templates.md` (or live `pveam list local`) before every `pct create` — versions bump periodically and guides can reference stale strings. Once a container is created, template version is irrelevant — `apt upgrade` keeps it current, no need to recreate existing containers on a newer template. |
| **OpenRGB** | Uninstalled — SMBus interaction with ADATA XPG GAMMIX D35 poses hardware risk. Do not reinstall. |
| **Hairpin NAT** | Slovak Telekom router blocks hairpin — test external domains from mobile data, not LAN |
| **WebSupport API auth** | HMAC-SHA1 signed requests; `X-Date` header in `YYYYMMDDTHHmmSSZ` format; service ID is numeric `15056760` |
| **kocka-novinky.sk** | Wordfence blocks login — keep disabled. wp-config.php WP_SITEURL/WP_HOME hardcoded. Zen browser Content-Encoding issue — use Firefox/Chrome. |
| **Paperless consume** | File watcher only detects new files — use `document_consumer --oneshot` for bulk imports |
| **LXC Docker** | Requires `--unprivileged 0 --features nesting=1` for Docker to work inside container |
| **Stirling PDF nginx** | Set `client_max_body_size 100M` — large PDFs will be rejected without it |
| **Stirling PDF + Authelia** | Add `/api/*` bypass rule before catch-all 2FA rule — required for n8n API access |
| **Koillection HTTPS** | Set `HTTPS_ENABLED=1` in `.env` and restart the container after SSL is in place — otherwise redirect loops |
| **Koillection upgrades** | Always back up PostgreSQL DB before upgrading — data migrations can have edge cases |
| **Radicale + Authelia** | CalDAV clients use Basic Auth on every request, not browser SSO — bypass Authelia for `cal.spendlik.sk`, rely on Radicale htpasswd + HTTPS instead |
| **pveproxy crash** | `Can't call method "process" on an undefined value at pveproxy.pm line 304` — seen 2026-07-28, likely NFS-cascade freeze (host + SSH fully unresponsive). Fix: physical power cycle. Confirmed **all CTs (100–115) + VM 110 now set to "Start at boot"** as of 2026-07-28, so recovery should be automatic next time. |
| **NVIDIA driver on host shows as unavailable** | `nvidia-smi` failing on the Proxmox host with "couldn't communicate with the NVIDIA driver" is **expected**, not a fault, whenever VM 110 is running with GPU passthrough active — the GPU is owned by `vfio-pci` for the VM, not the host. Only investigate if VM 110 is stopped and the host still can't see the GPU. |

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## 🔄 Active Projects (as of 2026-08-11)

| Project | Next Action | Reference |
|---|---|---|
| Koillection | CT 114 created 2026-08-11 — continue with Phase 2 (Docker install) onward | CT 114 |
| kocka-novinky.sk automation | Build n8n POC: Brickset → Claude API → WordPress lego-set + post | CT 100 |
| Paperless-ngx | ~730 docs processing; next: Gemini post-processing setup | CT 111 |
| Gemini post-processing | Get Gemini API key → install Python package in CT 111 | CT 111 |
| WireGuard DDNS | Add `vpn.spendlik.sk` DNS record + update CT 108 script | CT 107/108 |
| Bookmark manager | Decide tool → deploy CT 116 | CT 116 (free) |
| Authelia enforcement | Extend 2FA to Jellyfin, Audiobookshelf, Gitea | CT 102/101 |
| Radicale (CalDAV) | Guide written (`117_radicale_deployment.md`) — not yet deployed | CT 117 |
| Investigate pveproxy/NFS crash | Check dmesg/NFS logs around 2026-07-28 16:45–17:40 UTC to confirm root cause | Proxmox host |
| Investigate CT 113 discrepancy | Documented as deployed but absent from live `proxmox_list_containers` — confirm actual state | CT 113 |

> Full task list: `obsidian-vault/Tasks.md`

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## ✅ Recently Resolved

| Item | Resolution |
|---|---|
| Accidental `apt upgrade -y` on Proxmox host (2026-08-11) | Ran against host instead of a container; pulled in `6.14.11-9-pve` + `7.0.x` kernel packages. Boot pin held throughout, no actual impact on running kernel or NVIDIA passthrough. Sealed with `proxmox-boot-tool kernel pin 6.14.11-5-pve` (reaffirmed) + `apt-mark hold` on all 5 non-pinned kernel packages. Verified via `apt-mark showhold`. |

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## 🧠 Life OS — Obsidian Vault Structure

| Folder | Purpose |
|---|---|
| `00 Inbox` | Capture everything first |
| `01 Goals` | Long-term goals |
| `02 Projects` | Active projects (each has its own `.md`) |
| `03 Areas` | Ongoing responsibilities (Homelab, Main PC, Personal Admin) |
| `04 Daily Notes` | Daily log |
| `05 Resources` | Reference material |
| `06 Archive` | Completed projects |
| `Tasks.md` | Master task dashboard (hand-curated) |

**Sync**: Obsidian Git plugin on PC → Gitea `spendlik/obsidian-vault`; MGit on Android

### 📋 Vault Quick Reference — Known File Paths

| File | Purpose |
|---|---|
| `Tasks.md` | Live task dashboard |
| `05 Resources/Possible Purchases.md` | Purchase wishlist |
| `05 Resources/3D Print Queue.md` | 3D print job queue |
| `05 Resources/Proxmox LXC Templates.md` | LXC template reference — **verify before every `pct create`** |
| `03 Areas/Personal Admin.md` | Personal admin tasks |
| `03 Areas/Homelab.md` | Homelab recurring tasks |
| `03 Areas/Main PC.md` | CachyOS main PC tasks |

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## 🛠️ Automation & Tools Stack

| Layer | Tool | Location |
|---|---|---|
| Scheduling / plumbing | n8n | CT 100 / automation.spendlik.sk |
| AI content generation | Claude API (claude-sonnet-4-20250514) | via n8n HTTP node |
| Agentic coding assistant | Claude Code 2.1.173 | CachyOS / VSCodium extension |
| MCP tools | Proxmox + Gitea + search | CT 112 / mcp.spendlik.sk |
| Notifications | Matrix | CT 103 / matrix.spendlik.sk |
| DNS management | WebSupport REST API v2 | CT 108 |
| Password manager | Vaultwarden | CT 115 / vault.spendlik.sk |
| Affiliate site | WordPress on WebSupport | kocka-novinky.sk |

### MCP Tools Available

| Tool | Description |
|---|---|
| `proxmox_list_containers` | List all LXC/VMs with status |
| `proxmox_get_resources` | Node CPU/RAM/disk usage |
| `proxmox_get_container_status` | Status of specific CT by vmid |
| `proxmox_start_container` | Start a stopped CT |
| `proxmox_stop_container` | Stop a running CT |
| `gitea_list_repos` | List repos for a user |
| `gitea_read_file` | Read file from any repo |
| `gitea_write_file` | Write/update file in any repo |
| `gitea_list_files` | List files in a repo directory |
| `gitea_search_content` | Full-text search across all .md files in a repo |

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## 🗃️ Gitea Repositories

| Repo | Visibility | Purpose |
|---|---|---|
| `Claude_Homelab` | Public | Infrastructure docs, deploy guides, this index |
| `obsidian-vault` | Private | Life OS / second brain / task dashboard |