feat(stack): replace Organizr with Tatlock UI, remove Netdata

Remove Organizr dashboard and Netdata monitoring:
- Delete stacks/organizr.yml and stacks/netdata.yml
- Delete organizr-widgets/ directory and npm forward-auth config
- Remove organizr database references from postgres-shared docs

Promote Tatlock UI as primary dashboard:
- Move from port 8092 to 9999 (Organizr's port)
- Enable external access at home.schweitz.net
- Update all documentation references

Update service counts: 26 containers across 20 stacks

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -2,7 +2,7 @@
 
 > Self-hosted home server infrastructure with GPU-accelerated ML, media streaming, and secure remote access
 
-**Main Dashboard:** https://home.schweitz.net (Organizr)
+**Main Dashboard:** https://home.schweitz.net (Tatlock UI)
 
 ## Quick Links
 
@@ -34,9 +34,8 @@
 │  ├── docker-dataplane - Service mesh   │
 │  └── Headscale (8085) - VPN mesh       │
 ├─────────────────────────────────────────┤
-│  Monitoring Layer                       │
-│  ├── Netdata (19999) - Metrics         │
-│  └── Organizr (8084) - Dashboard       │
+│  Dashboard Layer                        │
+│  └── Tatlock UI (9999) - Dashboard     │
 ├─────────────────────────────────────────┤
 │  Optimization Layer                     │
 │  ├── Watchtower - Auto-updates         │
@@ -69,7 +68,6 @@ portainer-core/
 ├── services/              # Service source code
 │   ├── core-api/         # Infrastructure management API
 │   └── ...
-├── organizr-widgets/      # Dashboard widgets
 ├── AGENTS.md             # AI agent guidelines (single source of truth)
 ├── README.md             # This file (documentation index)
 ├── PLANS.md              # Implementation plan tracker
@@ -130,7 +128,7 @@ See [External Services](docs/EXTERNAL_SERVICES.md) for services maintained in se
 | **Open WebUI** | 8081 | LLM chat interface |
 | **Nextcloud** | 8082 | Cloud storage |
 | **Core API** | 8083 | Infrastructure management API |
-| **Organizr** | 8084 | Unified dashboard |
+| **Tatlock UI** | 9999 | Home lab dashboard |
 | **Headscale** | 8085 | VPN control server |
 | **Jellyfin** | 8096 | Media streaming |
 | **Gitea** | 3002 | Git repository hosting |
@@ -139,8 +137,6 @@ See [External Services](docs/EXTERNAL_SERVICES.md) for services maintained in se
 | **Redis Shared** | 6379 | Shared cache (internal) |
 | **Qdrant** | 6333, 6334 | Vector database |
 | **Ollama** | 11434 | ML model API |
-| **Netdata** | 19999 | System monitoring |
-
 See [Stacks Reference](docs/reference/stacks.md#port-allocation) for complete port allocation.
 
 ## GPU Services