Add Homepage dashboard + dual-export OpenCode traces

Homepage as the front door: single page at framework:7575 with one tile
per service, live widgets where the upstream supports it (Ollama loaded
models, container state via docker.sock, etc.), bookmarks for reference
docs. Config files are pyinfra-managed — source of truth lives in
compose/homepage/, sync by editing there and re-running ./run.sh.

OpenCode plugin now dual-exports spans to Phoenix and OpenLIT in
parallel. Phoenix remains the per-trace waterfall view; OpenLIT picks
up the same data for fleet-level metrics. Each destination has its own
batch processor so a hiccup at one doesn't block the other.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

pyinfra/framework/compose/homepage/services.yaml

@@ -0,0 +1,80 @@
+# Service tiles for the localgenai stack. Edit in place — pyinfra
+# ships this once and never overwrites.
+#
+# Widget reference: https://gethomepage.dev/widgets/
+
+- Inference:
+    - Ollama:
+        icon: ollama.svg
+        href: http://framework:11434
+        description: Local model server (Qwen3-Coder-30B and friends)
+        server: localhost-docker
+        container: ollama
+        widget:
+          type: ollama
+          url: http://framework:11434
+
+    - llama.cpp:
+        icon: si-llama
+        href: http://framework:8080
+        description: Vulkan-backed llama.cpp server (gfx1151)
+        server: localhost-docker
+        container: llama
+        # No native widget; a ping check confirms liveness.
+        widget:
+          type: customapi
+          url: http://framework:8080/health
+          refreshInterval: 30000
+          mappings:
+            - field: status
+              label: Status
+
+    - vLLM:
+        icon: mdi-server-network
+        href: http://framework:8000
+        description: Batched OpenAI-compatible serving (ROCm)
+        server: localhost-docker
+        container: vllm
+
+- Agent UIs:
+    - OpenWebUI:
+        icon: open-webui.svg
+        href: http://framework:3000
+        description: Chat UI in front of Ollama, with SearXNG search
+        server: localhost-docker
+        container: openwebui
+
+    - OpenHands:
+        icon: mdi-robot
+        href: http://framework:3030
+        description: Autonomous coding agent (loopback — needs SSH tunnel)
+        server: localhost-docker
+        container: openhands
+
+- Observability:
+    - Beszel:
+        icon: beszel.svg
+        href: http://framework:8090
+        description: Host + container + AMD GPU dashboard
+        server: localhost-docker
+        container: beszel
+
+    - OpenLIT:
+        icon: mdi-chart-line-variant
+        href: http://framework:3001
+        description: LLM fleet metrics (cost, tokens, latency)
+        server: localhost-docker
+        container: openlit
+
+    - Phoenix:
+        icon: arize-phoenix.svg
+        href: http://framework:6006
+        description: Per-trace agent waterfall / flamegraph
+        server: localhost-docker
+        container: phoenix
+
+- External:
+    - SearXNG:
+        icon: searxng.svg
+        href: https://searxng.n0n.io
+        description: Self-hosted metasearch (used by OpenWebUI + OpenCode)