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/bookmarks.yaml

@@ -0,0 +1,22 @@
+# https://gethomepage.dev/configs/bookmarks/
+
+- Reference:
+    - Strix Halo wiki:
+        - abbr: SH
+          href: https://strixhalo.wiki
+
+    - kyuz0 backend benchmarks:
+        - abbr: KB
+          href: https://kyuz0.github.io/amd-strix-halo-toolboxes/
+
+    - llama.cpp:
+        - abbr: LC
+          href: https://github.com/ggml-org/llama.cpp
+
+    - OpenCode:
+        - abbr: OC
+          href: https://opencode.ai
+
+    - Phoenix:
+        - abbr: PX
+          href: https://arize.com/docs/phoenix