feat(llm): rename inference services dropping 'default' from names

frank-default-large -> frank-large (Dankclaw :7770), frank-default-small ->
frank-small (Dankserver :7770), frank-default-sightsound -> frank-npu
(Dankclaw :7771). Units, env files, serve scripts, deploy-plan mappings,
deploy-remote dispatch (stop/disable old units + relink + enable new), and the
test seams move together. Retired frank-default-npu.* artifacts moved to
scripts/.AGENTTRASH/ (tracked-in-history; ignored on disk).

Served aliases become frank-large / frank-small via --alias; the NPU endpoint
serves the whole FLM registry, so its rename changes no served tags.

scripts/bench-ubatch.sh

@@ -1,14 +1,14 @@
 #!/usr/bin/env bash
-# Benchmark ubatch with llama-bench for frank-default-large.
+# Benchmark ubatch with llama-bench for frank-large.
 #
 # This is intentionally a ubatch-only benchmark. It uses one llama-bench
 # process, an 8K prompt workload, and equal batch/ubatch values. No server
 # process, HTTP requests, or log scraping are used.
 #
-# Run on Dankclaw after stopping frank-default-large:
-#   sudo systemctl stop frank-default-large
+# Run on Dankclaw after stopping frank-large:
+#   sudo systemctl stop frank-large
 #   ./scripts/bench-ubatch.sh
-#   sudo systemctl start frank-default-large
+#   sudo systemctl start frank-large
 set -euo pipefail
 
 : "${LLAMA_BENCH:=/home/dank/GitPackages/ROCmFPX/build-strix-rocmfp4/bin/llama-bench}"