sightsound: new FLM NPU sight+sound service on XDNA2 (gemma4-it:e4b)

New Dankclaw service frank-default-sightsound: FLM 1.0.1 serving the
Gemma4-E4B-IT-NPU2 pack (vision+audio+reasoning, 131072 ctx) on the XDNA2
NPU at port 52626. Model choice rationale: gemma4-it is the only NPU2 model
family with BOTH image and audio towers; the uncensored candidate qwythos:9b
is text-only, so sight+sound wins over uncensored here.

Deployer wiring: planner maps env/unit/serve files to the new service name;
deploy-remote gains deploy_llm_sightsound (relink + daemon-reload + enable +
restart + health gate on /v1/version — FLM has no /health route). Unlike the
retired frank-default-npu relink-only path, this unit is boot-enabled.

scripts/serve-frank-default-sightsound.sh

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+# Serve the FastFlowLM (FLM) sight+sound endpoint — frank-default-sightsound.
+#
+# Runs `flm serve <tag>` on the XDNA2 NPU (50 TOPS, Dankclaw). The NPU is a
+# single-lane device: generations serialize in FIFO order, so this is a
+# background/triage endpoint, not an interactive multi-user chat. The NPU
+# draws from the unified RAM pool shared with frank-default-large (the iGPU
+# llama.cpp service); see serverAppConfigs-docs/LLM/frank-default-sightsound.md
+# for the memory budget and the model-selection tradeoff.
+#
+# NOTE: FLM requires unlimited memlock. The unit sets LimitMEMLOCK=infinity.
+# NOTE: an unknown model tag does NOT 404 — FLM logs an error and silently
+# serves llama3.2:1b instead. Client model IDs must be the exact FLM registry
+# tag (e.g. gemma4-it:e4b), never a service alias. Custom tags only resolve
+# when FLM_CONFIG_PATH points at the user registry that carries them and their
+# kernels are symlinked into /home/dank/.config/flm/xclbins/<PackName>.
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ENV_FILE="${FLM_SIGHTSOUND_ENV_FILE:-$SCRIPT_DIR/frank-default-sightsound.env}"
+if [[ -f "$ENV_FILE" ]]; then
+    set -a
+    # shellcheck disable=SC1090
+    source "$ENV_FILE"
+    set +a
+fi
+
+# --- defaults (used when the env file does not set them) -------------------
+: "${FLM_BIN:=/usr/bin/flm}"
+: "${FLM_MODEL:=gemma4-it:e4b}"
+: "${FLM_HOST:=0.0.0.0}"
+: "${FLM_PORT:=52626}"
+: "${FLM_PMODE:=turbo}"
+: "${FLM_ASR:=0}"
+: "${FLM_CTX_LEN:=131072}"
+
+# The user registry is a superset of the system registry (it carries the
+# custom tags too), and its model_path resolves relative to the registry file,
+# so exports keep a tag swap in the env file from needing script edits.
+export FLM_CONFIG_PATH="${FLM_CONFIG_PATH:-/home/dank/.config/flm/model_list.json}"
+export FLM_XCLBIN_PATH="${FLM_XCLBIN_PATH:-/home/dank/.config/flm/xclbins}"
+
+if [[ ! -x "$FLM_BIN" ]]; then
+    echo "missing flm binary: $FLM_BIN" >&2
+    exit 1
+fi
+
+# --- optional flags ----------------------------------------------------------
+OPT_ARGS=()
+if [[ "${FLM_ASR}" != "0" ]]; then
+    OPT_ARGS+=(--asr "${FLM_ASR}")
+fi
+if [[ "${FLM_CTX_LEN}" != "-1" ]]; then
+    OPT_ARGS+=(--ctx-len "${FLM_CTX_LEN}")
+fi
+
+exec "$FLM_BIN" serve "$FLM_MODEL" \
+    --host "$FLM_HOST" \
+    -p "$FLM_PORT" \
+    --pmode "$FLM_PMODE" \
+    "${OPT_ARGS[@]}"