fix(deploy): hash every file a locally built image COPYs, not just its Containerfile

build_compose_image skips `podman build` when the installed image's `cfhash`
label matches a hash taken from the checkout now — the skip is what keeps
frank-tts-engine's ten-minute recursive source clone off every re-deploy. The
hash covered the Containerfile ALONE, so any change to a file the image COPYs
was invisible: edit dankclaw/voiceservice/app.py or tts-engine-warm.sh, re-run
the deploy, and podman reports the existing image is fine. The redeployed
container runs the previous code, /health answers 200, and the e2e gate has no
way to see it. It bit the boot warmer twice this week.

Each case arm now names its own extra=(…) — the paths its Containerfile COPYs —
and the label hashes the Containerfile plus those. The two arms are kept apart
deliberately: the façade bakes app.py and tts-start.sh, the engine bakes
tts-engine-start.sh and tts-engine-warm.sh, and comfyui/loki/alloy have no extra
files, so their hash is unchanged and they do not rebuild on this commit.
Hashing rather than word-splitting because these are repo-relative paths under
a fixed checkout root.

The seam drives the real function against a stub podman and asserts observable
output — did the deploy ask podman to build, or did it skip? — in five steps:
first deploy builds, unchanged tree does not, editing the engine's COPY'd warm
hook rebuilds the ENGINE image and not the façade, editing app.py rebuilds the
façade. Reverted scripts/deploy-remote.sh to prove it red on the old hash: the
warm-hook step is exactly where it fails.

scripts/deploy-remote.sh

@@ -541,6 +541,14 @@ deploy_observability() {
 
 build_compose_image() {
     local service="$1" image cfhash oldhash containerfile
+    # Every file the image COPIES IN, beside the Containerfile. The skip below
+    # compares a hash against the image's `cfhash` label, so anything the build
+    # bakes must be in that hash or the deploy silently keeps serving the old
+    # bytes: an edited app.py or warm hook leaves the Containerfile untouched,
+    # the label matches, `podman build` never runs, and the health gate passes on
+    # a stale container. Services whose Containerfile pulls everything at
+    # build time (comfyui, loki, alloy) keep an empty list.
+    local -a extra=()
     case "$service" in
         comfyui)
             image=comfyui-rocm:gfx1151
@@ -557,6 +565,7 @@ build_compose_image() {
             # fails on a tag that was never made.
             image=franksdank/frank-tts:latest
             containerfile=dankclaw/voiceservice/Containerfile
+            extra=(dankclaw/voiceservice/app.py)
             ;;
         frank-tts-engine)
             # The arm A TTS engine (qwentts.cpp `tts-server`). Built from
@@ -565,12 +574,16 @@ build_compose_image() {
             # offline: the clone only happens when this Containerfile changes.
             image=franksdank/frank-tts-engine:latest
             containerfile=dankclaw/voiceservice/Containerfile.engine
+            # start.sh is the image's CMD and the warmer is the unit's
+            # ExecStartPost; both are COPY'd in, so both decide what this image is.
+            extra=(dankclaw/voiceservice/tts-engine-start.sh
+                   dankclaw/voiceservice/tts-engine-warm.sh)
             ;;
         *)
             return 0
             ;;
     esac
-    cfhash="$(sha256sum "$containerfile" | cut -d' ' -f1)"
+    cfhash="$(sha256sum "$containerfile" "${extra[@]}" | cut -d' ' -f1 | tr -d '\n')"
     oldhash="$(podman image inspect "$image" --format '{{index .Config.Labels "cfhash"}}' 2>/dev/null || echo none)"
     if [[ "$oldhash" != "$cfhash" ]]; then
         # --format docker is required, not cosmetic: podman defaults to the OCI