Pin reachy-mini to 1.2.x (1.3.1 has Zenoh pub_status regression)

1.3.1 ZenohServer missing pub_status attribute causes daemon crash,
app TimeoutError on get_status(), and all API routes 404.

Also remove redundant daemon wake-up call from startup script —
--sim mode auto-wakes (wake_up_on_start=True), and the double
initialization was triggering the Zenoh crash.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile.demo

@@ -37,7 +37,7 @@ ENV PATH="/home/user/.local/bin:${PATH}"
 WORKDIR /home/user/app
 
 # Install MuJoCo + reachy-mini SDK (provides reachy-mini-daemon command)
-RUN pip install --no-cache-dir --user mujoco "reachy-mini"
+RUN pip install --no-cache-dir --user mujoco "reachy-mini>=1.2.8,<1.3"
 
 # Copy the hello_world app and install as editable package
 # (editable so the daemon discovers it via entry points)

demo-start.sh

@@ -23,10 +23,21 @@ for i in $(seq 1 60); do
     sleep 1
 done
 
-# ── Wake up the daemon (not_initialized → ready) ─────────────────
-echo "[demo] Waking up daemon..."
-curl -sf -X POST "${DAEMON_URL}/api/daemon/start?wake_up=true" || true
-sleep 3
+# ── Wait for daemon to finish waking up ─────────────────────────
+# The daemon auto-wakes in sim mode (wake_up_on_start=True).
+# Wait for state to leave "not_initialized" before starting the app.
+echo "[demo] Waiting for daemon to be ready..."
+for i in $(seq 1 30); do
+    STATE=$(curl -sf "${DAEMON_URL}/api/daemon/status" 2>/dev/null | python3 -c "import sys,json; print(json.load(sys.stdin).get('state',''))" 2>/dev/null || echo "")
+    if [ "$STATE" != "not_initialized" ] && [ -n "$STATE" ]; then
+        echo "[demo] Daemon state: ${STATE} (took ${i}s)"
+        break
+    fi
+    if [ "$i" -eq 30 ]; then
+        echo "[demo] WARNING: Daemon still not initialized after 30s, proceeding anyway"
+    fi
+    sleep 1
+done
 
 # ── Start the hello_world app ────────────────────────────────────
 echo "[demo] Starting Hello World app..."