Add bash version of go script for macOS/Linux

Same as go_example_1.ps1 but for bash — starts CAN service, Paste UI,
and sync agent. Uses trap for clean shutdown on Ctrl+C.

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

go_example_1.sh

@@ -0,0 +1,85 @@
+#!/usr/bin/env bash
+# go_example_1.sh — Start CanService + Paste + Sync agent
+#
+# Run on multiple machines (after git clone) and they will auto-sync
+# all ingested assets via iroh's relay network. No port forwarding needed.
+
+set -e
+ROOT="$(cd "$(dirname "$0")" && pwd)"
+
+cleanup() {
+    echo ""
+    echo "Shutting down..."
+    [ -n "$CAN_PID" ]  && kill "$CAN_PID"  2>/dev/null
+    [ -n "$SYNC_PID" ] && kill "$SYNC_PID" 2>/dev/null
+    [ -n "$PASTE_PID" ] && kill "$PASTE_PID" 2>/dev/null
+    wait 2>/dev/null
+    exit 0
+}
+trap cleanup INT TERM EXIT
+
+# Kill anything on our ports
+echo "Cleaning up stale processes..."
+lsof -ti:3210 2>/dev/null | xargs kill -9 2>/dev/null || true
+lsof -ti:3211 2>/dev/null | xargs kill -9 2>/dev/null || true
+sleep 0.5
+
+# --- Build everything ---
+
+echo "Building CanService..."
+cargo build --manifest-path "$ROOT/Cargo.toml"
+
+echo "Building Paste example..."
+cargo build --manifest-path "$ROOT/examples/paste/Cargo.toml"
+
+echo "Building CAN Sync agent..."
+cargo build --manifest-path "$ROOT/examples/can-sync/Cargo.toml" --bin can-sync
+
+# --- Start CanService ---
+
+echo "Starting CanService on port 3210..."
+cargo run --manifest-path "$ROOT/Cargo.toml" &
+CAN_PID=$!
+
+# Wait for CanService to be ready
+echo "Waiting for CanService..."
+for i in $(seq 1 30); do
+    if curl -sf http://127.0.0.1:3210/api/v1/can/0/list >/dev/null 2>&1; then
+        break
+    fi
+    if [ "$i" -eq 30 ]; then
+        echo "CanService failed to start within 15s"
+        exit 1
+    fi
+    sleep 0.5
+done
+echo "CanService ready."
+
+# --- Start Sync agent ---
+
+SYNC_CONFIG="$ROOT/examples/can-sync/config.yaml"
+echo "Starting CAN Sync agent (P2P replication)..."
+cargo run --manifest-path "$ROOT/examples/can-sync/Cargo.toml" --bin can-sync -- "$SYNC_CONFIG" &
+SYNC_PID=$!
+sleep 2
+
+# --- Start Paste example ---
+
+echo "Starting Paste on port 3211..."
+cargo run --manifest-path "$ROOT/examples/paste/Cargo.toml" &
+PASTE_PID=$!
+
+echo ""
+echo "Running:"
+echo "  CanService  -> http://127.0.0.1:3210"
+echo "  Paste UI    -> http://127.0.0.1:3211"
+echo "  CAN Sync    -> P2P replication active (iroh relay)"
+echo ""
+echo "Sync passphrase: 'duke-canman-sync'"
+echo "Any other machine running this script with the same passphrase"
+echo "will automatically discover this instance and sync all assets."
+echo ""
+echo "Press Ctrl+C to stop all services."
+
+# Wait for any process to exit
+wait -n "$CAN_PID" "$PASTE_PID" "$SYNC_PID" 2>/dev/null || true