fix: argc build reserve mcp functions (#183)

Argcfile.sh

@@ -71,6 +71,9 @@ build() {
     else
         echo 'Skipped building agents since agents.txt is missing'
     fi
+    if [[ -f mcp.json ]]; then
+        argc mcp merge-functions -S
+    fi
 }
 
 # @cmd Build tools

scripts/mcp.sh

@@ -131,7 +131,12 @@ recovery-functions() {
 
 # @cmd Generate function declarations for the mcp tools
 generate-declarations() {
+    pid="$(get-server-pid)"
+    if [[ -n "$pid" ]]; then
         curl -sS http://localhost:$MCP_BRIDGE_PORT/tools
+    else
+        echo "[]"
+    fi
 }
 
 # @cmd Wait for the mcp bridge server to ready