feat(makefile): add development commands for Vite and Python backend, including help instructions and new script for local development

Makefile

@@ -1,15 +1,38 @@
-.PHONY: install run build lint test test-be-perf clean
+.PHONY: install run dev dev-fe build lint test test-be-perf clean help dist-linux dist-linux-x64
 
 install:
 	pnpm install
 	poetry install
 
+# Python backend only. For HMR, use: make dev  OR  make run in one terminal and pnpm run dev in another.
 run:
 	poetry run python -m meshchatx.meshchat
 
+# Vite dev server (live reload) + backend. Open http://localhost:5173 — proxies /api and /ws to MESHCHAT_PORT (default 8000).
+dev:
+	bash scripts/dev-local.sh
+
+# Vite only; expects backend already running (e.g. make run on port 8000).
+dev-fe:
+	pnpm run dev -- --host 127.0.0.1 --port 5173
+
 build:
 	pnpm run build
 
+# Linux AppImage + deb (see package.json dist:linux).
+dist-linux:
+	pnpm run dist:linux
+
+dist-linux-x64:
+	pnpm run dist:linux-x64
+
+help:
+	@echo "make dev        - Vite HMR + backend (http://localhost:5173)"
+	@echo "make run        - backend only"
+	@echo "make dev-fe     - Vite only (pair with make run)"
+	@echo "make dist-linux - AppImage + deb (electron-builder)"
+	@echo "Env: MESHCHAT_PORT, E2E_BACKEND_PORT (vite proxy; script sets both), VITE_DEV_HOST, VITE_DEV_PORT"
+
 lint:
 	pnpm run lint
 	poetry run ruff check .

scripts/dev-local.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Vite dev server (HMR) + MeshChat Python backend. Open http://localhost:5173 (or VITE_DEV_PORT).
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT"
+
+export MESHCHAT_PORT="${MESHCHAT_PORT:-8000}"
+export E2E_BACKEND_PORT="$MESHCHAT_PORT"
+
+BE_PID=""
+cleanup() {
+    if [[ -n "$BE_PID" ]] && kill -0 "$BE_PID" 2>/dev/null; then
+        kill "$BE_PID" 2>/dev/null || true
+        wait "$BE_PID" 2>/dev/null || true
+    fi
+}
+trap cleanup EXIT INT TERM
+
+poetry run python -m meshchatx.meshchat &
+BE_PID=$!
+
+sleep "${DEV_BACKEND_WAIT:-1}"
+
+VITE_HOST="${VITE_DEV_HOST:-127.0.0.1}"
+VITE_PORT="${VITE_DEV_PORT:-5173}"
+
+pnpm run dev -- --host "$VITE_HOST" --port "$VITE_PORT"