chore: add mise.toml for tool versions and tasks, thin Makefile shim

Makefile

@@ -1,34 +0,0 @@
-.PHONY: build build-web build-go dev test clean
-
-# Build the production single binary (embeds the Svelte SPA)
-build: build-web build-go
-
-build-web:
-	@echo "==> Building Svelte frontend..."
-	cd web && npm run build
-
-build-go:
-	@echo "==> Building Go binary (production, embeds web/build)..."
-	go build -tags production -o wotra ./cmd/wotra
-
-# Development mode: run Go server + Vite dev server concurrently
-dev:
-	@echo "==> Starting development servers..."
-	@echo "    Go API:  http://localhost:8080"
-	@echo "    Vite UI: http://localhost:5173"
-	@trap 'kill 0' INT; \
-	  AUTH_TOKEN=$${AUTH_TOKEN:-devtoken} go run ./cmd/wotra & \
-	  cd web && npm run dev
-
-# Run all Go tests
-test:
-	go test ./...
-
-# Install frontend dependencies
-web/node_modules:
-	cd web && npm install
-
-# Remove build artifacts
-clean:
-	rm -f wotra
-	rm -rf web/build web/.svelte-kit

README.md

@@ -15,30 +15,47 @@ A self-hosted working time tracker with a Go backend and a Svelte PWA frontend.
 
 ## Quick Start
 
+Tool versions are declared in `mise.toml`. Install [mise](https://mise.jdx.dev) and run `mise install` once to get the correct Go and Node versions.
+
 ### Development
 
 ```bash
-# 1. Set your auth token
-export AUTH_TOKEN=mysecrettoken
+# Install frontend dependencies (first time only)
+mise run install
 
-# 2. Start both servers
-make dev
+# Start both servers (Go API + Vite dev server)
+mise run dev
 # Go API:  http://localhost:8080
 # Vite UI: http://localhost:5173 (with /api proxy)
 ```
 
+`AUTH_TOKEN` defaults to `devtoken` in `mise.toml`. Override it by setting the variable in your environment before running.
+
 Open `http://localhost:5173`, go to **Settings**, enter your token.
 
 ### Production (single binary)
 
 ```bash
-make build           # builds web/ then embeds it in the Go binary
+mise run build        # builds web/ then embeds it in the Go binary
 
-# Run
 AUTH_TOKEN=mysecrettoken ./wotra
 # open http://localhost:8080
 ```
 
+### All tasks
+
+| Task          | Description                                      |
+|---------------|--------------------------------------------------|
+| `mise run build`     | Build production binary (web + Go)        |
+| `mise run build:web` | Build Svelte frontend only                |
+| `mise run build:go`  | Build Go binary only                      |
+| `mise run dev`       | Start API + UI dev servers concurrently   |
+| `mise run dev:api`   | Start Go API server only                  |
+| `mise run dev:ui`    | Start Vite dev server only                |
+| `mise run test`      | Run all Go tests                          |
+| `mise run install`   | Install frontend npm dependencies         |
+| `mise run clean`     | Remove build artifacts                    |
+
 ## Configuration (environment variables)
 
 | Variable     | Default     | Description                                  |

mise.toml

@@ -0,0 +1,57 @@
+[tools]
+go = "1.26.2"
+node = "24.14.0"
+npm = "latest"
+
+[env]
+AUTH_TOKEN = "devtoken"
+PORT = "8080"
+DB_PATH = "wotra.db"
+TZ = "UTC"
+
+[tasks.build]
+description = "Build production single binary (web + Go)"
+depends = ["build:web", "build:go"]
+
+[tasks."build:web"]
+description = "Build Svelte frontend"
+dir = "web"
+run = "npm run build"
+
+[tasks."build:go"]
+description = "Build Go binary with embedded web assets"
+run = "go build -tags production -o wotra ./cmd/wotra"
+
+[tasks.dev]
+description = "Start Go API and Vite dev server concurrently"
+run = """
+echo "Go API:  http://localhost:${PORT}"
+echo "Vite UI: http://localhost:5173"
+mise run dev:api & mise run dev:ui
+wait
+"""
+
+[tasks."dev:api"]
+description = "Start Go API server"
+run = "go run ./cmd/wotra"
+
+[tasks."dev:ui"]
+description = "Start Vite dev server"
+dir = "web"
+run = "npm run dev"
+
+[tasks.test]
+description = "Run all Go tests"
+run = "go test ./..."
+
+[tasks.install]
+description = "Install frontend npm dependencies"
+dir = "web"
+run = "npm install"
+
+[tasks.clean]
+description = "Remove build artifacts"
+run = """
+rm -f wotra
+rm -rf web/build web/.svelte-kit
+"""