Build infrastructure for releases

- Makefile: cross-compile to linux/{amd64,arm64}, darwin/{amd64,arm64},
  windows/amd64 into dist/ with SHA256SUMS. Version is stamped via
  -ldflags '-X main.version=...'.
- .gitea/workflows/release.yml: on tag push (v*) the workflow runs
  `make dist`, creates a Gitea release for the tag and uploads every
  artefact from dist/ via the Gitea API.
- main.go: `rb-search version` / --version prints the stamped version.
- README: new "Готовые бинари" section with curl/Invoke-WebRequest
  install snippets and a checksum-verify hint.

.gitea/workflows/release.yml

@@ -0,0 +1,51 @@
+name: release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+
+      - name: Build cross-platform binaries
+        run: make dist VERSION=${{ github.ref_name }}
+
+      - name: Create release and upload assets
+        env:
+          TOKEN: ${{ secrets.GITEA_TOKEN }}
+          API:   ${{ github.server_url }}/api/v1/repos/${{ github.repository }}
+          TAG:   ${{ github.ref_name }}
+        run: |
+          set -euo pipefail
+          body=$(cat <<EOF
+          Автоматический релиз $TAG.
+
+          Скачайте бинарь под свою ОС/архитектуру и положите на PATH.
+          Проверка целостности: \`sha256sum -c SHA256SUMS\`.
+          EOF
+          )
+          payload=$(jq -n --arg tag "$TAG" --arg body "$body" \
+            '{tag_name:$tag, name:$tag, body:$body, draft:false, prerelease:false}')
+          release_id=$(curl -fsSL -X POST \
+            -H "Authorization: token $TOKEN" \
+            -H "Content-Type: application/json" \
+            -d "$payload" \
+            "$API/releases" | jq -r .id)
+          for f in dist/*; do
+            name=$(basename "$f")
+            echo "uploading $name"
+            curl -fsSL -X POST \
+              -H "Authorization: token $TOKEN" \
+              -H "Content-Type: application/octet-stream" \
+              --data-binary "@$f" \
+              "$API/releases/$release_id/assets?name=$name" >/dev/null
+          done
+          echo "released $TAG with $(ls dist | wc -l) assets"

.gitignore

@@ -1,3 +1,4 @@
 /rb-search
+/dist/
 *.test
 *.out

Makefile

@@ -0,0 +1,33 @@
+VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo dev)
+LDFLAGS := -s -w -X main.version=$(VERSION)
+DIST    := dist
+
+PLATFORMS := \
+	linux/amd64 \
+	linux/arm64 \
+	darwin/amd64 \
+	darwin/arm64 \
+	windows/amd64
+
+.PHONY: build dist clean
+
+build:
+	CGO_ENABLED=0 go build -ldflags '$(LDFLAGS)' -o rb-search .
+
+dist:
+	@rm -rf $(DIST)
+	@mkdir -p $(DIST)
+	@for plat in $(PLATFORMS); do \
+		os=$${plat%/*}; arch=$${plat#*/}; \
+		ext=""; if [ "$$os" = "windows" ]; then ext=".exe"; fi; \
+		name=rb-search-$(VERSION)-$$os-$$arch$$ext; \
+		echo "  build $$name"; \
+		CGO_ENABLED=0 GOOS=$$os GOARCH=$$arch \
+			go build -trimpath -ldflags '$(LDFLAGS)' -o $(DIST)/$$name . || exit 1; \
+	done
+	@cd $(DIST) && sha256sum rb-search-* > SHA256SUMS
+	@echo "built artefacts:"
+	@ls -lh $(DIST)
+
+clean:
+	rm -rf $(DIST) rb-search

README.md

@@ -22,9 +22,36 @@
 
 ## Установка
 
+### Готовые бинари (рекомендуется)
+
+Собранные релизы лежат на странице
+[Releases](https://git.arx.ru/shuricken/rb-search/releases) — Linux/macOS/Windows,
+amd64 и arm64. Скачать соответствующий файл, проверить контрольную сумму
+из `SHA256SUMS` и положить на `PATH`:
+
+```bash
+# Linux/macOS, под свою архитектуру
+curl -LO https://git.arx.ru/shuricken/rb-search/releases/download/vX.Y.Z/rb-search-vX.Y.Z-linux-amd64
+curl -LO https://git.arx.ru/shuricken/rb-search/releases/download/vX.Y.Z/SHA256SUMS
+sha256sum --ignore-missing -c SHA256SUMS
+chmod +x rb-search-*
+sudo mv rb-search-* /usr/local/bin/rb-search
+```
+
+```powershell
+# Windows PowerShell
+Invoke-WebRequest -OutFile rb-search.exe `
+  https://git.arx.ru/shuricken/rb-search/releases/download/vX.Y.Z/rb-search-vX.Y.Z-windows-amd64.exe
+Move-Item rb-search.exe $env:USERPROFILE\bin\
+```
+
+Проверка установки: `rb-search version` → печатает версию.
+
+### Из исходников
+
 Нужен Go 1.22+. Бинарь самодостаточный, без внешних зависимостей в рантайме.
 
-### Из исходников (любая ОС)
+#### Любая ОС
 
 ```bash
 git clone ssh://git@git.arx.ru:2222/shuricken/rb-search.git
@@ -37,7 +64,7 @@ go build -o rb-search .
 - Linux/macOS: `install -m 0755 rb-search ~/.local/bin/` или `sudo mv rb-search /usr/local/bin/`
 - Windows (PowerShell): `Move-Item rb-search.exe $env:USERPROFILE\bin\`
 
-### Через `go install`
+#### Через `go install`
 
 ```bash
 go install git.arx.ru/shuricken/rb-search@latest
@@ -49,14 +76,14 @@ go install git.arx.ru/shuricken/rb-search@latest
 - fish: `fish_add_path (go env GOPATH)/bin`
 - Windows: `setx PATH "%PATH%;%USERPROFILE%\go\bin"` (новые терминалы)
 
-### Arch Linux
+#### Arch Linux
 
 ```bash
 sudo pacman -S go
 go install git.arx.ru/shuricken/rb-search@latest
 ```
 
-### Debian / Ubuntu
+#### Debian / Ubuntu
 
 ```bash
 sudo apt install golang-go
@@ -66,20 +93,20 @@ go install git.arx.ru/shuricken/rb-search@latest
 Если в репозитории старый Go (< 1.22) — собрать из исходников после установки
 `go` через `snap` или `gvm`.
 
-### macOS
+#### macOS
 
 ```bash
 brew install go
 go install git.arx.ru/shuricken/rb-search@latest
 ```
 
-### Windows
+#### Windows
 
 1. Поставить Go с https://go.dev/dl/.
 2. В PowerShell: `go install git.arx.ru/shuricken/rb-search@latest`.
 3. Бинарь окажется в `%USERPROFILE%\go\bin\rb-search.exe`.
 
-### Кросс-компиляция
+#### Кросс-компиляция
 
 С Linux собрать под другую платформу:
 

main.go

@@ -11,6 +11,9 @@ import (
 	"time"
 )
 
+// version is overridden at build time via -ldflags '-X main.version=...'.
+var version = "dev"
+
 const usage = `rb-search — peek into a RabbitMQ queue without consuming.
 
 Reads N=queue-depth messages with basic.get + manual ack, runs a substring
@@ -72,6 +75,9 @@ func run(args []string) error {
 			return cmdSetDefault(args[1:])
 		case "init":
 			return cmdInit(args[1:])
+		case "version", "--version", "-V":
+			fmt.Println(version)
+			return nil
 		case "help", "-h", "--help":
 			fmt.Print(usage)
 			return nil