feat: unify version management with VERSION file and bump workflow

Add a single VERSION file (0.1.0) as the source of truth for both
Go backend and Android app. Makefile reads from VERSION with git
describe fallback, build.gradle.kts dynamically loads ../VERSION,
and .goreleaser.yaml now has explicit ldflags matching Go variables.
Includes a version-bump GitHub Actions workflow for automated semver
bumps and a release validation step to ensure tag/VERSION consistency.

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

.github/workflows/release.yml

@@ -30,6 +30,17 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Validate version
+        env:
+          TAG_VERSION: ${{ inputs.tag }}
+        run: |
+          FILE_VERSION=$(cat VERSION)
+          TAG_VERSION="${TAG_VERSION#v}"
+          if [ "$FILE_VERSION" != "$TAG_VERSION" ]; then
+            echo "::error::Tag ($TAG_VERSION) ≠ VERSION file ($FILE_VERSION). Run version-bump first."
+            exit 1
+          fi
+
       - name: Create and push tag
         shell: bash
         env:

.github/workflows/version-bump.yml

@@ -0,0 +1,54 @@
+name: Version Bump
+on:
+  workflow_dispatch:
+    inputs:
+      bump:
+        description: "Semver bump type"
+        required: true
+        type: choice
+        options:
+          - patch
+          - minor
+          - major
+
+permissions:
+  contents: write
+
+jobs:
+  bump:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Read current version
+        id: current
+        run: echo "version=$(cat VERSION)" >> "$GITHUB_OUTPUT"
+
+      - name: Calculate next version
+        id: next
+        run: |
+          IFS='.' read -r major minor patch <<< "${{ steps.current.outputs.version }}"
+          case "${{ inputs.bump }}" in
+            major) major=$((major+1)); minor=0; patch=0 ;;
+            minor) minor=$((minor+1)); patch=0 ;;
+            patch) patch=$((patch+1)) ;;
+          esac
+          echo "version=${major}.${minor}.${patch}" >> "$GITHUB_OUTPUT"
+
+      - name: Update VERSION file
+        run: echo "${{ steps.next.outputs.version }}" > VERSION
+
+      - name: Increment versionCode
+        run: |
+          FILE=android/app/build.gradle.kts
+          CODE=$(grep -oP 'versionCode\s*=\s*\K\d+' "$FILE")
+          sed -i "s/versionCode\s*=\s*[0-9]\+/versionCode = $((CODE+1))/" "$FILE"
+          echo "versionCode: $CODE -> $((CODE+1))"
+
+      - name: Commit and push
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add VERSION android/app/build.gradle.kts
+          git commit -m "chore: bump version to ${{ steps.next.outputs.version }}"
+          git push

.goreleaser.yaml

@@ -18,6 +18,11 @@ builds:
       - arm64
       - arm
     main: ./cmd/clawdroid
+    ldflags:
+      - -s -w
+      - -X main.version={{.Version}}
+      - -X main.gitCommit={{.Commit}}
+      - -X main.buildTime={{.Date}}
 
 archives:
   - formats: [tar.gz]

Makefile

@@ -7,7 +7,7 @@ CMD_DIR=cmd/$(BINARY_NAME)
 MAIN_GO=$(CMD_DIR)/main.go
 
 # Version
-VERSION?=$(shell git describe --tags --always --dirty 2>/dev/null || echo "dev")
+VERSION?=$(shell cat VERSION 2>/dev/null || git describe --tags --always --dirty 2>/dev/null || echo "dev")
 GIT_COMMIT=$(shell git rev-parse --short=8 HEAD 2>/dev/null || echo "dev")
 BUILD_TIME=$(shell date +%FT%T%z)
 GO_VERSION=$(shell $(GO) version | awk '{print $$3}')

VERSION

@@ -0,0 +1 @@
+0.1.0

android/app/build.gradle.kts

@@ -13,6 +13,9 @@ val keystoreProperties = Properties().apply {
     }
 }
 
+val versionFile = rootProject.file("../VERSION")
+val appVersionName = if (versionFile.exists()) versionFile.readText().trim() else "0.1.0"
+
 android {
     namespace = "io.clawdroid"
     compileSdk = libs.versions.android.compileSdk.get().toInt()
@@ -22,7 +25,7 @@ android {
         minSdk = libs.versions.android.minSdk.get().toInt()
         targetSdk = libs.versions.android.targetSdk.get().toInt()
         versionCode = 1
-        versionName = "1.0.0"
+        versionName = appVersionName
     }
 
     signingConfigs {