fix: add workflow-prepare.sh for CGO SQLite dependencies

Problem:
- CGO builds failing in CI with "cannot find sqlite3.h"
- go-release-cgo.yaml workflow looks for workflow-prepare.sh to install deps
- Script was missing, causing build failures

Solution:
- Created workflow-prepare.sh to install SQLite development headers
- Platform-specific installation:
  - Linux (Ubuntu/Debian): libsqlite3-dev via apt-get
  - Linux (RHEL/CentOS): sqlite-devel via yum
  - Linux (Alpine): sqlite-dev via apk
  - macOS: sqlite3 via Homebrew (if needed)
  - Windows: Downloads SQLite amalgamation, sets CGO_CFLAGS/CGO_LDFLAGS
- Includes verification step to confirm SQLite availability

This script is automatically called by the shared GitHub Actions workflow
before running GoReleaser builds with CGO_ENABLED=1.

workflow-prepare.sh

@@ -0,0 +1,78 @@
+#!/bin/bash
+# Workflow prepare script for CI/CD
+# Installs CGO dependencies for SQLite support
+
+set -e
+
+echo "=== GoHoarder Workflow Prepare ==="
+echo "Host OS: $(uname -s)"
+echo "Target GOOS: ${TARGET_GOOS:-auto}"
+echo "Target GOARCH: ${TARGET_GOARCH:-auto}"
+
+# Detect host OS
+HOST_OS=$(uname -s | tr '[:upper:]' '[:lower:]')
+
+# Install SQLite development headers based on platform
+case "$HOST_OS" in
+    linux*)
+        echo "Installing SQLite development headers for Linux..."
+        if command -v apt-get &> /dev/null; then
+            # Ubuntu/Debian
+            sudo apt-get update -qq
+            sudo apt-get install -y -qq libsqlite3-dev
+        elif command -v yum &> /dev/null; then
+            # RHEL/CentOS
+            sudo yum install -y sqlite-devel
+        elif command -v apk &> /dev/null; then
+            # Alpine
+            sudo apk add --no-cache sqlite-dev
+        fi
+        echo "✓ SQLite headers installed"
+        ;;
+
+    darwin*)
+        echo "Installing SQLite for macOS..."
+        # macOS usually has SQLite via Xcode Command Line Tools
+        # but ensure it's available via Homebrew if needed
+        if ! pkg-config --exists sqlite3; then
+            brew install sqlite3
+        fi
+        echo "✓ SQLite available"
+        ;;
+
+    mingw*|msys*|cygwin*)
+        echo "Installing SQLite for Windows..."
+        # Download SQLite amalgamation for Windows
+        SQLITE_VERSION="3470200"
+        SQLITE_YEAR="2024"
+        SQLITE_DIR="/c/sqlite"
+        SQLITE_URL="https://www.sqlite.org/${SQLITE_YEAR}/sqlite-amalgamation-${SQLITE_VERSION}.zip"
+
+        mkdir -p "$SQLITE_DIR"
+        curl -sSL "$SQLITE_URL" -o /tmp/sqlite.zip
+        unzip -q /tmp/sqlite.zip -d /tmp/
+        cp /tmp/sqlite-amalgamation-${SQLITE_VERSION}/* "$SQLITE_DIR/"
+        rm -rf /tmp/sqlite.zip /tmp/sqlite-amalgamation-${SQLITE_VERSION}
+
+        echo "CGO_CFLAGS=-I${SQLITE_DIR}" >> "$GITHUB_ENV"
+        echo "CGO_LDFLAGS=-L${SQLITE_DIR}" >> "$GITHUB_ENV"
+        echo "✓ SQLite setup complete"
+        ;;
+
+    *)
+        echo "Unknown OS: $HOST_OS - skipping SQLite setup"
+        ;;
+esac
+
+# Verify SQLite is available
+echo ""
+echo "=== Verifying SQLite availability ==="
+if pkg-config --exists sqlite3; then
+    echo "✓ SQLite pkg-config found"
+    pkg-config --modversion sqlite3
+else
+    echo "⚠ SQLite pkg-config not found (may still work via system headers)"
+fi
+
+echo ""
+echo "=== Workflow prepare complete ==="