Add Activepieces integration for workflow automation

- Add Activepieces fork with SmoothSchedule custom piece
- Create integrations app with Activepieces service layer
- Add embed token endpoint for iframe integration
- Create Automations page with embedded workflow builder
- Add sidebar visibility fix for embed mode
- Add list inactive customers endpoint to Public API
- Include SmoothSchedule triggers: event created/updated/cancelled
- Include SmoothSchedule actions: create/update/cancel events, list resources/services/customers

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

activepieces-fork/packages/server/api/src/app/flags/theme.ts

@@ -0,0 +1,72 @@
+import tinycolor from 'tinycolor2'
+
+function generateColorVariations(defaultColor: string) {
+    const defaultColorObj = tinycolor(defaultColor)
+
+    const darkColor = defaultColorObj.clone().darken(2)
+    const baseLight = tinycolor('#ffffff')
+    const lightColor = tinycolor
+        .mix(baseLight, defaultColorObj.toHex(), 12)
+        .toHexString()
+    const mediumColor = defaultColorObj.clone().lighten(26)
+
+    return {
+        default: defaultColorObj.toHexString(),
+        dark: darkColor.toHexString(),
+        light: lightColor,
+        medium: mediumColor.toHexString(),
+    }
+}
+
+function generateSelectionColor(defaultColor: string) {
+    const defaultColorObj = tinycolor(defaultColor)
+    const lightColor = defaultColorObj.lighten(8)
+    return lightColor.toHexString()
+}
+
+export function generateTheme({
+    primaryColor,
+    fullLogoUrl,
+    favIconUrl,
+    logoIconUrl,
+    websiteName,
+}: {
+    primaryColor: string
+    fullLogoUrl: string
+    favIconUrl: string
+    logoIconUrl: string
+    websiteName: string
+}) {
+    return {
+        websiteName,
+        colors: {
+            avatar: '#515151',
+            'blue-link': '#1890ff',
+            danger: '#f94949',
+            primary: generateColorVariations(primaryColor),
+            warn: {
+                default: '#f78a3b',
+                light: '#fff6e4',
+                dark: '#cc8805',
+            },
+            success: {
+                default: '#14ae5c',
+                light: '#3cad71',
+            },
+            selection: generateSelectionColor(primaryColor),
+        },
+        logos: {
+            fullLogoUrl,
+            favIconUrl,
+            logoIconUrl,
+        },
+    }
+}
+
+export const defaultTheme = generateTheme({
+    primaryColor: '#6e41e2',
+    websiteName: 'Activepieces',
+    fullLogoUrl: 'https://cdn.activepieces.com/brand/full-logo.png',
+    favIconUrl: 'https://cdn.activepieces.com/brand/favicon.ico',
+    logoIconUrl: 'https://cdn.activepieces.com/brand/logo.svg',
+})