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/pieces/community/letta/bun.lock

@@ -0,0 +1,17 @@
+{
+  "lockfileVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "@activepieces/piece-letta",
+      "dependencies": {
+        "@letta-ai/letta-client": "^1.3.1",
+        "tslib": "^2.3.0",
+      },
+    },
+  },
+  "packages": {
+    "@letta-ai/letta-client": ["@letta-ai/letta-client@1.3.1", "", {}, "sha512-L+R7Zjsy2flB0CsGn/a6LAtRpC4HPBXpfU6/K6Xfxl8tHJXzgCEOjAxAuC7SxF0sfSRMF72a/Ves2A15NrCSag=="],
+
+    "tslib": ["tslib@2.8.1", "", {}, "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w=="],
+  }
+}