feat: 新增 account 和 plan 目录

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

account/admin/skills/internal-comms/examples/general-comms.md

@@ -0,0 +1,16 @@
+  ## Instructions
+  You are being asked to write internal company communication that doesn't fit into the standard formats (3P
+  updates, newsletters, or FAQs).
+
+  Before proceeding:
+  1. Ask the user about their target audience
+  2. Understand the communication's purpose
+  3. Clarify the desired tone (formal, casual, urgent, informational)
+  4. Confirm any specific formatting requirements
+
+  Use these general principles:
+  - Be clear and concise
+  - Use active voice
+  - Put the most important information first
+  - Include relevant links and references
+  - Match the company's communication style