Add Mail user sender controls

[cong-we]

Adds Mail API registry data and updates the lark-mail skill documentation so the CLI can expose user-level allow/block sender operations.

• Adds registry metadata for user mailbox allow-sender and blocked-sender resources.
• Documents user-token usage, required scopes, and command examples for listing, adding, and removing senders.
• Refreshes the mail skill command catalog and scope reference for the new operations.

Summary by CodeRabbit

• Documentation
  • Expanded guidance for Feishu mail tasks, including drafting, sending, replying, forwarding, reading, searching, and handling scheduled sends.
  • Added clearer instructions for safe email operations, recipient confirmation, sender allow/block lists, templates, and public mailbox “send as” use.
  • Improved HTML email guidance with formatting rules, linting behavior, and stronger content-handling recommendations.
  • Updated workflow and shortcut reference details for more consistent mail-related usage.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: d5d5c98a-5169-49bd-88a5-09c583b1a181

📥 Commits

Reviewing files that changed from the base of the PR and between 4c31323 and 58ad09a.

📒 Files selected for processing (2)

• internal/registry/meta_data.json
• skills/lark-mail/SKILL.md

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📝 Walkthrough

Walkthrough

The mail skill guide was expanded with updated capability descriptions, safety confirmations, recipient search instructions, send and send_as workflows, HTML writing and linting rules, template and shortcut guidance, sender list operations, and refreshed API and permission tables.

Changes

Lark Mail skill documentation

Layer / File(s)	Summary
Scope and safety baseline skills/lark-mail/SKILL.md	Updated the skill description, startup instruction, core concepts, and confirmation rules for user-level sender list writes.
Workflow and recipient lookup skills/lark-mail/SKILL.md	Reworked the workflow order, -h discovery guidance, and recipient search steps before using addresses.
Send, status, and send-as flow skills/lark-mail/SKILL.md	Expanded send confirmation, send_status checks, scheduled-send handling, send_as, recall, sharing, calendar invites, and HTML-first composition rules.
HTML writing and templates skills/lark-mail/SKILL.md	Revised HTML style constraints, raw EML restrictions, HTML lint behavior, read-output options, template handling, and raw API guidance.
Shortcut and sender list reference skills/lark-mail/SKILL.md	Updated shortcut semantics and added +lint-html plus user-level sender allow/block list commands.
API resources and scopes skills/lark-mail/SKILL.md	Expanded API resource listings and refreshed scopes for rules, threads, templates, and sender allow/block operations.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related PRs

• larksuite/cli#749: Introduces the mail safety rules that this PR extends for confirmation and untrusted-content handling.
• larksuite/cli#1261: Covers the same mail read/triage shortcut semantics that this PR revises in the workflow and shortcut sections.
• larksuite/cli#228: Overlaps on mail read output behavior, including structured JSON and --html=false handling.

Suggested reviewers

• chanthuang
• infeng

Poem

I hopped through SKILL.md with a twitchy nose,
🐰 From drafts to send_status, the mailbox glows.
I nibbled on HTML lint and template leaves,
Then waved at sender lists beneath the eaves.
Hop-hop—Feishu mail now sings in tune,
Under a carrot-bright June moon.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: adding user-level Mail sender controls.
Description check	✅ Passed	The description covers summary and changes well, though it omits the template's Test Plan and Related Issues sections.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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