perf: lazy-load sheets shortcuts by invocation

[fangshuyu-768]

Summary

Avoid loading the sheets shortcut registry and its embedded flag metadata on every lark-cli startup. Sheets shortcuts are now mounted only when the current invocation actually targets sheets (plus help sheets and shell completion paths).

Changes

• Carry bootstrap positional args through InvocationContext
• Keep sheets shortcuts out of the global shortcut init path
• Register sheets shortcuts conditionally based on the current invocation
• Add tests for bootstrap arg capture and sheets shortcut registration gating

Test Plan

• go test ./cmd ./shortcuts

Notes

• This PR is stacked on top of feat(sheets): spec-driven shortcut refactor with backward-compatible package #1220 and targets its branch directly.
• I also ran go test ./..., but there are unrelated existing failures outside this change area (for example in cmd/schema / internal/schema and environment-dependent e2e suites).

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: b86e75cf-e7fe-424f-8bd8-c3bd42cf6fb0

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/lazy-load-sheets-shortcuts

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}