fix(im): make flag list page-all exhaustive

[AaronZ345]

Summary

Fixes #1859. im +flag-list --page-all now exhausts all pages by default instead of silently stopping after 20, so agents do not treat a partial count of zero as the real flagged count.

Changes

• Make --page-limit 0 the default and define it as unlimited pagination.
• Keep explicit positive page limits, but mark early results with truncated: true and emit a stderr warning.
• Add a 21-page regression test that fails under the old hidden 20-page cap.
• Cover validation, limited-result signaling, CLI dry-run, and user-facing documentation.

Test Plan

• GOTOOLCHAIN=go1.23.0 go test ./shortcuts/im -count=1
• LARK_CLI_BIN=<absolute-built-binary> GOTOOLCHAIN=go1.23.0 go test ./tests/cli_e2e/im -run TestIM_FlagDryRun -count=1
• GOTOOLCHAIN=go1.23.0 go vet ./...
• GOTOOLCHAIN=go1.23.0 go run github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.1.6 run --new-from-rev=origin/main (0 issues)
• gofmt -l . (no output)
• GOTOOLCHAIN=go1.23.0 go mod tidy (no diff)

GOTOOLCHAIN=go1.23.0 make unit-test passed all changed and related packages, including shortcuts/im. On this machine, the unrelated shortcuts/minutes download tests fail because the environment resolves/blocks example.com as a local/internal host; no minutes code is changed by this PR.

Related Issues

• Fixes im +flag-list: 默认分页截断导致有效标记数量误报为 0，无法快速读取实时 Flagged 数量 #1859

Summary by CodeRabbit

• New Features
  • im +flag-list --page-all --page-limit 0 now enables unlimited pagination, and --page-limit now defaults to 0 (max 1000).
  • When pagination ends early, results include truncated: true.
  • Pagination warnings are shown only when --page-limit is set to a value greater than 0.
• Documentation
  • Updated command reference to reflect the new unlimited default and the truncated response field behavior.

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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: 79742a91-b421-41bd-9cbb-183c8fbc142a

📥 Commits

Reviewing files that changed from the base of the PR and between 3ba90e8 and a654e6f.

📒 Files selected for processing (1)

• shortcuts/im/im_flag_list.go

💤 Files with no reviewable changes (1)

• shortcuts/im/im_flag_list.go

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📝 Walkthrough

Walkthrough

The IM flag list command now defaults --page-limit to unlimited pagination, accepts zero as valid, continues until the API has no more pages, and reports truncation when a positive limit stops retrieval early. Tests and command documentation cover the updated behavior.

Changes

IM flag pagination

Layer / File(s)	Summary
Page-limit contract and validation shortcuts/im/im_flag_list.go, shortcuts/im/im_flag_test.go	--page-limit defaults to 0, accepts 0..1000, and rejects negative values.
Pagination and truncation handling shortcuts/im/im_flag_list.go, shortcuts/im/im_flag_test.go	Unlimited mode fetches pages until has_more is false; limited mode marks output as truncated and emits a warning when more pages remain.
Documentation and CLI verification skills/lark-im/references/lark-im-flag-list.md, tests/cli_e2e/im/flag_workflow_test.go	Documentation describes the new default and response field, while the dry-run workflow verifies page-limit zero.

Estimated code review effort: 2 (Simple) | ~10 minutes

Sequence Diagram(s)

sequenceDiagram
  participant CLI
  participant executeListAllPages
  participant LarkIMFlagsAPI
  CLI->>executeListAllPages: pass page-limit
  executeListAllPages->>LarkIMFlagsAPI: request flag page
  LarkIMFlagsAPI-->>executeListAllPages: flags and has_more
  executeListAllPages->>LarkIMFlagsAPI: request next page when unlimited or below limit
  executeListAllPages-->>CLI: merged response with truncated when limited

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Suggested labels: feature

Suggested reviewers: liangshuo-1, yangjunzhou-01

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 33.33% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main behavior change: making im +flag-list --page-all exhaust pagination.
Description check	✅ Passed	The description follows the template and includes the required summary, changes, test plan, and related issues sections.
Linked Issues check	✅ Passed	The PR satisfies #1859 by removing the hidden 20-page cap and clearly signaling truncation for bounded pagination.
Out of Scope Changes check	✅ Passed	All changes are directly tied to pagination behavior, tests, or documentation for the linked issue, with no unrelated scope.

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[AaronZ345]

@finebyme99 @liangshuo-1 Could you please review this fix for the silent 20-page truncation in im +flag-list --page-all? It includes a 21-page regression test, explicit truncation signaling for positive limits, and CLI dry-run coverage. If it looks good, a merge would be appreciated.

[coderabbitai]

🧹 Nitpick comments (1)

shortcuts/im/im_flag_list.go (1)

226-229: 📐 Maintainability & Code Quality | 🔵 Trivial | 💤 Low value

Remove redundant bounds check.

Since validateListOptions already strictly enforces that --page-limit is between 0 and 1000, maxPages will never exceed 1000 when execution reaches this point. This clamping check is dead code and can be safely removed.

♻️ Proposed refactor

 	maxPages := rt.Int("page-limit")
-	if maxPages > 1000 {
-		maxPages = 1000
-	}
 
 	// Use make([]any, 0) to ensure empty arrays serialize as [] not null

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@shortcuts/im/im_flag_list.go` around lines 226 - 229, Remove the redundant
maxPages upper-bound clamping after reading the "page-limit" option in the
flag-list flow. Rely on validateListOptions to enforce the 0–1000 range and keep
the validated value unchanged.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Nitpick comments:
In `@shortcuts/im/im_flag_list.go`:
- Around line 226-229: Remove the redundant maxPages upper-bound clamping after
reading the "page-limit" option in the flag-list flow. Rely on
validateListOptions to enforce the 0–1000 range and keep the validated value
unchanged.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: e27558d3-c36d-4b0e-9361-4a0d42c88940

📥 Commits

Reviewing files that changed from the base of the PR and between 37d490a and 3ba90e8.

📒 Files selected for processing (4)

• shortcuts/im/im_flag_list.go
• shortcuts/im/im_flag_test.go
• skills/lark-im/references/lark-im-flag-list.md
• tests/cli_e2e/im/flag_workflow_test.go