Add --compact JSON output mode to entire search (ENT-1527)

[evisdren]

Summary

• entire search --json embeds each checkpoint's full prompt, so a default page runs 10–36KB — the dominant token cost for AI-agent consumers (see ENT-1527).
• Adds --compact (implies --json, rejected with --code): per hit only id, type, repo (org/name), branch, author, date, filesTouched, rerank score, and a whitespace-collapsed title snippet truncated to 200 runes — never the full prompt. Envelope (total/page/total_pages/limit/counts) matches the full JSON mode.
• Agents fetch full detail for the one hit they care about via entire checkpoint explain <id>. Extracted a shared paginateSearchResults helper so both JSON writers use the same client-side pagination.

Test plan

• mise run fmt && mise run lint — clean
• Unit + integration tests (mise run check)
• E2E canary (Vogon + roger-roger) — all passed
• New tests: compact output shape (full prompt absent), long-prompt title truncation, --compact + --code rejection

🤖 Generated with Claude Code

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Note

Low Risk
CLI-only output formatting and flag validation; no auth, API, or data-path changes.

Overview
Adds --compact to entire search and entire checkpoint search for agent-friendly JSON. It implies --json and emits a slim per-hit shape (id, type, repo, branch, author, date, filesTouched, score, truncated title) instead of full checkpoint prompts; --compact with --code is rejected.

Pagination logic is factored into paginateSearchResults, shared by full and compact JSON writers. Help and examples document the new flag; tests cover compact shape, long-title truncation, and the --code incompatibility.

^{Reviewed by Cursor Bugbot for commit 3888ec4. Configure here.}

[Copilot]

Pull request overview

Adds an agent-friendly --compact JSON output mode to entire search / entire checkpoint search, reducing per-hit payload size by omitting full prompts while keeping the existing JSON envelope and pagination behavior consistent.

Changes:

• Added --compact flag (implies --json, rejected with --code) and routed JSON output to a new compact writer.
• Factored client-side pagination into a shared paginateSearchResults helper used by both JSON writers.
• Added tests covering compact shape (no full prompt), title truncation, and --compact + --code validation; updated help examples.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
cmd/entire/cli/search_cmd.go	Adds --compact flag, shared pagination helper, and compact JSON writer that truncates title snippets and excludes full prompts.
cmd/entire/cli/search_cmd_test.go	Adds unit tests for compact JSON output and flag incompatibility behavior.
cmd/entire/cli/checkpoint_group.go	Updates canonical checkpoint search help examples to include --compact.