Integrate session checkpoint into Resume AI CLI flow

[Copilot]

Resuming an AI CLI session now offers an immediate checkpoint prompt instead of requiring a separate transient action. This folds checkpoint capture into the resume workflow and removes the extra dedicated menu entry.

• Resume flow

  • Route C-c a R through a small wrapper around ai-code-cli-resume
  • Preserve existing prefix-arg behavior for backend-specific resume flows
  • Prompt after resume: Print AI session checkpoint?
  • Reuse the existing ai-code-session-checkpoint implementation when the user confirms

• Transient menu

  • Keep Resume AI CLI in the AI CLI session section
  • Remove the standalone AI session checkpoint entry from Other Tools

• Targeted test updates

  • Cover resume-menu wiring to the new wrapper
  • Cover checkpoint prompt accept/decline behavior
  • Cover removal of the old transient entry

(defun ai-code-cli-resume-with-session-checkpoint (&optional arg prompt-for-checkpoint)
  (interactive (list current-prefix-arg t))
  (ai-code-cli-resume arg)
  (when (and prompt-for-checkpoint
             (y-or-n-p "Print AI session checkpoint? "))
    (ai-code-session-checkpoint)))

[Copilot]

Pull request overview

This PR integrates session checkpoint capture into the “Resume AI CLI” workflow, so resuming a backend session can immediately prompt the user to request a checkpoint, and removes the now-redundant standalone checkpoint menu entry.

Changes:

• Add ai-code-cli-resume-with-session-checkpoint, an interactive wrapper around ai-code-cli-resume that optionally prompts Print AI session checkpoint? and reuses ai-code-session-checkpoint.
• Update the AI CLI session transient so R routes through the new wrapper, and remove the P “AI session checkpoint” entry from Other Tools.
• Expand ERT coverage for menu wiring, prompt accept/decline behavior, and removal of the old transient entry.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
ai-code.el	Adds checkpoint-aware resume wrapper; updates transient bindings to use it; removes standalone checkpoint entry.
test/test_ai-code.el	Adds/updates tests for the new resume flow and transient menu changes.

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