feat(cli): export and import sessions

[uinstinct]

Description

Add the ability to export a selected session and import it by path of the file.

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Checklist

• [] I've read the contributing guide
• [] The relevant docs, if any, have been updated or created
• [] The relevant tests, if any, have been updated or created

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Summary by cubic

Add CLI support to export a session to JSON and import a session from a file. Adds new slash commands and a TUI export selector to make moving sessions easy.

• New Features

  • Added /export to open an Export selector in the TUI; saves continue-session-<id>.json in the current directory with version: 1 and exportedAt.
  • Added /import <file-path> with clear errors for missing path, missing file, invalid JSON, or unsupported export (expects version: 1).
  • On import, if the sessionId exists, a new UUID is generated and the session is saved without overwriting; output shows original and new IDs.
  • Registered export and import in system slash commands; wired TUI navigation and system messages for success/failure.

• Bug Fixes

  • Stabilized slashCommands tests by mocking path.isAbsolute, path.resolve, and core/util/history.js to avoid filesystem calls.

^{Written for commit ab8760e. Summary will update on new commits.}

[cubic-dev-ai]

3 issues found across 8 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="extensions/cli/src/slashCommands.ts">

<violation number="1" location="extensions/cli/src/slashCommands.ts:199">
P2: `/import` only uses `args[0]`, so file paths containing spaces are truncated and reported as missing.</violation>

<violation number="2" location="extensions/cli/src/slashCommands.ts:218">
P2: Import command lacks runtime validation of exported session format/version before persistence, allowing incompatible or malformed session data to be saved.</violation>

<violation number="3" location="extensions/cli/src/slashCommands.ts:222">
P1: Import collision detection only checks 1000 sessions, so duplicate IDs outside that window can be missed and existing sessions overwritten.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

[RomneyDa]

@uinstinct nice addition!

[RomneyDa]

@uinstinct nice addition!