[DOCS] CLI reference missing --from-pr flag for PR-linked session resume

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://code.claude.com/docs/en/cli-reference

Section/Topic

CLI flags table

Current Documentation

The CLI flags table documents --resume and --continue for session management, but does not include the --from-pr flag:

| `--resume`, `-r` | Resume a specific session by ID or name, or show an interactive picker to choose a session | `claude --resume auth-refactor` |

What's Wrong or Missing?

Changelog v2.1.27 added --from-pr flag to resume sessions linked to a specific GitHub PR number or URL, but this flag is not documented in the CLI reference.

Users who want to resume sessions associated with their pull requests have no way to discover this capability through documentation.

Suggested Improvement

Add a new row to the CLI flags table:

| `--from-pr`                            | Resume a session linked to a specific GitHub PR number or URL                                                                                                                                             | `claude --from-pr 123` or `claude --from-pr https://github.com/org/repo/pull/123`                  |

Also consider adding this to the "Resume or fork sessions" section in how-claude-code-works.md to explain the PR-session linking workflow.

Impact

Medium - Makes feature difficult to understand

Additional Context

Source: Changelog v2.1.27

Exact changelog entry:

Added --from-pr flag to resume sessions linked to a specific GitHub PR number or URL