umputun / revdiff / 24119004611

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global hunk navigation (#59)

* add plan: global-hunk-navigation

* feat: add hasNextFile/hasPrevFile helpers to fileTree

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat: add pendingHunkJump field for cross-file hunk navigation deferred positioning

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat: implement global hunk navigation with cross-file jump

Add handleHunkNav method to diffview.go that moves to next/prev hunk
regardless of which pane has focus. When at the last hunk of a file,
automatically navigates to the next file and lands on its first hunk
(and vice versa for backward navigation). Hunk nav keys are moved to
the global key switch so they work from the tree pane too.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat: verify acceptance criteria and fix handleKey cyclomatic complexity

Extracted openAnnotList helper and helpActive predicate to reduce
handleKey cyclomatic complexity from 22 to 20, satisfying gocyclo lint.
All tests pass, lint clean.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat: update docs for cross-file hunk navigation and complete plan

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* Reviews findings

* Fix lint failures

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Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

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