chore(release): cut 2.6.0

Bump pubspec 2.5.0 -> 2.6.0 and move the Unreleased entries under a dated
2.6.0 heading. Minor (not patch) — the cut includes new features (vim
ex-line + gt/gT, crash-survivable logging, watchdog) alongside the fixes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -16,6 +16,8 @@ heading, and (b) bumping `pubspec.yaml` `version:` in the same commit.
 
 ## [Unreleased]
 
+## [2.6.0] — 2026-06-16
+
 ### Added
 
 - **Vim `gt` / `gT` tab motions.** Under the Vim preset, `gt`/`gT` cycle the

pubspec.yaml

@@ -13,7 +13,7 @@ description: >-
   subsystem handlers (pane, files, editor, git, pql), and the
   extension framework.
 publish_to: none
-version: 2.5.0
+version: 2.6.0
 repository: https://github.com/postmeridiem/clide
 # Short user-facing tagline (the welcome subtitle, web meta
 # description, etc.). Baked into lib/src/build_info.g.dart by