v0.2.7-rc.1

What's Changed

• feat(tui): remember last-opened project across sessions by @mighty840 in #40
• feat(tui): cluster backup dashboard with per-node trigger by @mighty840 in #42
• feat(tui): webhook management view by @mighty840 in #43
• feat(tui): secrets organizer — group by scope, show service refs by @mighty840 in #44
• feat(tui): cluster networks view by @mighty840 in #45
• E2E nightly suite: fix latent failures, wire HTTP fallback, add 14 regression tests by @mighty840 in #46

Full Changelog: v0.2.6-rc.7...v0.2.7-rc.1