vstack 4.4.0

What's Changed

• Flightdeck: reduce linear-start launch friction by Brad (@bmethod) in #331
• Fix bot review wait for Claude summary comments by Brad (@bmethod) in #330
• Scope diff summary Rust risk flags to .rs diffs (#328) by @vg-claude in #332
• Fix linear auth diagnostics in session init by @vg-claude in #333
• Fix decider GNU grep resolution by @vg-claude in #334
• Recover stalled Claude bridge streams by @vg-claude in #335
• [codex] Fix bg subagent timeout watchdog by Brad (@bmethod) in #337
• Migrate deprecated Codex hook config to hooks by Brad (@bmethod) in #338
• Remove flightdeck; rename linear-orch/linear-dev to orch/dev with GitHub-lane support by Brad (@bmethod) in #341

Full Changelog: v4.3.0...v4.4.0