Sprout Desktop v0.3.5

• feat(mobile): Pulse polish — flat feed, compose page, shared filter chips, like + accent fixes (#796) (b82042090)
• feat(desktop): add standalone Playwright screenshot helper (#795) (10f37e4ca)
• feat(sprout-agent): load AGENTS.md and SKILL.md into system prompt (#762) (f34a21d32)
• feat: add code block support to message composer (#788) (85861f33f)
• fix(desktop): reap orphaned agent processes on shutdown and restart (#787) (7beb0f8e6)