v0.43.2026040303

Changes:

• #4955: Bump electron from 37.8.0 to 39.8.4
• #4943: Add a new fetchedValue concept
• #4959: Address some PR comments from #4943
• #4949: edits: exp setup for improvements to multi sr
• #4945: fix: merge SDK anthropic-beta headers with base endpoint betas
• #4953: Prevent repeated foreground summarization after failure
• #4951: Updates to model

This list of changes was auto generated.