What's Changed

Features

• feat(sfdc): add plan and lead sources to SFDC sync and prep backfill script by @Steffen911 in #14505
• feat(web): dark mode updates - layering model by @nmtrang29 in #15116
• feat(assistant): Make assistant quick actions context-aware and extend coverage by @LysanderKie in #15146
• feat(monitors): deep-link alerts to the traces/observations table for the breaching window (LFE-11022) by @nkabardin in #15192

Fixes

• fix(observability): stop sending opaque non-Error captures to Sentry (LANGFUSE-5EX cluster) by @nkabardin in #15175
• fix(web): preserve casing of prompt version labels in UI by @CodeCLS in #15185
• fix(prompts): read v4 usage from events by @hassiebp in #15184
• fix(trace): capture the real error on I/O parse-worker load failure (LANGFUSE-421/41Z) by @nkabardin in #15173

Chores

• chore(deps): bump ws to 8.21.1 by @nimarb in #15188

Full Changelog: v3.218.0...v3.219.0