Dashboard widgets gain menus, copy-paste, and versioned JSON import/export

What's Changed

Features

• feat(dashboards): widget menus, copy-paste, and versioned JSON import/export (LFE-10807) by @nkabardin in https://github.com/langfuse/langfuse/pull/14965
• feat(analytics): instrument filter/search-bar usage with PostHog (LFE-10781) by @nkabardin in https://github.com/langfuse/langfuse/pull/14929
• feat(analytics): instrument peek / graph / timeline / tree view usage (LFE-10786) by @nkabardin in https://github.com/langfuse/langfuse/pull/14947

Fixes

• fix(search-bar): Use LANGFUSE_AWS_BEDROCK_SMALL_MODEL for AI features by @bezbac in https://github.com/langfuse/langfuse/pull/14968
• fix(in-app-agent): delay feedback controls until turn ends by @LysanderKie in https://github.com/langfuse/langfuse/pull/14961
• fix(agent): Improve reaction to denied tool calls by @bezbac in https://github.com/langfuse/langfuse/pull/14967

Chores

• chore(deps): bump protobufjs to 7.6.5 by @nimarb in https://github.com/langfuse/langfuse/pull/14966
• chore(web): Enable knip dep checking & remove unused deps by @bezbac in https://github.com/langfuse/langfuse/pull/14960
• chore(vitest): Enable "silent: passed-only" by default by @bezbac in https://github.com/langfuse/langfuse/pull/14970
• chore(in-app agent): Improve 'thinking' chunks instrumentation by @LysanderKie in https://github.com/langfuse/langfuse/pull/14971

Full Changelog: https://github.com/langfuse/langfuse/compare/v3.211.0...v3.212.0