Backend Changes

⛔ Breaking Changes

• Restrict trace/metric storage configs to allow exactly one backend type (@yurishkuro in #7875)

✨ New Features

• Issue #7811: added grafana dashboard for metrics exporter (@Anmol202005 in #7903)

🐞 Bug fixes, Minor Improvements

• [fix] return empty array instead of nil from api/v3/services (@dee077 in #7926)
• [fix] return empty array instead of nil from queryservice.getservices (@sujalshah-bit in #7925)
• [fix] always return empty services list when none exist (@Sudhanshu-NITR in #7929)
• [fix] ensure badger maintenance is stopped before existing close() (@Yashika0724 in #7940)
• Use lazy initialization for storage factory (@Copilot in )

🚧 Experimental Features

• [clickhouse] add materialized view for event attribute metadata (@mahadzaryab1 in #7923)
• [clickhouse] rework clickhouse attributes to look up type for string attributes (@mahadzaryab1 in #7815)
• [mcp] add get_span_names tool for discovering span names (@sajal004004 in #7909)
• Use opentelemetry span_name terminology in jaegermcp extension (@Copilot in #7916)
• [mcp] implement get_critical_path tool (phase 3 steps 8-9) (@Copilot in )

👷 CI Improvements

• Fix metrics comparison workflow to reduce pr comment noise (@Copilot in #7957)
• Make spm integration test faster by flushing metrics more frequently (@Don-Assamongkol1 in #7861)
• Enable unhandled-error linter (@iypetrov in #7895)
• Fix(ci): fix codeql workflow to properly analyze go code (@jkowall in #7885)
• Implement pr quota workflow (@yurishkuro in #7882)

⚙️ Refactoring

• Enable confusing-naming linter rule (@SamyakBorkar in #7949)
• Replace panic calls with proper error handling (@aaryan359 in #7956)
• Fix time-naming linter violation in search_traces.go (@jkowall in #7913)
• [badger][v2] refactor factory signatures to use telemetry settings (@iypetrov in #7902)
• [cassandra] add omitempty notation for keyvalue and marshaller/unmarshaller for traceid (@Manik2708 in )

Documentation

• [chore]: add ai usage policy for contributions (@Sapthagiri777 in #7932)
• Docs: add quick start section with docker command (@njg7194 in #7945)
• Add claude.md as symlink to agents.md (@yurishkuro in #7934)
• Add security documentation for openssf silver badge (@jkowall in #7896)
• Adr-003 lazy storage factory initialization (@yurishkuro in #7886)

📊 UI Changes

✨ New Features

• New span colors from ibm palette (@yurishkuro in #3306)
• Better tree hierarchy for trace view (@yurishkuro in #3302)

🐞 Bug fixes, Minor Improvements

• Fix text overlapping in tracediff header (@greedy-wudpeckr in #3401)
• Fix linter error (@yurishkuro in #3510)
• Enable react-hooks/exhaustive-deps linter rule (@taanvi2205 in #3471)
• Fix: traceidsearchinput invisible text in light mode (@yosri-brh in #3464)
• [fix] fix the dark mode for tracediff nodes (@gulshank0 in #3474)

🚧 Experimental Features

• [otel migration] add runtime schema validation to v3 api client (@yurishkuro in #3448)
• [otel migration] phase 3.1: add jaegerclient v3 and use for services / operations (@yurishkuro in #3329)
• [otel] add more details to phase-3 (@yurishkuro in #3323)
• Otel migration - complete phase 2 validation (@yurishkuro in #3319)
• Clean up of opentracing/opentelemetry nomenclature (@yurishkuro in #3316)

👷 CI Improvements

• Add pr quota workflow (@yurishkuro in #3441)
• Calculate main and plexus test coverage separately (@yurishkuro in #3349)

⚙️ Refactoring

• Refactor: update detailspanel to functional component (@Harshdev098 in #3358)
• Update @types/redux-actions to v2.6.5 (@Parship12 in #3498)
• Refactor(plexus): convert svgedgeslayer from class to functional component (@thc1006 in #3409)
• Refactor accordionlinks to functional component (@aaryan359 in #3406)
• Convert measurablenodeslayer to functional component (@Parship12 in #3429)