[router] 0.2.2 release

[slin1237]

Bug Fixes

• [router][grpc] Fix background tasks stored with wrong id #11945
• [router][grpc] Fix wram-up random token ids for small models #11887
• [router][grpc] Remove continue_final_message in ChatTemplateParams and add minijinja-contrib #11882
• [router] clean up workflow logs to debug for implementation details logs #11886
• Fix openai input_text type compatibility #11935
• fix(sql-router): fix conflict port in test #11826
• [router][grpc] Fix tool call id in parse_json_schema_response #12152
• [router] fix router release workflow and add build test in PR #12315
• [router][grpc] Fix inconsistent behavior of conversation_id not found #12299
• [bug] fix router installation to include additional dependency #12348
• [bug] fix router pypi license file #12345

Features

• [router][grpc] Support v1/responses API for non GPT OSS models #11926
• [router] create worker removal step and clean up worker manager #11921
• [grpc] Support gRPC standard health check #11955
• [router] Support multiple worker URLs for OpenAI router #11723
• [router] MCP Manager - Support Connection Pooling, Tool Inventory and Proxy #12097
• [router] Add mTLS Support for Router-to-Worker Communication #12019
• [router] implement response api get input item function and refactor input/output store #11924
• [router] use safety_identifier replace user on chat history storage #12185
• [router] Harmony Pipeline: Chat Completion & Responses API with MCP Support #12153
• [router] upgrade grpc dependency and py 3.13 3.14 support #12284
• [router] support arm, windows, mac, linux, reduce wheel size and number #12285
• [router] harmony responses api streaming support #12395
• [router] web_search_preview tool basic implementation #12290
• [router] web_search_preview tool basic implementation #12290

Enhancement, Code Clean Up

• [router] Add gRPC E2E test suite #11790
• [router] centralize mcp tool args handling #12155
• [router] fix ut router config init to use build pattern #12084
• [router] migrate app context to builder pattern 1/n #12086
• [router] migrate app context to builder pattern 2/n #12089
• [router] Add builder pattern for RouterConfig with zero duplication #12030
• [router] change ci names and update log level in ci #12021
• [router][CI] Clean up imports and prints statements in sgl-router/py_test #12024
• [router][grpc] Remove gpt_oss parsers and remove _parser suffix in tool parser files #12091
• [router] cleaned up all the redundant comments in the config module #12147
• [router][grpc] Add ResponsesContext and fix error propagation in responses api #12164
• [misc][grpc] Remove duplicate log #12168
• [router] Remove SharedXxxStorage type aliases to make Arc explicit #12171
• [router] add spec.rs to enables tests under spec folder #11734
• [doc] update router document #11767
• [router] Add comprehensive E2E tests for Response API #11988
• [router] Refactor data connector architecture with unified storage modules #12096
• [sgl-route] Optimize the use of constant slices and retain to simplif… #12159
• [router] update router docker to use maturin and build from local #12350
• [router] refactor mcp to use LRU and fix pooling bug #12346

Responses API

• Hosted WebSearchTool Integration when WebSearchTool in input
• WebSearch/MCP Streaming handling
• Structure outputs, functions calls and bulk inputs