chore(symposium-acp-agent): release v1.2.0

[nikomatsakis]

🤖 New release

• symposium-acp-agent: 1.1.1 -> 1.2.0 (✓ API compatible changes)

Changelog

1.2.0 - 2026-01-08

Added

• add configurable agent extensions UI
• add --log-file option to vscodelm_cli example
• add vscodelm_cli example for debugging tool invocation
• accept RUST_LOG-style filter strings in --log argument
• race peek against cancellation in handle_vscode_tool_invocation
• expose one language model per ACP agent
• stream tool calls as markdown in VS Code LM provider
• pass chat request options from VS Code to Rust backend
• introduce HistoryActor for centralized session state management
• implement agent-internal tool permission bridging for vscodelm
• add cancellation support for vscodelm
• support AgentDefinition enum in vscodelm protocol
• add configurable agent backend to vscodelm
• add session UUID logging to vscodelm
• add session actor for VS Code LM provider
• (vscodelm) implement Component trait and add tests
• (vscode) add Language Model Provider prototype

Fixed

• strip mcp__ prefix in vscode_tools call_tool handler
• auto-approve tool requests from vscode tools
• don't race against stale cancel_rx when waiting for tool result
• don't race against stale cancel_rx when waiting for tool result
• use actual Eliza response in multi-turn test history
• defer session creation until first request arrives
• use VscodeToolsProxy in Conductor chain for MCP-over-ACP
• wrap agent in Conductor for MCP-over-ACP negotiation
• normalize messages for history matching
• correct McpServer serialization format in TypeScript
• handle all VS Code LM message part types correctly

Other

• Use spawn_blocking for binary download in resolve_distribution
• VSCode extension uses symposium-acp-agent registry commands
• Add registry subcommands and dynamic agent fetching
• Simplify Ferris component initialization
• Add unit tests for ConfigurationAgent
• Add act-as-configured mode for simplified editor setup
• Consolidate symposium-acp-proxy into symposium-acp-agent
• rename mcp server
• clarify why we are dropping request_state
• more DRY
• move vscodelm tests to separate module
• remove flaky vscodelm integration tests
• add vscodelm integration tests with expect_test assertions
• Revert "fix: use VscodeToolsProxy in Conductor chain for MCP-over-ACP"
• add RequestState::on_cancel helper for racing cancellation
• add cancel_tool_invocation helper and clean up race formatting
• handle_vscode_tool_invocation takes ownership pattern
• replace tokio::select! with futures-concurrency race
• pass invocation_tx to VscodeToolsMcpServer constructor
• apply edits from nikomatsakis review
• refactor session model and unify ContentPart type
• use MatchMessage in process_session_message
• use futures channels and merged streams for vscodelm cancellation
• cleanup logging a bit
• cleanup the method flow
• cleanup the test to avoid mutex
• (vscodelm) use expect-test for snapshot testing
• (vscodelm) remove unnecessary Arc from Eliza state
• (vscodelm) use sacp infrastructure for JSON-RPC

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