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[tool_extensibility] Prototype Phase 2: Generic RPC protocol base and isolate runner infrastructure #190746

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@bkonyi

Part of the tool extensibility prototype effort.

Implement prototype JSON-RPC framing, isolate lifecycle management, and discovery:

  • ToolExtensionEntryPoint, ToolExtensionService, ToolExtensionRunner.
  • Host-side ExtensionManager and ExtensionDiscovery.
  • Isolate startup, capability handshake, error containment, and shutdown hooks.

Related PR: #190734

Activity

  1. self-assigned this
    on Aug 7, 2026
  2. added
    P1High-priority issues at the top of the work list
    team-toolOwned by Flutter Tool team
    triaged-toolTriaged by Flutter Tool team
    on Aug 7, 2026
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P1High-priority issues at the top of the work listteam-toolOwned by Flutter Tool teamtriaged-toolTriaged by Flutter Tool team

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