… spec.

Replace MSBuild-based add-in discovery (2x dotnet build, 10-30s) with direct .targets XML parsing from the NuGet cache (~110ms).- Add TargetsAddInResolver that parses packages.json and buildTransitive/*.targets- Fix NUGET_PACKAGES="" producing dangerous relative paths in GetNuGetCachePaths- Add --addins flag to Host to skip MSBuild discovery when paths are pre-resolved- Forward --addins from controller to child server process- Resolve add-ins in CLI start and MCP paths before launching the host- Add --addins-only flag to disco command for pipe-friendly output- Show add-ins section with discovery method and duration in disco output- Add 18 unit tests for TargetsAddInResolver

…fixes- Add DotNetVersionCache to avoid repeated `dotnet --version` subprocess  calls during startup (disk cache with 24h TTL + global.json sdk.version  invalidation key)- Integrate cache into UnoToolsLocator and register in DI- Add EntryPoint regression tests to lock VS extension reflection-probed  type names and constructor signatures- Fix MCP notification name in dev-server.md (tools/list_changed)- Add missing tools to using-the-uno-mcps.md (uno_app_start, Business tier)- Add --mcp-wait-tools-list to Antigravity setup guide- Add antigravity to ClientsWithoutListUpdateSupport in McpProxy- Create devserver-agent.md and reference it in AGENTS.md

… diagnostics- Enable tool cache unconditionally in --mcp-app mode for < 1s first list_tools- Add 30s bounded timeout to list_tools and EnsureRootsInitialized (no more infinite blocking)- Fix McpClientProxy TCS completion on connection error (prevents permanent deadlock)- Fix DisposeAsync hang by canceling TCS before awaiting client disposal- Remove incorrect ResourceUpdatedNotificationParams deserialization for ToolListChanged- Always invoke toolListChanged callback even with 0 tools to unblock waiters- Return structured MCP error responses for premature tool calls instead of exceptions- Add uno_health built-in tool with HealthReport model for startup diagnostics- Add 17 unit tests covering serialization, timeout patterns, and cache integration

…overyAdd 17 unit tests (addins flag parsing, controller forwarding, NuGetcache path guard) and 5 PowerShell integration test functions (discoJSON output, addins-only, cleanup, Host --addins flag, package content).

Upgrade ModelContextProtocol SDK from 0.4.1 to 0.8.0. Add uno://healthMCP resource, HealthReport fields (UnoSdkVersion, DiscoveryDurationMs),cache invalidation metadata (workspace hash, SDK version), and atomiccache writes.

- Link AmbientRegistry and CsprojUserGenerator sources into CLI project- Check AmbientRegistry for existing DevServer before launching- Write .csproj.user files CLI-side before server launch- Launch Host directly without --command start (2-process chain)- Manage long-running server process lifecycle and cleanup- Call StopMonitoringAsync on MCP proxy shutdown- Add Phase 1b unit tests for AmbientRegistry and direct launch args- Document IDEChannel single-connection limitation

- TCS resettable via ResetConnectionAsync (bugs 1+4)- Monitor loop continues after ServerStarted, raises ServerCrashed (bug 2)- Notification handler awaits async callback (bug 3)- Add 11 regression and bug-exposing tests

Extract health reporting into a dedicated HealthService class:- BuildHealthReport(), BuildHealthToolResponse()- HealthTool static Tool definition- HealthResourceUri constantMcpProxy now delegates all health logic to HealthService via DI.

Extract tool caching and list operations into ToolListManager:- GetCachedTools(), PersistToolCacheIfNeeded(), RefreshCachedToolsFromUpstreamAsync()- ListToolsWithTimeoutAsync(), FetchToolsFromUpstreamAsync(), AppendBuiltInTools()- InitializeToolCachePath(), MarkShouldRefresh()HealthService now uses ToolListManager.CachedToolCount directly.

Pure rename for clarity — McpUpstreamClient better describes its roleas the connection to the upstream DevServer MCP host.

Extract MCP Host building and handler registration into McpStdioServer:- BuildHost() constructs the stdio MCP server with all 4 handlers- Lifecycle-specific behavior injected via delegates- McpProxy now calls BuildHost() then wires callbacks and runs

McpProxy now only contains lifecycle orchestration (roots, DevServerstartup, cache priming, event wiring). The new name reflects its role.

- Split Given_McpProxy into 5 test classes matching production classes  (Given_HealthService, Given_ToolCacheFile, Given_McpUpstreamClient,  Given_DevServerMonitor, Given_McpStdioServer)- Add XML doc comments on test classes with <see cref> to tested class- Add MSTest [Description] on non-trivial test methods- Rename mcpClientProxy parameter to mcpUpstreamClient in all classes- Replace "MCP proxy" with "MCP bridge" / "stdio server" in docs and logs- Remove Phase 1b/1c-1 references from code comments- Add [Retry(2)] on intermittent DevServer process tests

Add observational state machine to ProxyLifecycleManager that tracksConnectionState transitions driven by DevServerMonitor events:- ServerStarted -> Connecting- toolListChanged -> Connected (resets reconnection counter)- ServerCrashed -> Reconnecting (with ResetConnectionAsync) or Degraded  after 3 failed reconnection attempts- ServerFailed -> DegradedMcpStdioServer now returns a contextual error message when tools arecalled during reconnection vs initial startup.

Cover TCS reset pattern (crash -> reset -> reconnect cycle), reconnectioncounter reset on success, max attempts leading to Degraded state,Degraded not being terminal, and HealthReport roundtrip withReconnecting/Degraded ConnectionState.

Add ASCII state diagram in ProxyLifecycleManager next to the statefields, showing all transitions with their triggering events and thetwo separate retry counters.Enrich ConnectionState.cs with detailed <remarks> block describingevent-to-state mapping, counter semantics, and per-member XML summarieson each enum value.

ServerLaunching event fires after process start, before health-check wait.Shutdown state is set in the finally block for guaranteed cleanup transition.

Configure ServerInfo with name="uno-devserver" and assembly versionso clients see a named server in the initialize response.

Remove stale ClientsWithoutListUpdateSupport blacklist. Instead, waitfor upstream tools when no cache exists (universal), return cached toolsimmediately when available. Add HasCachedTools property to ToolListManager.

Align ServerInfo and HealthReport on the same versioning pattern asCliManager.ShowBanner, using AssemblyInformationalVersionAttributeto get the SemVer version instead of the 4-part assembly version.

Cover Launching/Shutdown roundtrips in HealthReport, ServerInfoversion extraction pattern, and ServerLaunching event sequence.

Refactor RunMonitor() to use DiscoverAsync() directly instead ofResolveHostExecutableAsync(), storing the full DiscoveryInfo forhealth reporting. StartProcess() now reuses cached add-ins fromthe discovery result instead of re-calling DiscoverAsync().

Static mapper that converts DiscoveryInfo nullable fields intoValidationIssue[] for health reports. Maps GlobalJsonNotFound,UnoSdkNotInGlobalJson, SdkNotInCache, PackagesJsonNotFound,DevServerPackageNotCached, HostBinaryNotFound, DotNetNotFound.

…tion

…analyzed

CopilotAI left a comment

CopilotAI left a comment