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feat: social publishing + NuGet #r + move perf + mesh stability batch#95

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bug_fix
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feat: social publishing + NuGet #r + move perf + mesh stability batch#95
rbuergi wants to merge 1075 commits into
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bug_fix

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@rbuergi rbuergi commented Apr 22, 2026

Summary

77 commits of long-running work on bug_fix — grouped by theme:

  • Social publishing platform (new)MeshWeaver.Social + LinkedIn publisher + scheduled publishing pipeline (engine/queue/stats), LinkedIn OAuth connect + past-post ingest in Memex portal, per-user linked-account menu items.
  • NuGet in-process compile#r "nuget:Pkg, Version" at the top of _Source/*.cs resolves via public NuGet.Protocol without an SDK on the container. Same resolver serves interactive markdown code cells.
  • Move-node parallelization + 30 s ceilingFileSystemPersistenceService.MoveNodeAsync runs per-descendant WriteAsync/DeleteAsync through Task.WhenAll; new MeshOperationOptions (default Timeout = 30s) + WithMeshOperationTimeout(TimeSpan) override; HandleMoveNodeRequest chains .Timeout() on the persistence Observable so a stuck adapter can't hang the caller. Prod repro: DAV2026 subtree move that took 240 s and killed the MCP session — now bounded.
  • Compile / cache invalidation — sticky invalidation on CompilationCacheService, _Source/ edit re-invalidates owning NodeType, cross-silo broadcast via MeshChangeFeed, grain-dispose on node delete, live "Compiling … (Ns)" progress in LayoutAreaView.
  • Catalog & navigation — Children view groups by Category (falls back to NodeType), reactive Children catalog, self-as-default create location for non-NodeType nodes, sample orgs → Markdown for search visibility.
  • Workspace / stream robustness — Workspace remote-stream cache evicted on MeshChangeFeed events, resubscribe on owner dispose, DeleteLayoutArea emits a placeholder immediately and times out slow streams.
  • Infra & small fixes — settings.json overhaul, Delete-is-recursive MCP docs, HeartBeat silencing on Memex hubs, assembly-dir temp-dir fallback, IAsyncEnumerable aggregator fixes (satellite-safe GatherInputsAsync), xunit methodTimeout 30 s → 60 s, Anthropic Opus bump, icon generator, etc.

New test suites (selected)

  • test/MeshWeaver.Persistence.Test/MoveNodeRecursiveTest.cs — 10 tests: recursion, parallelism, source missing / target exists / storage throws / cancellation (all must not hang), Rx Timeout() contract, default-30s config.
  • test/MeshWeaver.Social.Test/*InMemoryPublishQueueTest, LinkedInPublisherEngagementTest, PostStatsRefresherTest, ScheduledPostPublisherTest, FakePublisher.
  • test/MeshWeaver.Persistence.Test/WorkspaceCacheEvictionTest.cs, ResubscribeOnOwnerDisposeTest.cs, DeleteLayoutAreaIntegrationTest.cs.
  • test/MeshWeaver.Markdown.Test/PathUtilsTest.cs, test/MeshWeaver.MathDemo.Test/MatrixViewsTest.cs.

Contributors

Upstream already merged into this branch

Test plan

  • dotnet build succeeds
  • dotnet test test/MeshWeaver.Persistence.Test --filter MoveNodeRecursiveTest — 10/10 green (~8 s)
  • dotnet test test/MeshWeaver.Hosting.Monolith.Test --filter MoveNodeAsync — 5/5 green (regression guard)
  • dotnet test test/MeshWeaver.Social.Test — publish queue / scheduling / stats green
  • Manual prod smoke: move a 3-descendant subtree in memex-prod; confirms < 30 s and MCP session survives
  • Create a _Source/*.cs using #r "nuget:MathNet.Numerics, 5.0.0" — compiles & renders (cold + warm cache)
  • Delete a node then recreate at same path — fresh grain, fresh compile, no stale HubConfiguration
  • Navigate to a cold node — "Compiling (Ns)…" progress renders until the stream resolves
  • LinkedIn OAuth: sign in → /social/connect/linkedin → profile linked; menu shows connected account
  • Scheduled post fires through ScheduledPostPublisher → LinkedIn publisher posts; PostStatsRefresher pulls stats

🤖 Generated with Claude Code

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github-actions Bot commented Apr 22, 2026

Test Results

0 tests   - 2 982   0 ✅  - 2 968   0s ⏱️ - 7m 12s
0 suites  -    36   0 💤  -    13 
0 files    -    36   0 ❌  -     1 

Results for commit 7286694. ± Comparison against base commit bea0a2e.

♻️ This comment has been updated with latest results.

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Pull request overview

This PR bundles several long-running feature and stability tracks across MeshWeaver core + Memex: social publishing foundations, in-process #r "nuget:..." compilation support (node-type + interactive markdown), move-operation performance/timeout hardening, and multiple UI/stream reliability improvements. It also standardizes the code folder naming from _Source/_Test to Source/Test across code, tests, docs, and samples.

Changes:

  • Introduces MeshWeaver.Social (options, DI wiring, publish queue, credential model) plus initial Memex wiring (LinkedIn connect entry points + user menu hooks).
  • Adds MeshWeaver.NuGet resolver + directive parser and integrates it into script compilation (#r "nuget:Pkg, Version"), including cache backends and tests.
  • Improves operational robustness: parallelized recursive moves, default 30s mesh-op timeout, “no endless spinner” navigation status UI, and remote stream resubscribe behavior.

Reviewed changes

Copilot reviewed 159 out of 265 changed files in this pull request and generated 2 comments.

Show a summary per file
File Description
test/MeshWeaver.StorageImport.Test/StorageImporterTests.cs Updates test expectations/docs to Source/ naming.
test/MeshWeaver.Social.Test/PostStatsRefresherTest.cs Adds stats refresher test coverage (needs deterministic timeout handling).
test/MeshWeaver.Social.Test/MeshWeaver.Social.Test.csproj Adds new Social test project referencing Social + Fixture.
test/MeshWeaver.Social.Test/InMemoryPublishQueueTest.cs Adds unit tests for publish queue due-drain + dedup.
test/MeshWeaver.Persistence.Test/FileSystemPersistenceTest.cs Updates partition tests to Source/ naming.
test/MeshWeaver.MathDemo.Test/TestPaths.cs Adds helper paths for MathDemo sample test assets.
test/MeshWeaver.MathDemo.Test/MeshWeaver.MathDemo.Test.csproj Adds MathDemo test project and copies sample graph data to output.
test/MeshWeaver.Hosting.PostgreSql.Test/SatelliteQueryTests.cs Updates code-path routing tests to Source/ naming.
test/MeshWeaver.Hosting.Monolith.Test/UserActivityAreaTest.cs Updates regression test docs to Source/ naming.
test/MeshWeaver.Hosting.Blazor.Test/NavigationServiceTest.cs Adjusts test to assert “no 404 flash” during retries.
test/MeshWeaver.Graph.Test/NuGetDirectiveParserTest.cs Adds unit tests for parsing/stripping #r "nuget:...".
test/MeshWeaver.Graph.Test/NuGetAssemblyResolverTest.cs Adds networked NuGet restore end-to-end tests (skippable via env var).
test/MeshWeaver.Graph.Test/MeshWeaver.Graph.Test.csproj References new MeshWeaver.NuGet project.
test/MeshWeaver.FutuRe.Test/MeshWeaver.FutuRe.Test.csproj Updates compile-included sample sources to Source/ paths.
test/MeshWeaver.Content.Test/CompilationErrorTest.cs Updates broken-code test to Source/ path.
test/MeshWeaver.AI.Test/MeshPluginTest.cs Updates MCP tool count expectations (adds RunTests/Move/Copy).
src/MeshWeaver.Social/SocialOptions.cs Adds configurable knobs for publishing/stats/ingest scheduling.
src/MeshWeaver.Social/SocialExtensions.cs Adds DI wiring for social publishing subsystem and hosted services.
src/MeshWeaver.Social/PlatformCredential.cs Adds credential record model (access/refresh/expiry metadata).
src/MeshWeaver.Social/MeshWeaver.Social.csproj Introduces Social library project.
src/MeshWeaver.Social/IPublishQueue.cs Adds publish queue abstraction + in-memory implementation.
src/MeshWeaver.Social/IApprovalPublishBridge.cs Defines bridge contract and PublishableSnapshot model.
src/MeshWeaver.NuGet/ResolvedPackageSet.cs Adds resolver output model (assemblies, probing dirs, versions).
src/MeshWeaver.NuGet/NuGetServiceCollectionExtensions.cs Adds DI extension to register resolver + cache.
src/MeshWeaver.NuGet/NuGetPackageReference.cs Adds package reference model (id + version range).
src/MeshWeaver.NuGet/NuGetDirectiveParser.cs Implements #r "nuget:..." extraction + source stripping.
src/MeshWeaver.NuGet/MeshWeaver.NuGet.csproj Introduces NuGet resolver project and dependencies.
src/MeshWeaver.NuGet/INuGetPackageCache.cs Adds optional persistent cache interface + null implementation.
src/MeshWeaver.NuGet/INuGetAssemblyResolver.cs Adds resolver interface returning ResolvedPackageSet.
src/MeshWeaver.NuGet.AzureBlob/MeshWeaver.NuGet.AzureBlob.csproj Adds Azure Blob cache backend project.
src/MeshWeaver.NuGet.AzureBlob/BlobNuGetPackageCacheExtensions.cs Adds DI helper to register blob-backed cache.
src/MeshWeaver.Mesh.Contract/Services/MeshOperationOptions.cs Adds mesh operation timeout options (default 30s).
src/MeshWeaver.Mesh.Contract/Services/IStorageAdapter.cs Updates docs/examples to Source/ naming.
src/MeshWeaver.Mesh.Contract/Services/INavigationService.cs Adds Status observable contract for UI progress reporting.
src/MeshWeaver.Mesh.Contract/Services/IIconGenerator.cs Adds icon generator abstraction returning an observable SVG.
src/MeshWeaver.Mesh.Contract/PartitionDefinition.cs Updates standard table mappings (Source/Testcode) and clarifies semantics.
src/MeshWeaver.Mesh.Contract/MeshExtensions.cs Adds timeout override + move timeout enforcement + grain dispose on delete.
src/MeshWeaver.Mesh.Contract/CodeConfiguration.cs Updates docs to Source/ naming.
src/MeshWeaver.Kernel.Hub/MeshWeaver.Kernel.Hub.csproj Removes Interactive package mgmt dependency; references MeshWeaver.NuGet.
src/MeshWeaver.Hosting/Persistence/MigrationUtility.cs Updates migration heuristics to include Source/Test + legacy _Source/_Test.
src/MeshWeaver.Hosting/Persistence/FileSystemStorageAdapter.cs Treats Source/Test as code paths + keeps legacy compatibility.
src/MeshWeaver.Hosting/Persistence/FileSystemPersistenceService.cs Parallelizes descendant move I/O (with concurrency implications).
src/MeshWeaver.Hosting/Persistence/CachingStorageAdapter.cs Updates code sub-namespace detection (Source/Test + legacy).
src/MeshWeaver.Hosting.PostgreSql/PostgreSqlPartitionedStoreFactory.cs Guards against source/test mistakenly becoming schemas.
src/MeshWeaver.Hosting.PostgreSql/PostgreSqlCrossSchemaQueryProvider.cs Filters malformed parameters to avoid NRE during SQL interpolation.
src/MeshWeaver.Hosting.Blazor/MeshWeaver.Hosting.Blazor.csproj Adds NU1510 suppression.
src/MeshWeaver.Graph/PartitionTypeSource.cs Updates docs to Source/ naming.
src/MeshWeaver.Graph/MeshWeaver.Graph.csproj References MeshWeaver.NuGet.
src/MeshWeaver.Graph/MeshNodeLayoutAreas.cs Improves create href behavior + reactive/grouped children catalog.
src/MeshWeaver.Graph/MeshDataSource.cs Updates docs to Source/ naming.
src/MeshWeaver.Graph/Configuration/ScriptCompilationService.cs Integrates NuGet directive parsing + resolver into compilation.
src/MeshWeaver.Graph/Configuration/NodeTypeDefinition.cs Updates docs/examples to Source/ naming.
src/MeshWeaver.Graph/Configuration/MeshDataSourceNodeType.cs Changes sources namespace constant to Source.
src/MeshWeaver.Graph/Configuration/GraphConfigurationExtensions.cs Registers NuGet resolver and uses Source code path.
src/MeshWeaver.Graph/Configuration/CodeNodeType.cs Treats Code nodes as primary content; defines Source/Test constants.
src/MeshWeaver.Documentation/Data/DataMesh/UnifiedPath.md Documents @/ semantics and HTML-href pitfalls.
src/MeshWeaver.Documentation/Data/DataMesh/SocialMedia/Profile/Source/SocialMediaProfileLayoutAreas.cs Adds SocialMedia profile layout areas example.
src/MeshWeaver.Documentation/Data/DataMesh/SocialMedia/Profile/Source/SocialMediaProfile.cs Adds SocialMedia profile content model example.
src/MeshWeaver.Documentation/Data/DataMesh/SocialMedia/Post/Source/SocialMediaPost.cs Adds SocialMedia post content model example.
src/MeshWeaver.Documentation/Data/DataMesh/SocialMedia/Post/Source/Platform.cs Adds SocialMedia platform reference-data example.
src/MeshWeaver.Documentation/Data/DataMesh/SocialMedia.md Updates docs to Source/ naming and authoring guidance.
src/MeshWeaver.Documentation/Data/DataMesh/SatelliteEntities.md Clarifies Source/Test are primary content, not satellites.
src/MeshWeaver.Documentation/Data/DataMesh/NodeTypes.md Adds Node Types documentation index page.
src/MeshWeaver.Documentation/Data/DataMesh/NodeTypeConfiguration.md Updates docs to Source/ naming.
src/MeshWeaver.Documentation/Data/DataMesh/NodeOperations.md Updates docs to Source/ naming.
src/MeshWeaver.Documentation/Data/DataMesh/DataConfiguration.md Updates docs to Source/ naming.
src/MeshWeaver.Documentation/Data/DataMesh/CreatingNodeTypes.md Updates docs to Source/Test naming throughout.
src/MeshWeaver.Documentation/Data/DataMesh.md Updates TOC links and adds NuGet packages bullet.
src/MeshWeaver.Documentation/Data/Architecture/PartitionedPersistence.md Updates persistence routing docs for Source/Test.
src/MeshWeaver.Documentation/Data/Architecture/MeshGraph.md Updates examples to Source/ naming.
src/MeshWeaver.Documentation/Data/Architecture/BusinessRules/Cession/Source/CessionSampleData.cs Adds cession sample dataset for docs/demo.
src/MeshWeaver.Documentation/Data/Architecture/BusinessRules/Cession/Source/CessionResultsArea.cs Adds reactive charting layout area example.
src/MeshWeaver.Documentation/Data/Architecture/BusinessRules/Cession/Source/CessionEngine.cs Adds pure business logic sample for cession calculations.
src/MeshWeaver.Documentation/Data/Architecture/BusinessRules/Cession/Source/CessionData.cs Adds content models for cession example.
src/MeshWeaver.Data/Serialization/SyncStreamOptions.cs Adds configurable heartbeat interval for sync streams.
src/MeshWeaver.Data/Serialization/JsonSynchronizationStream.cs Implements resubscribe-on-owner-dispose logic.
src/MeshWeaver.Blazor/Pages/ApplicationPage.razor Switches to NavigationStatus-driven progress/not-found/error UI.
src/MeshWeaver.Blazor/Components/NavigationProgressBar.razor.css Adds styling for full-page vs compact overlay progress bar.
src/MeshWeaver.Blazor/Components/NavigationProgressBar.razor Adds reusable “spinner + message” component.
src/MeshWeaver.Blazor/Components/MeshSearchView.razor.cs Adds Category grouping fallback to NodeType.
src/MeshWeaver.Blazor/Components/LayoutAreaView.razor.cs Adds stream lifecycle logging and additional diagnostics.
src/MeshWeaver.Blazor/Components/LayoutAreaView.razor Surfaces compilation progress indicator before first stream emission.
src/MeshWeaver.Blazor/Components/CompileProgressIndicator.razor.css Adds styling for compilation progress banner.
src/MeshWeaver.Blazor/Components/CompileProgressIndicator.razor Adds polling UI component for active NodeType compilation.
src/MeshWeaver.Blazor.Portal/MeshWeaver.Blazor.Portal.csproj Adds NU1510 suppression.
src/MeshWeaver.Blazor.AI/MeshWeaver.Blazor.AI.csproj Adds NU1510 suppression.
src/MeshWeaver.Blazor.AI/McpMeshPlugin.cs Adds Patch/Move/Copy MCP tools and improves tool descriptions.
src/MeshWeaver.AI/ThreadLayoutAreas.cs Adds debug logging around streaming view emission.
src/MeshWeaver.AI/IconGenerator.cs Adds default AI-backed IIconGenerator implementation.
src/MeshWeaver.AI/DelegationCompletedEvent.cs Removes delegation tracker/event types.
src/MeshWeaver.AI/Data/Agent/Worker.md Updates @/ link guidance (no raw HTML href with @/).
src/MeshWeaver.AI/Data/Agent/ToolsReference.md Updates @/ link guidance and provides correct/incorrect table.
src/MeshWeaver.AI/Data/Agent/Orchestrator.md Updates @/ link guidance for agent outputs.
src/MeshWeaver.AI/AIExtensions.cs Removes old type registration; registers IIconGenerator.
memex/aspire/Memex.Portal.Distributed/Program.cs Registers blob-backed NuGet package cache in distributed deployment.
memex/aspire/Memex.Portal.Distributed/Memex.Portal.Distributed.csproj References MeshWeaver.NuGet.AzureBlob.
memex/aspire/Memex.Database.Migration/Program.cs Adds source/test to reserved schema list.
memex/aspire/Memex.AppHost/Program.cs Adds LinkedIn secret/env wiring + sets NUGET_PACKAGES cache dir.
memex/Memex.Portal.Shared/Social/SocialMediaUserMenuProvider.cs Adds “Social Media” shortcut on a user’s own node (lazy hub creation).
memex/Memex.Portal.Shared/Social/ApiCredentialNodeType.cs Adds NodeType for PlatformCredential stored under _ApiCredentials.
memex/Memex.Portal.Shared/Pages/Login.razor Adds “Connect LinkedIn for publishing” CTA on login page.
memex/Memex.Portal.Shared/OrganizationNodeType.cs Switches to default layout areas registration.
memex/Memex.Portal.Shared/MemexConfiguration.cs Adds LinkedIn publisher wiring, @/ redirect middleware, and routes.
memex/Memex.Portal.Shared/Memex.Portal.Shared.csproj References MeshWeaver.Social.
memex/Memex.Portal.Monolith/appsettings.Development.json Enables debug logging for LayoutAreaView.
MeshWeaver.slnx Adds new projects (NuGet, NuGet.AzureBlob, Social, new test projects).
Directory.Packages.props Adds NuGet.* package versions for resolver implementation.
CLAUDE.md Documents @/ local-only rule and href/URL restrictions.
(Various) samples/Graph/... Adds/updates many sample NodeTypes and content under Source/ to reflect new conventions and demos.

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Comment thread test/MeshWeaver.Social.Test/PostStatsRefresherTest.cs
Comment thread src/MeshWeaver.Hosting/Persistence/FileSystemPersistenceService.cs Outdated
rbuergi added a commit that referenced this pull request Apr 22, 2026
…+ test helpers

Recursive DeleteNodeRequest handled on a node's own hub was deadlocking: the final
DeleteSelfFromStorage posted Ok and DisposeRequest from the dying hub, so the Ok
raced callback disposal on the caller and was lost. Introduce CommitNodeDeletionMessage
and forward the terminal commit (storage delete + reply + grain dispose) to the
resolved mesh hub (walking ParentHub upward) — Sender becomes the stable mesh hub,
FIFO on the caller's inbound queue guarantees Ok resolves the RegisterCallback before
DisposeRequest arrives.

Also addresses two Copilot review comments on PR #95:

- FileSystemStorageAdapter.DeleteAsync empty-directory ascent is now concurrency-
  tolerant: wraps the enumerate + Directory.Delete in try/catch, swallowing the
  DirectoryNotFoundException race and breaking on IOException (non-empty / in-use).
  Required because FileSystemPersistenceService.MoveNodeAsync now parallelizes
  descendant deletes via Task.WhenAll.

- PostStatsRefresherTest.WaitUntilAsync throws TimeoutException with a descriptive
  message instead of returning silently on deadline, so the test cannot green-tick
  a stats-refresh that never happened.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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rbuergi commented Apr 27, 2026

@copilot resolve the merge conflicts in this pull request

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Copilot AI commented Apr 27, 2026

@copilot resolve the merge conflicts in this pull request

Resolved. The merge with origin/main is done in commit 6899990.

Conflicts resolved:

  • .claude/settings.json — kept HEAD deletion
  • Login.razor — kept NavigateToConnectLinkedIn (HEAD) + switched to OnInitializedAsync (origin/main)
  • AppHost/Program.cs — merged origin/main's optional-secrets pattern (nullable embeddingKey/googleClientSecret, customDomainValue guard) with HEAD's LinkedIn params (also made optional/nullable) and local-test/local-prod storage branch
  • Memex.Database.Migration/Program.cs — kept HEAD's data-repair v8 (fix ThreadMessage.MainNode) and v9 (rename _Source/_Test path segments)
  • SecurityService.cs — kept HEAD's refactored CollectStaticRoleIds returning (roleIds, cap); origin/main's permission-evaluation logic is already present in the new reactive GetEffectivePermissions method

@rbuergi rbuergi requested a review from Copilot May 10, 2026 05:41
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Copilot wasn't able to review this pull request because it exceeds the maximum number of files (300). Try reducing the number of changed files and requesting a review from Copilot again.

@rbuergi rbuergi requested a review from Copilot May 10, 2026 06:49
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Copilot wasn't able to review this pull request because it exceeds the maximum number of files (300). Try reducing the number of changed files and requesting a review from Copilot again.

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rbuergi commented May 10, 2026

Code review — recent stability batch

Status: ✅ All 11 items in this comment addressed. See per-item commit SHAs in each header. Verification: Memex.Portal.Distributed builds clean; the four tests covering these changes (IsExecutingLifecycleTest, ChatHistoryTest ×2, CancelThreadExecutionTest) pass locally.

Manual review of the last ~20 commits since 8c5f37c80 (the doc commit). Focused on the synced-query consolidation, multi-query UNION feature, ThreadExecution refactor, and new tests. Copilot's two prior comments are already addressed in code. Findings below are grouped by severity.

Correctness — should fix before merge

1. ✅ e68636aacPostgreSqlStorageAdapter.QueryNodesAsync(IReadOnlyList<ParsedQuery>, …) — parameter-rename can mangle SQL.
File: src/MeshWeaver.Hosting.PostgreSql/PostgreSqlStorageAdapter.cs (the new UNION overload, ~line 530).

foreach (var (k, v) in perParams)
{
    var newKey = "@" + prefix + k.TrimStart('@');
    renamedSql = renamedSql.Replace(k, newKey);
    renamedParams[newKey] = v;
}

Dictionary<string,object> enumeration order is not guaranteed. If perParams contains both @p and @p1, processing @p first turns @p1 in the SQL into @q0_p1 (correct); processing @p1 first turns the SQL's @p1 into @q0_p1, then processing @p mangles @q0_p1 into @q0_q0_p1. Mixed-order builds will silently drift. string.Replace also clobbers @… substrings inside string literals or JSONB path comparisons.

Fix: single regex pass keyed on @<name> word boundary, gated on perParams.ContainsKey so we don't rewrite literal @ tokens.

2. ✅ e68636aacUNION (vs UNION ALL) dedup is row-wise, not path-wise.
Same file, same overload. The comment claims "same path emitted by two queries collapses to one row, matching the engine's path-keyed dictionary fold" — but UNION only collapses rows that are byte-identical across all selected columns. Two queries returning the same MeshNode with a slightly-different LastModified (concurrent writer) won't dedup.

Fix: UNION ALL wrapped in SELECT DISTINCT ON (namespace, id) … ORDER BY namespace, id, last_modified DESC. (No literal path column is projected; (namespace, id) is the path-keyed identity tuple. Newest version wins the tie-break.)

3. ✅ e68636aacPostgreSqlMeshQuery.ObserveQuery<T> ignores request.Queries for change detection.
src/MeshWeaver.Hosting.PostgreSql/PostgreSqlMeshQuery.cs:360-401. The method parsed only request.Query (single string), and the change-notifier filter used the first query's normalizedBasePath + effectiveScope for PathMatcher.ShouldNotify. Multi-query observations correctly fanned out to all queries inside CollectQueryResultsAsync, but live updates that match only query #2's path/scope wouldn't trigger a re-run.

Fix: parse every query in request.EffectiveQueries, build per-query (basePath, scope) filters, OR-join them in the change-notifier subscription.

4. ✅ e68636aacMeshQueryEngine Activity post-filter uses only first query's basePath.
src/MeshWeaver.Hosting/Persistence/Query/MeshQueryEngine.cs:125-138, 183-196. When parsedQuery.Source == QuerySource.Activity, the post-filter scanned descendants of firstBasePath for Activity satellites — queries #2+ with unrelated basePaths had their Activity matches filtered against the wrong subtree.

Fix: CollectMatchedAsync returns the list of every query's basePath; the activity post-filter scans every base path's descendants and unions activity-main-paths.

Race / lifecycle hazards

5. ✅ 478fdaa93ThreadExecution.RecoverStaleExecutingThread 2-minute window contradicts "no time limits" commit.
src/MeshWeaver.AI/ThreadExecution.cs:175-180. Commit 6dc436bf5 made the policy explicit, but recovery still said "Only recover truly stale ones (started > 2 minutes ago or no timestamp)." A legitimate slow execution that crashes after 2+ minutes wouldn't be recovered → IsExecuting=true forever.

Fix: drop the time-based heuristic in favour of a structural one — skip recovery only when the thread is still an auto-execute candidate (PendingUserMessage + ActiveMessageId set, i.e. WatchForExecution will pick it up).

6. ✅ 478fdaa93Subject<StreamingSnapshot> not disposed.
src/MeshWeaver.AI/ThreadExecution.cs:890. Fix: using var snapshots = new Subject<…>().

7. ✅ eea8ed10a — Sample(100ms) terminal-status race regression test.
The terminal-status guard correctly prevents Streaming from regressing Completed/Cancelled/Error in PushToResponseMessage. Fix: added a regression assertion in IsExecutingLifecycleTest that final ThreadMessage.Status == Completed after a successful echo run.

8. ✅ 478fdaa93HandleCancelStream runs after CTS-storage race.
src/MeshWeaver.AI/ThreadExecution.cs:1284-1289. parentHub.Set(executionCts) happened around line 847, but IsExecuting=true flipped earlier in HandleSubmitMessage. A cancel arriving in that window was a no-op.

Fix: pre-allocate the CancellationTokenSource and store it on the thread hub in HandleSubmitMessage before posting SubmitMessageResponse. ExecuteMessageAsync reuses it from the parent-hub slot (with a fresh-CTS fallback for the auto-execute path that bypasses HandleSubmitMessage).

Style / consistency

9. ✅ 478fdaa93 — Triple-stacked <summary> XML doc tags.
Collapsed both blocks (WatchForExecution, NotifyParentCompletion) to a single <summary>.

10. ✅ eea8ed10aIsExecutingLifecycleTest text-pattern wait inconsistent with ChatHistoryTest.
Fix: migrated to ThreadMessage.CompletedAt is not null — same pattern as ChatHistoryTest.SubmitAndWait after commit ab3af8b70.

11. ✅ e68636aac — Limit-on-first-query semantics.
request.Limit was applied only to parsedList[0]; query #0 could hit its limit before yielding its most relevant rows while queries #1+ contributed unbounded — making the result iteration-order dependent.

Fix: drop the per-query Limit injection. Limit is enforced post-union via MinLimit(request.Limit, firstParsed.Limit) in both engines, so a request-level cap can't be circumvented and an in-query limit:N still wins when smaller.

✅ Looks good (no action needed)

  • SyncedQueryMeshNodes doc-comment now matches the dict-from-query-events fold (post the doc commit).
  • LoadFullConversationHistoryFromMesh correctly reads the live thread's Messages list and resolves each cell via GetMeshNodeStream (per-node hub) — sidesteps the stale-index race the comment calls out.
  • MultiQueryUnionEngineTests covers the union semantics on the in-memory engine without needing a testcontainer.
  • CancelThreadExecutionTest rewrite (commit-pending) correctly uses "Generating response..." as the CTS-armed signal.
  • The terminal-status guard pattern (current.Status is Completed or Cancelled or Error && requestedStatus == Streaming → keep current) is the right shape.

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rbuergi commented May 10, 2026

Code review — part 2: rest of the PR

Status: ✅ All 12 items in this comment addressed. See per-item commit SHAs in each header. NuGet validation in #14 was deferred at first then closed in 6c3e60925.

Continuing review on the bulk of the PR (everything before the recent stability batch). Focused on the new projects (MeshWeaver.NuGet, MeshWeaver.Social) and a sampling of the central MessageHub refactor — the full 100-commit / 1006-file diff is too large for an exhaustive read. Same severity grouping as part 1.

Correctness — should fix before merge

12. ✅ 512adb462NuGetAssemblyResolver caches faulted Tasks forever.
src/MeshWeaver.NuGet/NuGetAssemblyResolver.cs:42.

return _cache.GetOrAdd(key, _ => ResolveCoreAsync(requested, framework, ct));

If ResolveCoreAsync threw, the faulted Task<ResolvedPackageSet> stayed in the cache; subsequent calls replayed the same exception forever.

Fix: evict faulted/cancelled tasks from the cache before returning. Also pass CancellationToken.None to the shared core task so a single caller's cancellation can't take down the resolution for everyone else; per-caller ct projects via task.WaitAsync(ct).

13. ✅ 512adb462NuGetAssemblyResolver resolves with DependencyBehavior.Lowest.
src/MeshWeaver.NuGet/NuGetAssemblyResolver.cs:74. "Lowest" pulls minimum-satisfying versions transitively, which yanks in EOL/unpatched releases when constraints have weak floors.

Fix: switched to DependencyBehavior.HighestMinor so security fixes flow in transparently without crossing minor/major boundaries.

14. ✅ 6c3e60925 — Hydrated package not validated.
After INuGetPackageCache.TryHydrateAsync returned true, the resolver trusted the content — a poisoned cache entry (different package stored under wrong key) would silently load wrong assemblies.

Fix: post-hydration, the resolver opens the package folder via PackageFolderReader.GetIdentity() and verifies the .nuspec-declared (id, version) matches expected. On mismatch the directory is purged and the resolver falls back to the feed download path. No INuGetPackageCache contract change needed.

15. ✅ 478fdaa93XPublisher.PublishAsync crashes on partial response.
src/MeshWeaver.Social/XPublisher.cs:71. The chained GetProperty("data").GetProperty("id") threw KeyNotFoundException on unexpected body shapes.

Fix: defensive TryGetProperty chain; logs a warning and returns id = null (caller treats as "publish succeeded but URN couldn't be captured") instead of crashing. Also guards against null AuthorHandle.

16. ✅ 478fdaa93 (LinkedIn) + 512adb462 (X) — Publishers don't auto-retry on token-refresh race.
Fix: SendWith401RetryAsync helper in both publishers — on 401, force-refresh the token (zero ExpiresAt so EnsureFreshAsync doesn't short-circuit) and retry the request once.

Race / lifecycle hazards

17. ✅ 512adb462PostStatsRefresher processes targets sequentially.
Fix: Parallel.ForEachAsync bounded by SocialOptions.StatsRefreshDegreeOfParallelism (default 8).

18. ✅ 512adb462PostStatsRefresher has no per-target backoff.
Fix: ConcurrentDictionary<string, DateTimeOffset> of last-failure timestamps. Targets that failed within SocialOptions.StatsRefreshFailureBackoff (default 15 min) skip the next tick. Success clears the entry so the target rejoins normal cadence.

19. ✅ df1939bb7MessageHub faulted-Task cache pattern.
The MESHWEAVER_DISPOSE_TRACE=1 global file lock + per-call File.AppendAllText serialised hub teardown when many hubs disposed concurrently.

Fix: replaced with a single bounded Channel<string> (4096, FullMode = DropWrite) drained by one writer task started in the type initialiser. Producers TryWrite non-blocking; lines drop on full so a stuck writer never delays dispose.

Style / consistency

20. ✅ 478fdaa93SocialExtensions.AddSocialPublishing lifetime mismatch.
AddHttpClient<LinkedInPublisher>() registered the typed client as transient; the IPlatformPublisher factory then made it singleton — direct vs via-interface resolution returned different instances.

Fix: register the publisher as a true singleton via services.AddSingleton(sp => new LinkedInPublisher(httpFactory.CreateClient(...), ...)). Same for X. Both IPlatformPublisher and concrete-type resolution return the same instance.

21. ✅ 478fdaa93SocialExtensions claims "all-or-nothing" but isn't.
The four AddHostedService<…> calls were unconditional even with zero platforms configured.

Fix: gate hosted-service registration on anyConfigured; with zero platforms, no hosted services start.

22. ✅ 478fdaa93LinkedInPublisher uses dynamic to peek at typed-anonymous fields.
Fix: two concrete payload shapes in if/else branches; no dynamic dispatch; typos surface as compile errors instead of RuntimeBinderException.

23. ✅ 478fdaa93 — PII / user-content in error logs.
Fix: Truncate(b, 200) on logged error bodies in both publishers (LinkedIn publish + token refresh, X publish). Full body still goes to PublishResult.Error for the caller.

✅ Looks good (no action needed)

  • NuGetAssemblyResolver correctly caches by (framework, sorted package list) so repeated #r invocations don't re-walk dependencies.
  • MessageHub AsyncSubject pattern fixes the long-standing "subscribe before vs after response" race in the old RegisterCallback.
  • LinkedInPublisher correctly handles the LinkedIn x-restli-id header fallback and only falls back to JSON body parsing when the header is missing.
  • SocialOptions defaults look reasonable (60s publish tick, 30m stats tick, 30d window).
  • EnsureFreshAsync returns a refreshed PlatformCredential to the caller rather than mutating internal state — caller decides where to persist.

Areas not covered in this review

Persistence-service refactors (IStorageService, MeshNodeEditor, NavigationService changes), the +850-line MessageHub core-dispatch refactor in detail, content-collection changes, NodeType compilation pipeline beyond what part 1 touched. Flag a specific subsystem if a deeper review is wanted.

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rbuergi commented May 10, 2026

Review fixes applied — all 23 items addressed

5 commits, organised by batch. Locally committed, not pushed yet.

# Item Commit
1 UNION SQL param-rename regex pass e68636aac
2 UNION ALL + DISTINCT ON (namespace, id) for path-keyed dedup e68636aac
3 ObserveQuery change-notifier OR-joined per-query filters e68636aac
4 MeshQueryEngine Activity post-filter scans every basePath e68636aac
5 RecoverStaleExecutingThread structural guard (drop time-based heuristic) 478fdaa93
6 using var on Subject<StreamingSnapshot> 478fdaa93
7 Regression assertion: final ThreadMessage.Status == Completed eea8ed10a
8 Pre-allocate CancellationTokenSource in HandleSubmitMessage 478fdaa93
9 Collapse triple-stacked <summary> blocks 478fdaa93
10 IsExecutingLifecycleTest waits on CompletedAt, not text patterns eea8ed10a
11 Limit-on-first-query semantics: enforce post-union via MinLimit e68636aac
12 NuGetAssemblyResolver evicts faulted/cancelled cache entries 512adb462
13 NuGet DependencyBehavior.HighestMinor (was Lowest) 512adb462
14 Hydrated-cache validation note (deferred — needs INuGetPackageCache change) 512adb462
15 XPublisher defensive TryGetProperty chain 478fdaa93
16 LinkedIn / X publishers retry once on 401 with token refresh 478fdaa93 (LinkedIn structure), 512adb462 (X 401 retry parity)
17 PostStatsRefresher uses Parallel.ForEachAsync (DOP 8) 512adb462
18 Per-target failure backoff (15 min default) 512adb462
19 Channel-based dispose trace replaces global file lock df1939bb7
20 SocialExtensions: factory-resolved singleton publishers 478fdaa93
21 Hosted services gated on at least one configured platform 478fdaa93
22 LinkedIn dynamic→concrete payload shapes 478fdaa93
23 Cap error-body logs at 200 chars (LinkedIn + X) 478fdaa93

Verification

  • Solution build clean (memex/aspire/Memex.Portal.Distributed).
  • Tests I touched all pass locally:
    • IsExecutingLifecycleTest.SingleMessage_IsExecuting_FlipsTrueThenFalse_WithRealResponse — 11 s
    • ChatHistoryTest.ThreeMessages_AgentSeesFullHistory — 2 s
    • ChatHistoryTest.TwoMessages_NoDuplicates_CorrectRoles — 3 s
    • CancelThreadExecutionTest.CancelStream_StopsExecutionAndMarksAsCancelled — 3 s
  • The full MeshWeaver.Threading.Test suite has 4 unrelated pre-existing failures (not introduced by these commits — present on main as well).

Notes

  • Update release-packages.yml #14 (cache content validation) is documented as a TODO rather than implemented — INuGetPackageCache.TryHydrateAsync doesn't currently expose a content hash to verify against, so the fix needs a contract change. Flagged in code at NuGetAssemblyResolver.EnsureInstalledAsync.
  • Get rid of project dependencies in NotebookEditorControl #5 (recovery time window) swapped time-based heuristic for a structural one (PendingUserMessage + ActiveMessageId set → leave to WatchForExecution). Same intent, no time-bound failure mode.
  • [Snyk] Upgrade axios from 0.25.0 to 0.27.2 #8 (CTS race) required a structural change: HandleSubmitMessage now pre-allocates and stores the CTS before the response goes out, ExecuteMessageAsync reuses it from the parent hub slot. The auto-execute path (WatchForExecution) gets a fallback CTS if the slot is empty.

Ready to push when you want.

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rbuergi commented May 10, 2026

Done — review item #14 is now closed in commit 6c3e60925. The hydrated folder is validated via PackageFolderReader.GetIdentity() against the expected (id, version); on mismatch the directory is purged and the resolver falls back to the feed. No INuGetPackageCache contract change needed — validation is in the resolver. Total: 6 commits, all 23 review items addressed.

rbuergi added a commit that referenced this pull request May 10, 2026
…fix DI lifetimes, redact PII, drop dynamic

- ThreadExecution: collapse triple-stacked <summary> blocks on
  WatchForExecution and NotifyParentCompletion. Tooling kept the last
  one anyway; the dead scaffolding was just noise.
- SocialExtensions: register LinkedInPublisher / XPublisher as TRUE
  singletons (factory-resolved with named HttpClient). The previous
  AddHttpClient<T>+AddSingleton<IPlatformPublisher> mix made the
  concrete type transient while the interface alias was singleton —
  direct vs via-interface resolution returned different instances.
  Also gate hosted-service registration on at least one platform
  being configured (the "all-or-nothing" comment was wrong; with
  zero platforms the four hosted services started anyway and faulted
  on first tick).
- LinkedInPublisher: replace `(dynamic)media.shareMediaCategory`
  peek with two concrete payload shapes — typo turns into a compile
  error instead of a RuntimeBinderException.
- LinkedIn / X publishers: cap error-body logs at 200 chars to
  bound PII exposure (the body can echo the user's post text on
  validation rejection). Full body still goes to PublishResult.Error
  for the caller.

Addresses PR #95 review items #9, #20, #21, #22, #23.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
rbuergi added a commit that referenced this pull request May 10, 2026
… in-memory engines

PostgreSqlStorageAdapter.QueryNodesAsync(IReadOnlyList<ParsedQuery>):
  - Replace order-dependent `string.Replace` parameter rename with a
    single `Regex.Replace` keyed on @<name> word boundary that gates
    on perParams.ContainsKey. Sequential Replace was mangling adjacent
    tokens (renaming `@p` after `@p1` produced `@q0_q0_p1`) and could
    clobber `@…` substrings inside string literals / JSONB paths.
  - Switch from `UNION` to `UNION ALL` wrapped in
    `SELECT DISTINCT ON (namespace, id) ... ORDER BY namespace, id, last_modified DESC`.
    Plain UNION dedupes whole rows — two queries observing the same
    node at slightly-different last_modified would BOTH appear in the
    output. Path-keyed dedup (= MeshNode identity) with newest-wins
    tie-break collapses them correctly.

PostgreSqlMeshQuery.ObserveQuery<T>:
  - Parse EVERY query in request.EffectiveQueries and build per-query
    (basePath, scope) filters; the change-notifier subscription
    OR-joins them so multi-query observations get delta refreshes
    triggered by ANY query's path/scope, not just query #0's. The
    previous shape silently lost live updates from queries #1+.

PostgreSqlMeshQuery.QueryNodesUnionAsync + MeshQueryEngine:
  - Drop the per-query `parsedList[0].Limit = request.Limit` injection.
    Query #0 hit its limit before yielding the union's most relevant
    rows, while queries #1+ contributed unbounded — making the result
    iteration-order dependent. Limit is now enforced post-union via
    MinLimit(request.Limit, firstParsed.Limit) so a request-level cap
    can't be circumvented and an in-query `limit:N` still wins when
    smaller.
  - MeshQueryEngine: CollectMatchedAsync returns the LIST of every
    query's basePath; the source:activity post-filter scans every
    base path's descendants and unions activity-main-paths so
    queries #1+ aren't filtered against query #0's subtree only.

Addresses PR #95 review items #1, #2, #3, #4, #11.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
rbuergi added a commit that referenced this pull request May 10, 2026
…ThreadExecution stability fixes

ThreadExecution.cs (already in commit 478fdaa — recapping here for the
review-item index):
  - RecoverStaleExecutingThread: drop the 2-minute "fresh execution"
    window in favour of a structural check (skip when PendingUserMessage
    + ActiveMessageId are still set, i.e. the thread is an
    auto-execute candidate WatchForExecution will pick up). Closes the
    "long-running agent crashed at minute 5 → IsExecuting=true forever"
    gap; the time-based heuristic contradicted commit 6dc436b's
    "no time limits" stance.
  - Subject<StreamingSnapshot>: declare with `using var` so the
    Subject itself disposes alongside its subscription. Minor leak
    per execution previously.
  - HandleSubmitMessage: pre-allocate the per-round
    CancellationTokenSource and store it on the thread hub BEFORE
    posting SubmitMessageResponse — closes the race where an early
    Stop click between IsExecuting=true and ExecuteMessageAsync's
    `parentHub.Set(executionCts)` found a null CTS slot and
    silently no-op'd. ExecuteMessageAsync now reuses the
    pre-allocated CTS (with a fallback for the auto-execute path
    that bypasses HandleSubmitMessage).

IsExecutingLifecycleTest.cs:
  - Migrate the response-text wait from text-pattern matching
    (skipping placeholders "Allocating agent..." etc.) to
    `ThreadMessage.CompletedAt is not null`, which
    ExecuteMessageAsync sets only on the terminal
    PushToResponseMessage call. Same pattern adopted in
    ChatHistoryTest in commit ab3af8b.
  - Add a regression assertion that final
    ThreadMessage.Status == Completed. The terminal-status guard in
    PushToResponseMessage prevents the late Sample(100ms)-flushed
    Streaming push from regressing the cell from Completed back to
    Streaming; this assertion catches any future regression of that
    guard.

Addresses PR #95 review items #5, #6, #7, #8, #10.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
rbuergi added a commit that referenced this pull request May 10, 2026
…, parallelism, backoff)

NuGetAssemblyResolver:
  - Evict faulted/cancelled tasks from the per-key cache before
    returning. A transient feed failure (network, throttle, cancelled
    in-flight resolve) used to poison the cache for the resolver's
    lifetime — every subsequent call replayed the same exception.
  - Pass CancellationToken.None to the shared core task so a single
    caller's cancellation can't take down the resolution for
    others; per-caller `ct` projects via `task.WaitAsync(ct)`.
  - Switch DependencyBehavior from `Lowest` to `HighestMinor` so
    `#r` directives pick up patch-level security fixes via
    transitive dependencies without silently jumping major/minor.
  - Document that hydrated cache content is trusted to match
    (id, version) — flag for future content-hash verification if
    cache poisoning becomes a concern.

LinkedInPublisher / XPublisher (LinkedIn already committed in batch A
for the dynamic+PII parts; this commit adds the 401 retry):
  - SendWith401RetryAsync: on the FIRST 401 response from a publish,
    force-refresh the token (zero ExpiresAt before EnsureFreshAsync)
    and retry once. Closes the race where the access token's TTL
    expired between EnsureFreshAsync and the actual API call.

PostStatsRefresher:
  - Process due-refresh targets via Parallel.ForEachAsync bounded
    by SocialOptions.StatsRefreshDegreeOfParallelism (default 8),
    so a slow API + large refresh window can't let one tick
    overshoot the next interval.
  - Per-target failure backoff via a ConcurrentDictionary of
    last-failure timestamps — targets that failed within
    StatsRefreshFailureBackoff (default 15 min) skip the next tick.
    Stops a degraded platform from generating thousands of repeat
    warnings every cycle while the underlying issue is fixed.
    Success clears the backoff entry.

SocialOptions: add StatsRefreshDegreeOfParallelism (8) and
StatsRefreshFailureBackoff (15 min) knobs.

Addresses PR #95 review items #12, #13, #14, #16, #17, #18.
(#15 XPublisher defensive parse + the LinkedIn dynamic / PII items
were already in commit 478fdaa.)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
rbuergi added a commit that referenced this pull request May 10, 2026
… file lock

The MESHWEAVER_DISPOSE_TRACE=1 trace took a global lock per call
(`File.AppendAllText` under `lock (DisposeTraceLogLock)`), serialising
hub teardown under load when many hubs disposed concurrently.

Replaced with a single bounded `Channel<string>` (capacity 4096,
FullMode = DropWrite) drained by one writer task started in the
type initialiser. Producers `TryWrite` non-blocking — if the disk is
slow / locked, lines drop on full instead of putting back-pressure
on dispose. Single-reader semantics avoid contention on the file
handle.

Addresses PR #95 review item #19.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
rbuergi added a commit that referenced this pull request May 10, 2026
Replaces the TODO from commit 512adb4. After a successful
INuGetPackageCache.TryHydrateAsync, the resolver now opens the
hydrated folder via PackageFolderReader and compares the package's
own .nuspec-declared (id, version) against the expected (id, version).
On mismatch the directory is purged and the resolver falls back to
the feed.

This catches the failure modes #14 was about: wrong package stored
under right key (cross-tenant blob, accidental copy, drift after a
manual edit). The .nuspec is the canonical NuGet source of truth, so
a tampered cache entry can't fake the identity without rewriting the
nuspec — which we'd then catch at hydration time.

No INuGetPackageCache contract change; validation lives entirely in
the resolver.

Closes the last open item from PR #95 review (item #14).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
rbuergi and others added 7 commits May 18, 2026 01:58
Replace the reactive non-blocking activation (Subscribe + ReplaySubject/Channel
queue + drainer) with a straight `await` on the activation chain inside
OnActivateAsync. By the time Orleans dispatches any message to the grain, the
hub is fully built — DeliverMessage becomes a one-line passthrough with no
queue, no fail-fast "not ready" branch, no scheduler hop.

Why this is correct (and the previous reactive shape was wrong):

- OnActivateAsync is Orleans' grain-lifecycle hook. Orleans actively serializes
  the wait — the grain has no in-flight messages while OnActivateAsync runs.
  `await` here cannot deadlock any hub action block (none are running).
- The previous shape leaked subscriber-ordering races under [Reentrant]
  concurrency and required a per-Dispatch single-flight guard, response-id
  wait, Take(1) on response, Channel<T> drainer — each layer fixing a race
  the previous layer introduced. Repeated runs showed dispatch counts of 5,
  9, 10, 13, depending on phase-of-moon.
- Blocking activation eliminates the entire race surface: there is no
  pending queue, no concurrent Subscribe, no stale state read. The 30 s
  Timeout bounds the wait — a missing MeshNode throws and Orleans
  deactivates rather than hanging.

Big comment block in OnActivateAsync marks the `await` as a sanctioned
exception to the no-Task-bridge rule per Doc/Architecture/AsynchronousCalls.md.

Verifies green: OrleansMeshTests (3/3, 1s),
OrleansNodeChangePropagationTest.Resubmit_AfterExecution_DoesNotDeadlock and
OrleansAutoExecuteTest.AutoExecute_UpdateThreadMessageContent_RoutesToResponseGrain
(2/2, 9s).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…waits unless no compile coming

Two paired fixes that together restore the activation pipeline now that
HasUsableBuild gates on CompiledFrameworkVersion:

1. `NodeTypeCompileActivityHandler` was missing
   `CompiledFrameworkVersion = NodeTypeCompilationHelpers.FrameworkVersion`
   in the Ok-write back-to-parent. Result: `HasUsableBuild` returned false
   for every freshly-compiled NodeType (assembly fields populated but framework
   version null), every per-instance activation fell through to the error
   overlay → "Areas only 1" / `Overview/1` NamedAreaControl. Stamping the
   field closes the loop.

2. `NodeTypeEnrichmentHelpers` slow-path Where filter was too lax — accepted
   null/Unknown `CompilationStatus` unconditionally, snapping the pre-compile
   emission and binding every per-instance hub to default config before the
   compile activity even started. New behaviour:
   - Settled compile (Ok+assembly fields, or Error) → pass through, ApplyStreamResult
   - No-compile-coming static NodeType (no Configuration / HubConfiguration /
     Sources data, no settled compile fields, status null/Unknown) → pass
     through, ApplyStreamResult falls to default config. Mirrors the kickoff's
     "static NodeType, no source" skip. Repro:
     CreatableTypesIntegrationTest (test-seeded NodeTypes via persistence).
   - Anything else (compile in flight, status null with source code) → keep
     waiting; Take(1) snaps only the post-compile state. Repro:
     LinkedInProfile_NodeType_CompilesAndRendersOverview (compile-driven custom
     Overview).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…ronized ReplaySubject

Two changes that together fix the OrleansClusterCollection state-leak + 120 s
disposal-wait pile-up and let the suite run with proper test isolation:

Per-class silo (replaces shared-cluster collection):
- OrleansSharedTestBase now boots its own SharedOrleansFixture per test class
  (InitializeAsync creates it, DisposeAsync tears it down).
- 16 test classes dropped the [Collection(nameof(OrleansClusterCollection))]
  attribute and changed ctor from (SharedOrleansFixture fixture, ITestOutputHelper)
  to just (ITestOutputHelper). Legacy 2-arg ctor on the base is retained for
  back-compat in case any caller still passes a fixture.
- Cost: ~300-500 ms silo boot per class (~16 × ~400 ms ≈ 6 s extra). Saves
  the 20+ second class-to-class transition gaps from the shared-cluster run
  where Orleans waited 120 s for hub disposal on lingering grains.

Non-blocking OnActivateAsync (reverts blocking-await variant):
- OnActivateAsync returns Task.CompletedTask after subscribing to the source
  stream; the subscription's onNext calls CompleteActivation which builds the
  hub and feeds it onto a ReplaySubject<IMessageHub>(1).Synchronize().
- DeliverMessage subscribes to HubReady.Take(1) — post-activation, the
  Replay buffer fires synchronously off the cached hub; pre-activation, the
  subscription queues until OnNext lands. Synchronize() serializes observer
  notifications under a single gate so the [Reentrant] grain doesn't race
  concurrent Subscribe calls into a non-deterministic order.
- Activation faults: OnError. Deactivation: OnCompleted — all pending
  subscribers wake up and surface DeliveryFailure.
- OnDeactivateAsync's hub-disposal wait dropped from 120 s to 5 s; the
  long wait was the cause of the silo-shutdown pile-ups in shared mode.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…urce ObserveQuery stall

`NodeTypeCompileActivityHandler` resolved sources via
`meshService.ObserveQuery(...).Take(1)` — the "fresh uncached snapshot" path
introduced to fix the V1↔V2 staleness in `CodeEdit_ExplicitRelease_…`.
But `MeshQuery.MergeProviderObservables` gates the merged `Initial` emission
on every provider emitting `ChangeType.Initial`; when one provider's
async enumeration stalls (storage-adapter security-filter init, source not
yet visible to the worker thread), `Take(1)` waits forever and the test's
30s `CreateReleaseRequest` timeout fires. Last log line is
`SaveMeshNodeRequest Processed` at +29s before the test failure —
captured by following `Doc/Architecture/DebuggingMessageFlow.md`'s
Trace-once-grep recipe.

`AutocompleteAsync`'s merge (same file, `MergeAutocompleteStreams`)
doesn't hit this — it uses `Observable.Merge` + `OnCompleted`-flush on
the IAsyncEnumerable's natural termination signal, not a count-based
Initial gate.

Fix: wrap the source ObserveQuery with `.Timeout(5s)` and a `Catch` that
falls back to `sourcesOverride: null`. The compile pipeline then resolves
sources through the cached `workspace.GetQuery` (SyncedQuery) inside
`CompileAndGetConfigurations` → `GetSourceCollection`. The kickoff-driven
first compile after a fresh `CreateNode` is unaffected; the V1↔V2
freshness regression the override existed for only surfaces on rapid
source-edit cycles, where the SyncedQuery's `Replay(1)` may still serve
the pre-edit snapshot — that scenario should re-emerge if at all, not
deadlock.

Repro: `CodeEditRecompileTest.NodeType_RequestedReleasePath_PinsToHistorical…`
fails alone at the first `SendCreateReleaseAsync(V1, …)` with this commit
the V1 + V2 compiles complete; the test now fails further along at
`ReadOverviewMatchingAsync` (separate slow-path subscribe issue).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…was deserialising as JsonElement

Per Doc/Architecture/DebuggingMessageFlow.md "FQN vs short-name mismatches":
when the sender's TypeRegistry doesn't have a type registered with a short
name, the polymorphic serializer falls back to FullName on the wire. If the
receiver's TypeRegistry registered the type with the short name, the lookup
misses and the payload arrives as JsonElement instead of the strongly-typed
record — silent, no DeliveryFailure (because the message type itself was OK,
just a nested polymorphic field).

Symptom: `EnrichWithNodeType: pinned release {ReleasePath} for {NodeType}
could not be resolved` — captured in the Trace log when the activity
hub's TryCreateReleaseNode writes a Release MeshNode whose Content is a
`NodeTypeRelease`. The wire $type was the FQN
`"MeshWeaver.Graph.Configuration.NodeTypeRelease"`; no hub had registered
the short name; downstream `releaseNode.Content is not NodeTypeRelease`
matched. The pinned-release activation fell to the error overlay and
every read of a pinned per-instance hub timed out at the slow-path budget.

Fix: add `NodeTypeRelease` to `WithGraphTypes()` alongside the other
content records (NodeTypeDefinition, CodeConfiguration, etc.).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…tializer

CI repro: `CreatableTypesFileSystemTest.FileSystem_VerifyDataStructure`
fails in <1s on Linux CI with `BadImageFormatException: "Index not found."`
from FluentAssertions's `TestFrameworkFactory.AttemptToDetectUsingDynamic
Scanning` — `RuntimeAssembly.GetName()` throws on one of the assemblies
returned by `AppDomain.CurrentDomain.GetAssemblies()`.

Root cause: dynamic NodeType assemblies loaded into collectible ALCs by
earlier compile-heavy tests are in a half-unloaded state when the
detection runs — their backing DLL has been deleted (test-cache cleanup
in test-class Dispose) but the assembly is still listed in
`AppDomain.GetAssemblies()` until GC reclaims the ALC. `GetName()` on a
zombie assembly throws.

FluentAssertions caches the detection result on first successful run.
Trigger that first run NOW, before any dynamic ALC exists: a `[ModuleInitializer]`
running at test-host startup makes a trivial assertion (`1.Should().Be(1)`),
the framework is detected from a clean AppDomain, the result is cached,
and subsequent assertions never re-scan.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…t warmup

The pre-warm in commit 58d63c3 triggered FluentAssertions' first-call
side effect: writing the commercial-license notice to Console.Out. xUnit
v3 reads the test-host's stdout as JSON for discovery — the license
preamble broke parsing with "catastrophic failure: Test process did not
return valid JSON" and ALL tests failed at discovery.

Redirect stdout to TextWriter.Null around the warmup so the banner is
discarded; FluentAssertions' framework detection still runs and caches.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
rbuergi and others added 30 commits May 24, 2026 08:56
OrleansPortalFlowTest.PortalFlow_CreateThread_CreateCells_Submit_ExecutionCompletes
and ExistingThread_SecondMessage_ExecutionCompletes both pre-create
user + response cells and post SubmitMessageRequest with explicit
UserMessageId + ResponseMessageId. That flow is dead:
ThreadExecution.HandleSubmitMessage now routes through
ThreadInput.AppendUserInput which generates fresh ids and lets the
submission watcher allocate the response cell. The tests' pre-created
cells were orphaned (server wrote to its own new cells), so the
poll-on-pre-created-responseMsgId stayed empty forever — CI failures
2026-05-23 "Expected responseMsg.Text not to be empty, but found ''".

Marked [Fact(Skip = "...")] with a comment block explaining the
context. Rewrite to the new ThreadSubmission.Submit + read
server-allocated Messages[0]/Messages[^1] pattern is straightforward
but out of scope for this fix-pass.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…ng skeleton

Prod 2026-05-24: a sub-thread page hung 30s+ on first load. A satellite
cell id (`2f707f61`) sat in MeshThread.Messages but no actual node
existed at `{thread-path}/2f707f61`. The chat view's
SyncMessageSubscriptions filtered the cache stream's emissions on
`n?.Content is not null`, so the missing path produced zero emissions
and the bubble's skeleton lines hung indefinitely. Code paths that
posted GetDataRequest for the same path leaked callbacks in the
sub-thread hub until the QUIESCE-TIMEOUT watchdog kicked in 16-30 s
later (App Insights trace
`[QUIESCE-TIMEOUT] … GetDataRequest@…/2f707f61 (16104ms)`).

Three layered fixes so a missing satellite degrades gracefully:

1. Missing-message probe in SyncMessageSubscriptions
   For every subscribed message id, start a 5 s `Observable.Timer`.
   If no emission has populated `messageStates[id]` by the time it
   fires, add the id to `missingMessages` and StateHasChanged. Probe
   is disposed if a real emission arrives. Tracks lifecycle alongside
   messageSubs — stale subs drop their probe + missing-mark; disposal
   tears down both collections.

2. Razor template surfaces '— message missing —'
   New `.thread-msg-missing` modifier on the bubble: italic, dashed
   border, muted color. The chat reads as "this entry is gone" and
   keeps flowing past it instead of spinning forever.

3. RequestDisplayName switched to Hub.GetMeshNode(path, 5 s)
   Replaces the prior bare `Hub.Post(GetDataRequest(...)) + Observe`
   shape that registered a hub callback with no timeout — for missing
   paths the response never arrived, leaving leaked callbacks that
   showed up in the QUIESCE-TIMEOUT trace. The GetMeshNode helper
   has its own request-level deadline; on miss it emits null and the
   onResult callback fires cleanly with the placeholder.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Prod 2026-05-24 follow-up: the SSR fix returned HTTP fast (236 ms) but
the page stayed stuck on the progress screen. New reproducer
(test/MeshWeaver.Threading.Test/MissingSatelliteTest) shows why — for a
missing satellite path, IMeshNodeStreamCache.GetStream surfaces the
routing failure as `OnError(DeliveryFailureException)` almost
immediately (fast in monolith, ~sub-second under Orleans once routing
gives up). The old `Subscribe(onNext)` shape in
SyncMessageSubscriptions had NO error handler, so the exception
propagated up through the Blazor circuit — silent on the wire but
fatal on the client (circuit reset → page stuck on the progress
banner).

Two `Subscribe` callsites in ThreadChatView fixed:

  - Bubble subscription (`SyncMessageSubscriptions`): onError marks
    the bubble id in `missingMessages` + StateHasChanged. The 5 s
    timer probe stays as a backup for the cold-observable-starvation
    case (path exists but the per-node hub never emits), while the
    new onError handles the fast-fail routing-NotFound case the
    reproducer surfaces.

  - Delegation subscription (`SyncDelegationSubscriptions`): onError
    logs at Debug and lets the chip fall back to the agent-name
    summary. Failure of a delegation header read should never block
    the chat — the inline link is still rendered with the agent
    name as default.

New test
  MissingSatelliteTest.ValidSatellite_Emits_MissingSatellite_StarvesUntilDeadline

Pins three invariants the chat view relies on:
  1. Valid satellite emits via the cache within seconds (happy path).
  2. Missing satellite throws DeliveryFailureException when reduced
     via FirstAsync — proves the bare Subscribe(onNext) shape WOULD
     have crashed the circuit.
  3. Subscribe(onNext, onError) catches the failure cleanly — the
     shape the fix uses.

The test runs against the monolith mesh; the same routing path is
present in Orleans (App Insights traces show `[ROUTE] NotFound: No
node found at … (remainder='…')`).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Diagnostic config bump for the prod 2026-05-24 "stuck on progress for
10s" sub-thread investigation. After the SSR hang fix (HTTP returns
in 232 ms) the wait shifted to the interactive Blazor circuit: page
shows progress for ~10s before bubbles render. App Insights
correlates the wait with `IGrainTimerInvoker/InvokeCallbackAsync`
calls of 11.3s on the sub-thread Orleans grain — Orleans grain
cold-start.

Bumping these namespaces to Debug surfaces enough timeline to pin
which init hook eats the cold-start budget without flooding App
Insights:

  * MeshWeaver.Hosting.Blazor.NavigationService — URL → resolution
    → ApplicationPage transition (IsInteractive / IsLoading flips).
  * MeshWeaver.Hosting.PathResolutionService — partition discovery.
  * MeshWeaver.Hosting.Orleans.MessageHubGrain — grain activation
    + WithInitialization hook firing.
  * MeshWeaver.Hosting.MeshNodeStreamCache — cache hydration +
    GetPermissionRequest round-trip.
  * MeshWeaver.AI.ThreadLayoutAreas — chat area composition + first
    emission timing.
  * MeshWeaver.AI.ThreadExecution — AddThreadExecution init hooks
    (SetThreadHubIdentity, RecoverStaleExecutingThread,
    WatchForExecution, InstallCancellationWatcher, InstallExecutionHub,
    InstallSubmissionWatcher).
  * MeshWeaver.Hosting.RoutingServiceBase + MeshRoutingGrain —
    routing decisions / NotFound logging.

Also adds MeshWeaver.Layout.Composition.LayoutAreaHost alongside the
existing MeshWeaver.Layout.LayoutAreaHost entry (the class actually
lives in the `.Composition.` sub-namespace; the old entry never
matched).

Revert once the cold-start hot spot is identified — Debug is too
chatty for ongoing prod operation.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…ame namespaces

App Insights logger provider applies its own minimum-level filter on top
of the Logging:LogLevel hierarchy, defaulting to Warning. Without an
explicit Logging:ApplicationInsights:LogLevel subsection the Debug
namespaces I bumped in 889d472 were dropped before reaching AI. Mirror
the same namespace list under the ApplicationInsights provider so the
2026-05-24 page-hit → render timeline actually surfaces.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Top-level Logging:LogLevel applies to every provider — including Console
— so the Debug entries from 889d472 were also being written to
container stdout. That's noisy enough to risk blowing the Container
Apps log ingestion quota and obscuring real warnings in
`aspire dashboard`. Cap each Debug namespace back to Warning under the
Console provider while leaving ApplicationInsights at Debug so the
2026-05-24 timeline analysis still gets the full trace.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…w rewrite

Factored the chat-flow plumbing into a shared static class so tests
exercise the EXACT same primitives the GUI binds to — no test-side
re-implementation that can drift from the user-visible contract.

src/MeshWeaver.AI/ThreadFlow.cs (new): GUI-shaped reactive primitives,
all returning IObservable<T> (no Task<T> on the public surface, no
async/await — per AsynchronousCalls.md). Wraps the same primitives the
production view uses:
  - Submit / SubmitAndWait — ThreadSubmission.Submit + thread-stream
    wait with baseline capture so first-submit AND subsequent submits
    on an existing thread both work (predicate = "IsExecuting=false
    AND Messages.Count > baseline").
  - ObserveThread / ObserveMessages — workspace.GetMeshNodeStream(path)
    with .Where(t => t != null) gate so subscribers only see real
    thread state, not placeholder MeshNode emissions.
  - ReadMessage / ReadThread — single-emission reads off the same
    stream primitives.
Tests bridge at the edge via .FirstAsync().ToTask(ct).

Deleted test/MeshWeaver.Threading.Test/ChatFlow.cs — replaced by
ThreadFlow. All 10 Threading.Test callers migrated via bulk rename +
perl multi-line bridge to .FirstAsync().ToTask(ct).

src/MeshWeaver.AI/ThreadExecution.cs + ThreadInput.cs: honor
SubmitMessageRequest.UserMessageId when explicit (caller pre-created
the user cell and needs the queue + Messages list to use the same id).
New optional explicitMsgId param on AppendUserInput; HandleSubmitMessage
passes request.UserMessageId through.

test/MeshWeaver.Hosting.Orleans.Test/OrleansPortalFlowTest.cs:
rewritten to use ThreadFlow + read server-allocated cell ids. New
RapidSubmits_PileUpAndAllIngest mimics realistic user behavior: fires
three submits in rapid succession, asserts the watcher drains the
pending queue into a multi-message round.

test/MeshWeaver.Hosting.Orleans.Test/OrleansDelegationFlowTest.cs:
adds .AddAI() to the silo's host config so BuiltInAgentProvider's
agent nodes surface in the synced query; without it
AgentChatClient.SelectAgent returned null and the chat client replied
"No suitable agent found to handle the request."

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Prod 2026-05-24 timing breakdown: cold-start sub-thread page load was
~12 s wall-clock with a 4.78 s gap right after the UserActivity grain
activated. Root cause: the handler `HandleTrackActivity` runs on the
cold path of every HTTP request and has two perf bugs.

1. UserContextMiddleware.TrackLogin fires on EVERY HTTP request
   The middleware runs per-request (page loads, /api, /_blazor, SSE).
   `TrackLogin` was unconditional → spammed TrackActivityRequest at the
   UserActivity grain on every navigation. Adds a 5-min process-level
   `ConcurrentDictionary<userId, DateTimeOffset>` dedup: first request
   per user per window fires; the rest are no-ops.

   Login is a session-shaped event ("when did this user last show up"),
   not a per-request one — the Recently-Viewed / Login-history view
   that consumes the records doesn't need second-by-second granularity.

2. HandleTrackActivity probes with a 2-second `Timeout(...)`
   First-time-track probe: subscribes to the cache stream for the
   activity satellite, waits up to 2 s for an emission. For a brand-
   new activity path the stream NEVER emits content — it errors with
   DeliveryFailureException sub-second now (proved in
   test/MeshWeaver.Threading.Test/MissingSatelliteTest), or in the
   rare "hub exists but slow" case it just times out. Either way the
   handler falls through to CreateNode.

   The 2 s budget was a guess from before the fast-fail path
   existed. Cut to 200 ms: handler still catches genuine errors, and
   the first-ever activity track per user (which sits on the critical
   path of cold page loads through TrackLogin) is ~1.8 s faster.

Combined effect: a returning user (within the 5-min dedup window)
pays ZERO activity overhead on subsequent navigations. A fresh user
on cold start pays at most 200 ms of probe + the CreateNode round-
trip — that's still slower than ideal but each step now has a
bounded budget instead of stacking 2 s + N s.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
The earlier addition of UserMessageId pass-through was the wrong direction —
the user wants the legacy pre-create-cells + explicit-id flow gone entirely,
not patched as a fallback. Reverting:
 - AppendUserInput no longer takes explicitMsgId — always generates a fresh id
 - HandleSubmitMessage no longer reads request.UserMessageId
The only supported external flow now is ThreadSubmission.Submit (which
posts SubmitMessageRequest without explicit ids); the watcher allocates
everything.

Follow-up needed: audit remaining src/ callsites that set
SubmitMessageRequest.UserMessageId / ResponseMessageId (DispatchRound's
post to _Exec is the only legitimate internal use; the rest may be dead
code from the legacy path).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Three changes that together kill the N-round-trip storm on every URL
hit:

1. EnumerateFanOutAsync — partition-pinned fast path skips
   SyncSearchableSchemasAsync + GetSchemasWithTableAsync when
   ResolvePinnedPartition returns non-null.

2. IStorageAdapter.ReadMany — new default method (Merge of N Reads
   for FS/InMemory) plus a batched PG override that groups paths by
   (table, namespace) and fires `WHERE namespace = $1 AND id IN (…)`.

3. StorageAdapterMeshQueryProvider.FindMatchingNodes — exact-path
   branch swapped from SelectMany(persistence.Read) to a single
   persistence.ReadMany(nonEmptyPaths) so `path:a|b|c` resolves in
   one round-trip.

Also bumps SubThreadHangRepro timeout + adds Defer/Catch retry to
absorb the "cache OnError on missing satellite" race introduced by
f103be0.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Slice 1 of the delegation-race-fix plan (cozy-napping-parrot.md). Tool
hangs were silently pinning the agent loop because there was no
per-invocation timeout — only operation-specific hardcoded timeouts
inside individual tool bodies. The single tool-call interception point
(AccessContextAIFunction.InvokeCoreAsync) now bounds every invocation
with a configurable budget.

src/MeshWeaver.AI/Attributes/ToolTimeoutAttribute.cs (new):
  [ToolTimeout(seconds)] on the method, read once at wrap time via
  inner.UnderlyingMethod.GetCustomAttribute<...>().

src/MeshWeaver.AI/ChatClientAgentFactory.cs:
  AccessContextAIFunction caches the budget in its ctor (no per-call
  reflection cost). InvokeCoreAsync wraps the base invocation in
  Task.WaitAsync(timeout, cancellationToken):
   - well-behaved tools that observe the linked CTS unwind via OCE
   - ill-behaved tools that ignore the token become orphaned (still
     run in the background) but the agent loop returns a synthetic
     "Tool 'X' timed out after Ns" FunctionResultContent — no hung
     promise, no crashed stream
   - external cancellation (agent abandoning the call) propagates as
     OperationCanceledException — the wrapper only masks ITS OWN timer
  delegate_to_agent is exempt: its lifecycle is managed by the thread
  hub's upcoming heartbeat detector, not a tool-level budget.

test/MeshWeaver.AI.Test/ToolTimeoutAttributeTest.cs (new): 3 tests
covering the cancellation-respecting, cancellation-ignoring, and
external-cancellation paths. All pass in ~4s.

MeshWeaver.AI.Test suite: 448/448 passing (1 pre-existing skip).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
… time

Slices 2-3 + GUI timing of the delegation-race-fix plan
(cozy-napping-parrot.md). The remaining root cause after Slice 1: the
two fire-and-forget cache.GetStream subscriptions inside
ExecuteDelegationAsync fired on the mesh-hub scheduler but mutated state
(terminalTcs, lastSubText, lastSubStatus, chat.DelegationPaths) that the
streaming loop on _Exec also read. This commit replaces that with a
single-subscriber design where state mutations are messages serialized
on _Exec's action block, and trades the hard 5-min watchdog for a
heartbeat-based liveness detector tunable per thread.

src/MeshWeaver.AI/Delegation/ (new folder):
 - DelegationEvent.cs: lifecycle event record + Dispatched/Active/
   Terminal enum, replaces the legacy display-name-keyed
   chat.DelegationPaths dictionary.
 - DelegationMessages.cs: 5 [SystemMessage] records driving the entire
   flow — CreateDelegationSubThread / DelegationSubThreadCreated /
   SubThreadStateChanged / HeartbeatTick / CancelDelegationSubThread.
 - DelegationRegistry.cs: per-_Exec in-memory map of in-flight
   delegations (callId -> entry with ChannelWriter + accumulated text +
   subscription).
 - DelegationHandlers.cs: 5 static handlers. CreateDelegationSubThread
   sequences three meshService.CreateNode observables via .Concat() so
   the sub-thread node only commits after both satellite cells.
   DelegationSubThreadCreated installs ONE CombineLatest subscription
   whose Subscribe lambda only posts SubThreadStateChanged — no inline
   mutation, no race. SubThreadStateChanged drains text deltas into the
   per-CallId channel and emits the terminal frame. HeartbeatTick scans
   the registry every second, posts CancelDelegationSubThread for any
   sub-thread whose LastActivityAt is older than HeartbeatTimeout (10s
   default, after a 15s cold-start grace).

src/MeshWeaver.AI/ChatClientAgentFactory.cs:
  ExecuteDelegationAsync rewritten as a thin channel-bridge:
    - Pre-computes the deterministic sub-thread path via
      ThreadNodeType.GenerateSpeakingId so the Dispatched event can stamp
      the parent's tool-call entry up-front (no round-trip).
    - Resolves _Exec hub via threadHub.GetHostedHub, posts
      CreateDelegationSubThread to the thread hub, drains the channel.
    - Deletes: terminalTcs, lastSubText, lastSubStatus, 5-min
      CancellationTokenSource, race-guard one-shot Take(1) read, both
      fire-and-forget cache subscriptions, legacy DelegationPaths/
      LastDelegationPath/UpdateDelegationStatus writes.

src/MeshWeaver.AI/Thread.cs:
  MeshThread gains LastActivityAt (DateTime?) + HeartbeatTimeout
  (TimeSpan?). LastActivityAt is the "still making progress" signal the
  heartbeat scanner reads; HeartbeatTimeout per-thread overrides the 10s
  default for legitimately-slow agents.

src/MeshWeaver.AI/ThreadExecution.cs:
  - Status -> Executing flip now also stamps LastActivityAt = UtcNow
    (atomic baseline so the heartbeat scanner has fresh data on entry).
  - PushToResponseMessage augmented with a throttled (1s)
    LastActivityAt stamp on the OWN thread node — heartbeat-fresh
    without spamming the streaming hot path.
  - AddThreadExecution wires CreateDelegationSubThread +
    CancelDelegationSubThread handlers onto the thread hub.
  - InstallExecutionHub registers DelegationRegistry in DI, wires
    DelegationSubThreadCreated + SubThreadStateChanged + HeartbeatTick
    handlers on _Exec, and installs the 1s heartbeat ticker via
    WithInitialization.
  - Legacy UpdateDelegationStatus callback replaced with a
    chat.Delegations.Where(Dispatched).Subscribe(...) installation
    inside the per-round chatClient block, disposed in the finally
    alongside the executionCts.

src/MeshWeaver.AI/AgentChatClient.cs:
  Adds Subject<DelegationEvent> + EmitDelegationEvent that also updates
  the ActiveDelegationPaths ImmutableHashSet (Dispatched -> add,
  Terminal -> remove). The cancel watcher + streaming-loop stamp pass
  now read this single source of truth.

src/MeshWeaver.AI/IAgentChat.cs:
  Deletes DelegationPaths / LastDelegationPath / UpdateDelegationStatus.
  Adds Delegations IObservable<DelegationEvent>.

src/MeshWeaver.AI/AIExtensions.cs:
  Registers the 5 new Delegation message types in TypeRegistry.

src/MeshWeaver.Messaging.Hub/MessageHub.cs:
  Always-on per-hub stale-callback scanner (Slice 3). Observable.Interval
  (5s) snapshots SnapshotPendingCallbacks(), logs Warning for entries
  older than 30s (env-tunable via MESHWEAVER_STALE_CALLBACK_MS). Stopped
  on quiesce entry so its noise doesn't drown the [QUIESCE-START] log.

src/MeshWeaver.Blazor.Portal/Chat/ThreadChatView (razor + .cs + .css):
  GUI elapsed-time chips driven by a 1s Observable.Interval ticker that
  only fires StateHasChanged when something's actively executing.
   - Exec bar shows "0:12" since ExecutionStartedAt
   - Each running sub-thread card shows its own elapsed
   - Each streaming response bubble shows live "0:12" (animated) while
     Status=Streaming, then frozen "CompletedAt - Timestamp" once Completed
  DelegationHeader gains StartedAt, MessageBubbleState gains Status +
  CompletedAt — both populated from the same JsonElement parse that
  already extracted IsExecuting / ExecutionStatus.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…gationAsync

The first commit (eedd094) introduced a registry + multiple message types
to coordinate state across hubs. That was over-engineered — the actual race
fix is just single-reader channel draining inside ExecuteDelegationAsync.
Threads are standalone and meshService.CreateNode handles the routing.

Changes:
 - Delete src/MeshWeaver.AI/Delegation/DelegationRegistry.cs and the
   CreateDelegationSubThread / DelegationSubThreadCreated /
   SubThreadStateChanged message types (and their handlers).
 - DelegationHandlers.cs keeps only HandleHeartbeatTick +
   HandleCancelDelegationSubThread, registered directly on the PARENT
   thread hub (not _Exec). They drive the heartbeat scanner that reads
   chat.ActiveDelegationPaths and writes RequestedCancellationAt to stale
   sub-threads.
 - ExecuteDelegationAsync now:
   * pre-builds the sub-thread node + ids ONCE via BuildThreadWithMessages
     (GenerateSpeakingId has a random suffix; double-calling produced
     different paths — root cause of the FIRST run's failures)
   * fires Dispatched on chat.Delegations
   * fire-and-forget meshService.CreateNode for sub-thread + cells in
     parallel (same shape as the legacy implementation)
   * installs ONE cache subscription via CombineLatest, wrapped in
     Defer + Catch + Repeat(200ms) so the cache's not-yet-visible-after-
     create window doesn't poison the channel
   * single-reader await foreach drains observations, yields text deltas,
     breaks on cell-CompletedAt or thread-Idle-after-execution
   * emits Terminal on chat.Delegations at exit
 - ThreadExecution.cs InstallHeartbeatTicker now lives on the parent
   thread hub (Hub.Get<AgentChatClient>() resolves there); _Exec only
   handles SubmitMessageRequest + StartExecutionTrigger.
 - AIExtensions TypeRegistry trimmed to the 2 surviving message types.

Verification: SubThreadHangRepro.HungSubThread_UserCancelOnParent_
PropagatesAndStopsSubThread passes consistently (28s). The
HungSubThread_WithoutUserCancel_StaysExecuting test is flaky (16s timeout
when the cache's missing-satellite window is wider than the test's 15s
budget) — flake was present before this branch's changes and is not a
regression.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
The Slice 2 channel-bridge subscribed to the process-wide
IMeshNodeStreamCache. Because the cache holds ONE shared ReplaySubject
per path and permanently captures OnError, subscribing before the
sub-thread create finishes poisons the cache entry for every other
consumer (heartbeat scanner, GUI, MCP) — they all replay the stale
"no node found" error forever.

src/MeshWeaver.AI/ChatClientAgentFactory.cs:
  ExecuteDelegationAsync now opens fresh per-call subscriptions via
  workspace.GetMeshNodeStreamBypassCache(path) wrapped in
  Defer + Catch + Repeat(200ms). Each delegation invocation has its
  own private observation pipeline; the read-during-create race only
  affects this one delegation, not the global cache.

src/MeshWeaver.Hosting/MeshNodeStreamCache.cs:
  No semantic change — single blank line addition (whitespace).

src/MeshWeaver.Layout/Composition/LayoutAreaHost.cs:
  generator.GetType() (was generator?.GetType()) — the parameter is
  non-nullable per its use on the next line, so the ?. was just
  papering over a nullability warning.

test/MeshWeaver.AI.Test/ToolTimeoutAttributeTest.cs:
  XML docs on the 3 new test methods to clear CS1591.

Verification: Threading.Test 110/112 locally (up from 107/112), the
remaining flake is CancelStream_StopsExecutionAndMarksAsCancelled.
SubThreadHangRepro's UserCancelOnParent + WithoutUserCancel both pass
intermittently — the 16s flake is a separate test-class-interference
issue that needs work but isn't a regression.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…d create

Two race fixes for the read-during-create window:

MeshNodeStreamCache.cs:
  Hydration subscription now retries on "no node found" errors instead
  of permanently OnError-ing the shared ReplaySubject. Retry budget:
  30 attempts × 200ms = 6s. Other errors (permission denials, transient
  routing) still propagate as before. Without this, a single early read
  against a not-yet-created node poisons the cache entry for every
  subsequent subscriber (heartbeat scanner, GUI, MCP).

ChatClientAgentFactory.ExecuteDelegationAsync:
  AWAIT meshService.CreateNode(subThreadNode) BEFORE emitting Dispatched
  / installing the cache subscription. The CreateNode IObservable emits
  OnNext when the request commits — by then the node IS in storage, so
  subsequent reads cannot OnError with "no node found". Emitting
  Dispatched too early lets the heartbeat scanner (which reads
  cache.GetStream over ActiveDelegationPaths) hit the cache before
  the node exists.

Combined: SubThreadHangRepro both tests pass in isolation (~28-46s);
local Threading.Test suite at 109/112 (improvement from 107/112).
Remaining 2 failures are test-suite interference (pass solo).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Three coordinated fixes for `relation _access.access does not exist`
errors on PG-backed tests:

1. PostgreSqlPathRoutingAdapter.ResolveState: for paths whose first
   segment starts with `_` (satellite namespaces — `_Access`, `_Activity`,
   `_Thread`, `_UserActivity`), demote PendingCreate to Absent. The cache's
   information_schema probe queries `_access` (lowercased namespace) but
   the real schema is `system_access` (from DefaultPartitionProvider),
   so probe returns PendingCreate. If we let AdapterForWriteState
   lazy-create from that, we'd build a competing `_access` schema
   alongside `system_access`. Static-partition registration's MarkExists
   populates the cache with Exists(def with Schema="system_access") at
   startup; we honor that but block lazy-create fallback.

2. PostgreSqlPartitionedMeshQuery.ResolvePinnedPartition: don't pin to
   the literal lowercased first segment when it starts with `_` —
   for the same schema-name-mismatch reason. Fall through to the
   GetSchemasWithTableAsync fan-out which discovers the actual schemas
   via information_schema.

3. PostgreSqlCrossSchemaQueryProvider.QueryAcrossSchemasAsync: catch
   42P01 ("relation does not exist") at BOTH ExecuteReaderAsync (eager
   plan) and ReadAsync (deferred). The satellite table may not have been
   created in one of the targeted schemas yet — the next query will see
   it after the write commits. Logs at Debug + yields no rows.

Verified Hosting.PostgreSql.Test 8/8 pass on the previously-failing
filter (PgOnlyProdShapeTests + EffectivePermissionPostgresTest +
OrganizationOnboardingIntegrationTests). Full suite 411/414 — only
NotifyDedupTriggerTests.DeleteFiresNotify failure remains (pre-existing
flake on the notify channel listener — passes in CI baseline).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
….Test fix

Auth partition + ApiToken mirror
- V27 migration: rename `user` schema → `auth`; add `ApiToken` to the
  per-partition mirror trigger (was User/Group/Role/VUser only); backfill
  existing ApiTokens; drop the old `_user_schema` function. Idempotent.
- DefaultPartitionProvider: partition renamed `User` → `Auth`, schema
  `user` → `auth` — single pure-lookup partition for all auth nodeTypes.
- PostgreSqlSchemaInitializer: 3 trigger callsites updated to the new
  function name + auth schema check.
- InMemoryStorageAdapter: fires IDataChangeNotifier.NotifyChange on
  Write/Delete for the same {User, Group, Role, VUser, ApiToken} filter
  the PG trigger uses. Non-auth writes stay quiet so layout-render hot
  paths don't cascade.

Why: token validation, GetTokensForUser, UserIdentityCache previously
fanned a synced query across every per-user partition. The auth mirror
makes each lookup a constant-cost single-schema query. Fixes
Auth.Test.GetTokensForUser_RevokedToken_StillAppearsAsRevoked which
relied on synced-query updates that never fired under the in-memory
backend.

Watcher prime (Persistence.Test)
- Replace Task.Delay(100) "watcher warm-up" with stream-based probe
  pattern (`PrimeWatcherAsync`). Probes are written on an interval
  larger than the debounce window until the watcher actually delivers
  a notification — proves inotify is live before the real test action
  runs. Removes the only Task.Delay-as-warmup pattern in the file;
  remaining Task.Delay(500) calls are sanctioned "wait to confirm
  nothing happened" negative tests.

PG integration test
- New AuthMirrorTriggerTests covers INSERT/UPDATE/DELETE end-to-end
  on ApiToken and User, plus a negative case for non-auth nodeType.

Local validation: Persistence.Test 86/86, Auth.Test 79/79,
AuthMirrorTriggerTests 5/5, FileSystemChangeWatcherTests 10/10.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The activity Cancel button is surfaced in three layout-area views
(Overview, Progress, CancelButton) — all share the same visibility rule:
button visible iff Status == Running && RequestedStatus != Cancelled.

Extract that rule into a single static predicate
ActivityLayoutAreas.IsCancelButtonVisible(log) and replace the inlined
copies. Add ActivityCancelVisibilityTest with 8 cases pinning the truth
table: Running shows the button; Running + cancel-already-requested
hides it (in-flight, would double-handle); Succeeded/Failed/Cancelled
all hide regardless of RequestedStatus.

Prevents a future refactor from silently re-introducing a Cancel button
on a terminal activity — that would patch RequestedStatus on a finished
ActivityLog (no-op at best, confused-user race at worst).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add Logger.LogDebug at each delegation message-flow seam in
ExecuteDelegationAsync so a "where did we lose the message?" trace is
self-evident in logs:

- ENTER: callId, subThreadPath, target, parentResp
- CREATE_BEGIN / CREATE_OK / CREATE_FAIL: meshService.CreateNode await
- EMIT_DISPATCHED: when chat.Delegations fires Dispatched
- CACHE_SUB_INSTALL / CACHE_SUB_ERROR: CombineLatest seam
- CANCEL_REQ_CALLER_TOKEN: caller cancellation registered
- OBS #N: each frame the channel reader receives (with thread/cell
  status + text length + completion flag)
- TERMINAL: which condition triggered exit (cellDone vs threadIdle)
- DRAIN_EXIT: terminal frame count + final status + error

When SubThreadHangRepro flakes in suite-mode (the test passes solo but
intermittently fails in the full suite), enable
MeshWeaver.AI.ChatClientAgentFactory at Debug level and the trace will
show whether: (a) the create await never completes, (b) the dispatch
event never reaches the stamper, (c) the cache subscription only
emits the initial empty observation, or (d) the heartbeat cancel never
propagates back to a CompletedAt on the cell. Without these markers
the suite-mode flake is a black box — we'd see only the test failing
on a 15 s wait timeout with no signal as to which seam dropped the
message.

Verification: solo SubThreadHangRepro both pass (19 s + 29 s,
heartbeat detected stale at 14 s in the WithoutUserCancel scenario).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Timeout in a propagation wait is an error, not a "got fewer events than
expected, carry on" condition. The previous silent-timeout shape made
flakes (one missed change-notifier event) surface later as a confusing
assertion failure ("expected 2 got 0") instead of pointing at the
actual root cause ("I waited 30s and the notification never arrived").

- WaitForChanges now throws TimeoutException with observed-vs-expected
  counts on timeout. The 3 s default bumps to 30 s — generous enough
  to absorb CI contention without bumping into xUnit's per-test 60 s
  methodTimeout ceiling. Same shape applied to all three callsites:
  FileSystemObservableQueryTests, ProjectViewsReactiveTests,
  ObserveQueryTests.
- Loud failure messages call out the gap so debugging starts at the
  right place ("event never arrived" vs "assertion mismatch").

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
InstallServerWatcher subscribed to the thread's MeshNodeStream with
DistinctUntilChanged + Where(NeedsDispatch), then posted a
StartExecutionTrigger for each emission that passed both filters. It
had NO gate to prevent re-dispatching when the fingerprint flickered
(Idle → Executing → Idle within the same submission). Each "false
positive" Idle-with-pending emission produced a second
StartExecutionTrigger → HandleStartExecutionOnExec created a second
response cell → thread.Messages list ended up with both ids → next
round's LoadFullConversationHistoryFromMesh returned the orphan
"Allocating agent..." cell as a phantom assistant message in chat
history. ChatHistoryTest.TwoMessages_NoDuplicates_CorrectRoles
caught this when run in suite-mode under timing pressure.

Fix mirrors the gate already present in
ActivityControlPlaneExtensions.WatchSubmission: an int field flipped
0→1 on the dispatch post, released back to 0 only when the next
emission shows NeedsDispatch=false (i.e. the dispatch took effect and
the round actually started). The next genuine dispatch (a fresh round
after this one settles) is then allowed through.

ChatHistoryTest now passes in the suite; 108/112 remaining; 3 unrelated
flakes (ThreadResumeTest, DelegationWriteCountTest, CancelStream).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
UpdateRemote previously waited for "next non-null emission" via
`remoteStream.Skip(1).Take(1).Timeout(10s)` to surface the patched
state to the caller. This races whenever the owner emits intermediate
state between the subscribe and the patch landing — e.g. thread node
emits many times per round via [JsonIgnore] StreamingText /
StreamingToolCalls mutations, so the caller often got the FIRST
intermediate emission and saw PRE-patch state. The
CancelStream_StopsExecutionAndMarksAsCancelled test caught this:
"Expected RequestedCancellationAt to have a value but found null"
even though the patch had been posted.

Fix: return the lambda's locally-computed `updated` snapshot
optimistically. The patch IS posted (with caller's AccessContext);
if it fails server-side, observer.OnError fires from the post path.
The lambda is pure + the owner's merge is RFC 7396 deterministic, so
`updated` equals the owner's post-merge state for the lambda's intent.
Callers that need the OWNER's fully reconciled state should re-read
via a fresh GetMeshNodeStream(path).Take(1) — the first emission is
always the full sync snapshot.

Also: NO-OP path (lambda returned same instance) now logs at Warning
instead of Debug, including the Content type. Most common cause is a
typed pattern match (e.g. `curr.Content is MeshThread t`) failing
because Content is still a JsonElement that the framework didn't
deserialize to the registered type. The warning surfaces this
silent-swallowed-update without requiring Debug level.

Verified Data.Test 193/193, Layout.Test 188/192, Threading.Test
went from 108/112 → 110/112 with this + the earlier
single-flight-gate fix on InstallServerWatcher (commit c2d2e69).
CancelStream now passes solo (13s).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…pter + quiet Orleans test logging

- AddInMemoryPersistence: pass IDataChangeNotifier into the
  InMemoryStorageAdapter constructor. Without this, the optional
  notifier parameter defaulted to null and the auth-type
  NotifyChange path from the previous commit silently did nothing
  — symptom: Auth.Test.GetTokensForUser_RevokedToken passed locally
  by luck but timed out on CI.
- Hosting.Orleans.Test/appsettings.json: Default log level Debug →
  Warning. The Debug default flooded CI output with per-grain
  activation traces, blowing past the 6 m wall-clock cap on the
  test runner. Matches the other test project log levels.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…riteCount quiesce

LoadFullConversationHistoryFromMesh and LoadPriorUserMessagesFromMesh now read the
thread node + each cell through `cache.GetStream(...)` directly instead of routing
through `workspace.GetMeshNodeStream(...)`. The cache is the hot, shared,
path-keyed Replay(1) handle every consumer subscribes to — same handle the
per-node hub's writes flow through, so reads observe the exact post-write state
without going through IMeshQueryCore (which lags).

Also bumps QuiesceTimeout to 5 s on DelegationWriteCountTest — streaming-heavy
rounds leave ~9 in-flight DataChangeRequest callbacks at dispose, and the
default 500 ms budget is too tight.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…swallows

Three hardcoded `"User"` partition references missed when V27 renamed the
central auth-lookup partition (a3b7d54) — they routed `nodeType:User`
queries to a partition that no longer exists, broke include-partition
discovery, and pointed AddUserData() at a non-existent partition. CI
regressions: Acme.Test (10 tests), Monolith.Test LinkedInTelemetryImport,
AI.Test fixture-init timeout.

- UserNodeType.cs: route `nodeType:User` to `Auth` only when the query
  has no path constraint. Queries like `ACME/User/Oliver` keep their
  natural partition routing instead of being hijacked to Auth.
- IncludedPartitionStaticProvider.cs: ReservedNames includes "Auth"
  (alongside "User" for back-compat). Without this, the partition node
  would be emitted twice when "Auth" is the schema.
- SampleDataExtensions.AddUserData: target the renamed `Auth` partition.
- StorageAdapterMeshQueryProvider.cs + NodeTypeLayoutAreas.cs: replace
  silent `.Catch<T, Exception>(_ => Observable.Return/Empty)` with the
  same fallback PLUS a warning log. Silent swallows were hiding
  TimeoutException — when a synced query failed (e.g. a stale partition
  reference after the rename), the layout area degraded to an empty list
  and the test timed out 30s later with no clue why. Now the log line
  points at the actual swallowed exception.
- ThreadExecution.cs: add `using System.Reactive.Threading.Tasks;`
  needed by the recent `await PushToResponseMessage(...).ToTask()` chain.

Local validation: LinkedInTelemetryImport_CompilesAndRendersImportArea
passes in 21s (previously hung). Auth + Persistence still green.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The 4 GetControlStream timeouts in TodoDataChangeWorkflowTest were
10s — tight when the test's first invocation has to wait for the
ACME/Project NodeType to compile (Roslyn cold-compile of 5 Code
pieces ≈ 10-15s on slow CI). Three tests hit the ceiling
(AllTasksView_ShouldIncludeNewTaskButton, SummaryView_RespondsToDataAccess,
AllTasksView_CompilesAndRendersWithDeletedSection) while DetailsView
fit just under. Bumping all four to 30s keeps the budget consistent
and absorbs CI cold-compile latency.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…expected

LoadFullConversationHistoryFromMesh fans cell reads out in parallel via
CombineLatest (was serial .Concat()), waits for each cell to have populated
text (cache may emit a pre-text shell first), and on per-cell timeout drops
the cell with a warning. The outer projector:

  • throws TimeoutException if cellIds were expected but ALL cells dropped —
    refusing to submit empty history that would corrupt the agent's context
    (root cause of ChatHistoryTest's "expected 4 messages got 5" flake)
  • logs HISTORY_PARTIAL warning and proceeds when SOME cells loaded.

Three new tests (LoadConversationHistoryTest) pin the contract: full /
partial / all-fail. Per-cell timeout is now a parameter so the all-fail
test runs in ~1 s instead of multiple per-cell budget seconds.

Also fixes a real await-deadlock in the error branch of ExecuteMessageAsync
(`await PushToResponseMessage(...).FirstAsync().ToTask()` is forbidden in
src/ per AsynchronousCalls.md) — replaced with Subscribe-continuation —
and adds the missing Subscribe to two previously-discarded
PushToResponseMessage calls (Completed/Cancelled paths) whose writes were
silently never firing. "No completion callback" warning downgraded to Debug
(expected for every non-delegated thread completion).

Test infra: MeshWeaver INFO logging across test/appsettings.json,
Threading.Test/, AI.Test/ so per-test logs and TRX capture the full
message-flow trace for hang diagnosis. CLAUDE.md adds a stronger
"never re-run tests unless code changes" rule (with carve-outs for harness
crash and user-killed runs).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…dTimeout

Three independent fixes for CI failures that have been red across multiple
recent runs:

1. **Layout.Test FATAL** (`InvalidOperationException: There is no currently
   active test` at MapToToggleableControlTest.cs:506) — EditPersistenceTest's
   SetupAutoSave subscribed a Debounce(100ms).Subscribe(async entity => …)
   that fires AFTER the test method exits, throwing from xUnit's invalidated
   ITestOutputHelper AND awaiting .FirstAsync().ToTask() (forbidden in src per
   AsynchronousCalls.md). Replaced with Subscribe-only, no Output.WriteLine.

2. **Auth.Test ApiTokenServiceTests** (GetTokensForUser_{Revoked,Deleted}) —
   Observable.Interval(50ms).SelectMany(GetTokensForUser.FirstAsync) polling
   races the synced-query Replay(1) cache: every poll subscribed fresh, got
   the cache's buffered (stale) Initial snapshot, and never waited for the
   live Updated emission. Switched to one long-lived
   `service.GetTokensForUser(id).Where(predicate).FirstAsync().Timeout(15s)`
   subscription — the canonical wait pattern.

3. **xunit.runner.json methodTimeout 30 s → 60 s** — matches the value
   documented in CLAUDE.md ("xUnit v3 config: methodTimeout: 60000ms") so
   slow-but-correct tests on cold-cache CI agents don't get pre-empted.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…ed individually

Reverts the global bump from 133ae39. Keep the default at 30 s; specific
slow tests can opt in via [Fact(Timeout=...)] or class-level config when
discussed.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
… pure IObservable

Convert the IAsyncEnumerable-wrap in StorageAdapterMeshQueryProvider's
RunQuery from `Task.Factory.StartNew(async ...)` to
`Observable.FromAsync(async cancel => ...).SubscribeOn(TaskPoolScheduler.Default)`.

Same property the previous shape was buying — no inherited TaskScheduler
captured by the async state machine — now achieved with SubscribeOn:
the Subscribe lands on the thread pool, FromAsync's async lambda starts
there, and its continuations stay on the pool. No more explicit Task
allocations or DenyChildAttach gymnastics. Token plumbing: the FromAsync
overload that takes (CancellationToken) gives us per-subscription
cancellation; we link with the per-observable cts so Dispose cancels the
in-flight enumeration.

Stepping stone for the IMeshQueryProvider → IObservable<QueryResult> refactor.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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3 participants