[api-sync] fix(interactions): align InteractionContext with ReactiveUI upstream API

[github-actions]

Summary

Aligns InteractionContext<TInput, TOutput> and its related interfaces with the ReactiveUI upstream API changes shipped in the breaking: satisfy the analyzer gate commit (e740afe, #4432, released as part of the 24.x series).

ReactiveUI changes

• e740afe (breaking: satisfy the analyzer gate across every target framework, #4432):
  • InteractionContext<TInput, TOutput> constructor changed from internal to public, allowing external creation for testing/mocking.
  • IsHandled and GetOutput() switched to Volatile.Read(ref _outputSet) for correct cross-thread visibility of the value written by Interlocked.CompareExchange in SetOutput.
  • [DebuggerDisplay("Input = {Input}, IsHandled = {IsHandled}")] added to InteractionContext.
  • XML doc comments added to IInteractionContext<TInput, TOutput>, IOutputContext<TInput, TOutput>, and InteractionContext.

DynamicData changes

No API-affecting upstream changes in the last 7 days. Latest release (9.4.33, 2026-06-30) contained:

• Race fix in ExpireAfter for the ForSource variant (R3Ext's ExpireAfter already guards correctly via lock(gate) and items.TryGetValue checks).
• Filter fix for Dictionary<,> mutation during enumeration on pre-.NET Core 3.0 targets (not applicable to R3Ext's net8+ targets).

Breaking changes

The InteractionContext<TInput, TOutput> constructor was previously internal; it is now public. This is an additive change — existing code is unaffected. Users can now create InteractionContext instances directly, which is useful for unit testing interaction handlers without going through Interaction<TInput, TOutput>.

Warning

Firewall blocked 7 domains

The following domains were blocked by the firewall during workflow execution:

• crl3.digicert.com
• crl4.digicert.com
• ocsp.digicert.com
• s.symcb.com
• s.symcd.com
• tscrl.ws.symantec.com
• tsocsp.ws.symantec.com

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "crl3.digicert.com"
    - "crl4.digicert.com"
    - "ocsp.digicert.com"
    - "s.symcb.com"
    - "s.symcd.com"
    - "tscrl.ws.symantec.com"
    - "tsocsp.ws.symantec.com"

See Network Configuration for more information.

Generated by 🔄 API Sync Check — ReactiveUI & DynamicData · sonnet46 2.5M · ◷

---

Note

This was originally intended as a pull request, but GitHub Actions is not permitted to create or approve pull requests in this repository.
The changes have been pushed to branch api-sync/reactiveui-dynamicdata-aug-2026-8edc9981578b46d7.

Click here to create the pull request

To fix the permissions issue, go to Settings → Actions → General and enable Allow GitHub Actions to create and approve pull requests. See also: gh-aw FAQ

Show patch preview (129 of 129 lines)

From e590657b63e2b0b1b78e38b6f34fb2cbff5dd6fc Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Mon, 17 Aug 2026 13:39:26 +0000
Subject: [PATCH] fix(interactions): align InteractionContext with ReactiveUI
 upstream API

- Make InteractionContext constructor public (upstream uses public ctor)
- Use Volatile.Read in IsHandled and GetOutput for correct thread visibility
- Add [DebuggerDisplay] attribute to InteractionContext
- Add XML doc comments to IInteractionContext, IOutputContext, InteractionContext

Motivated by ReactiveUI breaking: satisfy the analyzer gate (e740afe, #4432)
which updated InteractionContext to use Volatile.Read and added DebuggerDisplay.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 R3Ext/Interactions/IInteractionContext.cs | 13 +++++++++++
 R3Ext/Interactions/IOutputContext.cs      |  6 +++++
 R3Ext/Interactions/InteractionContext.cs  | 28 ++++++++++++++++++++---
 3 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/R3Ext/Interactions/IInteractionContext.cs b/R3Ext/Interactions/IInteractionContext.cs
index 82de346..c219114 100644
--- a/R3Ext/Interactions/IInteractionContext.cs
+++ b/R3Ext/Interactions/IInteractionContext.cs
@@ -1,10 +1,23 @@
 namespace R3Ext;
 
+/// <summary>Contains contextual information for an interaction.</summary>
+/// <typeparam name="TInput">The type of the interaction's input.</typeparam>
+/// <typeparam name="TOutput">The type of the interaction's output.</typeparam>
+/// <remarks>
+/// Instances of this interface are passed into interaction handlers. The <see cref="Input"/> property exposes
+/// the input to the interaction, whilst the <see cref="SetOutput"/> method allows a handler to provide the
+/// output. Handlers should call <see cref="SetOutput"/> exactly once; subsequent calls indicate a logic error and
+/// will throw. Check <see cref="IsHandled"/> before invoking long-running logic if only one handler should respo
... (truncated)