Update quoted replies & new quotes features

[corinagum]

• Remove WithReplyToId(), update ToQuoteReply() and mark it [Obsolete]
• Add QuotedReplyEntity with nested QuotedReplyData (MessageId required, SenderId/SenderName/Preview/Time/IsReplyDeleted/ValidatedMessageReference optional); register in Entity JSON converter
• Add GetQuotedMessages() on MessageActivity to read inbound quoted reply entities
• Add AddQuote(messageId, text?) builder on MessageActivity (appends quote placeholder + optional text)
• Add PrependQuote(messageId) on MessageActivity (prepends quote placeholder before existing text, used internally by Reply()/Quote())
• Update Reply() to delegate to Quote() when Activity.Id is set; remove conversation copy (redundant — AspNetCorePlugin.Send() handles it) and ;messageid= stripping (redundant — APX normalizes server-side)
• Add Quote() on context — sends a message with a quoted message reference prepended to the text. Entity + placeholder only stamped for MessageActivity.
• Mark all quoted reply types and methods as [Experimental("ExperimentalTeamsQuotedReplies")]
• Add context-level unit tests for Reply() and Quote()
• Add Samples.Quoting sample exercising all APIs

[Copilot]

Pull request overview

This PR updates the SDK’s quoted-reply support to use Teams’ modern quotedReply entity + <quoted messageId="..."/> placeholder format, adds APIs for creating/reading quoted replies, and introduces tests + a sample app to exercise the new behavior.

Changes:

• Introduces QuotedReplyEntity / QuotedReplyData and registers it in the entity JSON converter.
• Adds GetQuotedMessages() and AddQuotedReply(...) on MessageActivity, and updates Context.Reply(...) plus new Context.QuoteReply(...) helpers to stamp quoted-reply metadata.
• Adds unit tests and a new Samples.QuotedReplies project demonstrating end-to-end usage.

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
Tests/Microsoft.Teams.Apps.Tests/Microsoft.Teams.Apps.Tests.csproj	Suppresses experimental diagnostic for quoted replies in Apps tests.
Tests/Microsoft.Teams.Apps.Tests/Contexts/ContextQuotedReplyTests.cs	Adds context-level tests validating Reply() / QuoteReply() stamping behavior.
Tests/Microsoft.Teams.Api.Tests/Microsoft.Teams.Api.Tests.csproj	Suppresses experimental diagnostic for quoted replies in Api tests.
Tests/Microsoft.Teams.Api.Tests/Json/Entities/QuotedReplyEntity.json	Adds golden JSON payload for quoted reply entity serialization tests.
Tests/Microsoft.Teams.Api.Tests/Entities/QuotedReplyEntityTests.cs	Adds serialization/deserialization and helper API tests for quoted replies.
Samples/Samples.QuotedReplies/appsettings.json	Adds sample configuration for the quoted replies demo app.
Samples/Samples.QuotedReplies/Samples.QuotedReplies.csproj	Adds new sample project wired to experimental quoted-reply APIs.
Samples/Samples.QuotedReplies/README.md	Documents sample commands and quoted-reply usage patterns.
Samples/Samples.QuotedReplies/Properties/launchSettings.TEMPLATE.json	Adds launch profile template for the new sample.
Samples/Samples.QuotedReplies/Program.cs	Implements demo bot behavior showing read/write quoted replies.
Libraries/Microsoft.Teams.Apps/Contexts/Context.Send.cs	Updates Reply() quoting behavior and adds QuoteReply() context APIs.
Libraries/Microsoft.Teams.Api/Entities/QuotedReplyEntity.cs	Adds the new quoted reply entity types.
Libraries/Microsoft.Teams.Api/Entities/Entity.cs	Registers quotedReply in entity JSON (de)serialization.
Libraries/Microsoft.Teams.Api/Activities/Message/MessageActivity.cs	Adds GetQuotedMessages() and AddQuotedReply(...) builder.
Libraries/Microsoft.Teams.Api/Activities/Activity.cs	Removes WithReplyToId(), updates ToQuoteReply() and marks it obsolete.

Comments suppressed due to low confidence (1)

Libraries/Microsoft.Teams.Api/Activities/Activity.cs:201

• WithReplyToId(string) was removed from Activity. If this library has external consumers, removing a public fluent setter is a breaking change; it may be safer to keep the method and mark it [Obsolete] (or provide a compatible alternative) to avoid forcing downstream recompiles/changes.

    public virtual Activity WithId(string value)
    {
        Id = value;
        return this;
    }

    public virtual Activity WithChannelId(ChannelId value)
    {
        ChannelId = value;
        return this;
    }

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[Copilot]

Pull request overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (1)

Libraries/Microsoft.Teams.Api/Activities/Activity.cs:203

• WithReplyToId(string) was removed from the fluent Activity API. Since the rest of WithXyz(...) methods remain, removing this public method is a source/binary breaking change for consumers that used it to set ReplyToId. Consider keeping it (at least temporarily) as an [Obsolete] shim that assigns ReplyToId and returns this, or ensure the breaking change is intentional and called out in release notes/versioning.

    public virtual Activity WithId(string value)
    {
        Id = value;
        return this;
    }

    public virtual Activity WithChannelId(ChannelId value)
    {
        ChannelId = value;
        return this;
    }

    public virtual Activity WithFrom(Account value)

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[Copilot]

Pull request overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 5 comments.

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[Copilot]

Pull request overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 5 comments.

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[Copilot]

Pull request overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 3 comments.

Comments suppressed due to low confidence (1)

Libraries/Microsoft.Teams.Api/Activities/Activity.cs:201

• WithReplyToId(string value) was removed from Activity, which is a breaking change for consumers relying on the fluent builder API. If the goal is to deprecate this surface, consider keeping the method and marking it [Obsolete] (or providing an alternative builder) rather than removing it outright, and ensure the change is reflected in the public API/semver strategy.

    public virtual Activity WithId(string value)
    {
        Id = value;
        return this;
    }

    public virtual Activity WithChannelId(ChannelId value)
    {
        ChannelId = value;
        return this;
    }

---

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[Copilot]

Pull request overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (1)

Libraries/Microsoft.Teams.Api/Activities/Activity.cs:201

• Removing the public fluent helper WithReplyToId(...) is a breaking change for consumers (especially those using the builder-style API), even if ReplyToId remains. Consider keeping the method as [Obsolete] (forwarding to ReplyToId) for at least one release, or ensure this ships with an appropriate major version bump/release note.

    public virtual Activity WithId(string value)
    {
        Id = value;
        return this;
    }

    public virtual Activity WithChannelId(ChannelId value)
    {
        ChannelId = value;
        return this;
    }

---

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