Sample: opt targeted-messages example into slash commands

[corinagum]

Updates the targeted-messages example to demonstrate the slash-commands opt-in per the docs spec (microsoft/teams-sdk#2843, MicrosoftDocs/msteams-docs#14182).

Changes

• examples/targeted-messages/appPackage/manifest.json (new) — shipped at manifestVersion: "devPreview" because the slash-commands opt-in fields are only defined in the devPreview schema today:
  • bots[].supportsTargetedMessages: true opts the bot into receiving slash-command-style targeted messages.
  • bots[].commandLists[].triggers: ["slash"] declares test send / test update / test delete / test public / test inbound as slash commands surfaced in the Teams / picker (scoped to team and groupChat).
• .gitignore — narrowly-scoped exception so this one example's manifest can be tracked. The general examples/**/appPackage/ exclusion remains in place for other examples.
• examples/targeted-messages/src/main.py — new test inbound handler that reads activity.recipient.is_targeted and reports whether the inbound message was delivered as a targeted message (the signal slash commands arrive with).
• examples/targeted-messages/README.md — refreshed commands table, new "Manifest configuration" section documenting the new fields.

Test plan

• python3 -m py_compile examples/targeted-messages/src/main.py clean
• pyright examples/targeted-messages/src/main.py clean
• examples/targeted-messages/appPackage/manifest.json validates against the Teams devPreview schema (placeholder ${{...}} tokens excepted)
• Sample bot's test inbound handler verified live in Teams: broadcast branch fires when the inbound is not targeted (the targeted branch will fire once slash commands start delivering with recipient.is_targeted = True)

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates the examples/targeted-messages sample to demonstrate opting targeted-messages into Teams slash commands via the devPreview manifest schema, and adds an inbound check to show when a message arrived as “targeted”.

Changes:

• Add a devPreview Teams manifest that opts the bot into slash-triggered targeted messages and lists slash commands.
• Add test inbound handler to report whether the inbound activity was targeted.
• Update docs and .gitignore to track the sample’s manifest and describe the new configuration/commands.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 3 comments.

File	Description
examples/targeted-messages/src/main.py	Adds test inbound command handler and updates help text.
examples/targeted-messages/appPackage/manifest.json	New devPreview manifest enabling slash-triggered targeted messages and listing commands.
examples/targeted-messages/README.md	Updates commands table and documents devPreview manifest opt-in fields.
.gitignore	Un-ignores the targeted-messages manifest so it can be committed.