Activity Log: Show MCP agent metadata

[jkmassel]

Description

Adds support for displaying MCP (Model Context Protocol) agent metadata in the Activity Log, matching the iOS implementation (WordPress-iOS #25397).

When an activity was performed by an MCP agent, a "via {client}" label (e.g., "via Claude") is now shown in both the list view and the detail view.

Changes across the full data pipeline:

• API parsing: Added is_mcp_agent and mcp_client fields to the REST client actor response model
• Data model: Added isMCPAgent and mcpClient to ActivityLogModel.ActivityActor
• Database: Added MCP_AGENT and MCP_CLIENT columns to the ActivityLog table with migration (v211→212)
• List view: Shows "· via {client}" next to the summary text using a dot separator
• Detail view: Shows "via {client}" below the actor role

Ref: AIINT-290

Screenshots

Testing instructions

Verify MCP metadata in Activity Log list:

1. Log in to a site that has activity log entries from MCP agents
2. Navigate to Activity Log from the menu

• Verify entries from MCP agents show "· via {client}" next to the summary (e.g., "Post modified · via Anthropic/ClaudeAI")
• Verify entries without MCP metadata do NOT show the dot separator or metadata text

Verify MCP metadata in Activity Log detail:

1. Tap on an activity log entry that was made by an MCP agent

• Verify the detail view shows the actor name, role, and "via {client}" below the role
• Verify the layout does not clip or overlap with the date/time on the right

Verify non-MCP entries are unaffected:

1. Tap on a regular (non-MCP) activity log entry

• Verify the detail view shows actor name and role as before, with no extra metadata line

🤖 Generated with Claude Code

[dangermattic]

	1 Warning
⚠️	This PR is assigned to the milestone 26.8. The due date for this milestone has already passed. Please assign it to a milestone with a later deadline or check whether the release for this milestone has already been finished.

Generated by 🚫 Danger

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress Android by scanning the QR code below to install the corresponding build.

	App Name	WordPress Android
	Build Type	Debug
	Version	pr22706-d6bb765
	Build Number	1487
	Application ID	org.wordpress.android.prealpha
	Commit	d6bb765
	Installation URL	2b4ksv3qq4p8g

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack Android by scanning the QR code below to install the corresponding build.

	App Name	Jetpack Android
	Build Type	Debug
	Version	pr22706-d6bb765
	Build Number	1487
	Application ID	com.jetpack.android.prealpha
	Commit	d6bb765
	Installation URL	1ufpucdtgder0

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[codecov]

Codecov Report

❌ Patch coverage is 70.21277% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 37.50%. Comparing base (cc26b8d) to head (d6bb765).
⚠️ Report is 4 commits behind head on trunk.

Files with missing lines	Patch %	Lines
...s/android/fluxc/persistence/ActivityLogSqlUtils.kt	0.00%	9 Missing ⚠️
...rdpress/android/fluxc/persistence/WellSqlConfig.kt	33.33%	2 Missing ⚠️
...d/viewmodel/activitylog/ActivityActorExtensions.kt	80.00%	0 Missing and 1 partial ⚠️
...twork/rest/wpcom/activity/ActivityLogRestClient.kt	85.71%	0 Missing and 1 partial ⚠️
...xc/network/rest/wpcom/dashboard/CardsRestClient.kt	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            trunk   #22706   +/-   ##
=======================================
  Coverage   37.49%   37.50%           
=======================================
  Files        2286     2287    +1     
  Lines      120484   120513   +29     
  Branches    16501    16510    +9     
=======================================
+ Hits        45173    45195   +22     
- Misses      71637    71645    +8     
+ Partials     3674     3673    -1     

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[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[adalpari]

LGTM and works as expected!