Rename Collect Agent Host Debug Logs action to Export, download remote agenthost.log

[roblourens]

Changes

• Rename the Collect Agent Host Debug Logs action to Export Agent Host Debug Logs... (added trailing ellipsis since it opens a save dialog)
• Rename command id agentHost.collectDebugLogs → agentHost.exportDebugLogs
• For remote agent host sessions, also download the remote agenthost.log from the server's logs directory and include it in the zip as remote-agenthost.log

Remote log discovery

The remote log is fetched via the vscode-agent-host:// filesystem proxy from <home>/<serverDataFolderName>/data/logs/<latest>/agenthost.log. We try the product's serverDataFolderName first and fall back to .vscode-server / .vscode-server-insiders. The most recent date-stamped subdirectory (by mtime) is used. Failure is non-fatal — it's logged and the rest of the export continues.

[Copilot]

Pull request overview

This PR updates the Agents window’s developer command for gathering agent host diagnostics by renaming the action/command from “Collect” to “Export…” (to reflect the save dialog), and extends the export for remote agent hosts to also attempt to include the server-side agenthost.log in the resulting zip.

Changes:

• Renames the action and command id to agentHost.exportDebugLogs and updates the UI title to “Export Agent Host Debug Logs...”.
• Registers the renamed action in the Sessions chat contribution.
• Adds remote log discovery/downloading via the vscode-agent-host:// filesystem proxy and includes it as remote-agenthost.log when available.

Show a summary per file

File	Description
src/vs/sessions/contrib/chat/electron-browser/chat.contribution.ts	Updates action registration/import to the renamed Export action.
src/vs/sessions/contrib/agentHost/electron-browser/exportDebugLogsAction.ts	Renames the action/command and adds remote agenthost.log download + inclusion in the zip.

Copilot's findings

Comments suppressed due to low confidence (2)

src/vs/sessions/contrib/agentHost/electron-browser/exportDebugLogsAction.ts:237

• dir.resource is already a vscode-agent-host:// URI (returned from fileService.resolve). Wrapping dir.resource.path again via toRemote(...) double-encodes the path (e.g. /file/-/file/-/...) and will cause readFile to fail. Build the log URI by joining onto the existing dir.resource (or by joining logsDirUri + dir.name) rather than re-wrapping the path string.
  src/vs/sessions/contrib/agentHost/electron-browser/exportDebugLogsAction.ts:216
• The code returns early when serverDataFolderName is undefined, so it will never attempt the documented fallbacks (.vscode-server / .vscode-server-insiders). If productService.serverDataFolderName can be missing (e.g. dev/custom products), consider still trying the fallback folder names instead of bailing out.

• Files reviewed: 2/2 changed files
• Comments generated: 0