Keep Code Context follow-up watch active

[alphali]

Summary

After answering one follow-up Code Context round, coding agents could post a completion response and stop pulling, so a later round on the same TRD required the user to say continue. The helper also treated every terminal round as a reason to stop.

The skill now keeps the same agent turn alive for follow-up rounds, continues pulling with the original request code, follows the server-provided next_action, and reports the transition from context collection to answer preparation. Pre-create rounds still stop when TRD creation owns the next step.

Privacy and compatibility

Activity reports contain only round id, revision, and phase. No repository content is added. The helper retains fallback behavior for servers that do not yet return next_action.

Requires the lifecycle contract in getdoable/trd#476 and the MCP activity tool in getdoable/doable-mcp#16.

Verification

• node --test tests/doable-code-context-helper.test.mjs (2 passed)
• No credentials, customer data, private URLs, local paths, or .doable/ state included
• Documentation and public answer contract updated