Bring buildErrandPrompt() and buildErrandRevisionPrompt() in line with
the codebase pattern used by execute, plan, detail, etc. Import shared
DEVIATION_RULES and GIT_WORKFLOW constants. Add session_startup (pwd,
git status, CLAUDE.md, expected-pwd.txt), execution_rules, and
anti_patterns sections. Keep signal format inline since errands use
result.message instead of the standard questions format.
Merge two useEffects in AgentOutputViewer into one to fix race where
agentId reset clears messages after data effect sets them on remount.
Add "commit before signaling" instruction to errand prompts so
Changes tab shows diff after completion.
Add errand.requestChanges procedure that re-spawns an agent in the
existing worktree with user feedback. Replace raw <pre> diff blocks
with syntax-highlighted ErrandDiffView using FileCard components.
Add Output/Changes tabs to the active errand view.
Implements three primitives needed before errand tRPC procedures can be wired up:
- agentManager.sendUserMessage(agentId, message): resumes an errand agent with a
raw user message, bypassing the conversations table and conversationResumeLocks.
Throws on missing agent, invalid status, or absent sessionId.
- writeErrandManifest(options): writes .cw/input/errand.md (YAML frontmatter),
.cw/input/manifest.json (errandId/agentId/agentName/mode, no files/contextFiles),
and .cw/expected-pwd.txt to an agent workdir.
- buildErrandPrompt(description): minimal prompt for errand agents; exported from
prompts/errand.ts and re-exported from prompts/index.ts.
Also fixes a pre-existing TypeScript error in lifecycle/controller.test.ts (missing
backoffMs property in RetryPolicy mock introduced by a concurrent agent commit).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
