docs: note ResetTask hub method and TaskResetService

src/ClaudeDo.Worker/CLAUDE.md

@@ -27,6 +27,7 @@ ASP.NET Core hosted service that executes tasks via Claude CLI in isolated envir
 - **ClaudeProcess** — spawns `claude -p --output-format stream-json --verbose --dangerously-skip-permissions`. Writes prompt to stdin, reads NDJSON from stdout. Supports CancellationToken (kills process tree).
 - **ClaudeArgsBuilder** — dynamically constructs CLI args; supports `--model`, `--append-system-prompt`, `--agents`, `--json-schema`, `--resume`
 - **StreamAnalyzer** — parses rich NDJSON output; extracts session_id, token counts, turn counts, result text, structured output. Replaces MessageParser.
+- **TaskResetService** — discards a failed task's worktree and resets the task row to Manual; preserves run history.
 - **WorktreeManager** — creates worktrees at `claudedo/{taskId[:8]}` branches, commits changes with semantic messages, updates DB with head commit and diff stats
 - **CommitMessageBuilder** — formats `{commitType}(slug): title\n\ndescription\n\nClaudeDo-Task: taskId`
 - **AgentFileService** — manages `~/.todo-app/agents/*.md` agent definition files; exposes list/refresh via SignalR
@@ -44,7 +45,7 @@ Each CLI invocation is recorded in the `task_runs` table via `TaskRunRepository`
 
 ## SignalR Hub
 
-**WorkerHub** methods: `Ping()`, `GetActive()`, `RunNow(taskId)`, `CancelTask(taskId)`, `WakeQueue()`, `ContinueTask(taskId, prompt)`, `GetAgents()`, `RefreshAgents()`
+**WorkerHub** methods: `Ping()`, `GetActive()`, `RunNow(taskId)`, `CancelTask(taskId)`, `WakeQueue()`, `ContinueTask(taskId, prompt)`, `ResetTask(taskId)`, `GetAgents()`, `RefreshAgents()`
 
 **HubBroadcaster** events: `TaskStarted`, `TaskFinished`, `TaskMessage`, `WorktreeUpdated`, `TaskUpdated`, `RunCreated`