Adds the foundational capability to clear a story from the running
server's in-memory CRDT state without restarting the process. This is
story 521, motivated by the 2026-04-09 incident where stories 478 and
503 kept resurrecting from in-memory CRDT after every sqlite delete /
worktree removal / timers.json clear. The only previous remedy was a
full docker restart.
Changes:
- server/src/crdt_state.rs: new `pub fn evict_item(story_id: &str)`.
Looks up the item's CRDT OpId via the visible-index map, calls the
bft-json-crdt list `delete()` primitive to construct a tombstone op,
runs it through the existing `apply_and_persist` machinery (which
signs, applies to the in-memory CRDT, and queues for persistence to
crdt_ops), rebuilds the story_id → visible_index map, and drops the
in-memory CONTENT_STORE entry. The tombstone survives a restart
because it's persisted as a real CRDT op.
- server/src/http/mcp/story_tools.rs: new `tool_purge_story` MCP
handler that takes a story_id and calls evict_item. Deliberately
minimal — does NOT touch agents, worktrees, pipeline_items shadow
table, timers.json, or filesystem shadows. Compose with stop_agent,
remove_worktree, etc. for a full purge. Story 514 (delete_story
full cleanup) is the future "do it all" tool.
- server/src/http/mcp/mod.rs: registers the `purge_story` tool in the
tools list and dispatch table.
Usage:
mcp__huskies__purge_story story_id="<full_story_id>"
Returns a string confirming the eviction. The story will no longer
appear in get_pipeline_status, list_agents, or any other API that
reads from the in-memory CRDT view, and on the next server restart
the persisted tombstone op will keep it from being reconstructed.
This is a prerequisite for story 514 (delete_story full cleanup) and
useful for any "kill it with fire" operator need.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Timmy
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