ab87d0d803
Three related fixes, all originating from a `[api:error] Request failed` log line showing a 500 on `GET /api/tasks/FN-8610/runtime-fallback`. 1. Missing/deleted tasks now return 404 instead of 500. `getTaskImpl` signalled a miss with a bare `Error`, and route catches only mapped errno `ENOENT` to 404 — a leftover from the file-backed storage era. In Postgres mode nothing sets an errno code, so every unknown/missing/soft-deleted/wrong-project read returned 500. Adds a typed `TaskNotFoundError` (message byte-identical) plus a shared `task-lookup-error` mapper applied across the task, session-diff, git/GitHub, workflow and file-workspace route registrars. The same bare throw existed on both archive-lifecycle delete paths, so `DELETE /tasks/:id` was affected too. 2. 5xx logs now carry the origin stack. `rethrowAsApiError` constructed a fresh `ApiError` from the message and discarded the original, so the `FNXC:ApiErrorDiagnostics` contract logged the rethrow site rather than the throw site — the reported log entry had no stack at all. Threads `cause` through the error factories and walks the chain (bounded, cycle-guarded). 3. Task deletions are attributable, and non-operator deletes notify. `task:deleted` audit rows recorded `agentId: "system"` for every HTTP delete, making an operator click indistinguishable from a script or an agent; the calling agent's task id was accepted by the store and then never persisted. Adds a `callerKind` union recorded in audit metadata, tags every delete call site, and stamps a self-reported `x-fusion-client` header from the dashboard client. When the caller is `agent-tool` or `api-unattributed`, a best-effort notice is sent to the operator mailbox; operator and engine deletes stay silent. `x-fusion-client` is attribution, not authentication — anything can send it. No delete-blocking, gating or permission logic is added here. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Changeset Format Guide
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Required body format
---
"@runfusion/fusion": minor
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summary: Add a Command Center productivity control for LOC backfills.
category: feature
dev: Uses the new `fn_backfill_loc` tool; settings key `commandCenter.locBackfill`.
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|---|---|---|
summary |
Yes | One line, user-facing, max 120 chars. Describe what changed for the operator. |
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dev |
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