Make backlog-scan lanes say what they actually selected

The next repo-local sweep target was ROADMAP #65: backlog-scanning
lanes could stop with prose-only summaries naming roadmap items, but
there was no machine-readable record of which items were chosen,
which were skipped, or whether the lane intended to execute, review,
or no-op. The fix teaches completed lane persistence to extract a
structured selection outcome while preserving the existing quality-
floor and review-verdict behavior for other lanes.

Constraint: Keep selection-outcome extraction on the existing `lane.finished` metadata path instead of inventing a separate event stream
Rejected: Add a dedicated selection event type first | unnecessary for this focused closeout because `lane.finished` already persists structured data downstream can read
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: If backlog-scan summary conventions change later, update `extract_selection_outcome`, its regression test, and the ROADMAP closeout wording together
Tested: cargo fmt --all --check; cargo clippy --workspace --all-targets -- -D warnings; cargo test --workspace; architect review APPROVE after roadmap closeout update
Not-tested: Downstream consumers that may still ignore `lane.finished.data.selectionOutcome`

ROADMAP.md

@@ -496,13 +496,13 @@ Model name prefix now wins unconditionally over env-var presence. Regression tes
 
 62. **Worker state file surface not implemented** — **done (verified 2026-04-12):** current `main` already wires `emit_state_file(worker)` into the worker transition path in `rust/crates/runtime/src/worker_boot.rs`, atomically writes `.claw/worker-state.json`, and exposes the documented reader surface through `claw state` / `claw state --output-format json` in `rust/crates/rusty-claude-cli/src/main.rs`. Fresh proof exists in `runtime` regression `emit_state_file_writes_worker_status_on_transition`, the end-to-end `tools` regression `recovery_loop_state_file_reflects_transitions`, and direct CLI parsing coverage for `state` / `state --output-format json`. Source: Jobdori dogfood.
 
-**Scope note (verified 2026-04-12):** ROADMAP #31, #43, and #63-#68 currently appear to describe acpx/droid or upstream OMX/server orchestration behavior, not claw-code source already present in this repository. Repo-local searches for `acpx`, `use-droid`, `run-acpx`, `commit-wrapper`, `ultraclaw`, `roadmap-nudge-10min`, `OMX_TMUX_INJECT`, `/hooks/health`, and `/hooks/status` found no implementation hits outside `ROADMAP.md`, and the earlier state-surface note already records that the HTTP server is not owned by claw-code. With #45, #67, and #69 now fixed, the remaining unresolved items in this section look like external tracking notes rather than confirmed repo-local backlog; re-check if new repo-local evidence appears.
+**Scope note (verified 2026-04-12):** ROADMAP #31, #43, and #63-#68 currently appear to describe acpx/droid or upstream OMX/server orchestration behavior, not claw-code source already present in this repository. Repo-local searches for `acpx`, `use-droid`, `run-acpx`, `commit-wrapper`, `ultraclaw`, `roadmap-nudge-10min`, `OMX_TMUX_INJECT`, `/hooks/health`, and `/hooks/status` found no implementation hits outside `ROADMAP.md`, and the earlier state-surface note already records that the HTTP server is not owned by claw-code. With #45, #65, #67, and #69 now fixed, the remaining unresolved items in this section look like external tracking notes rather than confirmed repo-local backlog; re-check if new repo-local evidence appears.
 
 63. **Droid session completion semantics broken: code arrives after "status: completed"** — dogfooded 2026-04-12. Ultraclaw droid sessions (use-droid via acpx) report `session.status: completed` before file writes are fully flushed/synced to the working tree. Discovered +410 lines of "late-arriving" droid output that appeared after I had already assessed 8 sessions as "no code produced." This creates false-negative assessments and duplicate work. **Fix shape:** (a) droid agent should only report completion after explicit file-write confirmation (fsync or existence check); (b) or, claw-code should expose a `pending_writes` status that indicates "agent responded, disk flush pending"; (c) lane orchestrators should poll for file changes for N seconds after completion before final assessment. **Blocker:** none. Source: Jobdori ultraclaw dogfood 2026-04-12.
 
 64. **Artifact provenance is post-hoc narration, not structured events** — dogfooded 2026-04-12. The ultraclaw batch delivered 4 ROADMAP items and 3 commits, but the event stream only contained log-shaped text ("+410 lines detected", "committing...", "pushed"). Downstream consumers (clawhip, lane orchestrators, monitors) must reconstruct provenance from chat messages rather than consuming first-class events. **Fix shape:** emit structured artifact/result events with: `sourceLanes`, `roadmapIds`, `files`, `diffStat`, `verification: tested|committed|pushed|merged`, `commitSha`. Remove dependency on human/bot narration layer to explain what actually landed. Blocker: none. Source: gaebal-gajae dogfood analysis 2026-04-12.
 
-65. **Backlog-scanning team lanes emit opaque stops, not structured selection outcomes** — dogfooded 2026-04-12. $ralph $team sessions scanning ROADMAP Immediate Backlog stop with summary text naming open items, but no machine-readable signal of: which item(s) were selected for work, which were skipped and why, whether execution happened vs review-only vs no-op. **Fix shape:** add structured "selection outcome" event with `chosenItems`, `skippedItems`, `rationale`, `action: execute|review|no-op`. Stop emitting "check backlog" as prose summary without selection contract. Blocker: none. Source: gaebal-gajae dogfood analysis 2026-04-12.
+65. **Backlog-scanning team lanes emit opaque stops, not structured selection outcomes** — **done (verified 2026-04-12):** completed lane persistence in `rust/crates/tools/src/lib.rs` now recognizes backlog-scan selection summaries and records structured `selectionOutcome` metadata on `lane.finished`, including `chosenItems`, `skippedItems`, `action`, and optional `rationale`, while preserving existing non-selection and review-lane behavior. Regression coverage locks the structured backlog-scan payload alongside the earlier quality-floor and review-verdict paths. **Original filing below.**
 
 66. **Completion-aware reminder shutdown missing** — dogfooded 2026-04-12. Ultraclaw batch completed and was reported as done, but 10-minute cron reminder (`roadmap-nudge-10min`) kept firing into channel as if work still pending. Reminder/cron state not coupled to terminal task state. **Fix shape:** (a) cron jobs should check task completion state before firing; (b) or, provide explicit `cron.remove` on task completion; (c) or, reminders should include "work complete" detection and auto-expire. Blocker: none. Source: gaebal-gajae dogfood analysis 2026-04-12.