workflow-fix: /daily route-3 filings dedup against open daily-held tasks

Overview / Motivation

Auto-filed by the workflow-fix-on-bug protocol from a workflow-fix candidate raised on task #1472 (emitting agent: /issue orchestrator).

Goal

Add a same-subject dedup scan to /daily route-3 filings: before filing a needs-human task, scan open daily-held tasks for informative-token overlap and log "already tracked in #M" instead of filing a duplicate.

Workflow gap

• Bug observed: /daily route-3 filed #1472 (2026-07-17) duplicating open #1140 (2026-07-08) — the same Codex-outage spend decision tracked twice; route 3 has no dedup backstop by its own documentation.
• Why it is a workflow gap: route-2 filings carry fp-dedup (wf-fix-fp:<fp> tag + is_open_workflow_fix_task), but route-3 filings deliberately skip it, and a LONG-LIVED held condition (a 3-week vendor outage) recurs in the nightly problem sweep and re-files the same decision every time it resurfaces. The PM Needs you block then carries N copies of one decision.
• Confidence (emitter): medium
• verified-at-filing: grep -rliE "codex.*(quota|outage|single.claude)" tasks/proposed/*/body.md → 2 hits (tasks/proposed/1140/body.md, tasks/proposed/1472/body.md — the duplicate pair) (2026-07-17). Per-target: grep -n "route 3 has no such backstop" .claude/skills/daily/SKILL.md → 1 hit (L441; context READ — it documents the ABSENCE of a route-3 dedup, it does not implement one, so the gap is confirmed un-landed); grep -n -iE "dedup" scripts/daily_drive_filings.py → route-3 arm at L16 reads "skips fp-dedup (#1228)" (context READ — the skip is deliberate for FINGERPRINT dedup; no same-subject scan exists either).

Proposed change (candidate diff sketch — refine in planning)

scripts/daily_drive_filings.py (route-3 arm) + .claude/skills/daily/SKILL.md (route-3 prose):
+ Before filing a route-3 item, enumerate OPEN tasks tagged `daily-held`
+ (proposed / on_hold / blocked) and compare informative title+body tokens
+ (the #1446 recently-closed-sibling advisory's token-overlap approach,
+ applied to OPEN daily-held tasks).
+ On a >=2-informative-token overlap match: do NOT file; record outcome
+ "already-tracked" with the existing task id in filed.jsonl + the /daily
+ report, and (optionally) post a one-line freshness note on #M.
+ Fail-open: overlap scan errors -> file as today (never lose a held item).

Scope / surfaces

• Primary target: scripts/daily_drive_filings.py, .claude/skills/daily/SKILL.md
• Grep the workflow surface for the pattern before editing (grep -rn "route 3" .claude/skills/daily/SKILL.md scripts/daily_drive_filings.py) and update every hit; list them in the plan.

Constraints / invariants

• Workflow-surface only — never experiment code, configs/, or tasks/.
• scripts/workflow_lint.py --check-asks passes; ruff on touched files passes; if workflow.yaml or CLAUDE.md change, they stay consistent with the rule file.
• Dedup must be FAIL-OPEN (a scan failure files as today — a held item is never silently dropped; nothing-silently-dropped is /daily's core contract).
• This session runs under EPM_WORKFLOW_FIX_SESSION=1 and carries a workflow_fix_target: Provenance line — it MUST NOT auto-route any of its own subagents' workflow-fix candidates (recursion guard, .claude/rules/workflow-fix-on-bug.md § Recursion guard).

Provenance

• workflow_fix_target: scripts/daily_drive_filings.py, .claude/skills/daily/SKILL.md
• fingerprint: f8fc681f6baf

Surfaced prose (verbatim, from the #1472 session): "/daily route-3 has no dedup against open daily-held tasks — SKILL.md L441 documents 'route 3 has no such backstop' and daily_drive_filings.py L16 'skips fp-dedup (#1228)'; the live incident is #1140 (2026-07-08) vs #1472 (2026-07-17), the same Codex-outage decision filed twice 9 days apart."