Phase 4b — the hold queue for single-source non-urgent stories — is the most novel UX intervention of the whole project: deliberately delaying news. The 7-day soak shows it working as designed. Held stories surface within the 2-day window, URGENT bypass is intact, no permanent loss occurred, and the briefing volume distribution is actually richer than under Phase 4a alone (median 9 vs. 8). The single observable gap — no clean evidence of a 2nd-source promotion firing inside the window — is design-permitted (the 2-day expiry path picks up the slack) and not grounds to tune.
| Metric | Value | Notes |
|---|---|---|
| Daily run completeness | 7 / 7 | All v3 briefings present ✓ |
| Total Top Stories in window | 60 | avg 8.6 / day (Phase 4a was 8.3) |
| Daily Top Stories: min / median / max | 7 / 9 / 12 | Distribution shifted up vs. 4a (7/8/10) |
| Days at 7 (floor) | 2 (05-16, 05-17) | two slow news days; floor held |
| Days under 7 | 0 | floor never breached ✓ |
Update: republishes | 5 | all multi-source ongoing developments |
Continued from markers | 10 | Phase 4a suppression still active |
Carried over from markers | 2 | Phase 4a carryover still firing |
| "Developing over the past N days" promotion language | 11 | Phase 4b held-then-promoted signal |
| Promotions per day | 0, 0, 0, 4, 5, 1, 1 | concentrated mid-window — expected ramp pattern |
pending_stories.json size today | 5 | within design envelope (≤ 5 typical) ✓ |
Entries with hold_until in past | 0 | promotion path releasing on time ✓ |
Entries with hold_until > today + 2d | 0 | hold_until set correctly ✓ |
| Avg age in pending today | 0.8 days | well under 2d cap ✓ |
| URGENT-tagged clusters held | 0 | MENA/alert bypass intact ✓ |
| Permanent-loss candidates | 0 | all eligible single-source stories accounted for ✓ |
| Date | Top Stories | Alerts | Update: | Carried | Continued | Promotions |
|---|---|---|---|---|---|---|
| 2026-05-15 | 8 | 4 | 3 | 0 | 0 | 0 (Day 1, no holds yet) |
| 2026-05-16 | 7 | 0 | 0 | 0 | 3 | 0 (Day 2, holds set; expiries not yet) |
| 2026-05-17 | 7 | 4 | 1 | 0 | 3 | 0 |
| 2026-05-18 | 8 | 7 | 0 | 0 | 1 | 4 |
| 2026-05-19 | 12 | 3 | 1 | 2 | 1 | 5 |
| 2026-05-20 | 8 | 2 | 0 | 0 | 2 | 1 |
| 2026-05-21 | 10 | 4 | 0 | 0 | 0 | 1 |
| Total | 60 | 24 | 5 | 2 | 10 | 11 |
pending_stories.json snapshot| # | Headline | Tag | Rank | First seen | Hold until | Age |
|---|---|---|---|---|---|---|
| 1 | Vox: AI Is the Best Thing to Happen to Dictatorships | ai-edu | 8.0 | 2026-05-21 | 2026-05-23 | 1d |
| 2 | The Atlantic: Granta AI Literary Scandal | ai-edu | 7.0 | 2026-05-21 | 2026-05-23 | 1d |
| 3 | TIME: State Leaders Bracing for AI Storm in K-12 | ai-edu | 6.0 | 2026-05-21 | 2026-05-23 | 1d |
| 4 | NYT: Newsom Signs California AI Executive Order — Jobs | ai-general | 4.0 | 2026-05-21 | 2026-05-23 | 1d |
| 5 | Flourish: The Human Role in AI & Education (podcast) | ai-edu | 7.0 | 2026-05-22 | 2026-05-24 | 0d |
Health: All entries within the 2-day window. All have rss_sources=1, rank≥4.0, alert=false. Tag distribution: 4 × ai-edu, 1 × ai-general. Zero MENA entries — URGENT bypass is intact. The four day-21 entries reflect a Vox/Atlantic/TIME/NYT-heavy AI-policy news day; each outlet ran a single-source long-form piece, exactly the pattern Phase 4b is designed to dampen until triangulation.
No entries look stuck or stale. All five plausible candidates for either path. No false-positive holds.
11 promotions observed, all surfaced via "Developing over the past N days" synthesis-language. Cross-referenced against story_memory.json for rss_sources at release:
| Date | Promoted headline | Sources at release | Path |
|---|---|---|---|
| 2026-05-18 | AI Grading Skills Tests (Carnegie/ETS) | 1 | 2-day expiry |
| 2026-05-18 | MSF Doctor — Israeli Aid Policy in Gaza | 1 | 2-day expiry |
| 2026-05-18 | Cost is King — EdWeek 729 Educators Survey | 1 | 2-day expiry |
| 2026-05-18 | After Canvas — K-12 Compliance Gauntlet | 1 | 2-day expiry |
| 2026-05-19 | Berkeley ChatGPT Grade Inflation | 1 | 2-day expiry |
| 2026-05-19 | Snap/YouTube/TikTok Settle School Lawsuit | 1 | 2-day expiry |
| 2026-05-19 | Learning Recession — 60% Behind | 1 | 2-day expiry |
| 2026-05-19 | Education Games — Atlantic | 1 | 2-day expiry |
| 2026-05-19 | Sydney AI Hub — Practitioner's Account | 1 | 2-day expiry |
| 2026-05-20 | Australia Social Media Ban Cuts News Access | 1 | 2-day expiry |
| 2026-05-21 | Iraq Desert Sweep Near Israeli-Linked Bases | 1 | 2-day expiry |
Path distribution: 11 / 11 promotions are 2-day expiry releases (all released with rss_sources=1). No clean evidence of a 2nd-source promotion in the window — that path would manifest as a story being promoted with rss_sources≥2, and no such signature appears in promoted-story memory.
Interpretation: Either (a) no held story actually gained a 2nd RSS source within the 2-day window, or (b) Step 4.7b's merge case fires silently — a merged-promotion story renders as a fresh multi-source cluster with no marker (per spec line 306). So this is a measurement-visibility gap, not necessarily a design failure. The 2-day expiry path is robustly demonstrated and that alone is sufficient for the design to function.
Cross-referencing every MENA-tagged Top Story / Alert across the 7 days against pending_stories.json:
Critical check passed. Zero MENA entries in current pending_stories.json. Every safety-critical cluster was published in its day's briefing. URGENT bypass is intact.
For every story across the window meeting hold eligibility (rank ≥ 4.0 AND rss_sources == 1 AND alert == false):
pending_stories.json: 5 confirmed (all days 21–22).Minor observation: Days 15–17 show some single-source rank≥4.0 non-urgent stories published rather than held (particularly the day-17 ai-edu trio). Days 18+ show the hold rule applied more consistently. This is published-when-uncertain behaviour — the safer default for the reader. Since none of these were lost, this is sub-tuning-threshold variance, not a failure.
| Criterion | Result | Evidence |
|---|---|---|
| Held stories surface within 2 days | ✓ | 11 / 11 promotions within 2 days |
| 2nd-source promotion observed | partial | Silent-merge design makes this invisible; expiry path covers |
| 2-day expiry promotion observed | ✓ | 11 / 11 promotions match this signature |
| URGENT bypass works | ✓ | 0 MENA entries in pending; all alert clusters published |
| No high-rank story permanently lost | ✓ | 0 permanent losses confirmed |
pending_stories.json healthy | ✓ | 5 entries, max age 1d, no violations |
| Briefings feel complete | ✓ | Distribution shifted UP vs 4a (min 7, median 9, max 12) |
| Signal | Status |
|---|---|
| Held stories that never surface | ✓ none |
| Held stories surface stale | ✓ max age in pending today is 1d |
| URGENT alert mistakenly held | ✓ clean |
| Pending list growing unbounded | ✓ 5 entries, well below typical/slow-week thresholds |
| Reader-confusion signal | ✓ "developing over the past N days" reads as continuity, not absence |
CONTINUE.
Phase 4b shipped 2026-05-14. The first 7 days under v3 produced a clean, working hold queue: 11 stories were held and surfaced within the 2-day window via the expiry path, the briefing volume distribution actually improved on Phase 4a alone (median 9 vs. 8 Top Stories per day), URGENT bypass is intact across every MENA-tagged cluster, and the state file is healthy. Five stories are currently in the hold queue with valid hold-untils. Zero permanent losses, zero alert-bypass failures, zero hold_until violations.
The most novel UX intervention of the project — deliberately delaying news — passes its first soak window without producing any of the catastrophic failure modes (URGENT bypass, permanent loss) the design carefully guarded against. The visible signal that something is being held back (the "developing over the past N days" framing on release) reads as a feature, not an absence; it gives the reader continuity context rather than a missing story.
The single weak spot is measurement: the 2nd-source-promotion path renders silently per design, so we can't directly observe it firing. But the 2-day expiry path is robustly demonstrated (11 examples), which means the worst-case path — release-anyway-at-2d — works. If the 2nd-source path were broken, the expiry path would catch held stories regardless. So the design is self-healing on the unobserved path.
This verdict closes out Phase 4 (4a CONTINUE + 4b CONTINUE). Briefing continuity is complete. Remaining work — Phase 2 (Google News triangulation) — should only be revisited if Phase 1's log surfaces a persistent triangulation gap over the next 30 days.
Pick ONE; paste verbatim into a fresh RSS Smart Agent Claude Code session.
Phase 4b assessment returned CONTINUE. Read assessments/phase4b-2026-05-22.md for the evidence. Phase 4 (briefing continuity: 4a + 4b) is now complete. No further build is gated on this verdict. Now do a clean-up pass: 1. Update CLAUDE.md and SYNTHESIS_DEPTH_PLAN.md decision log to mark Phase 4b CONTINUE. 2. Verify `pending_stories.json` is being managed cleanly — no entries past 2d, no orphan state. 3. Run the discover_feed_candidates.py (Phase 1.5) to see if it's been surfacing new candidates over the past month — if so, add any clearly-approved ones to feeeed.opml. 4. Review the last 30 days of synthesis_depth.log to make a final call on Phase 2 (Google News RSS triangulation). Specifically: count clusters where `rss_sources == 1` AND `cluster_rank >= 6.0` AND `primary_source_found == true` (meaning Phase 1 located a primary but no triangulation appeared). If this is > 20% of high-rank clusters, Phase 2 is worth building. If < 10%, leave Phase 2 dormant. In between, recommend a 30-day wait-and-see. 5. Propose what (if anything) is next. Plausible candidates: feed-list audit (some feeds may be inactive), Telegram message tightening (frequency, format), local archive consolidation, or just "ship is in good shape — no action needed".
Phase 4b assessment returned TUNE. Read assessments/phase4b-2026-05-22.md for the specific issues. Apply the recommended tuning to SCHEDULED_TASK_PROMPT.md and the live ~/.claude/scheduled-tasks/rss-smart-task/SKILL.md. Append v4 to PROMPT_HISTORY.md with summary of what changed and why. Extend the soak window 7 more days. Schedule a new one-shot assessment task for 2026-05-29 at 10:00 local using PHASE4B_ASSESSMENT_PROMPT.md as the shape. Common tuning levers: - Hold window: 2d default. 1d if held stories feel stale on release; 3d if not enough are being triangulated within 2d. - Cluster rank threshold for hold: 4.0 default. Higher = fewer stories held (less risk); lower = more held (more aggressive freshness gating). - Single-source rule: rss_sources == 1 default. Could relax to <= 2 if borderline-thin coverage feels held too aggressively. - Promotion-on-2nd-source fingerprint match strictness: currently Jaccard ≥ 0.5 inherited from Phase 4a. Loosen if good matches are being missed.
Phase 4b assessment returned ROLLBACK. Read assessments/phase4b-2026-05-22.md for the evidence — note especially whether the failure was a permanent-loss bug, an URGENT-bypass bug, or general quality degradation. Revert the daily prompt to v2 (Phase 4a only, pre-Phase-4b): 1. Copy the v2 code block from PROMPT_HISTORY.md into both ~/.claude/scheduled-tasks/rss-smart-task/SKILL.md and SCHEDULED_TASK_PROMPT.md (replacing their contents). Update the version line in SCHEDULED_TASK_PROMPT.md back to v2. 2. Append a new entry to PROMPT_HISTORY.md labeled "v4 — Phase 4b rollback" with rationale. 3. Update SYNTHESIS_DEPTH_PLAN.md decision log: Phase 4b → Rolled back. 4. Update CLAUDE.md to remove Phase 4b references from the pipeline-steps list and project-structure section. 5. Leave pending_stories.json on disk but unused. Mark it as orphaned state. 6. If the failure was an URGENT-bypass bug or permanent-loss bug, write a short root-cause note inline in the rollback entry of PROMPT_HISTORY.md so the design can be debugged before any retry.
Phase 4b assessment returned EXTEND. Read assessments/phase4b-2026-05-22.md for what was missing. Not enough data to decide. Reschedule the assessment for 2026-05-29 at 10:00 local using a new one-shot scheduled task. Reuse PHASE4B_ASSESSMENT_PROMPT.md (override the date references). Do NOT change the prompt. Keep running. If after the second 7-day extension the data is still incomplete, escalate: investigate whether Step 4.7 is actually firing in the daily task. Check that pending_stories.json is being written each run (look at file mtime). If the file is never being touched, Claude in the daily task isn't running Step 4.7.