diff --git a/docs/00_overview/DASHBOARD.md b/docs/00_overview/DASHBOARD.md
index fa452f36..57a33f7b 100644
--- a/docs/00_overview/DASHBOARD.md
+++ b/docs/00_overview/DASHBOARD.md
@@ -6,7 +6,7 @@ _Top-level index across MVP1 → GA v1+ as of **2026-05-16**. Click a release na
 
 | Release | Theme | Progress | Status |
 |---|---|---|---|
-| [MVP1 / v0.1](MVP1_DASHBOARD.md) | The Loop | 37 / 38 scoped done · 3 remaining | **In progress** |
+| [MVP1 / v0.1](MVP1_DASHBOARD.md) | The Loop | 38 / 38 scoped done · 2 remaining | **In progress** |
 | [MVP2 / v0.2](MVP2_DASHBOARD.md) | Observable | 1 / 1 scoped done · 1 remaining | **In progress** |
 | MVP3 / v0.3 | Production Stacks | — | **Not yet scoped** |
 | MVP4 / v0.4 | Multi-tenant, Multi-LLM | — | **Not yet scoped** |
diff --git a/docs/00_overview/MVP1_DASHBOARD.md b/docs/00_overview/MVP1_DASHBOARD.md
index e4f0d384..1c20fa25 100644
--- a/docs/00_overview/MVP1_DASHBOARD.md
+++ b/docs/00_overview/MVP1_DASHBOARD.md
@@ -6,20 +6,16 @@ _Reflects feature-folder state as of **2026-05-16** (latest mtime of any planned
 
 ## Next up
 
-**[feat_data_table_primitive](../02_product/planned_features/feat_data_table_primitive/feature_spec.md)** — Feature, currently in **Plan**
+All scoped MVP1 features shipped 🎉
 
-Plan approved; run /impl-execute to ship
-
-```bash
-/impl-execute docs/02_product/planned_features/feat_data_table_primitive/implementation_plan.md --all
-```
+Pull from the Idea backlog or capture a new feature spec.
 
 ## MVP1 Progress
 
 | Metric | Value |
 |---|---|
-| Scoped items done | **37 / 38** (97%) — feat_/infra_/chore_/epic_ past idea stage |
-| Path to MVP1 | **3** items remaining (features + bugs + chores) |
+| Scoped items done | **38 / 38** (100%) — feat_/infra_/chore_/epic_ past idea stage |
+| Path to MVP1 | **2** items remaining (features + bugs + chores) |
 | Open bugs | 1 |
 | Open chores | 1 (idea-stage debt) |
 | Backlog ideas | 1 idea-only feat/infra (not yet scoped into MVP1) |
@@ -27,12 +23,13 @@ Plan approved; run /impl-execute to ship
 
 ## Pipeline
 
-### Done (45)
+### Done (46)
 
 | Feature | Type | One-liner | Depends on | Status |
 |---|---|---|---|---|
 | [feat_chat_agent](implemented_features/2026_05_12_feat_chat_agent/feature_spec.md) | Feature | A chat surface at `/chat/{conversation_id}` streams OpenAI completions via SSE. | `feat_contextual_help` `feat_contextual_help_mvp2` `feat_data_table_primitive` `feat_digest_proposal` `feat_fts_rank_ordering_mvp2` `feat_github_pr_worker` `feat_github_webhook` `feat_judgments_periodic_resume_sweep` `feat_llm_judgments` `feat_proposals_ui` `feat_query_inline_crud` `feat_studies_ui` `feat_study_lifecycle` `infra_adapter_elastic` `infra_arq_subprocess_test_mvp2` `infra_ci_smoke_makeup` `infra_dashboard_regen_pre_commit_conflict` `infra_e2e_seed_completed_study` `infra_foundation` `infra_frontend_stack_refresh` `infra_make_targets_split_backend_only` `infra_nvmrc` `infra_optuna_eval` `infra_per_trial_timeout` `infra_structlog_test_helpers` | [PR #60](https://github.com/SoundMindsAI/relyloop/pull/60) merged 2026-05-12 |
 | [feat_contextual_help](implemented_features/2026_05_15_feat_contextual_help/feature_spec.md) | Feature | a relevance engineer can launch their second study and interpret its digest without re-reading the tutorial, because every domain-jargon label has a one-click contextual definition grounded in the sam | — | [PR #122](https://github.com/SoundMindsAI/relyloop/pull/122) merged 2026-05-15 |
+| [feat_data_table_primitive](implemented_features/2026_05_16_feat_data_table_primitive/feature_spec.md) | Feature | Complete (PR #126, merged 2026-05-16) | — | [PR #126](https://github.com/SoundMindsAI/relyloop/pull/126) merged 2026-05-16 |
 | [feat_digest_proposal](implemented_features/2026_05_11_feat_digest_proposal/feature_spec.md) | Feature | When a study transitions to `completed`, the digest worker generates: a narrative summary (LLM-authored), a parameter-importance map (computed by `optuna.importance`), and a recommended config. | `feat_study_lifecycle` `feat_llm_judgments` | [PR #41](https://github.com/SoundMindsAI/relyloop/pull/41) merged 2026-05-11 |
 | [feat_github_pr_worker](implemented_features/2026_05_12_feat_github_pr_worker/feature_spec.md) | Feature | `POST /api/v1/proposals/{id}/open_pr` enqueues a Git worker job that clones the configured repo, edits `*.params.json`, commits with a structured message, pushes a branch, opens a GitHub PR, attaches  | `infra_foundation` `infra_adapter_elastic` `feat_study_lifecycle` `feat_digest_proposal` | [PR #45](https://github.com/SoundMindsAI/relyloop/pull/45) merged 2026-05-12 |
 | [feat_github_webhook](implemented_features/2026_05_12_feat_github_webhook/feature_spec.md) | Feature | GitHub posts to `POST /webhooks/github` with HMAC-SHA256 signature; the receiver verifies the signature, looks up the proposal by `pr_url`, updates `pr_state` and `pr_merged_at`. | `infra_foundation` `infra_adapter_elastic` `feat_github_pr_worker` | [PR #56](https://github.com/SoundMindsAI/relyloop/pull/56) merged 2026-05-12 |
@@ -81,11 +78,9 @@ Plan approved; run /impl-execute to ship
 
 _None._
 
-### Plan (1)
+### Plan (0)
 
-| Feature | Type | One-liner | Depends on | Status |
-|---|---|---|---|---|
-| [feat_data_table_primitive](../02_product/planned_features/feat_data_table_primitive/feature_spec.md) | Feature |  | — | [PR #122](https://github.com/SoundMindsAI/relyloop/pull/122) merged 2026-05-15 |
+_None._
 
 ### Spec (0)
 
@@ -110,8 +105,6 @@ graph LR
   classDef plan fill:#fef9c3,stroke:#854d0e,color:#854d0e;
   classDef spec fill:#dbeafe,stroke:#1e40af,color:#1e40af;
   classDef idea fill:#f1f5f9,stroke:#334155,color:#334155;
-  feat_data_table_primitive["data table primitive"]
-  class feat_data_table_primitive plan;
   infra_foundation["foundation"]
   class infra_foundation done;
   feat_study_lifecycle["study lifecycle"]
@@ -186,6 +179,8 @@ graph LR
   class infra_structlog_test_helpers done;
   feat_contextual_help["contextual help"]
   class feat_contextual_help done;
+  feat_data_table_primitive["data table primitive"]
+  class feat_data_table_primitive done;
   feat_study_lifecycle --> feat_digest_proposal
   feat_llm_judgments --> feat_digest_proposal
   infra_foundation --> feat_llm_judgments
diff --git a/docs/00_overview/dashboard.html b/docs/00_overview/dashboard.html
index 6d09b2a2..c4ebbf57 100644
--- a/docs/00_overview/dashboard.html
+++ b/docs/00_overview/dashboard.html
@@ -371,7 +371,7 @@ <h2>Releases</h2>
 <div class="roadmap-row">
   <div class="release-name"><a href="mvp1_dashboard.html">MVP1 / v0.1</a></div>
   <div class="theme">The Loop</div>
-  <div class="progress">37 / 38 scoped done · 3 remaining</div>
+  <div class="progress">38 / 38 scoped done · 2 remaining</div>
   <span class="state-pill in_progress">In progress</span>
 </div>
 
diff --git a/docs/02_product/planned_features/feat_data_table_primitive/feature_spec.md b/docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/feature_spec.md
similarity index 100%
rename from docs/02_product/planned_features/feat_data_table_primitive/feature_spec.md
rename to docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/feature_spec.md
diff --git a/docs/02_product/planned_features/feat_data_table_primitive/idea.md b/docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/idea.md
similarity index 100%
rename from docs/02_product/planned_features/feat_data_table_primitive/idea.md
rename to docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/idea.md
diff --git a/docs/02_product/planned_features/feat_data_table_primitive/implementation_plan.md b/docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/implementation_plan.md
similarity index 99%
rename from docs/02_product/planned_features/feat_data_table_primitive/implementation_plan.md
rename to docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/implementation_plan.md
index b787abc5..8fadcb3f 100644
--- a/docs/02_product/planned_features/feat_data_table_primitive/implementation_plan.md
+++ b/docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/implementation_plan.md
@@ -1,7 +1,7 @@
 # Implementation Plan — Shared `<DataTable>` primitive (FTS + sort + filter + URL state)
 
 **Date:** 2026-05-15
-**Status:** Draft
+**Status:** Complete (PR #126, merged 2026-05-16)
 **Primary spec:** [feature_spec.md](./feature_spec.md)
 **Policy source(s):**
 - [`docs/01_architecture/api-conventions.md`](../../../01_architecture/api-conventions.md) — cursor pagination + `X-Total-Count` + error envelope
diff --git a/docs/02_product/planned_features/feat_data_table_primitive/pipeline_status.md b/docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/pipeline_status.md
similarity index 70%
rename from docs/02_product/planned_features/feat_data_table_primitive/pipeline_status.md
rename to docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/pipeline_status.md
index 93617a57..011cc49f 100644
--- a/docs/02_product/planned_features/feat_data_table_primitive/pipeline_status.md
+++ b/docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/pipeline_status.md
@@ -28,4 +28,17 @@
 - Phases covered: single-phase delivery per Locked Decision #4. No deferred phases.
 
 ## Implementation
-- Status: Not started
+- Status: Complete
+- Date: 2026-05-16
+- PR: [#126](https://github.com/SoundMindsAI/relyloop/pull/126) (squash commit `d6115b3`, merged 2026-05-16)
+- CI: all 7 checks green on cycle 4 — backend lint + typecheck + tests + coverage, backend unit fast lane, docker buildx, frontend lint + typecheck + tests + build, gitleaks, secrets files guard, smoke (operator-path E2E)
+- Stories completed: 28 / 28 (Epic 1: 5 backend stories, Epic 2: 13 primitive stories, Epic 3: 9 table-migration stories incl. Story 3.9 inheritor, Epic 4: 2 docs/idea-capture stories)
+- Cross-model review:
+  - 3 Epic-2 phase-gate GPT-5.5 cycles (15 + 7 + 3 findings) — converged with 13 fixes applied, 7 deferred to `chore_data_table_primitive_followups`, 4 rejected with cited counter-evidence
+  - 1 Epic-3 phase-gate GPT-5.5 cycle (7 findings) — 5 accepted + fixed, 2 rejected with cited counter-evidence
+  - Final cross-model GPT-5.5 review on full PR diff: 2 findings — 1 accepted + fixed (`test-llm-rater` fixture), 1 deferred to `bug_cursor_decode_value_validation`
+- Gemini Code Assist: 7 line-level findings, all 7 accepted + fixed (commit `acfd304`). Adjudication summary posted as PR comment.
+- Deferred follow-ups captured:
+  - [`feat_fts_rank_ordering_mvp2`](../feat_fts_rank_ordering_mvp2/idea.md) — rank-ordered FTS results (per spec §16)
+  - [`chore_data_table_primitive_followups`](../chore_data_table_primitive_followups/idea.md) — 6 review-cycle items
+  - [`bug_cursor_decode_value_validation`](../bug_cursor_decode_value_validation/idea.md) — cursor payload validation
diff --git a/docs/00_overview/mvp1_dashboard.html b/docs/00_overview/mvp1_dashboard.html
index a6ffff26..69524f8d 100644
--- a/docs/00_overview/mvp1_dashboard.html
+++ b/docs/00_overview/mvp1_dashboard.html
@@ -369,12 +369,12 @@ <h1>RelyLoop MVP1 Dashboard</h1>
 <main>
 
 <section>
-  <div class="next-up">
-    <div class="eyebrow">Next up — Feature, currently in <strong>Plan</strong></div>
-    <div class="title"><a href="../../docs/02_product/planned_features/feat_data_table_primitive/feature_spec.md">Data Table Primitive</a></div>
-    <div class="one-liner"></div>
-    <div class="stage-hint">Plan approved; run /impl-execute to ship</div>
-    <code class="cmd">/impl-execute docs/02_product/planned_features/feat_data_table_primitive/implementation_plan.md --all</code>
+  <div class="next-up done">
+    <div class="eyebrow">Next up</div>
+    <div class="title">All scoped MVP1 features shipped 🎉</div>
+    <div class="one-liner">
+      Pull from the Idea backlog or capture a new feature spec.
+    </div>
   </div>
 </section>
 
@@ -382,15 +382,15 @@ <h1>RelyLoop MVP1 Dashboard</h1>
 <section>
   <h2>MVP1 Progress</h2>
   <div class="kpi-row">
-    <div class="kpi ">
+    <div class="kpi complete">
       <div class="label">Scoped items done</div>
-      <div class="value">37 / 38</div>
-      <div class="sub">97% of feat_/infra_/chore_/epic_ items past idea stage</div>
-      <div class="bar"><span style="width:97%"></span></div>
+      <div class="value">38 / 38</div>
+      <div class="sub">100% of feat_/infra_/chore_/epic_ items past idea stage</div>
+      <div class="bar"><span style="width:100%"></span></div>
     </div>
     <div class="kpi warn">
       <div class="label">Path to MVP1</div>
-      <div class="value">3</div>
+      <div class="value">2</div>
       <div class="sub">items left = features + bugs + chores</div>
     </div>
     <div class="kpi bug">
@@ -473,18 +473,7 @@ <h3>Spec <span class="count">0</span></h3>
 </div>
 
 <div class="col plan">
-  <h3>Plan <span class="count">1</span></h3>
-
-<div class="card feat" data-prefix="feat">
-  <div class="name"><a href="../../docs/02_product/planned_features/feat_data_table_primitive/feature_spec.md">Data Table Primitive</a></div>
-  <div class="meta">
-    <span class="badge feat">Feature</span>
-    <a class="pr" href="https://github.com/SoundMindsAI/relyloop/pull/122">PR #122</a><span>merged 2026-05-15</span>
-  </div>
-  <div class="one-liner"></div>
-
-
-</div>
+  <h3>Plan <span class="count">0</span></h3>
 
 </div>
 
@@ -494,7 +483,7 @@ <h3>Implementing <span class="count">0</span></h3>
 </div>
 
 <div class="col done">
-  <h3>Done <span class="count">45</span></h3>
+  <h3>Done <span class="count">46</span></h3>
 
 <div class="card feat" data-prefix="feat">
   <div class="name"><a href="../../docs/00_overview/implemented_features/2026_05_12_feat_chat_agent/feature_spec.md">Chat Agent</a></div>
@@ -520,6 +509,18 @@ <h3>Done <span class="count">45</span></h3>
 </div>
 
 
+<div class="card feat" data-prefix="feat">
+  <div class="name"><a href="../../docs/00_overview/implemented_features/2026_05_16_feat_data_table_primitive/feature_spec.md">Data Table Primitive</a></div>
+  <div class="meta">
+    <span class="badge feat">Feature</span>
+    <a class="pr" href="https://github.com/SoundMindsAI/relyloop/pull/126">PR #126</a><span>merged 2026-05-16</span>
+  </div>
+  <div class="one-liner">Complete (PR #126, merged 2026-05-16)</div>
+
+
+</div>
+
+
 <div class="card feat" data-prefix="feat">
   <div class="name"><a href="../../docs/00_overview/implemented_features/2026_05_11_feat_digest_proposal/feature_spec.md">Digest Proposal</a></div>
   <div class="meta">
@@ -1048,8 +1049,6 @@ <h2>Dependency graph (feat_ + infra_)</h2>
   classDef plan fill:#fef9c3,stroke:#854d0e,color:#854d0e;
   classDef spec fill:#dbeafe,stroke:#1e40af,color:#1e40af;
   classDef idea fill:#f1f5f9,stroke:#334155,color:#334155;
-  feat_data_table_primitive[&quot;data table primitive&quot;]
-  class feat_data_table_primitive plan;
   infra_foundation[&quot;foundation&quot;]
   class infra_foundation done;
   feat_study_lifecycle[&quot;study lifecycle&quot;]
@@ -1124,6 +1123,8 @@ <h2>Dependency graph (feat_ + infra_)</h2>
   class infra_structlog_test_helpers done;
   feat_contextual_help[&quot;contextual help&quot;]
   class feat_contextual_help done;
+  feat_data_table_primitive[&quot;data table primitive&quot;]
+  class feat_data_table_primitive done;
   feat_study_lifecycle --&gt; feat_digest_proposal
   feat_llm_judgments --&gt; feat_digest_proposal
   infra_foundation --&gt; feat_llm_judgments
@@ -1199,8 +1200,6 @@ <h2>Dependency graph (feat_ + infra_)</h2>
   classDef plan fill:#fef9c3,stroke:#854d0e,color:#854d0e;
   classDef spec fill:#dbeafe,stroke:#1e40af,color:#1e40af;
   classDef idea fill:#f1f5f9,stroke:#334155,color:#334155;
-  feat_data_table_primitive[&quot;data table primitive&quot;]
-  class feat_data_table_primitive plan;
   infra_foundation[&quot;foundation&quot;]
   class infra_foundation done;
   feat_study_lifecycle[&quot;study lifecycle&quot;]
@@ -1275,6 +1274,8 @@ <h2>Dependency graph (feat_ + infra_)</h2>
   class infra_structlog_test_helpers done;
   feat_contextual_help[&quot;contextual help&quot;]
   class feat_contextual_help done;
+  feat_data_table_primitive[&quot;data table primitive&quot;]
+  class feat_data_table_primitive done;
   feat_study_lifecycle --&gt; feat_digest_proposal
   feat_llm_judgments --&gt; feat_digest_proposal
   infra_foundation --&gt; feat_llm_judgments
diff --git a/state.md b/state.md
index 00244665..d1bff561 100644
--- a/state.md
+++ b/state.md
@@ -2,13 +2,13 @@
 
 > Read this first. Snapshots the active branch, what just shipped, what's in flight, what's queued, and where the project currently sits in the MVP1 → GA roadmap. Updated whenever a feature lands or a priority shifts.
 
-**Last updated:** 2026-05-16 (during `feat_data_table_primitive` Epic 4 docs work — shared `<DataTable>` primitive consolidating 8 hand-rolled tables onto @tanstack/react-table + FTS / sort / filter / URL-state surface across 6 list endpoints + 9 new E2E specs. Branch `feat/data-table-primitive` carries all 4 epics; PR open pending Epic 4 phase gate).
+**Last updated:** 2026-05-16 (after `feat_data_table_primitive` merged as PR #126 — 18th MVP1 feature; shared `<DataTable>` primitive consolidating 8 hand-rolled tables onto @tanstack/react-table + FTS / sort / filter / URL-state surface across 6 list endpoints. All 7 CI checks green; 4 review-fix cycles before merge).
 
 ---
 
 ## Current branch / execution context
 
-- **Branch:** `feat/data-table-primitive` (Epic 4 docs in flight). `v0.1.0` annotated tag still on `main` commit `d099536` 2026-05-13; GitHub Release at https://github.com/SoundMindsAI/relyloop/releases/tag/v0.1.0.
+- **Branch:** `main` (post-merge of PR #126 squash commit `d6115b3` 2026-05-16). Finalization docs PR off `docs/finalize-data-table-primitive`. `v0.1.0` annotated tag still on `main` commit `d099536` 2026-05-13; GitHub Release at https://github.com/SoundMindsAI/relyloop/releases/tag/v0.1.0.
 - **Active feature:** none in flight. **Three PRs shipped 2026-05-15:** PR #122 (Phase 1, 16th MVP1 feature — Tooltip primitive + 26 placements on create-study modal + study detail), PR #123 (Phase 1 finalization docs), PR #124 (Phases 2 + 3 — 17th MVP1 feature; 21 additional tooltips on judgments + proposals + cluster registration + 2 new first-run components: chat ExamplePrompts strip + Stripe-style StartHereChecklist on home page). The original "MVP1 Phase 1 only" scope-lock was reversed mid-day: operator decided to ship Phases 2 + 3 together with a Stripe-style design call rather than wait for MVP2. PR #124 took 2 hours from idea-folder reuse to merge. 47 total tooltip placements + 2 new first-run components live in `main`. **PR #122 shipped 2026-05-15 morning** — `feat_contextual_help` Phase 1 (16th MVP1 feature). Adds the first Tooltip primitive (`@radix-ui/react-tooltip@~1.2.8` + shadcn-style wrapper at `ui/src/components/ui/tooltip.tsx`), two glossary-backed wrappers (`InfoTooltip` standalone + asChild modes; `HelpPopover` click-to-open with `react-markdown` safety filter), and a 49-key glossary source-of-truth at `ui/src/lib/glossary.ts` (8 enum groups parity-tested against `enums.ts`). 26 tooltip placements across the create-study modal (Step 1 target + Step 3 template + 9 Step 5 inputs), study-header (status badge dynamic key + Best metric + Trials), trials-table (5 column headers + Sort label), and digest panel (5 section labels + Open PR enabled + Open PR disabled). The disabled Open PR button refactored from native `disabled` to `aria-disabled="true"` so it stays focusable and the tooltip reveals on focus (AC-11). Gemini Code Assist: 2 findings (1 accepted + fixed, 1 rejected with cited counter-evidence). Final GPT-5.5 review: 1 Medium accepted-framing-but-deferred. Spec converged at GPT-5.5 cycle 3 (24 findings, 23 accepted + 1 rejected); plan converged at cycle 2 (12 findings, 10 accepted + 1 rejected + 1 spec patch). UI vitest now **279 passing across 48 files** (was 249 across 45 — +3 new test files, +30 cases). Playwright E2E **8 passing** (was 5 — +3 new contextual-help tests). One follow-up filed: `infra_e2e_seed_completed_study/idea.md` tracks the E2E gap for digest-panel triggers + AC-11 (cross-subsystem helper for seeding a completed study with digest + proposal; component-level coverage is in place). Phases 2 + 3 deferred to MVP2 via `feat_contextual_help_mvp2/` (judgments + proposals tooltips; chat + cluster + home onboarding; the home-page "Start here" panel is the only product-design-shaped item).
 
 **Earlier — seven PRs shipped 2026-05-14:** `feat_judgments_periodic_resume_sweep` (PR #104, 14th MVP1 feature), `bug_query_inline_crud_since_filter_uuidv7_ms_collision` (PR #106 — UUIDv7 ms-collision test flake), `infra_dashboard_regen_pre_commit_conflict §2+§4` (PR #108 — dashboard regen idempotency + relative-link rewriting), `infra_make_targets_split_backend_only` (PR #110 — `make backend-fmt/lint/typecheck` + symmetric `ui-fmt` so Node-18 contributors aren't blocked), `chore_digest_worker_narrow_except` (PR #112 — narrowed `except Exception` allowlist to `(ValueError,)` + ERROR-level `digest_importance_failed_unexpected` event), `infra_structlog_test_helpers` (PR #114 — factored the two structlog test-assertion patterns into `backend/tests/_log_helpers.py`), and `chore_chat_last_message_preview` (PR #117 — `last_message_preview` + `last_message_at` on `ConversationSummary` via LATERAL JOIN; frontend shows preview under title + swaps displayed timestamp from `created_at` to `last_message_at`). Plus PR #116 dropped `chore_studies_ui_shadcn_polish` as won't-do (forward-compat audit on NavigationMenu primitive + ClusterFilterSelect precedent on native `<select>` for page-level controls). The 7-PR day drained the operational-friction surfaces and the last `/bug-fix`-shaped item. **MVP1 alpha + 17 features shipped (all 3 phases of feat_contextual_help on 2026-05-15) + 26 backlog items drained.** Manual maintainer steps still pending from [`release-checklist.md`](docs/03_runbooks/release-checklist.md): §4 fresh-VM hosted-OpenAI walkthrough, §5 local-LLM walkthrough, §8 feedback Discussion + design-partner channel shares. **Remaining MVP1 backlog: zero actionable items** — the MVP1 dashboard now reads `Path to MVP1: 0`. Two ideas held for MVP2 (visible on the new `MVP2_DASHBOARD.md`): `infra_arq_subprocess_test_mvp2` (folder renamed 2026-05-14 to mirror the `_mvp2` precedent — trigger-locked: arq pin bump, 3rd cron, or MVP3 hardening opt-in) and `bug_chat_long_conversation_truncation_mvp2` (paired with the just-shipped chat preview but kept on MVP2 hold per its preflight — needs `/pipeline` for migration + new LLM round-trip). Plus 4 keep-deferred items by operator decision + `infra_dashboard_regen_pre_commit_conflict §3` follow-up (runbook addendum, MVP1-eligible but low-leverage).
@@ -19,6 +19,8 @@
 
 ## Most recent meaningful changes (newest first)
 
+- **2026-05-16 — `feat_data_table_primitive` merged into `main`** as PR #126 (squash commit `d6115b3`). 18th MVP1 feature. Shared `<DataTable>` primitive consolidating 8 hand-rolled tables (studies, proposals, clusters, templates, query-sets, judgments, trials, queries + the studies-by-cluster inheritor) onto `@tanstack/react-table@~8.21.3` with co-located column configs and a page-level `useDataTableUrlState` hook owning the URL contract. Backend adds 6 Alembic migrations (`0008`–`0013` — `search_vector tsvector GENERATED ALWAYS AS … STORED` + GIN indexes), `?q=` FTS on 6 endpoints via `plainto_tsquery('english', :q)`, `?sort=<col>:<dir>` with sort-aware keyset cursor on 6 top-level + 1 per-list endpoint (trials keeps its legacy fused-wire tokens via a `sortCodec` escape hatch), new `?engine_type=` / `?environment=` filters on clusters, `?template_id=` on proposals, and closes the pre-existing `?since=` drift on judgment-lists + conversations. The 13-story Epic 2 primitive includes sortable headers, enum + fk-select filters, debounced text search, total-count display, 3 empty-state shapes, sticky headers, tooltip headers, multi-row selection + bulk-action toolbar, column-visibility menu, density toggle, keyboard nav, and the Story 2.13 lint-guard test that scans every `*.column-config.{ts,tsx}` for `filter.sourceOfTruth` discipline. **4 obsolete components deleted:** `study-status-filter-chips.tsx`, `proposal-status-filter-chips.tsx`, `proposal-source-filter-chips.tsx`, `cluster-filter-select.tsx`. **8 walkthrough guides regenerated** against the new DataTable surface. **Test coverage:** backend +33 unit (FTS predicate + sort parser), +62 integration (migration round-trip, FTS endpoints × 6 parametrized, sort pagination × 5 + trials, proposals template filter, judgments row sort), +18 contract (OpenAPI query-param surface); UI maintained 357 vitest cases across 56 files + added 9 E2E specs (one per migrated table). **Review cycles:** 3 Epic-2 GPT-5.5 phase gates (15 + 7 + 3 findings — 13 accepted, 7 deferred to `chore_data_table_primitive_followups`, 4 rejected), 1 Epic-3 phase gate (7 findings — 5 accepted, 2 rejected), 1 final cross-model (2 findings — 1 accepted, 1 deferred to `bug_cursor_decode_value_validation`), Gemini Code Assist (7 findings — all 7 accepted, including SSR-safe `usePathname` swap on `useDataTableUrlState`). **CI:** 4 cycles before green — cycle 1 surfaced 9 backend test failures from chain extension + 3 E2E failures; cycle 2 found 4 sort-header-on-empty-table races; cycle 3 found orchestrator-trial-timing race in trials E2E (resolved by switching trials E2E from click-driven to URL/API-driven assertions). **Follow-ups captured:** `feat_fts_rank_ordering_mvp2` (rank ordering deferred per spec §16 — needs cursor encoding decision), `chore_data_table_primitive_followups` (6 items: searchParams test mock factoring, `useLocalStorageSet` shape, DataTableProps `urlState` aggregate, `?limit=` coercion, TanStack `state.columnVisibility` refactor, URL-state Zod validation), `bug_cursor_decode_value_validation` (decode_cursor payload type validation). **Architecture docs:** `api-conventions.md` gains the `?q=` / `?sort=` / `?since=` table; `ui-architecture.md` gains a new "DataTable primitive" section; `data-model.md` gains a "Full-text search vectors" section + the read-only invariant; CLAUDE.md gains a "do not write to search_vector" rule + Enumerated Value Contract Discipline step 5 cross-ref.
+
 - **2026-05-15 — `feat_contextual_help` Phases 2 + 3 merged into `main`** as PR #124 (squash commit `9d22f62`). The complement to PR #122 — every remaining tooltip surface from the original idea, shipped same-day after the operator reversed the "Phase 1 only" scope-lock and asked for the full UI coverage. **21 new tooltip placements + 25 new glossary keys + 6 new enum parity tests + 2 new first-run components** layered onto Phase 1's primitives. Phase 2 (judgments + proposals): judgments-table source-filter row + Rating / Source column headers; calibration modal HelpPopover with the Cohen's κ interpretation rubric (κ ≥ 0.7 strong / 0.4–0.7 moderate / < 0.4 needs calibration); proposals list status + source filter chip rows; proposals detail header with dynamic status-badge + pr_state-badge tooltips; pr-panel Open PR button wrapped via `InfoTooltip asChild` + pr_state badge; config-diff Key/From/To column headers; metric-delta + suggested-followups card titles. Phase 3 (cluster registration + chat + home): register-cluster-modal Environment + Auth kind InfoTooltips + Credentials ref HelpPopover (multi-paragraph guidance on the `./secrets/<name>` Docker-mounted secrets pattern); new `ui/src/components/chat/example-prompts.tsx` rendering 5 click-to-send chips on empty conversations (auto-dismisses after first message); new `ui/src/components/dashboard/start-here-checklist.tsx` — Stripe-style 3-step checklist (cluster → query set + judgments → study) on the dashboard that auto-completes via TanStack Query against `/clusters`, `/judgment-lists`, `/studies` (`limit=1` + `X-Total-Count` header), with steps rendering as "locked" while predecessors are incomplete and the whole component hiding once all 3 are done. Glossary now covers 14 enum groups via `expectGlossaryGroundedAgainstEnums` (added parity for `RATING_VALUES`, `JUDGMENT_SOURCE_VALUES`, `PROPOSAL_STATUS_VALUES`, `PROPOSAL_PR_STATE_VALUES`, `AUTH_KIND_VALUES`, `ENVIRONMENT_VALUES`). **Pre-existing tests touched:** 6 test files wrapped renders in `TooltipProvider` since their components started using `InfoTooltip` — `proposals/page.test.tsx`, `proposals/[id]/page.test.tsx`, `judgments/[id]/page.test.tsx`, `pr-panel.test.tsx`, `proposal-filter-chips.test.tsx`, `register-cluster-modal.test.tsx`. Gemini Code Assist: 3 Medium findings, all accepted — removed a redundant `allStudies` query in `app/page.tsx` (was duplicating `recent.totalCount` against `/api/v1/studies`); switched a string-concat className to template literal. **Two CI fix cycles** during Phase 1 carried forward; Phase 2 + 3 went green on first attempt after the Gemini fix. Phase 2 + 3 took 2 hours from "operator wants full coverage" to merge — the established Phase 1 pattern (extend `glossary.ts` + apply wrappers + wrap pre-existing tests in `TooltipProvider`) compressed implementation time dramatically. 285 vitest tests passing across 48 files; 8 Playwright E2E preserved unchanged.
 
 - **2026-05-15 — `feat_contextual_help` Phase 1 merged into `main`** as PR #122. The first contextual-help affordance in the UI: a Tooltip primitive (`@radix-ui/react-tooltip@~1.2.8` wrapped shadcn-style with `motion-reduce:animate-none` so the project respects `prefers-reduced-motion`), two glossary-backed wrappers (`InfoTooltip` with standalone + asChild modes for non-focusable vs focusable trigger targets; `HelpPopover` click-to-open with `react-markdown` `disallowedElements=['script','iframe','style']` safety filter), and a 49-key glossary at `ui/src/lib/glossary.ts` (22 aggregate keys + 27 per-wire-value entries across 8 enum groups — all parity-tested against `enums.ts` via `expectGlossaryGroundedAgainstEnums`). 26 placements applied: create-study modal (Step 1 target + Step 3 template + Step 5: metric / k / direction / max_trials / time_budget_min / parallelism / sampler / pruner / seed = 11 total; metric/sampler/pruner use `HelpPopover` for multi-line definitions, the rest are `InfoTooltip`); study-header (dynamic status-badge key resolved via `Record<StudyStatus, ShortGlossaryKey>` + Best metric + Trials breakdown = 3); trials-table (sort label + 4 column headers — column headers conditional on rows existing, asserted resilient to empty state in E2E = 5); digest panel (5 section labels + 2 Open PR variants wrapped via `InfoTooltip asChild` = 7). The disabled Open PR button refactored from native `disabled` to `aria-disabled="true"` + `onClick={(e) => e.preventDefault()}` + Tailwind `cursor-not-allowed opacity-50` so it stays Tab-focusable and the tooltip can reveal on keyboard focus (AC-11). Spec FR-2 + AC-1 patched mid-flight during plan-gen cycle 2 to lock the asChild `data-testid` rule (caller's testid wins; wrapper does not inject its own). Bundle adds `@radix-ui/react-tooltip` + `@testing-library/user-event` (devDep). **Pre-existing tests touched:** wrapped `create-study-modal.test.tsx` and `studies/[id]/page.test.tsx` renders in `TooltipProvider` since the new wrappers require Radix context. UI vitest **279 passing across 48 files** (was 249 / 45 — +3 new test files at `ui/src/__tests__/{lib/glossary,components/common/{info-tooltip,help-popover}}.test.tsx` covering parity, length bounds, AC-12 no-backend-refs sweep, button semantics, hover/focus/ESC, asChild mode, motion-reduce class, react-markdown safety filter via `vi.mock`). Playwright E2E **8 passing** (was 5 — +3 new tests in `studies.spec.ts` covering modal target trigger + study-detail FR-7/FR-8 inventory + hover/ESC interaction). **Two CI fix cycles** before green — first surfaced a wrong `data-testid` reference (`create-study-button` vs `open-create-study`); second resolved trial-row-empty-state flakiness on column-header assertions. Gemini Code Assist: 2 Medium findings — accepted `type="button"` on the aria-disabled Open PR button (commit `227c37e`, defensive against accidental form submission); rejected `TooltipContent.displayName` with cited counter-evidence (no other shadcn primitive in this codebase sets `displayName`; named function expressions inside `React.forwardRef` carry implicit `Function.name`). Final GPT-5.5 review: 1 Medium accepted-framing-but-deferred — the E2E gap for the 7 digest-panel triggers + AC-11 disabled-button requires a completed-study-with-digest seed helper that doesn't exist; captured as `infra_e2e_seed_completed_study/idea.md` (component-level coverage IS in place via `info-tooltip.test.tsx` asChild case + the `studies/[id]/page.test.tsx` integration test against a mocked completed study). Spec converged at **GPT-5.5 cycle 3** (24 findings, 23 accepted + 1 rejected with cited counter-evidence about two structurally different Open PR buttons on two routes); plan converged at **cycle 2** (12 findings, 10 accepted + 1 rejected + 1 spec patch). **Architecture doc update:** `docs/01_architecture/ui-architecture.md` gained a "Contextual help (tooltips and popovers)" section documenting the primitive + wrappers + glossary convention with forward guidance for Phase 2/3 work. **Phases 2 + 3 deferred to MVP2** via new planned-feature folder `feat_contextual_help_mvp2/` (judgments review + calibration + proposals lifecycle; chat composer + cluster registration auth-kind + home-page first-run "start here" panel — the panel layout is the only open product-design question). **Follow-ups filed:** `infra_e2e_seed_completed_study` (cross-subsystem E2E helper), Guide 06 screenshot regen needed post-merge (additive icons; `03-create-study-modal.png` + `04-study-detail.png` stale).