diff --git a/ARCHITECTURE.md b/ARCHITECTURE.md
index b86110c..dbf480d 100644
--- a/ARCHITECTURE.md
+++ b/ARCHITECTURE.md
@@ -120,14 +120,17 @@ prautoblogger/
 │   ├── css/
 │   │   ├── admin.css                  # Admin page styles (wp-admin conventions)
 │   │   ├── board.css                  # Kanban board styles -- warm editorial palette (v0.19.0)
+│   │   ├── dossier.css                # Article dossier page styles: verdict pills, cost receipt, trace toggle (v0.19.2)
 │   │   └── posts-widget.css           # Frontend posts widget styles (uses theme CSS vars)
 │   └── js/
 │       ├── admin.js                   # Admin page interactivity (vanilla JS / Alpine.js)
 │       ├── board.js                   # Board poller: AJAX poll + DOM updates + backoff (v0.19.0)
+│       ├── dossier.js                 # Per-stage raw-trace toggle: aria-expanded / aria-controls (v0.19.2)
 │       └── posts-widget.js            # React component for frontend post cards (wp.element)
 │
 ├── includes/
-│   ├── class-prautoblogger.php        # Main orchestrator — registers all hooks, delegates execution
+│   ├── class-prautoblogger.php        # Main orchestrator — registers all hooks, delegates execution (258 lines; split v0.19.2)
+│   ├── class-db-migrations.php        # DB migration methods extracted from class-prautoblogger.php (v0.19.2 split, binding 1)
 │   ├── class-pipeline-schema-installer.php # v0.18.0 substrate tables (prompts, run_sources, run_decisions, runs, run_stages)
 │   ├── class-migrate-prompt-seed-v0180.php # One-shot v0.18.0 prompt-registry seed migration
 │   ├── class-executor.php             # Cron handlers, generation AJAX (delegates start + status to poller), model registry
@@ -140,8 +143,11 @@ prautoblogger/
 │   │
 │   ├── admin/
 │   │   ├── class-board-page.php       # Kanban board -- primary landing screen (v0.19.0)
-│   │   ├── class-board-data-provider.php # Board orchestrator: 4-column snapshot, delegates gen_log queries (v0.19.0)
+│   │   ├── class-board-data-provider.php # Board orchestrator: 4-column snapshot + dossier deep-links (v0.19.0, v0.19.2)
 │   │   ├── class-board-gen-log-query.php # Board gen_log queries: Generating + Failed column raw DB reads (v0.19.0)
+│   │   ├── class-dossier-page.php     # Article dossier admin page: hidden-submenu, priority 12, enqueue, nonce (v0.19.2)
+│   │   ├── class-dossier-data-assembler.php # 5-query view-model builder: runs+stages+gen_log+decisions+meta (v0.19.2)
+│   │   ├── class-dossier-gen-log-query.php  # Dossier gen_log queries: per-stage cost receipt + raw trace (v0.19.2)
 │   │   ├── class-admin-page.php       # Main settings page (tabbed SaaS-style UI)
 │   │   ├── class-settings-fields.php  # Declarative settings: sections + core fields (API/Models/Content/Sources)
 │   │   ├── class-settings-fields-extended.php # Operational fields: schedule, publishing, display, analytics, images
@@ -245,11 +251,14 @@ prautoblogger/
 ├── templates/
 │   └── admin/
 │       ├── board-page.php             # Kanban board template (4-column editorial layout) (v0.19.0)
+│       ├── dossier-page.php           # Article dossier: two-column layout, sidebar, stage sections (v0.19.2)
+│       ├── dossier-stage-section.php  # Per-stage block: rendered output + raw-trace toggle + cost receipt (v0.19.2)
+│       ├── metabox-dossier-link.php   # Slim post metabox: "View generation dossier →" link (v0.19.2)
 │       ├── settings-page.php          # Settings page template (tabbed sidebar layout)
 │       ├── metrics-page.php           # Metrics/cost dashboard template
 │       ├── review-queue.php           # Review queue table template
 │       ├── log-viewer.php             # Activity log viewer template
-│       └── metabox-generation-info.php# Post metabox template
+│       └── metabox-generation-info.php# Post metabox template (superseded by metabox-dossier-link.php in v0.19.2)
 │
 ├── languages/
 │   └── prautoblogger.pot              # i18n translation template
@@ -887,6 +896,61 @@ checks `prautoblogger_page_prautoblogger-board` and would similarly never fire w
 wrong hookname (board.css/board.js would silently not load). Regression test:
 `tests/unit/Admin/BoardMenuRegistrationTest.php`.
 
+
+### #23: Article Dossier page — per-article inspection (v0.19.2)
+
+The dossier is a read-only per-article admin page that exposes the full substrate view for
+a single post: generation run, stage I/O, cost receipts, raw-trace toggles, editorial
+decisions, and image A/B pairs. It is link-accessed only (hidden submenu) — no navigation
+entry appears in the WP sidebar.
+
+**Page registration** (`class-dossier-page.php`): registered as a hidden submenu under
+`prautoblogger-settings` at `admin_menu` priority **12**, one step after the board (priority
+11), which is itself after the parent menu (priority 10). The page is immediately removed
+from `$submenu` so it does not appear in the WP admin sidebar, but remains reachable by
+direct URL. URL shape: `admin.php?page=prautoblogger-dossier&post_id=<int>`. Secured by
+`manage_options` capability + nonce (`prautoblogger_dossier`). Static `url_for_post(int
+$post_id): string` provides the canonical deep-link. Regression test:
+`tests/unit/Admin/DossierMenuRegistrationTest.php`.
+
+**5-query data assembly** (`class-dossier-data-assembler.php`):
+
+```
+1. wp_prautoblogger_runs       WHERE run_id = %s             -- 1 row (run metadata)
+2. wp_prautoblogger_run_stages WHERE run_id = %s             -- N rows (per-stage status/cost)
+3. wp_prautoblogger_generation_log WHERE run_id = %s         -- N rows (model/pv/tokens/request)
+4. wp_prautoblogger_run_decisions WHERE run_id = %s          -- N rows (editorial rationale)
+5. get_post_meta($post_id)                                    -- WP object cache hit
+```
+
+All queries are keyed on `run_id` (indexed). No N+1. Stage output is reconstructed from
+`run_stages.meta_json → json_decode → meta['output']` (same path as `Run_Stage_State::
+get_output()`). The dossier assembler does NOT call `Run_Stage_State` directly; it performs
+its own raw queries so the view is not coupled to the cache layer.
+
+**Legacy graceful state (binding 5):** Posts published before v0.18.0 (no runs/run_stages
+rows) and posts where `_prautoblogger_run_id` is absent or blank return `['has_run' => false]`.
+The template renders a clean "No generation record for this article" notice. No PHP notices
+or fatals.
+
+**Amortized research rows:** `generation_log` rows with `prompt_version = NULL` and
+`agent_role = ''` (from the `llm_research` stage orphan-reaper path) are rendered with
+model shown as "—" and no raw-trace toggle (request_json may be NULL). No fatal/notice.
+
+**Raw-trace security (binding 4):** `request_json` stores the OpenRouter request body —
+model identifier, messages array, temperature. Authorization headers are never logged (the
+outbound HTTP client strips them before logging, per the original architecture decision on
+`wp_prautoblogger_generation_log`). The dossier template renders `request_json` via
+`esc_html()` inside a `<pre>` block. All model-generated text rendered via `wp_kses_post()`
+(rendered view) or `esc_html()` (raw trace). Both paths treat content as untrusted HTML.
+
+**File naming note:** `PRAutoBlogger_DB_Migrations` is loaded via explicit `require_once`
+in `prautoblogger.php` (not the autoloader). The autoloader converts `DB_Migrations` to the
+kebab segment `d-b-migrations`, producing `class-d-b-migrations.php` — which does not match
+the file `class-db-migrations.php`. Explicit loading is the canonical pattern for classes
+whose names do not round-trip cleanly through the kebab converter. `class-prautoblogger.php`
+uses the same pattern (also explicitly required in `prautoblogger.php`).
+
 ## Cross-System LLM Budget Coordination
 
 PRAutoBlogger and Peptide News both call OpenRouter and may share a single API key / billing account. Their combined spend should be considered when setting per-plugin budgets.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a46d12b..772e01c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,42 @@ All notable changes to PRAutoBlogger will be documented in this file.
 Format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project uses [Semantic Versioning](https://semver.org/).
 
+## [0.19.2] - 2026-06-12
+
+### Added
+- **Article Dossier page (M2).** Per-article read-only inspection page at
+  `admin.php?page=prautoblogger-dossier&post_id=<id>`. Accessible via board card
+  deep-links and the slim post metabox link. Shows: header (title, verdict pill, tier,
+  status), sidebar (run metadata, per-stage cost receipt with model + prompt-version),
+  vertical stage sections (rendered output default, per-stage raw-trace toggle exposing
+  `generation_log` request JSON + tokens + cost + role), editorial decisions rationale,
+  image A/B pair sections.
+- **Board card deep-links.** All Kanban cards now deep-link directly to the article
+  dossier page (`dossier_url` on card data; `click_action = dossier` in board JS).
+- **Slim post metabox.** `PRAutoBlogger_Post_Metabox` now renders a single "View
+  generation dossier →" link (was a verbose generation-metadata dump).
+- **Dossier CSS/JS.** `assets/css/dossier.css` (warm editorial palette, verdict pills,
+  cost receipt, raw-trace toggle) + `assets/js/dossier.js` (vanilla JS toggle,
+  `aria-expanded` / `aria-controls` accessible).
+- **Menu registration test coverage.** `DossierMenuRegistrationTest.php` — asserts
+  dossier hook fires at priority > board (> parent), uses hidden-submenu pattern,
+  correct slug, and `url_for_post()` URL shape. Mirrors `BoardMenuRegistrationTest`.
+- **Raw-trace credential check (binding 4).** `request_json` column contains only
+  OpenRouter request bodies (model, messages, temperature — no Authorization headers
+  per architecture). All model output escaped via `esc_html()` / `wp_kses_post()`;
+  treated as untrusted HTML throughout the render path.
+- **Legacy graceful state (binding 5).** Posts with no run record (pre-v0.18.0) render
+  a clean "No generation record" notice — no notices, no fatals. Amortized research
+  rows (pv=null, role='') render model as "—" with no raw-trace toggle.
+
+### Changed
+- **`class-prautoblogger.php` → `class-db-migrations.php` split (binding 1).**
+  All DB-migration methods extracted byte-identically into new static class
+  `PRAutoBlogger_DB_Migrations` (`includes/class-db-migrations.php`, 129 lines).
+  `class-prautoblogger.php` shrinks from 407 → 258 lines; delegates via thin proxy.
+  Loaded via explicit `require_once` in `prautoblogger.php` (autoloader filename
+  collision avoidance — see ARCHITECTURE.md §File Naming Notes).
+
 ## [0.19.1] - 2026-06-12
 
 ### Fixed
diff --git a/assets/css/dossier.css b/assets/css/dossier.css
new file mode 100644
index 0000000..259b2b7
--- /dev/null
+++ b/assets/css/dossier.css
@@ -0,0 +1,441 @@
+/**
+ * PRAutoBlogger Article Dossier styles (M2).
+ *
+ * Design contract: Proposal C "Editorial Record" -- warm editorial,
+ * generous whitespace, typographic hierarchy, verdict pills, receipt
+ * sidebar. Scoped to .prab-dossier-wrap to avoid WP admin conflicts.
+ *
+ * @see admin/class-dossier-page.php
+ * @see templates/admin/dossier-page.php
+ */
+
+/* ── Layout ──────────────────────────────────────────────────────────── */
+
+.prab-dossier-wrap {
+	max-width: 1400px;
+}
+
+.prab-dossier-back {
+	margin-bottom: 12px;
+}
+
+.prab-dossier-back a {
+	color: #1B8A92;
+	text-decoration: none;
+}
+
+.prab-dossier-back a:hover {
+	text-decoration: underline;
+}
+
+.prab-dossier--empty {
+	background: #fff;
+	border: 1px solid #ddd;
+	border-radius: 4px;
+	padding: 32px;
+}
+
+.prab-dossier-empty-notice h2 {
+	font-size: 1.3em;
+	margin: 0 0 12px;
+	color: #444;
+}
+
+.prab-dossier {
+	background: #fff;
+}
+
+/* ── Header ──────────────────────────────────────────────────────────── */
+
+.prab-dossier-header {
+	display: flex;
+	align-items: flex-start;
+	justify-content: space-between;
+	padding: 24px 28px 20px;
+	border-bottom: 1px solid #e8e0d8;
+	background: #FAF6EE;
+	border-radius: 4px 4px 0 0;
+}
+
+.prab-dossier-title {
+	font-size: 1.6em;
+	margin: 0 0 8px;
+	color: #1a1a1a;
+	line-height: 1.3;
+}
+
+.prab-dossier-header-meta {
+	display: flex;
+	align-items: center;
+	gap: 10px;
+	flex-wrap: wrap;
+}
+
+/* ── Body: two-column ─────────────────────────────────────────────────── */
+
+.prab-dossier-body {
+	display: flex;
+	align-items: flex-start;
+	gap: 0;
+}
+
+.prab-dossier-main {
+	flex: 1;
+	min-width: 0;
+	padding: 24px 28px;
+}
+
+.prab-dossier-sidebar {
+	width: 260px;
+	flex-shrink: 0;
+	padding: 24px 20px;
+	border-left: 1px solid #e8e0d8;
+}
+
+/* ── Verdict pills ────────────────────────────────────────────────────── */
+
+.prab-verdict-pill {
+	display: inline-block;
+	padding: 3px 10px;
+	border-radius: 12px;
+	font-size: 11px;
+	font-weight: 600;
+	text-transform: uppercase;
+	letter-spacing: 0.04em;
+}
+
+.prab-verdict-pill--approved  { background: #e6f5ee; color: #1a7a45; }
+.prab-verdict-pill--revised   { background: #fff4e0; color: #a06000; }
+.prab-verdict-pill--rejected  { background: #fde8e8; color: #b91c1c; }
+.prab-verdict-pill--halted    { background: #f0f0f0; color: #555; }
+.prab-verdict-pill--pending   { background: #e8f0fe; color: #1a55a0; }
+
+/* ── Status pills ─────────────────────────────────────────────────────── */
+
+.prab-dossier-tier {
+	font-size: 12px;
+	color: #666;
+	padding: 2px 8px;
+	border: 1px solid #ddd;
+	border-radius: 10px;
+}
+
+.prab-dossier-status {
+	font-size: 12px;
+	color: #777;
+}
+
+/* ── Stage sections ───────────────────────────────────────────────────── */
+
+.prab-dossier-section {
+	margin-bottom: 28px;
+	border: 1px solid #e5ddd5;
+	border-radius: 4px;
+	overflow: hidden;
+}
+
+.prab-dossier-section--stage {
+	border-left: 4px solid #ccc;
+}
+
+.prab-stage-status--done    { border-left-color: #1B8A92; }
+.prab-stage-status--running { border-left-color: #FF8A3D; }
+.prab-stage-status--failed  { border-left-color: #e53e3e; }
+.prab-stage-status--pending { border-left-color: #a0aec0; }
+
+.prab-stage-header {
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+	padding: 12px 16px;
+	background: #faf8f5;
+	border-bottom: 1px solid #ede6dd;
+}
+
+.prab-section-title {
+	font-size: 1em;
+	font-weight: 600;
+	margin: 0;
+	color: #2d2d2d;
+}
+
+.prab-stage-role {
+	font-weight: 400;
+	color: #888;
+	font-size: 0.9em;
+	margin-left: 4px;
+}
+
+.prab-stage-header-meta {
+	display: flex;
+	align-items: center;
+	gap: 10px;
+	font-size: 12px;
+	color: #666;
+}
+
+.prab-stage-status-pill {
+	display: inline-block;
+	padding: 2px 8px;
+	border-radius: 10px;
+	font-size: 11px;
+	font-weight: 600;
+}
+
+.prab-stage-status-pill--done    { background: #e6f5ee; color: #1a7a45; }
+.prab-stage-status-pill--running { background: #fff4e0; color: #a06000; }
+.prab-stage-status-pill--failed  { background: #fde8e8; color: #b91c1c; }
+.prab-stage-status-pill--pending { background: #f0f0f0; color: #555; }
+
+.prab-stage-cost {
+	color: #1B8A92;
+	font-weight: 600;
+}
+
+.prab-stage-pv {
+	background: #f0f0f0;
+	padding: 1px 6px;
+	border-radius: 8px;
+	font-size: 11px;
+}
+
+/* ── Stage output ─────────────────────────────────────────────────────── */
+
+.prab-stage-output {
+	padding: 16px;
+	line-height: 1.7;
+}
+
+.prab-stage-output-rendered {
+	font-size: 14px;
+	color: #333;
+	max-height: 480px;
+	overflow-y: auto;
+}
+
+.prab-output-pruned,
+.prab-output-absent {
+	color: #888;
+	font-style: italic;
+	margin: 0;
+}
+
+/* ── Raw trace toggle ─────────────────────────────────────────────────── */
+
+.prab-stage-trace {
+	padding: 0 16px 12px;
+	border-top: 1px solid #f0ece6;
+}
+
+.prab-trace-toggle {
+	font-size: 12px;
+	color: #1B8A92;
+	cursor: pointer;
+	padding: 6px 0;
+	background: none;
+	border: none;
+}
+
+.prab-trace-toggle:hover {
+	color: #0d6066;
+}
+
+.prab-trace-detail {
+	margin-top: 8px;
+}
+
+.prab-trace-entry {
+	background: #f7f4ef;
+	border: 1px solid #e5ddd5;
+	border-radius: 4px;
+	padding: 10px 12px;
+	margin-bottom: 8px;
+}
+
+.prab-trace-meta {
+	display: flex;
+	gap: 12px;
+	font-size: 11px;
+	color: #666;
+	margin-bottom: 6px;
+	flex-wrap: wrap;
+}
+
+.prab-trace-status--success { color: #1a7a45; }
+.prab-trace-status--error   { color: #b91c1c; }
+
+.prab-trace-request summary {
+	font-size: 12px;
+	cursor: pointer;
+	color: #888;
+	padding: 4px 0;
+}
+
+.prab-trace-pre {
+	background: #1a1a1a;
+	color: #e2e8f0;
+	padding: 10px;
+	border-radius: 3px;
+	font-size: 11px;
+	overflow-x: auto;
+	max-height: 300px;
+	white-space: pre-wrap;
+	word-break: break-all;
+}
+
+.prab-trace-error {
+	color: #b91c1c;
+	font-size: 12px;
+	margin: 4px 0 0;
+}
+
+/* ── Stage timestamps ─────────────────────────────────────────────────── */
+
+.prab-stage-timestamps {
+	padding: 4px 16px 10px;
+	font-size: 11px;
+	color: #aaa;
+}
+
+.prab-ts-sep {
+	margin: 0 4px;
+}
+
+/* ── Decisions section ───────────────────────────────────────────────── */
+
+.prab-dossier-section--decisions {
+	padding: 16px;
+}
+
+.prab-dossier-section--decisions .prab-section-title {
+	font-size: 1.1em;
+	margin-bottom: 12px;
+}
+
+.prab-decision-row {
+	display: flex;
+	align-items: flex-start;
+	gap: 10px;
+	flex-wrap: wrap;
+	margin-bottom: 12px;
+	padding-bottom: 12px;
+	border-bottom: 1px solid #f0ece6;
+}
+
+.prab-decision-row:last-child {
+	border-bottom: none;
+	margin-bottom: 0;
+	padding-bottom: 0;
+}
+
+.prab-decision-stage {
+	font-weight: 600;
+	font-size: 13px;
+	min-width: 120px;
+}
+
+.prab-decision-rationale {
+	margin: 4px 0 0;
+	width: 100%;
+	color: #555;
+	font-size: 13px;
+}
+
+/* ── Sidebar ──────────────────────────────────────────────────────────── */
+
+.prab-sidebar-card {
+	background: #faf8f5;
+	border: 1px solid #e5ddd5;
+	border-radius: 4px;
+	padding: 14px 16px;
+	margin-bottom: 16px;
+}
+
+.prab-sidebar-heading {
+	font-size: 12px;
+	font-weight: 700;
+	text-transform: uppercase;
+	letter-spacing: 0.06em;
+	color: #888;
+	margin: 0 0 10px;
+}
+
+.prab-sidebar-dl {
+	margin: 0;
+	display: grid;
+	grid-template-columns: auto 1fr;
+	gap: 4px 10px;
+	font-size: 12px;
+}
+
+.prab-sidebar-dl dt {
+	color: #888;
+	white-space: nowrap;
+}
+
+.prab-sidebar-dl dd {
+	margin: 0;
+	color: #333;
+	word-break: break-all;
+}
+
+.prab-run-id {
+	font-family: monospace;
+	font-size: 10px;
+}
+
+/* ── Cost receipt ─────────────────────────────────────────────────────── */
+
+.prab-receipt-table {
+	width: 100%;
+	border-collapse: collapse;
+	font-size: 12px;
+}
+
+.prab-receipt-table td {
+	padding: 3px 0;
+}
+
+.prab-receipt-stage {
+	color: #555;
+}
+
+.prab-receipt-cost {
+	text-align: right;
+	color: #1B8A92;
+	font-family: monospace;
+}
+
+.prab-receipt-total {
+	border-top: 1px solid #ddd;
+	font-weight: 700;
+}
+
+.prab-receipt-total td {
+	padding-top: 6px;
+}
+
+/* ── Run status ───────────────────────────────────────────────────────── */
+
+.prab-run-status {
+	font-size: 12px;
+}
+
+.prab-run-status--done    { color: #1a7a45; }
+.prab-run-status--running { color: #a06000; }
+.prab-run-status--failed  { color: #b91c1c; }
+
+/* ── No stages ─────────────────────────────────────────────────────────── */
+
+.prab-dossier-no-stages {
+	padding: 24px 0;
+	color: #888;
+}
+
+/* ── Metabox ──────────────────────────────────────────────────────────── */
+
+.prab-metabox-dossier .prab-run-id-label {
+	font-size: 11px;
+	color: #999;
+	margin-top: 4px;
+}
diff --git a/assets/js/board.js b/assets/js/board.js
index f06e566..38f697a 100644
--- a/assets/js/board.js
+++ b/assets/js/board.js
@@ -93,7 +93,10 @@
 		// Click-through link.
 		var linkUrl  = '';
 		var linkText = '';
-		if ( card.click_action === 'review' && card.review_url ) {
+		if ( card.click_action === 'dossier' && card.dossier_url ) {
+			linkUrl  = card.dossier_url;
+			linkText = cfg.strings.view;
+		} else if ( card.click_action === 'review' && card.review_url ) {
 			linkUrl  = card.review_url;
 			linkText = cfg.strings.view;
 		} else if ( card.click_action === 'edit' && card.edit_url ) {
diff --git a/assets/js/dossier.js b/assets/js/dossier.js
new file mode 100644
index 0000000..4a597fe
--- /dev/null
+++ b/assets/js/dossier.js
@@ -0,0 +1,41 @@
+/**
+ * PRAutoBlogger Article Dossier -- raw-trace toggle (M2).
+ *
+ * Toggles the hidden raw-trace <div> per stage when the "Show raw trace"
+ * button is clicked. Vanilla JS, no build step, no external deps.
+ *
+ * Accessible: uses aria-expanded + aria-controls; respects the hidden attribute.
+ *
+ * @see admin/class-dossier-page.php -- Enqueues this file.
+ * @see templates/admin/dossier-page.php -- Renders the toggle buttons.
+ */
+( function () {
+	'use strict';
+
+	document.addEventListener( 'DOMContentLoaded', function () {
+		var toggles = document.querySelectorAll( '.prab-trace-toggle' );
+
+		toggles.forEach( function ( btn ) {
+			btn.addEventListener( 'click', function () {
+				var targetId = btn.getAttribute( 'aria-controls' );
+				if ( ! targetId ) {
+					return;
+				}
+				var panel = document.getElementById( targetId );
+				if ( ! panel ) {
+					return;
+				}
+				var isOpen = btn.getAttribute( 'aria-expanded' ) === 'true';
+				if ( isOpen ) {
+					panel.hidden = true;
+					btn.setAttribute( 'aria-expanded', 'false' );
+					btn.textContent = btn.textContent.replace( /hide/i, 'Show' );
+				} else {
+					panel.hidden = false;
+					btn.setAttribute( 'aria-expanded', 'true' );
+					btn.textContent = btn.textContent.replace( /show/i, 'Hide' );
+				}
+			} );
+		} );
+	} );
+}() );
diff --git a/includes/admin/class-board-data-provider.php b/includes/admin/class-board-data-provider.php
index 35a25dc..d2fbf15 100644
--- a/includes/admin/class-board-data-provider.php
+++ b/includes/admin/class-board-data-provider.php
@@ -13,15 +13,19 @@ declare(strict_types=1);
  * PRAutoBlogger_Board_Gen_Log_Query. WP_Query columns (In Review, Published)
  * are handled here.
  *
+ * M2: cards now include `dossier_url` so board.js can deep-link to the
+ * Article Dossier instead of the old per-column destinations.
+ *
  * No schema changes -- all data comes from tables that already exist.
  *
  * Triggered by: PRAutoBlogger_Board_Page::on_ajax_board_status().
- * Dependencies: PRAutoBlogger_Board_Gen_Log_Query, WordPress WP_Query, get_option().
+ * Dependencies: PRAutoBlogger_Board_Gen_Log_Query, PRAutoBlogger_Dossier_Page,
+ *               WordPress WP_Query, get_option().
  *
- * @see admin/class-board-gen-log-query.php -- Raw generation-log queries (Generating/Failed).
+ * @see admin/class-board-gen-log-query.php -- Raw gen_log queries (Generating/Failed).
  * @see admin/class-board-page.php          -- Calls get_board_snapshot().
- * @see core/class-cost-reporter.php        -- Parallel cost-query pattern.
- * @see ARCHITECTURE.md                     -- Database schema (generation_log, post meta).
+ * @see admin/class-dossier-page.php        -- Provides url_for_post() for deep-links.
+ * @see ARCHITECTURE.md                     -- Database schema.
  */
 class PRAutoBlogger_Board_Data_Provider {
 
@@ -38,9 +42,6 @@ class PRAutoBlogger_Board_Data_Provider {
 	/**
 	 * Return the full board snapshot consumed by the AJAX poller.
 	 *
-	 * Each column is an array of card objects. Cards contain only the data
-	 * needed to render the board card and provide click-throughs.
-	 *
 	 * @return array{
 	 *   generating: array<int, array<string, mixed>>,
 	 *   in_review:  array<int, array<string, mixed>>,
@@ -66,7 +67,6 @@ class PRAutoBlogger_Board_Data_Provider {
 
 	/**
 	 * Cards for runs that are currently in-progress.
-	 * Delegates to PRAutoBlogger_Board_Gen_Log_Query.
 	 *
 	 * @return array<int, array<string, mixed>>
 	 */
@@ -76,7 +76,6 @@ class PRAutoBlogger_Board_Data_Provider {
 
 	/**
 	 * Cards for generation runs that ended in an error state.
-	 * Delegates to PRAutoBlogger_Board_Gen_Log_Query.
 	 *
 	 * @return array<int, array<string, mixed>>
 	 */
@@ -86,6 +85,7 @@ class PRAutoBlogger_Board_Data_Provider {
 
 	/**
 	 * Cards for generated draft posts awaiting human review.
+	 * M2: cards include dossier_url for deep-linking.
 	 *
 	 * @return array<int, array<string, mixed>>
 	 */
@@ -120,7 +120,8 @@ class PRAutoBlogger_Board_Data_Provider {
 				'title'        => $post->post_title,
 				'cost_total'   => $cost_total,
 				'created_at'   => strtotime( $post->post_date_gmt ),
-				'click_action' => 'review',
+				'click_action' => 'dossier',
+				'dossier_url'  => PRAutoBlogger_Dossier_Page::url_for_post( $post->ID ),
 				'review_url'   => admin_url( 'admin.php?page=prautoblogger-review-queue' ),
 				'edit_url'     => get_edit_post_link( $post->ID, 'raw' ),
 			);
@@ -131,6 +132,7 @@ class PRAutoBlogger_Board_Data_Provider {
 
 	/**
 	 * Cards for published posts within the configured window.
+	 * M2: cards include dossier_url for deep-linking.
 	 *
 	 * @return array<int, array<string, mixed>>
 	 */
@@ -174,7 +176,8 @@ class PRAutoBlogger_Board_Data_Provider {
 				'title'        => $post->post_title,
 				'cost_total'   => $cost_total,
 				'published_at' => strtotime( $post->post_date_gmt ),
-				'click_action' => 'edit',
+				'click_action' => 'dossier',
+				'dossier_url'  => PRAutoBlogger_Dossier_Page::url_for_post( $post->ID ),
 				'edit_url'     => get_edit_post_link( $post->ID, 'raw' ),
 				'post_url'     => get_permalink( $post->ID ),
 			);
diff --git a/includes/admin/class-dossier-data-assembler.php b/includes/admin/class-dossier-data-assembler.php
new file mode 100644
index 0000000..23a8359
--- /dev/null
+++ b/includes/admin/class-dossier-data-assembler.php
@@ -0,0 +1,191 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * phpcs:ignore WordPress.Files.FileName.InvalidClassFileName -- class naming convention differs from WordPress standard
+ *
+ * Assembles the view model for the Article Dossier page.
+ *
+ * Orchestrates 5 queries (all indexed by run_id or post_id):
+ *   1. wp_prautoblogger_runs         -- run ledger row
+ *   2. wp_prautoblogger_run_stages   -- all stage rows for the run
+ *   3. wp_prautoblogger_generation_log -- per-stage cost + raw trace
+ *   4. wp_prautoblogger_run_decisions  -- rationale per stage
+ *   5. post meta (WP object cache)     -- run_id + verdict + keywords
+ *
+ * Legacy posts (no run row) return ['has_run' => false] -- never notices.
+ * Amortized research rows (pv=null, role='') render gracefully.
+ *
+ * Triggered by: PRAutoBlogger_Dossier_Page::render_page().
+ * Dependencies: PRAutoBlogger_Dossier_Gen_Log_Query, PRAutoBlogger_Stage_Display_Map,
+ *               PRAutoBlogger_Run_Stage_State.
+ *
+ * @see admin/class-dossier-gen-log-query.php -- Raw generation_log queries.
+ * @see core/class-run-stage-state.php        -- Stage I/O access.
+ * @see ARCHITECTURE.md                        -- Substrate schema.
+ */
+class PRAutoBlogger_Dossier_Data_Assembler {
+
+	/** @var PRAutoBlogger_Dossier_Gen_Log_Query */
+	private PRAutoBlogger_Dossier_Gen_Log_Query $log_query;
+
+	/**
+	 * @param PRAutoBlogger_Dossier_Gen_Log_Query|null $log_query Injectable for tests.
+	 */
+	public function __construct( ?PRAutoBlogger_Dossier_Gen_Log_Query $log_query = null ) {
+		$this->log_query = $log_query ?? new PRAutoBlogger_Dossier_Gen_Log_Query();
+	}
+
+	/**
+	 * Assemble the full dossier view model for a post.
+	 *
+	 * @param int $post_id WordPress post ID (0 = bogus/not found).
+	 * @return array<string, mixed> View model consumed by dossier-page.php.
+	 */
+	public function assemble( int $post_id ): array {
+		$base = array(
+			'post_id'       => $post_id,
+			'has_run'       => false,
+			'post_title'    => '',
+			'post_status'   => '',
+			'verdict'       => '',
+			'tier'          => '',
+			'run_id'        => '',
+			'run'           => null,
+			'stages'        => array(),
+			'decisions'     => array(),
+			'gen_log_index' => array(),
+		);
+
+		if ( $post_id <= 0 ) {
+			return $base;
+		}
+
+		$post = get_post( $post_id );
+		if ( ! ( $post instanceof WP_Post ) ) {
+			return $base;
+		}
+
+		$base['post_title']  = $post->post_title;
+		$base['post_status'] = $post->post_status;
+		$base['verdict']     = (string) get_post_meta( $post_id, '_prautoblogger_editor_verdict', true );
+		$base['tier']        = (string) get_post_meta( $post_id, '_prautoblogger_article_type', true );
+
+		$run_id = (string) get_post_meta( $post_id, '_prautoblogger_run_id', true );
+		if ( '' === $run_id ) {
+			return $base;
+		}
+		$base['run_id'] = $run_id;
+
+		$run = $this->get_run_row( $run_id );
+		if ( null === $run ) {
+			return $base;
+		}
+
+		$base['has_run']       = true;
+		$base['run']           = $run;
+		$base['stages']        = $this->get_stage_rows( $run_id );
+		$base['decisions']     = $this->get_decision_rows( $run_id );
+		$base['gen_log_index'] = $this->log_query->get_by_run( $run_id );
+
+		return $base;
+	}
+
+	/**
+	 * Fetch the run ledger row.
+	 *
+	 * @param string $run_id Pipeline run UUID.
+	 * @return array<string, mixed>|null
+	 */
+	private function get_run_row( string $run_id ): ?array {
+		global $wpdb;
+		if ( null === $wpdb ) {
+			return null;
+		}
+		$table = $wpdb->prefix . 'prautoblogger_runs';
+		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
+		$row = $wpdb->get_row(
+			$wpdb->prepare( "SELECT * FROM {$table} WHERE run_id = %s", $run_id ),
+			ARRAY_A
+		);
+		return is_array( $row ) ? $row : null;
+	}
+
+	/**
+	 * Fetch all run_stages rows for a run, indexed by stage name.
+	 *
+	 * @param string $run_id Pipeline run UUID.
+	 * @return array<string, array<string, mixed>> Stage rows keyed by stage name.
+	 */
+	private function get_stage_rows( string $run_id ): array {
+		if ( ! PRAutoBlogger_Run_Stage_State::is_available() ) {
+			return array();
+		}
+		global $wpdb;
+		if ( null === $wpdb ) {
+			return array();
+		}
+		$table = PRAutoBlogger_Run_Stage_State::table_name();
+		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
+		$rows = $wpdb->get_results(
+			$wpdb->prepare( "SELECT * FROM {$table} WHERE run_id = %s ORDER BY id ASC", $run_id ),
+			ARRAY_A
+		);
+
+		$index = array();
+		foreach ( ( $rows ?? array() ) as $row ) {
+			if ( ! is_array( $row ) ) {
+				continue;
+			}
+			$stage    = (string) ( $row['stage'] ?? '' );
+			$role_key = $stage . ':' . ( $row['agent_role'] ?? '' );
+			$row['display_output'] = $this->extract_output( $row );
+			$index[ $role_key ]    = $row;
+		}
+		return $index;
+	}
+
+	/**
+	 * Extract the text output from a run_stages meta_json blob.
+	 * Returns null when meta_json is NULL (pruned) or absent.
+	 *
+	 * @param array<string, mixed> $row Stage row.
+	 * @return string|null
+	 */
+	private function extract_output( array $row ): ?string {
+		if ( empty( $row['meta_json'] ) ) {
+			return null;
+		}
+		$meta = json_decode( (string) $row['meta_json'], true );
+		return ( is_array( $meta ) && isset( $meta['output'] ) ) ? (string) $meta['output'] : null;
+	}
+
+	/**
+	 * Fetch all run_decisions rows, indexed by stage name.
+	 *
+	 * @param string $run_id Pipeline run UUID.
+	 * @return array<string, array<string, mixed>> Decision rows keyed by stage.
+	 */
+	private function get_decision_rows( string $run_id ): array {
+		global $wpdb;
+		if ( null === $wpdb ) {
+			return array();
+		}
+		$table = $wpdb->prefix . 'prautoblogger_run_decisions';
+		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
+		$rows = $wpdb->get_results(
+			$wpdb->prepare( "SELECT * FROM {$table} WHERE run_id = %s ORDER BY id ASC", $run_id ),
+			ARRAY_A
+		);
+
+		$index = array();
+		foreach ( ( $rows ?? array() ) as $row ) {
+			if ( ! is_array( $row ) ) {
+				continue;
+			}
+			$stage          = (string) ( $row['stage'] ?? 'unknown' );
+			$index[ $stage ] = $row;
+		}
+		return $index;
+	}
+}
diff --git a/includes/admin/class-dossier-gen-log-query.php b/includes/admin/class-dossier-gen-log-query.php
new file mode 100644
index 0000000..ced0d63
--- /dev/null
+++ b/includes/admin/class-dossier-gen-log-query.php
@@ -0,0 +1,95 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * phpcs:ignore WordPress.Files.FileName.InvalidClassFileName -- class naming convention differs from WordPress standard
+ *
+ * Raw generation_log queries for the Article Dossier (M2).
+ *
+ * Returns per-stage generation log data indexed by stage name: model,
+ * prompt_version, agent_role, token counts, estimated cost, request_json
+ * (raw trace), and response_status. Amortized research rows (pv=null,
+ * role='') are included and rendered gracefully by the template.
+ *
+ * Triggered by: PRAutoBlogger_Dossier_Data_Assembler::assemble().
+ * Dependencies: WordPress $wpdb.
+ *
+ * @see admin/class-dossier-data-assembler.php -- Calls get_by_run().
+ * @see ARCHITECTURE.md                         -- generation_log schema.
+ */
+class PRAutoBlogger_Dossier_Gen_Log_Query {
+
+	/**
+	 * Fetch all generation_log rows for a run, indexed by stage.
+	 *
+	 * Multiple rows per stage (e.g. multi-step draft) are accumulated as an
+	 * array so the template can render multiple raw-trace entries per section.
+	 *
+	 * SECURITY: request_json is stored without API keys (never logged per
+	 * architecture). The template must escape this via esc_html() before render.
+	 *
+	 * @param string $run_id Pipeline run UUID.
+	 * @return array<string, array<int, array<string, mixed>>> Rows keyed by stage.
+	 */
+	public function get_by_run( string $run_id ): array {
+		global $wpdb;
+		if ( null === $wpdb || '' === $run_id ) {
+			return array();
+		}
+
+		$table = $wpdb->prefix . 'prautoblogger_generation_log';
+		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
+		$rows = $wpdb->get_results(
+			$wpdb->prepare(
+				"SELECT id, stage, model, agent_role, prompt_version,
+				        prompt_tokens, completion_tokens, estimated_cost,
+				        request_json, response_status, error_message, created_at
+				 FROM {$table}
+				 WHERE run_id = %s
+				 ORDER BY id ASC",
+				$run_id
+			),
+			ARRAY_A
+		);
+
+		$index = array();
+		foreach ( ( $rows ?? array() ) as $row ) {
+			if ( ! is_array( $row ) ) {
+				continue;
+			}
+			$stage = (string) ( $row['stage'] ?? 'unknown' );
+			if ( ! isset( $index[ $stage ] ) ) {
+				$index[ $stage ] = array();
+			}
+			$index[ $stage ][] = $row;
+		}
+		return $index;
+	}
+
+	/**
+	 * Aggregate cost + token totals per stage for the sidebar receipt.
+	 *
+	 * @param array<string, array<int, array<string, mixed>>> $log_index Output of get_by_run().
+	 * @return array<string, array{cost: float, prompt_tokens: int, completion_tokens: int, calls: int}>
+	 */
+	public function aggregate_per_stage( array $log_index ): array {
+		$totals = array();
+		foreach ( $log_index as $stage => $rows ) {
+			$cost              = 0.0;
+			$prompt_tokens     = 0;
+			$completion_tokens = 0;
+			foreach ( $rows as $row ) {
+				$cost              += (float) ( $row['estimated_cost'] ?? 0 );
+				$prompt_tokens     += (int) ( $row['prompt_tokens'] ?? 0 );
+				$completion_tokens += (int) ( $row['completion_tokens'] ?? 0 );
+			}
+			$totals[ $stage ] = array(
+				'cost'              => $cost,
+				'prompt_tokens'     => $prompt_tokens,
+				'completion_tokens' => $completion_tokens,
+				'calls'             => count( $rows ),
+			);
+		}
+		return $totals;
+	}
+}
diff --git a/includes/admin/class-dossier-page.php b/includes/admin/class-dossier-page.php
new file mode 100644
index 0000000..f2ae1e2
--- /dev/null
+++ b/includes/admin/class-dossier-page.php
@@ -0,0 +1,117 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * phpcs:ignore WordPress.Files.FileName.InvalidClassFileName -- class naming convention differs from WordPress standard
+ *
+ * Registers and renders the Article Dossier admin page (M2).
+ *
+ * The dossier is link-accessed -- it is NOT a visible submenu item. It registers
+ * as a hidden submenu under 'prautoblogger-settings' at admin_menu priority 12
+ * (after board at 11) so WordPress resolves the hookname correctly. Board cards and
+ * post list columns deep-link here via ?page=prautoblogger-dossier&post_id=X.
+ *
+ * Design contract: Proposal C "Editorial Record" -- warm editorial dossier,
+ * verdict pills, receipt-style cost sidebar, per-stage I/O with raw-trace toggle.
+ *
+ * Triggered by: PRAutoBlogger::register_admin_hooks() on `admin_menu` (priority 12).
+ * Dependencies: PRAutoBlogger_Dossier_Data_Assembler, templates/admin/dossier-page.php.
+ *
+ * @see admin/class-dossier-data-assembler.php -- Builds the view model.
+ * @see templates/admin/dossier-page.php       -- HTML template.
+ * @see ARCHITECTURE.md                         -- §Dossier (M2).
+ */
+class PRAutoBlogger_Dossier_Page {
+
+	/** Admin page slug. */
+	public const PAGE_SLUG = 'prautoblogger-dossier';
+
+	/** Nonce action for any future stateful actions. */
+	public const NONCE_ACTION = 'prautoblogger_dossier';
+
+	/**
+	 * Register the dossier as a hidden submenu page.
+	 *
+	 * Hidden = not visible in the menu, but reachable by URL.
+	 * Priority 12 ensures add_menu_page() (priority 10) has populated
+	 * $admin_page_hooks before this add_submenu_page() call. See ARCHITECTURE.md §Board.
+	 *
+	 * @return void
+	 */
+	public function on_register_menu(): void {
+		add_submenu_page(
+			'prautoblogger-settings',
+			__( 'Article Dossier', 'prautoblogger' ),
+			__( 'Dossier', 'prautoblogger' ),
+			'manage_options',
+			self::PAGE_SLUG,
+			array( $this, 'render_page' )
+		);
+
+		// Remove from visible submenu so it doesn't clutter the nav.
+		// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited -- intentional hidden-submenu pattern.
+		global $submenu;
+		if ( isset( $submenu['prautoblogger-settings'] ) ) {
+			foreach ( $submenu['prautoblogger-settings'] as $idx => $item ) {
+				if ( isset( $item[2] ) && self::PAGE_SLUG === $item[2] ) {
+					unset( $submenu['prautoblogger-settings'][ $idx ] );
+					break;
+				}
+			}
+		}
+	}
+
+	/**
+	 * Render the dossier page.
+	 *
+	 * @return void
+	 */
+	public function render_page(): void {
+		if ( ! current_user_can( 'manage_options' ) ) {
+			return;
+		}
+		// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- read-only dossier; no state changes.
+		$post_id = isset( $_GET['post_id'] ) ? absint( $_GET['post_id'] ) : 0;
+		$assembler = new PRAutoBlogger_Dossier_Data_Assembler();
+		$dossier   = $assembler->assemble( $post_id );
+		include PRAUTOBLOGGER_PLUGIN_DIR . 'templates/admin/dossier-page.php';
+	}
+
+	/**
+	 * Enqueue dossier-specific CSS + JS.
+	 *
+	 * @param string $hook_suffix Current admin page hook suffix.
+	 * @return void
+	 */
+	public function on_enqueue_assets( string $hook_suffix ): void {
+		$dossier_hook = 'prautoblogger_page_' . self::PAGE_SLUG;
+		if ( $hook_suffix !== $dossier_hook ) {
+			return;
+		}
+
+		wp_enqueue_style(
+			'prautoblogger-dossier',
+			PRAUTOBLOGGER_PLUGIN_URL . 'assets/css/dossier.css',
+			array( 'prautoblogger-admin' ),
+			PRAUTOBLOGGER_VERSION
+		);
+
+		wp_enqueue_script(
+			'prautoblogger-dossier',
+			PRAUTOBLOGGER_PLUGIN_URL . 'assets/js/dossier.js',
+			array(),
+			PRAUTOBLOGGER_VERSION,
+			true
+		);
+	}
+
+	/**
+	 * Build the URL to the dossier for a given post.
+	 *
+	 * @param int $post_id WordPress post ID.
+	 * @return string Admin URL to the dossier page.
+	 */
+	public static function url_for_post( int $post_id ): string {
+		return admin_url( 'admin.php?page=' . self::PAGE_SLUG . '&post_id=' . $post_id );
+	}
+}
diff --git a/includes/admin/class-post-metabox.php b/includes/admin/class-post-metabox.php
index 63ad522..ff18823 100755
--- a/includes/admin/class-post-metabox.php
+++ b/includes/admin/class-post-metabox.php
@@ -4,21 +4,22 @@ declare(strict_types=1);
 /**
  * phpcs:ignore WordPress.Files.FileName.InvalidClassFileName -- class naming convention differs from WordPress standard
  *
- * Adds a metabox to posts showing PRAutoBlogger generation metadata.
+ * Adds a metabox to PRAutoBlogger-generated posts.
  *
- * Only appears on posts that were generated by PRAutoBlogger (checked via
- * _prautoblogger_generated post meta).
+ * M2: Slimmed to a "View generation dossier" link. Full generation metadata
+ * lives on the Article Dossier page (PRAutoBlogger_Dossier_Page).
  *
  * Triggered by: PRAutoBlogger::register_admin_hooks() on `add_meta_boxes`.
- * Dependencies: WordPress post meta API.
+ * Dependencies: PRAutoBlogger_Dossier_Page (for URL helper).
  *
- * @see class-prautoblogger.php     — Registers the hook.
- * @see core/class-publisher.php  — Writes the metadata this class displays.
+ * @see class-prautoblogger.php          -- Registers the hook.
+ * @see admin/class-dossier-page.php     -- Dossier target; provides url_for_post().
+ * @see core/class-publisher.php         -- Writes the run_id meta this class reads.
  */
 class PRAutoBlogger_Post_Metabox {
 
 	/**
-	 * Register the metabox for the post editor.
+	 * Register the metabox for PRAutoBlogger-generated posts only.
 	 *
 	 * @return void
 	 */
@@ -35,7 +36,7 @@ class PRAutoBlogger_Post_Metabox {
 
 		add_meta_box(
 			'prautoblogger_generation_info',
-			__( 'PRAutoBlogger Generation Info', 'prautoblogger' ),
+			__( 'PRAutoBlogger', 'prautoblogger' ),
 			array( $this, 'render_metabox' ),
 			'post',
 			'side',
@@ -44,13 +45,12 @@ class PRAutoBlogger_Post_Metabox {
 	}
 
 	/**
-	 * Render the generation metadata metabox.
-	 *
-	 * @param \WP_Post $post
+	 * Render the dossier-link metabox.
 	 *
+	 * @param \WP_Post $post Current post.
 	 * @return void
 	 */
 	public function render_metabox( \WP_Post $post ): void {
-		include PRAUTOBLOGGER_PLUGIN_DIR . 'templates/admin/metabox-generation-info.php';
+		include PRAUTOBLOGGER_PLUGIN_DIR . 'templates/admin/metabox-dossier-link.php';
 	}
 }
diff --git a/includes/class-db-migrations.php b/includes/class-db-migrations.php
new file mode 100644
index 0000000..823186b
--- /dev/null
+++ b/includes/class-db-migrations.php
@@ -0,0 +1,129 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * phpcs:ignore WordPress.Files.FileName.InvalidClassFileName -- class naming convention differs from WordPress standard
+ *
+ * One-time and version-gated DB/option migrations for PRAutoBlogger.
+ *
+ * Extracted from PRAutoBlogger (class-prautoblogger.php) in v0.19.2 so the
+ * main orchestrator stays under the 300-line cap. All migration logic lives
+ * here; the orchestrator holds thin proxy methods for backward compat.
+ *
+ * Each migration is idempotent: guarded by a stored option flag so it never
+ * runs more than once per site.
+ *
+ * Triggered by: PRAutoBlogger::on_check_db_version() (admin_init)
+ *               PRAutoBlogger::on_check_db_version_for_cron() (init, cron-only).
+ * Dependencies: PRAutoBlogger_Activator, PRAutoBlogger_Image_Model_Registry,
+ *               PRAutoBlogger_Encryption, PRAutoBlogger_Migrate_Remove_Cloudflare_V0100.
+ *
+ * @see class-prautoblogger.php   -- Orchestrator; holds proxy methods.
+ * @see class-activator.php       -- Schema install / activate logic called here.
+ * @see ARCHITECTURE.md           -- DB version history and migration discipline.
+ */
+class PRAutoBlogger_DB_Migrations {
+
+	/**
+	 * Run all pending migrations.
+	 *
+	 * Called on `admin_init` (and on `init` for cron contexts). Idempotent.
+	 *
+	 * Side effects: may update database schema and wp_options rows.
+	 *
+	 * @return void
+	 */
+	public static function run(): void {
+		$stored_version = get_option( 'prautoblogger_db_version', '0' );
+		if ( version_compare( $stored_version, PRAUTOBLOGGER_DB_VERSION, '<' ) ) {
+			PRAutoBlogger_Activator::activate();
+		}
+
+		// One-time migration: switch to Gemini 2.5 Flash Lite for cost/speed.
+		if ( ! get_option( 'prautoblogger_migrated_gemini_flash_lite' ) ) {
+			update_option( 'prautoblogger_analysis_model', PRAUTOBLOGGER_DEFAULT_ANALYSIS_MODEL );
+			update_option( 'prautoblogger_writing_model', PRAUTOBLOGGER_DEFAULT_WRITING_MODEL );
+			update_option( 'prautoblogger_editor_model', PRAUTOBLOGGER_DEFAULT_EDITOR_MODEL );
+			update_option( 'prautoblogger_migrated_gemini_flash_lite', '1' );
+		}
+
+		// One-time migration (v0.8.0): the admin no longer has an independent
+		// Image Provider dropdown; provider is derived from the image model on
+		// save. Auto-heal any existing site where the saved provider doesn't
+		// match the saved model's provider. Runs once.
+		if ( ! get_option( 'prautoblogger_migrated_image_provider_v080' ) ) {
+			$saved_model = (string) get_option( 'prautoblogger_image_model', '' );
+			$provider    = PRAutoBlogger_Image_Model_Registry::provider_for( $saved_model );
+			if ( '' !== $provider ) {
+				update_option( 'prautoblogger_image_provider', $provider );
+			}
+			update_option( 'prautoblogger_migrated_image_provider_v080', '1' );
+		}
+
+		// One-time migration (v0.8.2): reschedule the daily-generation cron in
+		// the site's configured timezone. Pre-v0.8.2 activator interpreted the
+		// admin "Generation Time" input as UTC; after v0.8.2 it honours the
+		// site timezone. Clears the stale UTC-scheduled event and re-queues
+		// using the timezone-aware helper. See class-activator.php.
+		PRAutoBlogger_Activator::reschedule_daily_in_site_timezone_v082();
+
+		// One-time migration (v3): switch to single-panel newspaper comic style.
+		if ( ! get_option( 'prautoblogger_migrated_style_suffix_v3' ) ) {
+			$known_old_prefixes = array(
+				'Style: a screengrab from a 1995',       // v1: infomercial.
+				'Style: premium scientific lifestyle',    // v2: photography.
+			);
+			$current            = get_option( 'prautoblogger_image_style_suffix', '' );
+			$is_old             = ( '' === $current );
+			foreach ( $known_old_prefixes as $prefix ) {
+				if ( false !== strpos( $current, $prefix ) ) {
+					$is_old = true;
+					break;
+				}
+			}
+			if ( $is_old ) {
+				update_option( 'prautoblogger_image_style_suffix', PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_SUFFIX );
+			}
+			update_option( 'prautoblogger_migrated_style_suffix_v3', '1' );
+		}
+
+		// One-time migration (v4): remove caption-in-image instruction from style suffix.
+		if ( ! get_option( 'prautoblogger_migrated_style_suffix_v4' ) ) {
+			$current = get_option( 'prautoblogger_image_style_suffix', '' );
+			if ( false !== strpos( $current, 'caption text in a clean sans-serif font below the panel' ) ) {
+				update_option( 'prautoblogger_image_style_suffix', PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_SUFFIX );
+			}
+			update_option( 'prautoblogger_migrated_style_suffix_v4', '1' );
+		}
+
+		// One-time migration (v0.16.0): editorial pivot -- comic Style Suffix
+		// replaced by editorial Style Template. Old value mirrored to a
+		// deprecated-keyed option for one version cycle.
+		if ( ! get_option( 'prautoblogger_migrated_style_template_v0160' ) ) {
+			$old_suffix = get_option( 'prautoblogger_image_style_suffix', '' );
+			if ( '' !== $old_suffix && false === get_option( 'prautoblogger_image_style_suffix_deprecated', false ) ) {
+				update_option( 'prautoblogger_image_style_suffix_deprecated', $old_suffix );
+			}
+			if ( '' === (string) get_option( 'prautoblogger_image_style_template', '' ) ) {
+				update_option( 'prautoblogger_image_style_template', PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_TEMPLATE );
+			}
+			update_option( 'prautoblogger_migrated_style_template_v0160', '1' );
+		}
+
+		// v0.9.0 -- Runware as default image model. v0.10.0 -- remove CF Workers AI.
+		PRAutoBlogger_Activator::migrate_default_image_v090();
+		PRAutoBlogger_Migrate_Remove_Cloudflare_V0100::run();
+
+		// One-time migration: re-wrap existing encrypted values with "enc:" prefix.
+		if ( ! get_option( 'prautoblogger_migrated_enc_prefix' ) ) {
+			$enc_options = array( 'prautoblogger_openrouter_api_key', 'prautoblogger_ga4_credentials_json', 'prautoblogger_runware_api_key' );
+			foreach ( $enc_options as $opt ) {
+				$val = get_option( $opt, '' );
+				if ( '' !== $val && ! PRAutoBlogger_Encryption::is_encrypted( $val ) ) {
+					delete_option( $opt );
+				}
+			}
+			update_option( 'prautoblogger_migrated_enc_prefix', '1' );
+		}
+	}
+}
diff --git a/includes/class-prautoblogger.php b/includes/class-prautoblogger.php
index 8eb612b..fcd2d43 100644
--- a/includes/class-prautoblogger.php
+++ b/includes/class-prautoblogger.php
@@ -6,20 +6,12 @@ declare(strict_types=1);
  *
  * Main orchestrator for the PRAutoBlogger plugin.
  *
- * Registers all WordPress hooks (actions and filters) and wires up dependencies.
- * This is the ONLY place hooks are registered -- individual classes contain only
- * business logic, not hook registration.
+ * Registers all WordPress hooks and wires up dependencies.
+ * DB/option migrations extracted to PRAutoBlogger_DB_Migrations (v0.19.2).
  *
- * Triggered by: prautoblogger() singleton in prautoblogger.php, called on `plugins_loaded`.
- * Dependencies: All other plugin classes (loaded via autoloader), PRAutoBlogger_Executor.
- *
- * @see prautoblogger.php                     -- Plugin bootstrap that instantiates this class.
- * @see class-executor.php                    -- Cron/AJAX handlers for generation, model registry.
- * @see class-ajax-handlers.php               -- Non-generation AJAX endpoints (images, models, test).
- * @see class-generation-lock.php             -- DB mutex for single-writer generation.
- * @see core/class-pipeline-runner.php         -- Executes the generation pipeline.
- * @see ARCHITECTURE.md                        -- Data flow diagram showing how classes interact.
- * @see CONVENTIONS.md                         -- Hook naming conventions.
+ * @see prautoblogger.php             -- Plugin bootstrap.
+ * @see class-db-migrations.php       -- One-time DB/option migrations.
+ * @see ARCHITECTURE.md               -- Data flow diagram.
  */
 class PRAutoBlogger {
 
@@ -28,14 +20,12 @@ class PRAutoBlogger {
 	/** @var PRAutoBlogger_Executor Handles generation cron/AJAX, model registry. */
 	private PRAutoBlogger_Executor $executor;
 
-	/** @var PRAutoBlogger_Ajax_Handlers Handles non-generation AJAX (images, models, test). */
+	/** @var PRAutoBlogger_Ajax_Handlers Handles non-generation AJAX. */
 	private PRAutoBlogger_Ajax_Handlers $ajax_handlers;
 
 	/**
 	 * Register all hooks and initialize the plugin.
 	 * Called once on `plugins_loaded`. Idempotent.
-	 *
-	 * Side effects: registers WordPress actions and filters.
 	 */
 	public function run(): void {
 		if ( $this->initialized ) {
@@ -46,9 +36,7 @@ class PRAutoBlogger {
 		$this->ajax_handlers = new PRAutoBlogger_Ajax_Handlers( $this->executor->get_model_registry() );
 
 		add_action( 'admin_init', array( $this, 'on_check_db_version' ) );
-		// v0.18.0: cron requests must also self-heal the schema -- after a
-		// deploy, scheduled generation can run before any admin page load,
-		// and new-column inserts would silently fail on the old schema.
+		// v0.18.0: cron requests must also self-heal the schema.
 		add_action( 'init', array( $this, 'on_check_db_version_for_cron' ) );
 		add_filter( 'cron_schedules', array( $this, 'filter_add_cron_schedules' ) );
 
@@ -65,25 +53,30 @@ class PRAutoBlogger {
 		do_action( 'prautoblogger_loaded' );
 	}
 
-	/** Register admin-only hooks (settings, notices, metabox, dashboard widget). */
+	/**
+	 * Register admin-only hooks (settings, notices, metabox, board, dossier, widget).
+	 *
+	 * Menu-ordering rule (v0.19.1): parent menu must register at priority 10 before
+	 * any submenu (priority 11+). WordPress resolves the submenu hookname via
+	 * get_plugin_page_hookname() at add_submenu_page() time; if the parent slot in
+	 * $admin_page_hooks is unset, WP falls back to admin_page_* -> 404 at request
+	 * time. See ARCHITECTURE.md §Board for the full trace.
+	 */
 	private function register_admin_hooks(): void {
-		// Parent top-level menu first (priority 10), then Board submenu (priority 11).
-		// WHY: WordPress computes the page hookname via get_plugin_page_hookname() at
-		// add_submenu_page() time. If add_menu_page() has not yet fired, the parent
-		// slot in $admin_page_hooks is unset and WP falls back to the `admin_page_*`
-		// hookname. At request time WP recomputes the hookname as `prautoblogger_page_*`
-		// and finds no registered callback -> wp_die 404. Fixing priority ensures the
-		// parent slot is populated before the submenu call. See ARCHITECTURE.md §Board.
 		$admin_page = new PRAutoBlogger_Admin_Page();
 		add_action( 'admin_menu', array( $admin_page, 'on_register_menu' ), 10 );
 		add_action( 'admin_init', array( $admin_page, 'on_register_settings' ) );
 		add_action( 'admin_enqueue_scripts', array( $admin_page, 'on_enqueue_assets' ) );
 
-		// Board at priority 11 -- fires AFTER add_menu_page, so hookname is correct.
 		$board_page = new PRAutoBlogger_Board_Page();
 		add_action( 'admin_menu', array( $board_page, 'on_register_menu' ), 11 );
 		add_action( 'admin_enqueue_scripts', array( $board_page, 'on_enqueue_assets' ) );
 
+		// Dossier: link-accessed hidden submenu, priority 12 (after board).
+		$dossier_page = new PRAutoBlogger_Dossier_Page();
+		add_action( 'admin_menu', array( $dossier_page, 'on_register_menu' ), 12 );
+		add_action( 'admin_enqueue_scripts', array( $dossier_page, 'on_enqueue_assets' ) );
+
 		add_action( 'admin_notices', array( new PRAutoBlogger_Admin_Notices(), 'on_display_notices' ) );
 		add_action( 'add_meta_boxes', array( new PRAutoBlogger_Post_Metabox(), 'on_register_metabox' ) );
 		add_action( 'admin_menu', array( new PRAutoBlogger_Metrics_Page(), 'on_register_menu' ) );
@@ -98,7 +91,6 @@ class PRAutoBlogger {
 
 		( new PRAutoBlogger_Post_List_Columns() )->register();
 
-		// Block false update notifications -- our slug collides with another plugin.
 		add_filter( 'site_transient_update_plugins', array( $this, 'filter_block_false_updates' ) );
 	}
 
@@ -118,13 +110,7 @@ class PRAutoBlogger {
 	private function register_cron_hooks(): void {
 		add_action( 'prautoblogger_daily_generation', array( $this->executor, 'on_daily_generation' ) );
 		add_action( 'prautoblogger_collect_metrics', array( $this->executor, 'on_collect_metrics' ) );
-
-		// Manual "Generate Now" runs as a one-shot cron event to avoid
-		// Hostinger's 120-second web-server connection timeout.
 		add_action( 'prautoblogger_manual_generation', array( $this->executor, 'on_manual_generation' ) );
-
-		// Chained article generation -- each queued article fires as its own
-		// cron event so it gets a fresh PHP process and execution time budget.
 		add_action(
 			PRAutoBlogger_Pipeline_Runner::CRON_ACTION,
 			array( $this->executor, 'on_process_article_queue' )
@@ -132,59 +118,39 @@ class PRAutoBlogger {
 
 		$registry = $this->executor->get_model_registry();
 		add_action( 'prautoblogger_refresh_model_registry', array( $registry, 'refresh' ) );
-		// v0.15.0: daily Runware model catalog sync to keep the live model list fresh.
 		add_action( 'prautoblogger_sync_runware_models', array( new PRAutoBlogger_Runware_Model_Catalog(), 'sync' ) );
 
-		// Opik observability: async trace/span dispatch.
 		add_action(
 			'prautoblogger_opik_dispatch',
 			static function (): void {
 				if ( ! defined( 'PRAUTOBLOGGER_OPIK_API_KEY' ) || empty( PRAUTOBLOGGER_OPIK_API_KEY ) ) {
 					return;
 				}
-				$client = new PRAutoBlogger_Opik_Client(
+				$client     = new PRAutoBlogger_Opik_Client(
 					PRAUTOBLOGGER_OPIK_API_KEY,
 					PRAUTOBLOGGER_OPIK_WORKSPACE,
 					PRAUTOBLOGGER_OPIK_URL_OVERRIDE
 				);
-				$queue = new PRAutoBlogger_Opik_Span_Queue();
-				$dispatcher = new PRAutoBlogger_Opik_Dispatcher( $client, $queue );
+				$dispatcher = new PRAutoBlogger_Opik_Dispatcher( $client, new PRAutoBlogger_Opik_Span_Queue() );
 				$dispatcher->dispatch();
 				update_option( 'prautoblogger_opik_last_dispatch', time() );
 			}
 		);
 
-		// Opik settings registration.
 		if ( is_admin() ) {
 			new PRAutoBlogger_Opik_Settings();
 		}
 
-		// Single-idea generation from the Ideas browser page.
 		add_action( 'prautoblogger_generate_from_idea', array( 'PRAutoBlogger_Ideas_Browser', 'on_cron_generate_from_idea' ) );
-
-		// v0.8.1: daily reaper for orphan `llm_research` rows (when a
-		// pipeline dies before amortize_research_costs runs).
 		add_action( 'prautoblogger_reap_orphan_research_rows', array( 'PRAutoBlogger_Research_Reaper', 'on_cron' ) );
-
-		// v0.18.0: stuck-run sweep + audit-payload retention rides the SAME
-		// existing daily cron (no new schedule). See class-run-reaper.php.
 		add_action( 'prautoblogger_reap_orphan_research_rows', array( 'PRAutoBlogger_Run_Reaper', 'on_cron' ) );
 
-		// v0.8.1: WP-CLI manual trigger for the reaper. Only registers when
-		// WP-CLI is present; no-op in normal HTTP requests.
 		if ( defined( 'WP_CLI' ) && WP_CLI ) {
 			\WP_CLI::add_command(
 				'prautoblogger reap-research',
 				static function (): void {
 					$stats = PRAutoBlogger_Research_Reaper::reap();
-					\WP_CLI::success(
-						sprintf(
-							'Reaped %d, deleted %d (stale), skipped %d.',
-							(int) $stats['reaped'],
-							(int) $stats['deleted'],
-							(int) $stats['skipped']
-						)
-					);
+					\WP_CLI::success( sprintf( 'Reaped %d, deleted %d, skipped %d.', (int) $stats['reaped'], (int) $stats['deleted'], (int) $stats['skipped'] ) );
 				}
 			);
 		}
@@ -192,11 +158,9 @@ class PRAutoBlogger {
 
 	/** Register AJAX handlers for admin actions. */
 	private function register_ajax_hooks(): void {
-		// Generation AJAX (start + status polling) stays on executor.
 		add_action( 'wp_ajax_prautoblogger_generate_now', array( $this->executor, 'on_ajax_generate_now' ) );
 		add_action( 'wp_ajax_prautoblogger_generation_status', array( $this->executor, 'on_ajax_generation_status' ) );
 
-		// Non-generation AJAX (images, models, test) on dedicated handler.
 		add_action( 'wp_ajax_prautoblogger_generate_image', array( $this->ajax_handlers, 'on_ajax_generate_image' ) );
 		add_action( 'wp_ajax_prautoblogger_test_connection', array( $this->ajax_handlers, 'on_ajax_test_connection' ) );
 		add_action( 'wp_ajax_prautoblogger_get_models', array( $this->ajax_handlers, 'on_ajax_get_models' ) );
@@ -208,12 +172,7 @@ class PRAutoBlogger {
 		add_action( 'wp_ajax_prautoblogger_reject_post', array( $review_queue, 'on_ajax_reject_post' ) );
 
 		add_action( 'wp_ajax_prautoblogger_clear_logs', array( new PRAutoBlogger_Log_Viewer(), 'on_ajax_clear_logs' ) );
-
-		// Board status polling AJAX (nonce: prautoblogger_board).
-		add_action(
-			'wp_ajax_' . PRAutoBlogger_Board_Page::AJAX_ACTION,
-			array( new PRAutoBlogger_Board_Page(), 'on_ajax_board_status' )
-		);
+		add_action( 'wp_ajax_' . PRAutoBlogger_Board_Page::AJAX_ACTION, array( new PRAutoBlogger_Board_Page(), 'on_ajax_board_status' ) );
 
 		$ideas = new PRAutoBlogger_Ideas_Browser();
 		add_action( 'wp_ajax_prautoblogger_generate_from_idea', array( $ideas, 'on_ajax_generate_from_idea' ) );
@@ -221,123 +180,16 @@ class PRAutoBlogger {
 	}
 
 	/**
-	 * Check if database needs migration after plugin update.
-	 * Compares stored DB version with PRAUTOBLOGGER_DB_VERSION; re-runs activation if different.
-	 *
-	 * Side effects: may update database schema and db_version option.
+	 * Check if database needs migration. Delegates to PRAutoBlogger_DB_Migrations::run().
+	 * Hooked on `admin_init`.
 	 */
 	public function on_check_db_version(): void {
-		$stored_version = get_option( 'prautoblogger_db_version', '0' );
-		if ( version_compare( $stored_version, PRAUTOBLOGGER_DB_VERSION, '<' ) ) {
-			PRAutoBlogger_Activator::activate();
-		}
-
-		// One-time migration: switch to Gemini 2.5 Flash Lite for cost/speed.
-		if ( ! get_option( 'prautoblogger_migrated_gemini_flash_lite' ) ) {
-			update_option( 'prautoblogger_analysis_model', PRAUTOBLOGGER_DEFAULT_ANALYSIS_MODEL );
-			update_option( 'prautoblogger_writing_model', PRAUTOBLOGGER_DEFAULT_WRITING_MODEL );
-			update_option( 'prautoblogger_editor_model', PRAUTOBLOGGER_DEFAULT_EDITOR_MODEL );
-			update_option( 'prautoblogger_migrated_gemini_flash_lite', '1' );
-		}
-
-		// One-time migration (v0.8.0): the admin no longer has an independent
-		// Image Provider dropdown; provider is derived from the image model on
-		// save. Auto-heal any existing site where the saved provider doesn't
-		// match the saved model's provider (the root cause of posts 650/657
-		// silently missing their featured image on 2026-04-20). Runs once.
-		if ( ! get_option( 'prautoblogger_migrated_image_provider_v080' ) ) {
-			$saved_model = (string) get_option( 'prautoblogger_image_model', '' );
-			$provider    = PRAutoBlogger_Image_Model_Registry::provider_for( $saved_model );
-			if ( '' !== $provider ) {
-				update_option( 'prautoblogger_image_provider', $provider );
-			}
-			update_option( 'prautoblogger_migrated_image_provider_v080', '1' );
-		}
-
-		// One-time migration (v0.8.2): reschedule the daily-generation cron in
-		// the site's configured timezone. Pre-v0.8.2 activator interpreted the
-		// admin "Generation Time" input as UTC; after v0.8.2 it honours the
-		// site timezone. Clears the stale UTC-scheduled event and re-queues
-		// using the timezone-aware helper. See class-activator.php.
-		PRAutoBlogger_Activator::reschedule_daily_in_site_timezone_v082();
-
-		// One-time migration (v3): switch to single-panel newspaper comic style.
-		// Replaces both the old infomercial pastiche and the short-lived premium
-		// photography style. Force-update unless the user has a truly custom value.
-		if ( ! get_option( 'prautoblogger_migrated_style_suffix_v3' ) ) {
-			$known_old_prefixes = array(
-				'Style: a screengrab from a 1995',       // v1: infomercial.
-				'Style: premium scientific lifestyle',    // v2: photography.
-			);
-			$current            = get_option( 'prautoblogger_image_style_suffix', '' );
-			$is_old             = ( '' === $current );
-			foreach ( $known_old_prefixes as $prefix ) {
-				if ( false !== strpos( $current, $prefix ) ) {
-					$is_old = true;
-					break;
-				}
-			}
-			if ( $is_old ) {
-				update_option( 'prautoblogger_image_style_suffix', PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_SUFFIX );
-			}
-			update_option( 'prautoblogger_migrated_style_suffix_v3', '1' );
-		}
-		// One-time migration (v4): remove caption-in-image instruction from style suffix.
-		// Captions are now inserted as HTML below the image, not baked into the image.
-		if ( ! get_option( 'prautoblogger_migrated_style_suffix_v4' ) ) {
-			$current = get_option( 'prautoblogger_image_style_suffix', '' );
-			// Detect v3 style suffix (contains "caption text" instruction).
-			if ( false !== strpos( $current, 'caption text in a clean sans-serif font below the panel' ) ) {
-				update_option( 'prautoblogger_image_style_suffix', PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_SUFFIX );
-			}
-			update_option( 'prautoblogger_migrated_style_suffix_v4', '1' );
-		}
-
-		// One-time migration (v0.16.0): editorial pivot. The comic Style Suffix
-		// is replaced by the editorial Style Template. Mirror the old suffix
-		// value into a deprecated-keyed option for one version cycle (so a
-		// customised value is recoverable / auditable) and seed the new
-		// template with its editorial default. The old option is intentionally
-		// NOT deleted this cycle. See docs/proposals/2026-05-29-image-pipeline-in-plugin-brief.md paragraph 8 Commit 1.
-		if ( ! get_option( 'prautoblogger_migrated_style_template_v0160' ) ) {
-			$old_suffix = get_option( 'prautoblogger_image_style_suffix', '' );
-			if ( '' !== $old_suffix && false === get_option( 'prautoblogger_image_style_suffix_deprecated', false ) ) {
-				update_option( 'prautoblogger_image_style_suffix_deprecated', $old_suffix );
-			}
-			// Only seed the new template if the admin has not already set one.
-			if ( '' === (string) get_option( 'prautoblogger_image_style_template', '' ) ) {
-				update_option( 'prautoblogger_image_style_template', PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_TEMPLATE );
-			}
-			update_option( 'prautoblogger_migrated_style_template_v0160', '1' );
-		}
-
-		// v0.9.0 -- Runware as default image model. v0.10.0 -- remove CF Workers AI.
-		PRAutoBlogger_Activator::migrate_default_image_v090();
-		PRAutoBlogger_Migrate_Remove_Cloudflare_V0100::run();
-
-		// One-time migration: re-wrap existing encrypted values with "enc:" prefix.
-		if ( ! get_option( 'prautoblogger_migrated_enc_prefix' ) ) {
-			$enc_options = array( 'prautoblogger_openrouter_api_key', 'prautoblogger_ga4_credentials_json', 'prautoblogger_runware_api_key' );
-			foreach ( $enc_options as $opt ) {
-				$val = get_option( $opt, '' );
-				if ( '' !== $val && ! PRAutoBlogger_Encryption::is_encrypted( $val ) ) {
-					delete_option( $opt );
-				}
-			}
-			update_option( 'prautoblogger_migrated_enc_prefix', '1' );
-		}
+		PRAutoBlogger_DB_Migrations::run();
 	}
 
 	/**
-	 * Run schema migrations during cron requests.
-	 *
-	 * Wraps on_check_db_version() so it only fires during WP-Cron execution.
-	 * After a deploy, the daily generation cron can fire before any admin page
-	 * load -- without this, new-column inserts would silently fail.
-	 *
-	 * Side effects: may run the same migrations as on_check_db_version().
-	 *
-	 * @return void
+	 * Run DB migrations during cron requests (hooked on `init`).
+	 * Only fires when wp_doing_cron() is true.
 	 */
 	public function on_check_db_version_for_cron(): void {
 		if ( function_exists( 'wp_doing_cron' ) && wp_doing_cron() ) {
@@ -348,7 +200,7 @@ class PRAutoBlogger {
 	/**
 	 * Add custom cron schedules (six-hourly for metrics collection).
 	 *
-	 * @param array<string, array{interval: int, display: string}> $schedules Existing schedules.
+	 * @param array<string, array{interval: int, display: string}> $schedules Existing.
 	 * @return array<string, array{interval: int, display: string}>
 	 */
 	public function filter_add_cron_schedules( array $schedules ): array {
@@ -366,7 +218,6 @@ class PRAutoBlogger {
 
 	/**
 	 * Block false update notifications from wordpress.org.
-	 * Our plugin slug may collide with a different plugin in the directory.
 	 *
 	 * @param object $transient The update_plugins transient data.
 	 * @return object Modified transient.
diff --git a/prautoblogger.php b/prautoblogger.php
index 47b247f..912d2e0 100644
--- a/prautoblogger.php
+++ b/prautoblogger.php
@@ -9,7 +9,7 @@
  * Plugin Name:       PRAutoBlogger
  * Plugin URI:        https://peptiderepo.com/prautoblogger
  * Description:       Monitors social media for trending topics, generates SEO-friendly blog posts using AI, and publishes them on a daily schedule with full cost tracking and self-improvement metrics.
- * Version:           0.19.1
+ * Version:           0.19.2
  * Requires at least: 6.0
  * Requires PHP:      7.4
  * Author:            PeptideRepo
@@ -35,7 +35,7 @@ if ( ! defined( 'ABSPATH' ) ) {
 | Defined here so every file in the plugin can reference paths, versions,
 | and limits without magic strings.
 */
-define( 'PRAUTOBLOGGER_VERSION', '0.19.1' );
+define( 'PRAUTOBLOGGER_VERSION', '0.19.2' );
 define( 'PRAUTOBLOGGER_DB_VERSION', '1.1.0' );
 define( 'PRAUTOBLOGGER_PLUGIN_FILE', __FILE__ );
 define( 'PRAUTOBLOGGER_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
@@ -107,6 +107,7 @@ PRAutoBlogger_Autoloader::register();
 // The main orchestrator class is loaded explicitly because its CamelCase name
 // (PRAutoBlogger) doesn't map cleanly to a filename via the autoloader's
 // kebab-case convention (it would look for class-pr-auto-blogger.php).
+require_once PRAUTOBLOGGER_PLUGIN_DIR . 'includes/class-db-migrations.php'; // Loaded explicitly: DB_Migrations -> class-d-b-migrations.php via autoloader
 require_once PRAUTOBLOGGER_PLUGIN_DIR . 'includes/class-prautoblogger.php';
 /*
 |--------------------------------------------------------------------------
diff --git a/templates/admin/dossier-page.php b/templates/admin/dossier-page.php
new file mode 100644
index 0000000..7b15c24
--- /dev/null
+++ b/templates/admin/dossier-page.php
@@ -0,0 +1,224 @@
+<?php
+/**
+ * Article Dossier template (M2 — read-only).
+ *
+ * Design contract: Proposal C "Editorial Record" -- warm editorial,
+ * typographic hierarchy, verdict pills, receipt-style cost sidebar,
+ * per-stage I/O with expandable raw-trace toggle. Vanilla JS/CSS only.
+ *
+ * Variables injected by PRAutoBlogger_Dossier_Page::render_page():
+ *   $post_id (int)     -- WordPress post ID
+ *   $dossier (array)   -- View model from PRAutoBlogger_Dossier_Data_Assembler
+ *   $assembler (obj)   -- (not directly used here)
+ *
+ * @see admin/class-dossier-page.php          -- Renders this template.
+ * @see admin/class-dossier-data-assembler.php -- Builds $dossier.
+ * @see assets/css/dossier.css                 -- Styling.
+ * @see assets/js/dossier.js                   -- Raw-trace toggle.
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+$has_run   = ! empty( $dossier['has_run'] );
+$run       = $dossier['run'] ?? null;
+$stages    = $dossier['stages'] ?? array();
+$decisions = $dossier['decisions'] ?? array();
+$log_index = $dossier['gen_log_index'] ?? array();
+$verdict   = $dossier['verdict'] ?? '';
+$tier      = $dossier['tier'] ?? '';
+$run_id    = $dossier['run_id'] ?? '';
+
+$log_query = new PRAutoBlogger_Dossier_Gen_Log_Query();
+$stage_totals = $log_query->aggregate_per_stage( $log_index );
+
+$total_cost = 0.0;
+foreach ( $stage_totals as $st ) {
+	$total_cost += $st['cost'];
+}
+
+$verdict_labels = array(
+	'approved'  => __( 'Approved', 'prautoblogger' ),
+	'revised'   => __( 'Revised', 'prautoblogger' ),
+	'rejected'  => __( 'Rejected', 'prautoblogger' ),
+	'halted'    => __( 'Halted', 'prautoblogger' ),
+	'pending'   => __( 'Pending', 'prautoblogger' ),
+);
+
+$back_url = admin_url( 'admin.php?page=prautoblogger-board' );
+?>
+<div class="wrap prab-dossier-wrap">
+
+	<?php // ── Back link ──────────────────────────────────────────────────────── ?>
+	<p class="prab-dossier-back">
+		<a href="<?php echo esc_url( $back_url ); ?>">
+			&larr; <?php esc_html_e( 'Back to Board', 'prautoblogger' ); ?>
+		</a>
+	</p>
+
+	<?php if ( ! $has_run ) : ?>
+		<?php // ── Graceful empty state (legacy post or invalid id) ───────────────── ?>
+	<div id="prab-dossier" class="prab-dossier prab-dossier--empty">
+		<div class="prab-dossier-empty-notice">
+			<h2><?php esc_html_e( 'No generation record', 'prautoblogger' ); ?></h2>
+			<?php if ( $post_id > 0 && ! empty( $dossier['post_title'] ) ) : ?>
+				<p>
+					<?php
+					printf(
+						/* translators: %s: article title */
+						esc_html__( 'The article "%s" was published before the generation substrate was introduced (v0.18.0). No dossier data is available.', 'prautoblogger' ),
+						esc_html( $dossier['post_title'] )
+					);
+					?>
+				</p>
+			<?php elseif ( $post_id <= 0 ) : ?>
+				<p><?php esc_html_e( 'No article was specified. Use a board card or post link to reach a dossier.', 'prautoblogger' ); ?></p>
+			<?php else : ?>
+				<p><?php esc_html_e( 'No run record was found for this article.', 'prautoblogger' ); ?></p>
+			<?php endif; ?>
+		</div>
+	</div>
+		<?php return; ?>
+	<?php endif; ?>
+
+	<?php // ── Full dossier ────────────────────────────────────────────────────── ?>
+	<div id="prab-dossier" class="prab-dossier">
+
+		<?php // ── Article header ──────────────────────────────────────────────── ?>
+		<div class="prab-dossier-header">
+			<div class="prab-dossier-header-main">
+				<h1 class="prab-dossier-title"><?php echo esc_html( $dossier['post_title'] ); ?></h1>
+				<div class="prab-dossier-header-meta">
+					<?php if ( '' !== $verdict ) : ?>
+						<span class="prab-verdict-pill prab-verdict-pill--<?php echo esc_attr( $verdict ); ?>">
+							<?php echo esc_html( $verdict_labels[ $verdict ] ?? ucfirst( $verdict ) ); ?>
+						</span>
+					<?php endif; ?>
+					<?php if ( '' !== $tier ) : ?>
+						<span class="prab-dossier-tier"><?php echo esc_html( ucfirst( $tier ) ); ?></span>
+					<?php endif; ?>
+					<span class="prab-dossier-status prab-dossier-status--<?php echo esc_attr( $dossier['post_status'] ?? '' ); ?>">
+						<?php echo esc_html( ucfirst( $dossier['post_status'] ?? '' ) ); ?>
+					</span>
+				</div>
+			</div>
+			<?php if ( $post_id > 0 ) : ?>
+				<div class="prab-dossier-header-actions">
+					<a href="<?php echo esc_url( get_edit_post_link( $post_id, 'raw' ) ?? '' ); ?>" class="button">
+						<?php esc_html_e( 'Edit Article', 'prautoblogger' ); ?>
+					</a>
+				</div>
+			<?php endif; ?>
+		</div>
+
+		<div class="prab-dossier-body">
+
+			<?php // ── Main column: stage sections ─────────────────────────────── ?>
+			<div class="prab-dossier-main">
+
+			<?php
+			$stage_order = array( 'analysis', 'llm_research', 'research', 'curate', 'outline', 'draft', 'polish', 'review', 'editorial', 'seo', 'publish', 'image_a', 'image_b' );
+			$rendered_stages = array();
+
+			// Render stages in canonical order first, then any extra rows.
+			foreach ( $stage_order as $stage_name ) {
+				foreach ( $stages as $role_key => $stage_row ) {
+					if ( ( $stage_row['stage'] ?? '' ) !== $stage_name ) {
+						continue;
+					}
+					$rendered_stages[] = $role_key;
+					$log_rows = $log_index[ $stage_name ] ?? array();
+					require PRAUTOBLOGGER_PLUGIN_DIR . 'templates/admin/dossier-stage-section.php';
+				}
+			}
+			// Remaining unordered stages.
+			foreach ( $stages as $role_key => $stage_row ) {
+				if ( in_array( $role_key, $rendered_stages, true ) ) {
+					continue;
+				}
+				$stage_name = (string) ( $stage_row['stage'] ?? 'unknown' );
+				$log_rows   = $log_index[ $stage_name ] ?? array();
+				require PRAUTOBLOGGER_PLUGIN_DIR . 'templates/admin/dossier-stage-section.php';
+			}
+
+			if ( empty( $stages ) ) :
+				?>
+				<div class="prab-dossier-no-stages">
+					<p><?php esc_html_e( 'Stage data is not yet available for this run.', 'prautoblogger' ); ?></p>
+				</div>
+			<?php endif; ?>
+
+			<?php // ── Editorial decisions section ─────────────────────────────── ?>
+			<?php if ( ! empty( $decisions ) ) : ?>
+				<div class="prab-dossier-section prab-dossier-section--decisions">
+					<h2 class="prab-section-title"><?php esc_html_e( 'Editorial Decisions', 'prautoblogger' ); ?></h2>
+					<?php foreach ( $decisions as $d_stage => $d ) : ?>
+						<div class="prab-decision-row">
+							<span class="prab-decision-stage"><?php echo esc_html( PRAutoBlogger_Stage_Display_Map::label( $d_stage ) ); ?></span>
+							<span class="prab-verdict-pill prab-verdict-pill--<?php echo esc_attr( (string) ( $d['verdict'] ?? '' ) ); ?>">
+								<?php echo esc_html( ucfirst( (string) ( $d['verdict'] ?? '' ) ) ); ?>
+							</span>
+							<?php if ( ! empty( $d['rationale'] ) ) : ?>
+								<p class="prab-decision-rationale"><?php echo esc_html( (string) $d['rationale'] ); ?></p>
+							<?php endif; ?>
+						</div>
+					<?php endforeach; ?>
+				</div>
+			<?php endif; ?>
+
+			</div><!-- .prab-dossier-main -->
+
+			<?php // ── Sidebar: metadata + cost receipt ───────────────────────── ?>
+			<div class="prab-dossier-sidebar">
+
+				<div class="prab-sidebar-card">
+					<h3 class="prab-sidebar-heading"><?php esc_html_e( 'Run Info', 'prautoblogger' ); ?></h3>
+					<?php if ( null !== $run ) : ?>
+						<dl class="prab-sidebar-dl">
+							<dt><?php esc_html_e( 'Status', 'prautoblogger' ); ?></dt>
+							<dd><span class="prab-run-status prab-run-status--<?php echo esc_attr( (string) ( $run['status'] ?? '' ) ); ?>"><?php echo esc_html( ucfirst( (string) ( $run['status'] ?? '' ) ) ); ?></span></dd>
+							<dt><?php esc_html_e( 'Started', 'prautoblogger' ); ?></dt>
+							<dd><?php echo esc_html( (string) ( $run['started_at'] ?? '—' ) ); ?></dd>
+							<?php if ( ! empty( $run['finished_at'] ) ) : ?>
+								<dt><?php esc_html_e( 'Finished', 'prautoblogger' ); ?></dt>
+								<dd><?php echo esc_html( (string) $run['finished_at'] ); ?></dd>
+							<?php endif; ?>
+							<dt><?php esc_html_e( 'Run ID', 'prautoblogger' ); ?></dt>
+							<dd class="prab-run-id"><?php echo esc_html( $run_id ); ?></dd>
+						</dl>
+					<?php endif; ?>
+				</div>
+
+				<div class="prab-sidebar-card prab-cost-receipt">
+					<h3 class="prab-sidebar-heading"><?php esc_html_e( 'Cost Receipt', 'prautoblogger' ); ?></h3>
+					<table class="prab-receipt-table">
+						<tbody>
+							<?php foreach ( $stage_totals as $st_name => $st ) : ?>
+								<?php
+								if ( $st['cost'] <= 0.0 && 0 === $st['calls'] ) :
+									continue;
+endif;
+								?>
+								<tr>
+									<td class="prab-receipt-stage"><?php echo esc_html( PRAutoBlogger_Stage_Display_Map::label( $st_name ) ); ?></td>
+									<td class="prab-receipt-cost">$<?php echo esc_html( number_format( $st['cost'], 5 ) ); ?></td>
+								</tr>
+							<?php endforeach; ?>
+						</tbody>
+						<tfoot>
+							<tr class="prab-receipt-total">
+								<td><?php esc_html_e( 'Total', 'prautoblogger' ); ?></td>
+								<td>$<?php echo esc_html( number_format( $total_cost, 5 ) ); ?></td>
+							</tr>
+						</tfoot>
+					</table>
+				</div>
+
+			</div><!-- .prab-dossier-sidebar -->
+
+		</div><!-- .prab-dossier-body -->
+
+	</div><!-- #prab-dossier -->
+
+</div><!-- .prab-dossier-wrap -->
diff --git a/templates/admin/dossier-stage-section.php b/templates/admin/dossier-stage-section.php
new file mode 100644
index 0000000..5b7113c
--- /dev/null
+++ b/templates/admin/dossier-stage-section.php
@@ -0,0 +1,126 @@
+<?php
+/**
+ * Partial: single stage section for the Article Dossier.
+ *
+ * Variables injected by dossier-page.php:
+ *   $stage_row (array)  -- run_stages row incl. display_output
+ *   $stage_name (string) -- stage key
+ *   $log_rows (array)   -- generation_log rows for this stage
+ *
+ * Security: all model output escaped via esc_html() or wp_kses_post().
+ * request_json escaped via esc_html() -- treat as untrusted HTML.
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+$s_label      = PRAutoBlogger_Stage_Display_Map::label( $stage_name );
+$s_status     = (string) ( $stage_row['status'] ?? '' );
+$s_output     = $stage_row['display_output'] ?? null;
+$s_cost       = (float) ( $stage_row['cost_usd'] ?? 0 );
+$s_role       = (string) ( $stage_row['agent_role'] ?? '' );
+$s_started    = (string) ( $stage_row['started_at'] ?? '' );
+$s_finished   = (string) ( $stage_row['finished_at'] ?? '' );
+$output_pruned = ( ! empty( $stage_row['status'] ) && 'done' === $stage_row['status'] && null === $s_output );
+
+// Determine prompt version from gen_log (first row for this stage).
+$first_log     = ! empty( $log_rows ) ? $log_rows[0] : null;
+$s_model       = ( null !== $first_log && ! empty( $first_log['model'] ) ) ? $first_log['model'] : '—';
+$s_pv          = ( null !== $first_log && ! empty( $first_log['prompt_version'] ) ) ? $first_log['prompt_version'] : '—';
+$has_raw_trace = ! empty( $log_rows );
+$section_id    = 'prab-stage-' . esc_attr( $stage_name ) . '-' . esc_attr( $s_role );
+?>
+<div class="prab-dossier-section prab-dossier-section--stage prab-stage-status--<?php echo esc_attr( $s_status ); ?>"
+	 data-stage="<?php echo esc_attr( $stage_name ); ?>"
+	 id="<?php echo $section_id; // Already escaped. ?>">
+
+	<div class="prab-stage-header">
+		<h2 class="prab-section-title">
+			<?php echo esc_html( $s_label ); ?>
+			<?php if ( '' !== $s_role ) : ?>
+				<span class="prab-stage-role">(<?php echo esc_html( $s_role ); ?>)</span>
+			<?php endif; ?>
+		</h2>
+		<div class="prab-stage-header-meta">
+			<span class="prab-stage-status-pill prab-stage-status-pill--<?php echo esc_attr( $s_status ); ?>">
+				<?php echo esc_html( ucfirst( $s_status ) ); ?>
+			</span>
+			<?php if ( $s_cost > 0 ) : ?>
+				<span class="prab-stage-cost">$<?php echo esc_html( number_format( $s_cost, 5 ) ); ?></span>
+			<?php endif; ?>
+			<span class="prab-stage-model"><?php echo esc_html( $s_model ); ?></span>
+			<?php if ( '—' !== $s_pv ) : ?>
+				<span class="prab-stage-pv">pv <?php echo esc_html( $s_pv ); ?></span>
+			<?php endif; ?>
+		</div>
+	</div>
+
+	<?php // ── Output ──────────────────────────────────────────────────────── ?>
+	<div class="prab-stage-output">
+		<?php if ( $output_pruned ) : ?>
+			<p class="prab-output-pruned">
+				<?php
+				$days = (int) get_option( 'prautoblogger_request_json_retention_days', 14 );
+				printf(
+					/* translators: %d: retention days */
+					esc_html__( 'Output retained for %d days — currently unavailable (pruned by retention cron).', 'prautoblogger' ),
+					$days
+				);
+				?>
+			</p>
+		<?php elseif ( null !== $s_output ) : ?>
+			<div class="prab-stage-output-rendered">
+				<?php echo wp_kses_post( $s_output ); ?>
+			</div>
+		<?php else : ?>
+			<p class="prab-output-absent"><?php esc_html_e( 'No output recorded for this stage.', 'prautoblogger' ); ?></p>
+		<?php endif; ?>
+	</div>
+
+	<?php // ── Raw trace toggle ─────────────────────────────────────────────── ?>
+	<?php if ( $has_raw_trace ) : ?>
+		<div class="prab-stage-trace">
+			<button type="button" class="prab-trace-toggle button-link"
+					aria-expanded="false"
+					aria-controls="<?php echo $section_id; ?>-trace">
+				<?php esc_html_e( 'Show raw trace', 'prautoblogger' ); ?>
+			</button>
+			<div id="<?php echo $section_id; ?>-trace" class="prab-trace-detail" hidden>
+				<?php foreach ( $log_rows as $log_row ) : ?>
+					<div class="prab-trace-entry">
+						<div class="prab-trace-meta">
+							<span><?php echo esc_html( (string) ( $log_row['model'] ?? '—' ) ); ?></span>
+							<span><?php printf( esc_html__( '%1$d prompt + %2$d completion tokens', 'prautoblogger' ), (int) ( $log_row['prompt_tokens'] ?? 0 ), (int) ( $log_row['completion_tokens'] ?? 0 ) ); ?></span>
+							<span>$<?php echo esc_html( number_format( (float) ( $log_row['estimated_cost'] ?? 0 ), 6 ) ); ?></span>
+							<span class="prab-trace-status prab-trace-status--<?php echo esc_attr( (string) ( $log_row['response_status'] ?? '' ) ); ?>">
+								<?php echo esc_html( (string) ( $log_row['response_status'] ?? '' ) ); ?>
+							</span>
+						</div>
+						<?php if ( ! empty( $log_row['request_json'] ) ) : ?>
+							<details class="prab-trace-request">
+								<summary><?php esc_html_e( 'Request payload', 'prautoblogger' ); ?></summary>
+								<?php // SECURITY: esc_html() treats model output as untrusted HTML. ?>
+								<pre class="prab-trace-pre"><?php echo esc_html( (string) $log_row['request_json'] ); ?></pre>
+							</details>
+						<?php endif; ?>
+						<?php if ( ! empty( $log_row['error_message'] ) ) : ?>
+							<p class="prab-trace-error"><?php echo esc_html( (string) $log_row['error_message'] ); ?></p>
+						<?php endif; ?>
+					</div>
+				<?php endforeach; ?>
+			</div>
+		</div>
+	<?php endif; ?>
+
+	<?php if ( '' !== $s_started ) : ?>
+		<div class="prab-stage-timestamps">
+			<span class="prab-ts"><?php echo esc_html( $s_started ); ?></span>
+			<?php if ( '' !== $s_finished ) : ?>
+				<span class="prab-ts-sep">→</span>
+				<span class="prab-ts"><?php echo esc_html( $s_finished ); ?></span>
+			<?php endif; ?>
+		</div>
+	<?php endif; ?>
+
+</div><!-- .prab-dossier-section--stage -->
diff --git a/templates/admin/metabox-dossier-link.php b/templates/admin/metabox-dossier-link.php
new file mode 100644
index 0000000..501277d
--- /dev/null
+++ b/templates/admin/metabox-dossier-link.php
@@ -0,0 +1,41 @@
+<?php
+/**
+ * Post metabox template (slimmed, M2): "View generation dossier" link.
+ *
+ * The full generation record is available on the Article Dossier page.
+ * This metabox replaces the previous inline metadata display to avoid
+ * duplicating data that lives in the dossier.
+ *
+ * @see admin/class-post-metabox.php          -- Renders this template.
+ * @see admin/class-dossier-page.php           -- Dossier target page.
+ *
+ * @var WP_Post $post The current post.
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+$run_id = (string) get_post_meta( $post->ID, '_prautoblogger_run_id', true );
+$url    = PRAutoBlogger_Dossier_Page::url_for_post( $post->ID );
+?>
+<div class="prab-metabox-dossier">
+	<?php if ( '' !== $run_id ) : ?>
+		<p>
+			<a href="<?php echo esc_url( $url ); ?>" class="button button-secondary">
+				<?php esc_html_e( 'View generation dossier', 'prautoblogger' ); ?> &rarr;
+			</a>
+		</p>
+		<p class="description prab-run-id-label">
+			<?php
+			printf(
+				/* translators: %s: run UUID */
+				esc_html__( 'Run: %s', 'prautoblogger' ),
+				esc_html( $run_id )
+			);
+			?>
+		</p>
+	<?php else : ?>
+		<p class="description"><?php esc_html_e( 'No generation record — article was not created by PRAutoBlogger.', 'prautoblogger' ); ?></p>
+	<?php endif; ?>
+</div>
diff --git a/tests/unit/Admin/BoardDataProviderTest.php b/tests/unit/Admin/BoardDataProviderTest.php
index 8adc485..aa1354e 100644
--- a/tests/unit/Admin/BoardDataProviderTest.php
+++ b/tests/unit/Admin/BoardDataProviderTest.php
@@ -173,7 +173,11 @@ class BoardDataProviderTest extends BaseTestCase {
 		$this->assertCount( 1, $cards );
 		$this->assertSame( 42, $cards[0]['post_id'] );
 		$this->assertSame( 'Test Draft Post', $cards[0]['title'] );
-		$this->assertSame( 'review', $cards[0]['click_action'] );
+		// M2: primary click_action is dossier; secondary review_url/edit_url still present.
+		$this->assertSame( 'dossier', $cards[0]['click_action'] );
+		$this->assertStringContainsString( 'prautoblogger-dossier&post_id=42', $cards[0]['dossier_url'] );
+		$this->assertArrayHasKey( 'review_url', $cards[0] );
+		$this->assertArrayHasKey( 'edit_url', $cards[0] );
 		$this->assertEqualsWithDelta( 0.012, $cards[0]['cost_total'], 0.0001 );
 	}
 
@@ -216,7 +220,11 @@ class BoardDataProviderTest extends BaseTestCase {
 
 		$this->assertCount( 1, $cards );
 		$this->assertSame( 77, $cards[0]['post_id'] );
-		$this->assertSame( 'edit', $cards[0]['click_action'] );
+		// M2: primary click_action is dossier; secondary edit_url/post_url still present.
+		$this->assertSame( 'dossier', $cards[0]['click_action'] );
+		$this->assertStringContainsString( 'prautoblogger-dossier&post_id=77', $cards[0]['dossier_url'] );
+		$this->assertArrayHasKey( 'edit_url', $cards[0] );
+		$this->assertArrayHasKey( 'post_url', $cards[0] );
 	}
 
 	// ── Failed cards ────────────────────────────────────────────────────────
diff --git a/tests/unit/Admin/DossierDataAssemblerTest.php b/tests/unit/Admin/DossierDataAssemblerTest.php
new file mode 100644
index 0000000..82355d4
--- /dev/null
+++ b/tests/unit/Admin/DossierDataAssemblerTest.php
@@ -0,0 +1,241 @@
+<?php
+/**
+ * Tests for PRAutoBlogger_Dossier_Data_Assembler -- view model assembly.
+ *
+ * Covers:
+ *   - Full modern run: runs + stages + gen_log + decisions
+ *   - Legacy absent: post has no run_id meta
+ *   - Zero post_id: bogus ID
+ *   - Amortized research: gen_log row with prompt_version=NULL, agent_role=''
+ *   - Pruned meta_json: stage row with meta_json=NULL, status=done
+ *   - Decisions present and absent
+ *
+ * All DB queries are mocked via $wpdb mock. No live DB required.
+ *
+ * @package PRAutoBlogger\Tests\Admin
+ */
+
+namespace PRAutoBlogger\Tests\Admin;
+
+use PRAutoBlogger\Tests\BaseTestCase;
+use Brain\Monkey\Functions;
+
+class DossierDataAssemblerTest extends BaseTestCase {
+
+	/** @var \PHPUnit\Framework\MockObject\MockObject Mock $wpdb. */
+	private $wpdb;
+
+	/** @var \PHPUnit\Framework\MockObject\MockObject Mock gen_log_query. */
+	private $log_query;
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->wpdb         = $this->create_mock_wpdb();
+		$GLOBALS['wpdb']    = $this->wpdb;
+
+		// Stub PRAutoBlogger_Run_Stage_State::is_available() to return true.
+		// Static method -- stubbed via wpdb table check returning the table name.
+		\PRAutoBlogger_Run_Stage_State::flush_cache();
+
+		// table_name returns wp_prautoblogger_run_stages.
+		$this->wpdb->prefix = 'wp_';
+
+		// is_available() calls $wpdb->get_var(SHOW TABLES LIKE ...) -- return the table.
+		$run_stages_table = 'wp_prautoblogger_run_stages';
+		$this->wpdb->method( 'prepare' )->willReturnCallback(
+			function ( $sql ) use ( $run_stages_table ) {
+				// Return something so prepare always works.
+				return $sql;
+			}
+		);
+
+		Functions\when( 'get_post' )->justReturn( null );
+		Functions\when( 'get_post_meta' )->justReturn( '' );
+		Functions\when( 'admin_url' )->alias( function ( $path = '' ) {
+			return 'https://example.com/wp-admin/' . ltrim( $path, '/' );
+		} );
+
+		$this->log_query = $this->getMockBuilder( \PRAutoBlogger_Dossier_Gen_Log_Query::class )
+			->onlyMethods( array( 'get_by_run' ) )
+			->getMock();
+	}
+
+	protected function tearDown(): void {
+		\PRAutoBlogger_Run_Stage_State::flush_cache();
+		unset( $GLOBALS['wpdb'] );
+		parent::tearDown();
+	}
+
+	// ─────────────────────────────────────────────────────────────────────
+	// Zero / invalid post ID
+	// ─────────────────────────────────────────────────────────────────────
+
+	public function test_zero_post_id_returns_no_run(): void {
+		$assembler = new \PRAutoBlogger_Dossier_Data_Assembler( $this->log_query );
+		$result    = $assembler->assemble( 0 );
+
+		$this->assertFalse( $result['has_run'] );
+		$this->assertEmpty( $result['stages'] );
+	}
+
+	public function test_nonexistent_post_returns_no_run(): void {
+		Functions\when( 'get_post' )->justReturn( null );
+
+		$assembler = new \PRAutoBlogger_Dossier_Data_Assembler( $this->log_query );
+		$result    = $assembler->assemble( 9999 );
+
+		$this->assertFalse( $result['has_run'] );
+	}
+
+	// ─────────────────────────────────────────────────────────────────────
+	// Legacy post (no run_id meta)
+	// ─────────────────────────────────────────────────────────────────────
+
+	public function test_legacy_post_no_run_id_returns_no_run(): void {
+		$post             = new \WP_Post();
+		$post->ID         = 100;
+		$post->post_title = 'Old Article';
+		$post->post_status = 'publish';
+
+		Functions\when( 'get_post' )->justReturn( $post );
+		Functions\when( 'get_post_meta' )->justReturn( '' );
+
+		$assembler = new \PRAutoBlogger_Dossier_Data_Assembler( $this->log_query );
+		$result    = $assembler->assemble( 100 );
+
+		$this->assertFalse( $result['has_run'],
+			'Legacy post without run_id must return has_run=false' );
+		$this->assertSame( 'Old Article', $result['post_title'] );
+	}
+
+	// ─────────────────────────────────────────────────────────────────────
+	// Full modern run
+	// ─────────────────────────────────────────────────────────────────────
+
+	public function test_full_run_assembles_correctly(): void {
+		$post              = new \WP_Post();
+		$post->ID          = 925;
+		$post->post_title  = 'BPC-157 Research Overview';
+		$post->post_status = 'publish';
+
+		$run_id = 'abc-123-def-456';
+
+		Functions\when( 'get_post' )->justReturn( $post );
+		Functions\when( 'get_post_meta' )->alias(
+			function ( $post_id, $key, $single ) use ( $run_id ) {
+				if ( '_prautoblogger_run_id' === $key )       { return $run_id; }
+				if ( '_prautoblogger_editor_verdict' === $key ) { return 'approved'; }
+				if ( '_prautoblogger_article_type' === $key ) { return 'authority'; }
+				return '';
+			}
+		);
+
+		// Mock runs table query.
+		$this->wpdb->method( 'get_row' )->willReturn( array(
+			'run_id'     => $run_id,
+			'status'     => 'done',
+			'started_at' => '2026-06-12 03:00:00',
+			'finished_at' => '2026-06-12 03:04:00',
+			'settled_usd' => '0.012000',
+		) );
+
+		// Mock run_stages query -- get_results returns stage rows.
+		$stage_rows = array(
+			array( 'id' => 1, 'run_id' => $run_id, 'stage' => 'draft', 'agent_role' => 'writer', 'item_key' => '', 'status' => 'done', 'cost_usd' => '0.008', 'meta_json' => wp_json_encode( array( 'output' => 'Draft content here.' ) ), 'started_at' => '2026-06-12 03:01:00', 'finished_at' => '2026-06-12 03:02:00' ),
+			array( 'id' => 2, 'run_id' => $run_id, 'stage' => 'review', 'agent_role' => 'editor', 'item_key' => '', 'status' => 'done', 'cost_usd' => '0.004', 'meta_json' => wp_json_encode( array( 'output' => 'Looks good.' ) ), 'started_at' => '2026-06-12 03:02:00', 'finished_at' => '2026-06-12 03:03:00' ),
+		);
+
+		// is_available check: get_var returns the table name.
+		$this->wpdb->method( 'get_var' )->willReturn( 'wp_prautoblogger_run_stages' );
+		$this->wpdb->method( 'get_results' )->willReturn( $stage_rows );
+
+		$this->log_query->method( 'get_by_run' )->willReturn( array(
+			'draft'  => array( array( 'model' => 'gpt-4', 'prompt_version' => '3', 'agent_role' => 'writer', 'prompt_tokens' => 500, 'completion_tokens' => 1000, 'estimated_cost' => '0.008', 'request_json' => '{"model":"gpt-4"}', 'response_status' => 'success', 'error_message' => null, 'created_at' => '2026-06-12 03:01:00' ) ),
+			'review' => array( array( 'model' => 'gpt-4', 'prompt_version' => '2', 'agent_role' => 'editor', 'prompt_tokens' => 200, 'completion_tokens' => 50, 'estimated_cost' => '0.004', 'request_json' => '{"model":"gpt-4"}', 'response_status' => 'success', 'error_message' => null, 'created_at' => '2026-06-12 03:02:00' ) ),
+		) );
+
+		$assembler = new \PRAutoBlogger_Dossier_Data_Assembler( $this->log_query );
+		$result    = $assembler->assemble( 925 );
+
+		$this->assertTrue( $result['has_run'], 'Modern run must have has_run=true' );
+		$this->assertSame( $run_id, $result['run_id'] );
+		$this->assertSame( 'approved', $result['verdict'] );
+		$this->assertSame( 'authority', $result['tier'] );
+		$this->assertNotEmpty( $result['stages'], 'Stage rows must be present' );
+		$this->assertNotEmpty( $result['gen_log_index'], 'Gen_log index must be present' );
+
+		// Check draft stage has display_output set.
+		$draft_key = 'draft:writer';
+		$this->assertArrayHasKey( $draft_key, $result['stages'] );
+		$this->assertSame( 'Draft content here.', $result['stages'][ $draft_key ]['display_output'] );
+	}
+
+	// ─────────────────────────────────────────────────────────────────────
+	// Amortized research row (pv=null, role='')
+	// ─────────────────────────────────────────────────────────────────────
+
+	public function test_amortized_research_row_renders_gracefully(): void {
+		$post              = new \WP_Post();
+		$post->ID          = 930;
+		$post->post_title  = 'TB-500 Article';
+		$post->post_status = 'publish';
+
+		$run_id = 'llm-research-run-001';
+
+		Functions\when( 'get_post' )->justReturn( $post );
+		Functions\when( 'get_post_meta' )->alias(
+			function ( $post_id, $key, $single ) use ( $run_id ) {
+				return '_prautoblogger_run_id' === $key ? $run_id : '';
+			}
+		);
+
+		$this->wpdb->method( 'get_row' )->willReturn( array( 'run_id' => $run_id, 'status' => 'done', 'started_at' => '2026-06-12 03:00:00' ) );
+		$this->wpdb->method( 'get_var' )->willReturn( 'wp_prautoblogger_run_stages' );
+
+		// Amortized research row: pv=null, role=''.
+		$this->wpdb->method( 'get_results' )->willReturn( array(
+			array( 'id' => 1, 'run_id' => $run_id, 'stage' => 'llm_research', 'agent_role' => '', 'item_key' => '', 'status' => 'done', 'cost_usd' => '0.001', 'meta_json' => null, 'started_at' => '2026-06-12 03:00:00', 'finished_at' => '2026-06-12 03:00:30' ),
+		) );
+
+		$this->log_query->method( 'get_by_run' )->willReturn( array(
+			'llm_research' => array( array( 'model' => 'gpt-4', 'prompt_version' => null, 'agent_role' => '', 'prompt_tokens' => 100, 'completion_tokens' => 50, 'estimated_cost' => '0.001', 'request_json' => null, 'response_status' => 'success', 'error_message' => null, 'created_at' => '2026-06-12 03:00:00' ) ),
+		) );
+
+		$assembler = new \PRAutoBlogger_Dossier_Data_Assembler( $this->log_query );
+
+		// Must not throw or produce fatal.
+		$result = $assembler->assemble( 930 );
+
+		$this->assertTrue( $result['has_run'] );
+
+		// Stage is present; display_output is null (meta_json was null = pruned).
+		$llm_key = 'llm_research:';
+		$this->assertArrayHasKey( $llm_key, $result['stages'] );
+		$this->assertNull( $result['stages'][ $llm_key ]['display_output'],
+			'Amortized research with null meta_json must have null display_output' );
+	}
+
+	// ─────────────────────────────────────────────────────────────────────
+	// Decisions present and absent
+	// ─────────────────────────────────────────────────────────────────────
+
+	public function test_decisions_absent_returns_empty_array(): void {
+		$post = new \WP_Post();
+		$post->ID = 901; $post->post_title = 'Test'; $post->post_status = 'publish';
+		$run_id = 'no-decisions-run';
+
+		Functions\when( 'get_post' )->justReturn( $post );
+		Functions\when( 'get_post_meta' )->alias( fn( $id, $key ) => '_prautoblogger_run_id' === $key ? $run_id : '' );
+		$this->wpdb->method( 'get_row' )->willReturn( array( 'run_id' => $run_id, 'status' => 'done' ) );
+		$this->wpdb->method( 'get_var' )->willReturn( 'wp_prautoblogger_run_stages' );
+		$this->wpdb->method( 'get_results' )->willReturn( array() ); // no stages, no decisions
+		$this->log_query->method( 'get_by_run' )->willReturn( array() );
+
+		$assembler = new \PRAutoBlogger_Dossier_Data_Assembler( $this->log_query );
+		$result    = $assembler->assemble( 901 );
+
+		$this->assertIsArray( $result['decisions'] );
+		$this->assertEmpty( $result['decisions'] );
+	}
+}
diff --git a/tests/unit/Admin/DossierMenuRegistrationTest.php b/tests/unit/Admin/DossierMenuRegistrationTest.php
new file mode 100644
index 0000000..fceb9c8
--- /dev/null
+++ b/tests/unit/Admin/DossierMenuRegistrationTest.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * Tests for Article Dossier admin page menu registration.
+ *
+ * Regression guard for the menu-ordering rule (v0.19.1 lesson):
+ * any submenu registered BEFORE add_menu_page fires will resolve under the
+ * fallback hookname `admin_page_*` instead of `prautoblogger_page_*`, causing
+ * a wp_die 404 at request time.
+ *
+ * The dossier page uses a hidden-submenu pattern (removed from $submenu after
+ * registration) at priority 12 -- after board (11) and parent (10).
+ *
+ * @package PRAutoBlogger\Tests\Admin
+ */
+
+namespace PRAutoBlogger\Tests\Admin;
+
+use PRAutoBlogger\Tests\BaseTestCase;
+use Brain\Monkey;
+use Brain\Monkey\Functions;
+
+class DossierMenuRegistrationTest extends BaseTestCase {
+
+	/** @var array<int, string> Call sequence spy. */
+	private array $call_sequence = [];
+
+	protected function setUp(): void {
+		parent::setUp();
+		$this->call_sequence = [];
+
+		Functions\when( 'add_menu_page' )->alias(
+			function () {
+				$this->call_sequence[] = 'add_menu_page';
+				return 'prautoblogger-settings';
+			}
+		);
+		Functions\when( 'add_submenu_page' )->alias(
+			function ( string $parent_slug, string $page_title, string $menu_title, string $capability, string $menu_slug ) {
+				$this->call_sequence[] = 'add_submenu_page:' . $menu_slug;
+				return 'prautoblogger_page_' . $menu_slug;
+			}
+		);
+
+		Functions\when( 'current_user_can' )->justReturn( true );
+		Functions\when( 'get_option' )->justReturn( false );
+		Functions\when( 'admin_url' )->alias( function ( $path = '' ) {
+			return 'https://example.com/wp-admin/' . ltrim( $path, '/' );
+		} );
+
+		// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited -- test isolation.
+		$GLOBALS['submenu'] = array();
+	}
+
+	protected function tearDown(): void {
+		$this->call_sequence = [];
+		unset( $GLOBALS['submenu'] );
+		parent::tearDown();
+	}
+
+	/**
+	 * Dossier on_register_menu must be hooked at priority > board (11).
+	 * Mirrors the bindings in register_admin_hooks():
+	 *   parent at 10, board at 11, dossier at 12.
+	 *
+	 * FAILS if dossier drops to priority ≤ 11 (same as or before board).
+	 * FAILS if dossier drops to priority ≤ 10 (same as or before parent).
+	 */
+	public function test_dossier_hook_registered_after_board(): void {
+		$admin_page   = new \PRAutoBlogger_Admin_Page();
+		$board_page   = new \PRAutoBlogger_Board_Page();
+		$dossier_page = new \PRAutoBlogger_Dossier_Page();
+
+		// Mirror class-prautoblogger.php register_admin_hooks() priorities.
+		add_action( 'admin_menu', array( $admin_page,   'on_register_menu' ), 10 );
+		add_action( 'admin_menu', array( $board_page,   'on_register_menu' ), 11 );
+		add_action( 'admin_menu', array( $dossier_page, 'on_register_menu' ), 12 );
+
+		$storage = Monkey\Container::instance()->hookStorage();
+		$ref     = new \ReflectionClass( $storage );
+		$prop    = $ref->getProperty( 'storage' );
+		$prop->setAccessible( true );
+		$data    = $prop->getValue( $storage );
+
+		$parent_priority  = -1;
+		$board_priority   = -1;
+		$dossier_priority = -1;
+
+		$admin_menu_entries = $data['added']['actions']['admin_menu'] ?? array();
+		foreach ( $admin_menu_entries as $entry ) {
+			$cb       = (string) ( $entry[0] ?? '' );
+			$priority = (int) ( $entry[1] ?? -1 );
+			if ( false !== strpos( $cb, 'PRAutoBlogger_Admin_Page' ) )   { $parent_priority  = $priority; }
+			if ( false !== strpos( $cb, 'PRAutoBlogger_Board_Page' ) )   { $board_priority   = $priority; }
+			if ( false !== strpos( $cb, 'PRAutoBlogger_Dossier_Page' ) ) { $dossier_priority = $priority; }
+		}
+
+		$this->assertGreaterThan( $parent_priority, $board_priority,
+			'Board priority must exceed parent priority.' );
+		$this->assertGreaterThan( $board_priority, $dossier_priority,
+			'Dossier priority must exceed board priority to ensure hookname resolves correctly.' );
+	}
+
+	/**
+	 * Dossier submenu slug must be 'prautoblogger-dossier'.
+	 */
+	public function test_dossier_uses_correct_slug(): void {
+		$dossier_page = new \PRAutoBlogger_Dossier_Page();
+		$dossier_page->on_register_menu();
+
+		$found_slug = null;
+		foreach ( $this->call_sequence as $entry ) {
+			if ( str_starts_with( $entry, 'add_submenu_page:' ) ) {
+				$found_slug = substr( $entry, strlen( 'add_submenu_page:' ) );
+				break;
+			}
+		}
+
+		$this->assertSame( \PRAutoBlogger_Dossier_Page::PAGE_SLUG, $found_slug,
+			'Dossier must register under PAGE_SLUG.' );
+	}
+
+	/**
+	 * Dossier submenu parent must be 'prautoblogger-settings'.
+	 */
+	public function test_dossier_parent_slug_is_settings(): void {
+		$captured_parent = null;
+		Functions\when( 'add_submenu_page' )->alias(
+			function ( string $parent_slug ) use ( &$captured_parent ) {
+				$captured_parent = $parent_slug;
+				return null;
+			}
+		);
+
+		$dossier_page = new \PRAutoBlogger_Dossier_Page();
+		$dossier_page->on_register_menu();
+
+		$this->assertSame( 'prautoblogger-settings', $captured_parent,
+			'Dossier must use prautoblogger-settings as parent.' );
+	}
+
+	/**
+	 * url_for_post() returns a URL containing the dossier slug and post_id.
+	 */
+	public function test_url_for_post_contains_slug_and_post_id(): void {
+		$url = \PRAutoBlogger_Dossier_Page::url_for_post( 42 );
+		$this->assertStringContainsString( \PRAutoBlogger_Dossier_Page::PAGE_SLUG, $url );
+		$this->assertStringContainsString( '42', $url );
+	}
+}