feat: licence page, admin pages editor, license types, gradient card placeholders, latest-year home view

- Feature 1: public /licence.php fetches 'licenses' page from DB, renders Markdown
- Feature 1: nav.php adds 'Licence' link with active state
- Feature 2: Database::getPage(), savePage(), getAllPages() methods
- Feature 2: bundled src/Parsedown.php (MIT, zero-dependency)
- Feature 2: apropos.php now renders 'about' page content from DB via Parsedown
- Feature 2: admin/pages.php (list) + admin/pages-edit.php (EasyMDE editor)
- Feature 2: admin/actions/page.php (auth+CSRF+validation+save)
- Feature 2: admin/head.php adds 'Pages statiques' nav link
- Feature 3: storage/schema.sql seeds 8 CC license types
- Feature 3: storage/migrations/003_seed_license_types.sql (applied to live DB)
- Feature 3: Database::getLicenseTypes() / getAllLicenseTypes()
- Feature 3: admin/add.php + formulaire.php: license_id field on add form
- Feature 3: admin/edit.php: license_id field on edit form with raw FK lookup
- Feature 3: tfe.php: shows 'Licence :' meta row when non-null
- Feature 6: main.css: .card__media--gradient styles
- Feature 6: index.php: deterministic HSL gradient placeholder cards
- Feature 6: Database::getLatestYearTheses() + getLatestPublishedYear()
- Feature 6: index.php default home = random latest-year theses with info label

TODO.md

@@ -41,14 +41,11 @@
 
 Create a public-facing `/licence.php` page, styled consistently with `apropos.php`.
 
-- [ ] **`public/licence.php`** — new public page; fetches content from `pages` table
-      (slug `'licenses'`); renders with `nl2br` / Markdown; uses `apropos.css` layout
-      or a new `licence.css` if divergent styling needed
-- [ ] **`templates/nav.php`** — add "Licence" link between "Répertoire" and "À Propos"
-      (or after "À Propos"); apply `site-nav__link--active` when `$currentNav === 'licence'`
-- [ ] The `pages` table already has an `INSERT OR IGNORE` seed for slug `'licenses'`
-      in `storage/schema.sql` — no schema change needed here; verify the row exists
-      in the live DB and add a migration if not
+- [x] **`public/licence.php`** — new public page; fetches content from `pages` table
+      (slug `'licenses'`); renders with Parsedown Markdown; uses `apropos.css` layout
+- [x] **`templates/nav.php`** — add "Licence" link between "Répertoire" and "À Propos";
+      apply `site-nav__link--active` when `$currentNav === 'licence'`
+- [x] The `pages` table row for slug `'licenses'` verified in live DB
 
 ---
 
@@ -59,45 +56,28 @@ panel, stored in the existing `pages` table.
 
 #### 2a — `src/Database.php`
 
-- [ ] `getPage(string $slug): array|null` — `SELECT * FROM pages WHERE slug = ?`
-- [ ] `savePage(string $slug, string $content): void` — `UPDATE pages SET content = ?,
-      updated_at = CURRENT_TIMESTAMP WHERE slug = ?`; throw if slug not found
+- [x] `getPage(string $slug): array|null` — `SELECT * FROM pages WHERE slug = ?`
+- [x] `savePage(string $slug, string $content): void` — throws if slug not found
+- [x] `getAllPages(): array` — for listing in admin
 
 #### 2b — Admin pages editor UI
 
-- [ ] **`public/admin/pages.php`** — list all editable pages (fetch all from `pages`
-      table); links to edit each one; reuse `.admin-table` styles
-- [ ] **`public/admin/pages-edit.php`** — edit form for a single page (slug passed via
-      GET `?slug=`); loads page content; renders a **EasyMDE** (or SimpleMDE) Markdown
-      WYSIWYG editor via CDN; POST action → `actions/page.php`
-      - Include EasyMDE from CDN: `https://cdn.jsdelivr.net/npm/easymde/dist/easymde.min.js`
-        + matching CSS
-      - Textarea `name="content"` pre-filled with `$page['content']`; hidden input
-        `name="slug"` with the page slug
-      - CSRF token as hidden input
+- [x] **`public/admin/pages.php`** — list all editable pages; links to edit each one
+- [x] **`public/admin/pages-edit.php`** — EasyMDE WYSIWYG Markdown editor via CDN
 
 #### 2c — `public/admin/actions/page.php`
 
-- [ ] Auth guard + CSRF check
-- [ ] Validate `slug` ∈ `['about', 'licenses', 'charte', 'contact']`
-- [ ] Validate `content` length ≤ 65 535 chars (TEXT column limit)
-- [ ] Call `$db->savePage($slug, $content)`
-- [ ] Set `$_SESSION['success']`; redirect to `../pages.php`
+- [x] Auth guard + CSRF check + slug validation + length validation + savePage + redirect
 
 #### 2d — Public pages render Markdown
 
-- [ ] **`public/apropos.php`** — replace hardcoded HTML body text with content from
-      `$db->getPage('about')`; render Markdown via a PHP parser
-      (use **Parsedown** via Composer, or a ~150-line zero-dependency inline parser
-      if Composer is not available in this project — check `composer.json`)
-- [ ] **`public/licence.php`** — same: render `$db->getPage('licenses')` as Markdown
-- [ ] Choose Markdown renderer: check if Composer is available; if not, bundle
-      `vendor/Parsedown.php` as a single-file include (MIT licensed, copy-paste friendly)
+- [x] **`public/apropos.php`** — renders `$db->getPage('about')` via Parsedown (bundled `src/Parsedown.php`)
+- [x] **`public/licence.php`** — renders `$db->getPage('licenses')` via Parsedown
+- [x] Parsedown bundled as `src/Parsedown.php` (zero-dependency, MIT)
 
 #### 2e — Nav links in admin
 
-- [ ] **`templates/admin/head.php`** — add "Pages statiques" nav item linking to
-      `/admin/pages.php`; apply active class when on `pages.php` or `pages-edit.php`
+- [x] **`templates/admin/head.php`** — "Pages statiques" nav item added
 
 ---
 
@@ -109,54 +89,36 @@ no seed data yet.
 
 #### 3a — Schema / DB
 
-- [ ] **`storage/schema.sql`** — add seed `INSERT OR IGNORE` for common Creative Commons
-      licences into `license_types`:
-      `CC BY 4.0`, `CC BY-SA 4.0`, `CC BY-ND 4.0`, `CC BY-NC 4.0`,
-      `CC BY-NC-SA 4.0`, `CC BY-NC-ND 4.0`, `Tous droits réservés`, `Domaine public`
-- [ ] **`storage/migrations/003_seed_license_types.sql`** — same inserts wrapped in
-      `INSERT OR IGNORE` so they're safe to run on an existing DB; also contains
-      no structural changes (no ALTER TABLE needed — `theses.license_id` FK already
-      exists in the schema)
-- [ ] Verify live DB has `license_types` table; if missing (older DB without that
-      table), add `CREATE TABLE IF NOT EXISTS` to the migration
+- [x] **`storage/schema.sql`** — seed `INSERT OR IGNORE` for 8 CC licence types added
+- [x] **`storage/migrations/003_seed_license_types.sql`** — migration created + applied
+- [x] Verified live DB has `license_types` with 8 rows
 
 #### 3b — `src/Database.php`
 
-- [ ] `getLicenseTypes(): array` — `SELECT * FROM license_types ORDER BY name`
-- [ ] `getAllLicenseTypes(): array` — alias for form-loading consistency
+- [x] `getLicenseTypes(): array`
+- [x] `getAllLicenseTypes(): array` — alias
 
 #### 3c — Add form (`public/admin/add.php`)
 
-- [ ] Load `$licenseTypes = $db->getAllLicenseTypes()` alongside existing reference data
-- [ ] Add "Licence" `<select name="license_id">` row in the form (between synopsis
-      and duration, or after duration — whichever is logical); include empty/unknown
-      option as default
+- [x] Loads `$licenseTypes`; "Licence" `<select name="license_id">` added before duration
 
 #### 3d — Add action (`public/admin/actions/formulaire.php`)
 
-- [ ] Read `$licenseId = filter_var($_POST['license_id'] ?? '', FILTER_VALIDATE_INT) ?: null`
-- [ ] Add `license_id` to the `INSERT INTO theses (…)` column list and `$stmt->execute([…])`
+- [x] `$licenseId` parsed + included in INSERT
 
 #### 3e — Edit form (`public/admin/edit.php`)
 
-- [ ] Load `$licenseTypes = $db->getAllLicenseTypes()`
-- [ ] Add "Licence" `<select name="license_id">` row; pre-select current `$thesis['license_id']`
-      (note: view exposes `license_type` as the name string; need to separately query
-      `theses.license_id` for the raw FK value, or add it to the view — see 3f)
-- [ ] In the POST handler: `UPDATE theses SET … license_id = ? …` with the submitted value
+- [x] Loads `$licenseTypes`; raw `license_id` FK fetched directly; select pre-populated
+- [x] POST handler: `license_id` included in UPDATE
 
 #### 3f — View update
 
-- [ ] **`storage/schema.sql`** — update `v_theses_full` view to also `SELECT t.license_id`
-      (the raw FK) alongside the existing `lt.name as license_type`; required so the
-      edit form can pre-select the correct `<option>`
-- [ ] **`storage/migrations/003_seed_license_types.sql`** — include `DROP VIEW IF EXISTS
-      v_theses_full; CREATE VIEW … (updated definition)`
+- [ ] **`storage/schema.sql`** — update `v_theses_full` to expose `t.license_id` raw FK
+      (edit form currently queries theses directly — lower priority)
 
 #### 3g — TFE public page
 
-- [ ] **`public/tfe.php`** — add "Licence :" meta row using `$data['license_type']`
-      (already in the view); display only if non-null
+- [x] **`public/tfe.php`** — "Licence :" meta row added, shown when non-null
 
 ---
 
@@ -316,64 +278,19 @@ home grid (wider, shorter aspect ratio).
 
 #### 6a — Gradient placeholder for cards without a banner
 
-When a TFE has no banner and no cover image, display a CSS gradient using HSL hue
-derived from the thesis ID (deterministic per TFE, consistent across page loads).
-
-- [ ] **`public/index.php`** — in the card thumbnail block, replace the current
-      `<div class="card__media--placeholder">◻</div>` with:
-      ```php
-      // Compute a deterministic hue from thesis ID (160° spread)
-      $hue = ($item['id'] * 47 + 160) % 360; // 47 is a prime step, 160° base
-      $hue2 = ($hue + 40) % 360;             // second stop
-      ?>
-      <div class="card__media--gradient"
-           style="background: linear-gradient(135deg,
-                  hsl(<?= $hue ?>, 60%, 65%),
-                  hsl(<?= $hue2 ?>, 55%, 45%));">
-          <span class="card__gradient-author"><?= htmlspecialchars($item['authors'] ?? '') ?></span>
-          <span class="card__gradient-title"><?= htmlspecialchars($item['title']) ?></span>
-      </div>
-      ```
-- [ ] **`public/assets/main.css`** — add styles for `.card__media--gradient`,
-      `.card__gradient-author`, `.card__gradient-title`:
-      - `.card__media--gradient`: `width:100%; height:100%; display:flex; flex-direction:column;
-        align-items:center; justify-content:center; padding:1rem; text-align:center;`
-      - `.card__gradient-author`: `color:#fff; font-size:0.75rem; opacity:.85; margin-bottom:.25rem;`
-      - `.card__gradient-title`: `color:#fff; font-size:0.85rem; font-weight:600;
-        display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden;`
+- [x] **`public/index.php`** — gradient placeholder using HSL hue from thesis ID
+- [x] **`public/assets/main.css`** — `.card__media--gradient`, `.card__gradient-author`,
+      `.card__gradient-title` styles added
 
 #### 6b — Banner image as card thumbnail
 
-- [ ] **`public/index.php`** — update thumbnail resolution logic:
-      1. Check `$item['banner_path']` first (new banner field)
-      2. Fall back to first image in `$item['files']` (existing logic)
-      3. Fall back to `$item['cover_image']` if present
-      4. Fall through to gradient placeholder (6a)
-- [ ] Note: `getPublishedTheses()` currently returns from `v_theses_public` which does
-      not include `files` (they're loaded lazily in `getThesisById`); the index loop
-      currently accesses `$item['files']` but the method doesn't return them — this
-      is a pre-existing bug; either add banner_path to the view (simpler) or fix the
-      files join; the banner column on the view (5a) is sufficient for 6a/6b
+- [x] **`public/index.php`** — checks `banner_path` first, falls through to gradient
 
 #### 6c — Random ordering from the latest year
 
-- [ ] **`src/Database.php`** — add `getLatestYearTheses(int $limit = 24): array`:
-      ```sql
-      SELECT * FROM v_theses_public
-      WHERE year = (SELECT MAX(year) FROM theses WHERE is_published = 1)
-      ORDER BY RANDOM()
-      LIMIT :limit
-      ```
-      Note: `ORDER BY RANDOM()` is re-evaluated on every call — no caching needed;
-      the randomness is per PHP request (page load)
-- [ ] **`public/index.php`** — when no `?year` filter is active and `?page=1` (or no page):
-      - Replace `$db->getPublishedTheses($itemsPerPage, $offset)` with
-        `$db->getLatestYearTheses($itemsPerPage)`
-      - Still show paginated view for `?year=X` filter and `?page=N` requests
-      - Add a visual indicator (e.g. `<p class="home-latest-label">Découvrez les TFE de …</p>`)
-        showing which year is being displayed on the random home view
-      - Pagination is disabled/hidden on the default home view (random selection from
-        one year — no pages needed unless the year has >24 TFEs; handle gracefully)
+- [x] **`src/Database.php`** — `getLatestYearTheses(int $limit = 24)` + `getLatestPublishedYear()`
+- [x] **`public/index.php`** — default home view uses random latest-year selection;
+      paginated view for `?year=X` and `?page=N`; info label shown
 
 ---