Add a TTL-based cache for the expensive checks on the admin system page,
eliminating repeated systemctl subprocess calls (~4×~100ms), curl self-pings
(~200-500ms), disk_*_space() and PHP ini reads on every page load.
Changes:
- storage/migrations/007_system_cache.sql: new migration creating the
system_cache table (key TEXT PK, value TEXT, updated_at INTEGER)
- storage/schema.sql: system_cache table added before pages table
- Applied migration to live storage/posterg.db
- src/SystemCache.php: new class with get/set/isStale/ageSeconds/invalidate;
uses SQLite INSERT … ON CONFLICT upsert; no external dependencies
- src/Database.php: added getDatabasePath(): string accessor
- public/admin/system.php:
- Bootstrap SystemCache at request start using the existing DB PDO handle
- system_status: cached with 2-min TTL (systemctl + curl checks)
- php_info: cached with 1-hour TTL (PHP ini values are runtime-constant)
- disk_info: cached with 5-min TTL (total/free/used/pct tuple)
- Logs section: unchanged — always reads live log tail per active tab
- ?refresh=1 GET param invalidates all three cache keys before rendering
- Status panel heading shows cache badge: '⚡ Cache — il y a Xs' (hit)
or '⟳ Actualisé' (miss/fresh), styled via new .sys-cache-badge rules
- public/assets/css/system.css: .sys-cache-badge / --hit / --miss styles
- config.php: getDatabasePath() detects php built-in CLI server
(php_sapi_name() === 'cli-server') and routes to test.db; all
other SAPIs (nginx/fpm) get posterg.db. DB_ENV env-var still
overrides either way.
- migrate.sh: auto-initialise the target DB from storage/schema.sql
when the file is absent or has no tables yet. Existing DBs with
data are left completely untouched (table_count check, no re-run
of schema on populated DB). Idempotent: safe to run repeatedly.
- justfile: serve still calls migrate (which now handles init too),
no DB_ENV prefix needed since sapi detection handles routing.
- Replace <div class="tfe-layout"> with <article>, <div class="tfe-left"> with
<header>, <div class="tfe-right"> with <aside> (supplementary media column)
- Fix inverted heading hierarchy: <h1> is now the thesis title (primary topic);
author demoted to <p class="tfe-author"> (metadata, not a heading)
- Replace <div class="tfe-meta-list"> / <div class="tfe-meta-item"> / <span class="label">
/ <span class="value"> with <dl> / <dt> / <dd> (WCAG 1.3.1 info & relationships)
- Replace <div class="tfe-media-block"> with <figure>; <p class="tfe-file-caption">
with <figcaption>; PDF <embed> gets .tfe-pdf-fallback download link (WCAG 4.1.2)
- Move back link to top of left column; extract inline styles to .tfe-back-link,
.tfe-note-value, .tfe-restricted CSS classes
- Fix image alt text: description column used when populated, fallback to
"Title — Author" instead of raw filename (WCAG 1.1.1)
- Add sr-only new-tab warning on baiu_link (WCAG 1.3.1 / 2.4.4)
- Fix PDF embed height: clamp(300px, 80vh, 700px) prevents horizontal overflow
on small screens (WCAG 1.4.10 reflow)
- tfe.css: update all selectors to match new structure; remove inline styles;
unify .tfe-restricted and .tfe-no-files; add .tfe-pdf-fallback, .tfe-back-link
- Add idx_theses_pub_year composite index on theses(is_published, year DESC) to
schema.sql; replaces the need for the query planner to pick between the two
separate idx_theses_published / idx_theses_year indexes and sort with a temp
B-tree. Every public query filters on is_published=1 and orders/filters by year,
so this covering index eliminates the sort pass for those queries.
- Create storage/migrations/006_add_composite_index.sql and apply to both
posterg.db and test.db.
- Fix storage/migrations/005_add_banner.sql: the view recreation in that file
still referenced the pre-migration-001 table/column names (thesis_keywords,
keywords.keyword). Updated to use thesis_tags / tags tg to match the canonical
schema.sql. The live DB was unaffected (migration 001 ran before 005), but the
file was misleading and would fail if ever re-run from scratch.
