feat: implement Deep Forest dark mode, swipe gestures, PWA support, and PostgreSQL Full-Text Search

migrations/005_search_articles.up.sql

@@ -0,0 +1,15 @@
+-- Migration: 005_search_articles_up
+-- Description: Add Full-Text Search support to articles table
+
+-- Add tsvector column (generated)
+-- Weighting: Title (A), Summary (B), Content (C)
+ALTER TABLE articles 
+ADD COLUMN IF NOT EXISTS tsv tsvector 
+GENERATED ALWAYS AS (
+    setweight(to_tsvector('french', coalesce(title, '')), 'A') ||
+    setweight(to_tsvector('french', coalesce(summary, '')), 'B') ||
+    setweight(to_tsvector('french', coalesce(content, '')), 'C')
+) STORED;
+
+-- Create GIN index for fast searching
+CREATE INDEX IF NOT EXISTS idx_articles_tsv ON articles USING GIN(tsv);