Remove remaining SQLite-only schema and docs residue.

.gitignore

@@ -1,7 +1,3 @@
-/data.db
-/data.db-*
-/.test.db
-/.test.db-*
 /bin/
 /tmp/
 .env

internal/store/postgres.go

@@ -10,17 +10,13 @@ import (
 	_ "github.com/jackc/pgx/v5/stdlib"
 )
 
-// applySchema runs semicolon-separated DDL statements, skipping PRAGMA lines.
+// applySchema runs semicolon-separated DDL statements.
 func applySchema(db *sql.DB, schema string) error {
 	for _, stmt := range strings.Split(schema, ";") {
 		stmt = strings.TrimSpace(stmt)
 		if stmt == "" {
 			continue
 		}
-		upper := strings.ToUpper(stmt)
-		if strings.HasPrefix(upper, "PRAGMA") {
-			continue
-		}
 		if _, err := db.Exec(stmt); err != nil {
 			return fmt.Errorf("%w: %s", err, stmt)
 		}

schema.sql

@@ -1,5 +1,3 @@
-PRAGMA foreign_keys = ON;
-
 CREATE TABLE IF NOT EXISTS users (
   id TEXT PRIMARY KEY,
   username TEXT NOT NULL UNIQUE,

todo.md

@@ -4,24 +4,23 @@ From the project review. Priority order within each section.
 
 ## Fix soon
 
-- [x] **Persist sessions** — Sessions live in the app DB (`sessions` table): SQLite locally, `postgresstore` when `DATABASE_URL` is set. Opaque cookie unchanged; unused `SESSION_SECRET` removed from config / `.env.example`.
+- [x] **Persist sessions** — Sessions live in the app DB (`sessions` table) via `postgresstore`. Opaque cookie unchanged; unused `SESSION_SECRET` removed from config / `.env.example`.
 - [x] **Drop Dockerfile** — Deploying on DigitalOcean App Platform (buildpack from `go.mod`); no container image needed.
 - [ ] **Rune-safe truncation** — `title[:120]`, `body[:8000]`, `city[:80]`, answer body, etc. can split multi-byte UTF-8. Truncate by runes (or safely).
 - [x] **Admin bootstrap** — `ADMIN_USERNAME` seeds the first admin on register only when no admin exists. Promote/demote via `/admin/users` (admins only); roles stay in `users.role`.
 
 ## Docs & ops
 
-- [ ] **README** — How to run locally, env vars (from `.env.example`), admin bootstrap, SQLite vs PlanetScale `DATABASE_URL`, App Platform notes (`PORT`, `SECURE_COOKIE=1`).
-- [ ] **Migrations story** — Schema is applied on boot from `schema.sql` (+ sessions DDL). OK for v1; plan real migrations before schema drifts between SQLite and Postgres.
+- [ ] **README** — How to run locally, env vars (from `.env.example`), admin bootstrap, PlanetScale `DATABASE_URL`, App Platform notes (`PORT`, `SECURE_COOKIE=1`).
+- [ ] **Migrations story** — Schema is applied on boot from `schema.sql` (+ sessions DDL). OK for v1; plan real migrations before schema drifts.
 - [x] **App Platform listen port** — Prefers `PORT`, then `LISTEN`, then `:8080`.
-- [x] **Prod DB = PlanetScale Postgres** — App already opens Postgres when `DATABASE_URL` is set; DSN cleanup strips PlanetScale/libpq-only params (`sslrootcert=system`, `sslnegotiation`). Use dashboard URI on **5432** for boot schema create; **6432** (PgBouncer) later if you need pooling.
+- [x] **Prod DB = PlanetScale Postgres** — App opens Postgres via required `DATABASE_URL`; DSN cleanup strips PlanetScale/libpq-only params (`sslrootcert=system`, `sslnegotiation`). Use dashboard URI on **5432** for boot schema create; **6432** (PgBouncer) later if you need pooling.
 
 ## Smaller / later
 
 - [ ] Rate-limit login/register (bcrypt helps; still open to brute-force).
 - [ ] Graceful shutdown instead of bare `ListenAndServe`.
 - [ ] More tests: vote HTMX paths, admin answer/hide, archive redirects; optional Postgres integration test.
-- [ ] Watch dual-dialect schema — one SQL file works now; expect divergence later.
 
 ## Suggested order of attack