feat(5.12): modal editare + cont obligatoriu la import; design.md + PRD 5.13 revizuit (/autoplan)

5.12 (livrat): editare in modal a randurilor de preview, cont obligatoriu inainte de
import, formular editare extras (_form_editare, _editare_preview_modal), plus suita de
teste aferenta (preview edit/compact, mapare op, form editare, signup, admin panel).

Design + planificare:
- docs/design.md: sistem de design (tokeni, breakpoints, scara control, componente, a11y).
- docs/prd/prd-5.12-* si prd-5.13-* (5.13 cu raport /autoplan: CEO+Design+Eng, audit trail).

Curatare: sterse PNG-urile de test/mockup temporare din radacina.

Nota: implementarea CSS 5.13 (responsive compact + sistem butoane) NU e inca facuta —
planul revizuit cere refactorul testelor fragile din test_web_responsive.py INAINTE de CSS.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/db.py

@@ -81,6 +81,9 @@ def _migrate(conn: sqlite3.Connection) -> None:
             "ALTER TABLE accounts ADD COLUMN on_unmapped_error_default INTEGER NOT NULL DEFAULT 0 "
             "CHECK (on_unmapped_error_default IN (0, 1))"
         )
+    if "email" not in acc_cols:
+        # Email canonic de contact al firmei (US-001, PRD 5.12). Nullable pt. conturi legacy.
+        conn.execute("ALTER TABLE accounts ADD COLUMN email TEXT")
     # Unicitate CUI (un CUI = un cont); NULL distinct nativ -> conturi fara CUI multiplu.
     conn.execute(
         "CREATE UNIQUE INDEX IF NOT EXISTS ux_accounts_cui ON accounts(cui) WHERE cui IS NOT NULL"
@@ -105,6 +108,12 @@ def _migrate(conn: sqlite3.Connection) -> None:
         irows_cols = {r["name"] for r in conn.execute("PRAGMA table_info(import_rows)").fetchall()}
         if "override_json" not in irows_cols:
             conn.execute("ALTER TABLE import_rows ADD COLUMN override_json TEXT")
+        if "reviewed" not in irows_cols:
+            # Marcaj confirmare umana (US-007, PRD 5.12). NU intra in payload/idempotenta.
+            # NOT NULL DEFAULT 0: valoare clara (0=neconfirmat), fara ambiguitate NULL vs 0.
+            conn.execute(
+                "ALTER TABLE import_rows ADD COLUMN reviewed INTEGER NOT NULL DEFAULT 0"
+            )
 
     # Index batch_id pe submissions (poate lipsi pe DB veche)
     existing_idx = {r["name"] for r in conn.execute(