feat: add acknowledged_by and acknowledged_at columns to violations schema

db/schema.sql

@@ -3,6 +3,7 @@ CREATE TABLE IF NOT EXISTS employees (
     name        TEXT    NOT NULL,
     department  TEXT,
     supervisor  TEXT,
+    notes       TEXT,
     created_at  DATETIME DEFAULT CURRENT_TIMESTAMP
 );
 
@@ -19,6 +20,8 @@ CREATE TABLE IF NOT EXISTS violations (
     details              TEXT,
     submitted_by         TEXT,
     witness_name         TEXT,
+    acknowledged_by      TEXT,    -- name of person who received the document
+    acknowledged_at      TEXT,    -- date acknowledged (YYYY-MM-DD)
     negated              INTEGER NOT NULL DEFAULT 0,
     negated_at           DATETIME,
     prior_active_points  INTEGER, -- snapshot at time of logging