Add account browsing simulation

src/database/client.ts

@@ -564,6 +564,50 @@ export function runMigrations(db: Database.Database): void {
       // Null keeps the adaptive allowance; a value is an operator override.
       addColumnIfNotExists(db, 'account_growth_settings', 'daily_limit', 'INTEGER');
     },
+    () => db.exec(`
+      CREATE TABLE IF NOT EXISTS account_browsing_settings (
+        account_id TEXT PRIMARY KEY,
+        enabled INTEGER NOT NULL DEFAULT 0 CHECK(enabled IN (0, 1)),
+        daily_target_min INTEGER NOT NULL DEFAULT 3,
+        daily_target_max INTEGER NOT NULL DEFAULT 6,
+        post_weight INTEGER NOT NULL DEFAULT 60,
+        comment_weight INTEGER NOT NULL DEFAULT 40,
+        quiet_hours_json TEXT NOT NULL DEFAULT '{"enabled":true,"startHour":0,"endHour":7}',
+        minimum_gap_ms INTEGER NOT NULL DEFAULT 2700000,
+        jitter_ms INTEGER NOT NULL DEFAULT 900000,
+        allow_nsfw INTEGER NOT NULL DEFAULT 0 CHECK(allow_nsfw IN (0, 1)),
+        next_due_at INTEGER,
+        updated_at INTEGER NOT NULL,
+        FOREIGN KEY (account_id) REFERENCES reddit_accounts(account_id) ON DELETE CASCADE,
+        CHECK(daily_target_min BETWEEN 1 AND 12),
+        CHECK(daily_target_max BETWEEN daily_target_min AND 12),
+        CHECK(post_weight >= 0 AND comment_weight >= 0 AND post_weight + comment_weight > 0)
+      );
+
+      CREATE TABLE IF NOT EXISTS account_browsing_decisions (
+        account_id TEXT NOT NULL,
+        thing_fullname TEXT NOT NULL,
+        thing_kind TEXT NOT NULL CHECK(thing_kind IN ('post', 'comment')),
+        post_id TEXT NOT NULL,
+        subreddit TEXT NOT NULL COLLATE NOCASE,
+        author TEXT NOT NULL,
+        permalink TEXT NOT NULL,
+        decision TEXT NOT NULL CHECK(decision IN ('simulated-upvote', 'skipped', 'rejected')),
+        reason TEXT NOT NULL,
+        discovered_at INTEGER NOT NULL,
+        decided_at INTEGER NOT NULL,
+        scheduled_session_id TEXT NOT NULL,
+        PRIMARY KEY (account_id, thing_fullname),
+        FOREIGN KEY (account_id) REFERENCES reddit_accounts(account_id) ON DELETE CASCADE
+      );
+      CREATE INDEX IF NOT EXISTS idx_account_browsing_decisions_recent
+        ON account_browsing_decisions(account_id, decided_at DESC);
+      CREATE UNIQUE INDEX IF NOT EXISTS idx_account_browsing_decisions_selected
+        ON account_browsing_decisions(thing_fullname)
+        WHERE decision = 'simulated-upvote';
+      CREATE INDEX IF NOT EXISTS idx_account_browsing_decisions_day
+        ON account_browsing_decisions(account_id, decision, decided_at);
+    `),
   ];
 
   let currentVersion = db.pragma('user_version', { simple: true }) as number;