feat: add software_hashes table schema and reimport pipeline

- Add softwareHashes Drizzle model (download_id PK, md5, crc32,
  size_bytes, inner_path, updated_at)
- Update import_mysql.sh to reimport from JSON snapshot after DB wipe
- Add pnpm scripts: update:hashes, export:hashes
- Create data/zxdb/ directory for JSON snapshot storage

claude-opus-4-6@MacFiver

bin/import_mysql.sh

@@ -37,4 +37,49 @@ mysql $MYSQL_ARGS < ZXDB/ZXDB_mysql.sql
 #  echo "CREATE ROLE IF NOT EXISTS 'zxdb_readonly';"
 #  echo "GRANT SELECT, SHOW VIEW ON \`zxdb\`.* TO 'zxdb_readonly';"
 } | mysql --force $MYSQL_ARGS "$DB_NAME"
+# ---- Reimport software_hashes from JSON snapshot if available ----
+HASHES_SNAPSHOT="$SCRIPT_DIR/../data/zxdb/software_hashes.json"
+if [ -f "$HASHES_SNAPSHOT" ]; then
+  echo "Reimporting software_hashes from $HASHES_SNAPSHOT ..."
+  node -e "
+    const fs = require('fs');
+    const mysql = require('mysql2/promise');
+    (async () => {
+      const snap = JSON.parse(fs.readFileSync('$HASHES_SNAPSHOT', 'utf8'));
+      if (!snap.rows || snap.rows.length === 0) {
+        console.log('  No rows in snapshot, skipping.');
+        return;
+      }
+      const pool = mysql.createPool({ uri: '$ZXDB_URL', connectionLimit: 1 });
+      await pool.query(\`
+        CREATE TABLE IF NOT EXISTS software_hashes (
+          download_id INT NOT NULL PRIMARY KEY,
+          md5 VARCHAR(32) NOT NULL,
+          crc32 VARCHAR(8) NOT NULL,
+          size_bytes BIGINT NOT NULL,
+          inner_path VARCHAR(500) NOT NULL,
+          updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+          INDEX idx_sh_md5 (md5),
+          INDEX idx_sh_crc32 (crc32)
+        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
+      \`);
+      await pool.query('TRUNCATE TABLE software_hashes');
+      // Batch insert in chunks of 500
+      const chunk = 500;
+      for (let i = 0; i < snap.rows.length; i += chunk) {
+        const batch = snap.rows.slice(i, i + chunk);
+        const values = batch.map(r => [r.download_id, r.md5, r.crc32, r.size_bytes, r.inner_path, r.updated_at]);
+        await pool.query(
+          'INSERT INTO software_hashes (download_id, md5, crc32, size_bytes, inner_path, updated_at) VALUES ?',
+          [values]
+        );
+      }
+      console.log('  Imported ' + snap.rows.length + ' rows into software_hashes.');
+      await pool.end();
+    })().catch(e => { console.error('  Error reimporting software_hashes:', e.message); process.exit(0); });
+  "
+else
+  echo "No software_hashes snapshot found at $HASHES_SNAPSHOT — skipping reimport."
+fi
+
 mysqldump --no-data -uroot -p -h${DB_HOST} -P${DB_PORT} "$DB_NAME" > ZXDB/ZXDB_mysql_STRUCTURE_ONLY.sql

package.json

@@ -10,6 +10,8 @@
     "deploy": "bin/deploy.sh",
     "deploy:branch": "bin/deploy.sh",
     "setup:zxdb-local": "bin/setup-zxdb-local.sh",
+    "update:hashes": "node bin/update-software-hashes.mjs",
+    "export:hashes": "node bin/update-software-hashes.mjs --export-only",
     "deploy-prod": "git push --set-upstream explorer.specnext.dev deploy",
     "deploy-test": "git push --set-upstream test.explorer.specnext.dev test"
   },

src/server/schema/zxdb.ts

@@ -1,4 +1,4 @@
-import { mysqlTable, int, varchar, tinyint, char, smallint, decimal, text, mediumtext, longtext } from "drizzle-orm/mysql-core";
+import { mysqlTable, int, varchar, tinyint, char, smallint, decimal, text, mediumtext, longtext, bigint, timestamp } from "drizzle-orm/mysql-core";
 
 // Minimal subset needed for browsing/searching
 export const entries = mysqlTable("entries", {
@@ -646,3 +646,16 @@ export const zxsrScores = mysqlTable("zxsr_scores", {
   score: varchar("score", { length: 100 }),
   comments: text("comments"),
 });
+
+// ---- Derived tables (managed by update scripts, not part of ZXDB upstream) ----
+
+// Stores MD5, CRC32 and size of the inner tape file extracted from download zips.
+// Populated by bin/update-software-hashes.mjs; survives DB wipes via JSON snapshot.
+export const softwareHashes = mysqlTable("software_hashes", {
+  downloadId: int("download_id").notNull().primaryKey(),
+  md5: varchar("md5", { length: 32 }).notNull(),
+  crc32: varchar("crc32", { length: 8 }).notNull(),
+  sizeBytes: bigint("size_bytes", { mode: "number" }).notNull(),
+  innerPath: varchar("inner_path", { length: 500 }).notNull(),
+  updatedAt: timestamp("updated_at").notNull().defaultNow(),
+});