- Add crypto-level parse and verify tests using real .accdb files
  for RC4 CryptoAPI and NonStandard AES (matching existing Agile test)
- Add validation tests with synthetic data: EncryptionInfo too short,
  header_size overflow, invalid RC4/AES key sizes, invalid
  verifier_hash_size (zero and >20)
- Strengthen nonstandard_aes_read_table to verify actual row values
  (ID=1, Field1="test")

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Add DateTimeExtended variant to ColumnType enum (0x14, 42 bytes fixed)
- Add format_ext_datetime() to timestamp.rs for ISO 8601 formatting
- Add Value::DateTimeExtended variant and parsing logic in data.rs
- Add DDL type mappings for all 4 dialects (Access/PostgreSQL/MySQL/SQLite)
- Add DateTimeExtended handling to CLI export and prop commands
- Add unit tests and integration tests with extDateTestV2019.accdb

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Create testdata/SOURCES.md recording the origin of all test files (Jackcess / jackcessencrypt / independently created)
- Add jackcessencrypt to acknowledgments in README.md / README.ja.md with link to SOURCES.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

…ntegration

- Add Agile encryption data read tests (db2007-enc.accdb, db2013-enc.accdb, enc_vbaV2007.accdb)
- Add Jet RC4 (.mdb) data read tests (v2000, v2003, overflow)
- Add CLI integration tests for RC4 CryptoAPI / NonStandard AES / Agile (tables, export, schema)
- Add test data db2007-enc.accdb and db2013-enc.accdb from jackcessencrypt
- Fix SOURCES.md source URL and upstream path for jackcessencrypt

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Add AES-192 CBC decryption support (aes_cbc_decrypt, decrypt_page_agile)
- Wrap intermediate secret values with Zeroizing<Vec<u8>> in 6 crypto functions
  (derive_key, verify_password, verify_password_rc4_cryptoapi,
  verify_password_standard_aes, iterate_hash_sha1, derive_standard_aes_key)
- Update README (EN/JA) Features/Limitations to list all supported encryption
  schemes (Agile, RC4 CryptoAPI, Standard/NonStandard AES)
- Fix jackcessencrypt URL to jahlborn/jackcessencrypt; generalize MS-OFFCRYPTO
  description
- Add comment explaining absence of Standard AES test (no test data available)
- Document why DateTimeExtended uses String representation
- Add 4 boundary-value tests for parse_ext_datetime (short buffer, all zeros,
  non-UTF-8, non-digit)
- Extract shared CLI test helpers (test_data_path, skip_if_missing!, jetdb_bin)
  into common/mod.rs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Results were not published anywhere; both checks remain available
locally via scripts/quality-check.sh.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Verify the declared MSRV with `cargo check` on Rust 1.85.
Runs in parallel with clippy and audit, as a prerequisite for test.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>