[codex] Add SHA-3 Keccak hash reporting

[diegog956]

Summary

• add SHA-3 / Keccak-256 hashes alongside MD5 and SHA-256 in the bulk hash table
• include SHA-3 values in CSV, Excel, PDF, Word, and email PDF report exports
• add a System Console entry when SHA-3 is calculated for each file

Fixes #2
/claim #2

Validation

• parsed the inline JavaScript successfully with Node
• verified CryptoJS SHA3-256 output for abc
• loaded the static page in Chrome headless and captured a smoke screenshot

[diegog956]

/claim #2