Cognia 7.3.1 — Windows release alignment and chat-v3 example repair

Applies to: all

Prepared October 24, 2026. This Windows patch release brings the packaged Windows x64 distribution onto the 7.3 tool-capable source line and repairs the community Czech transformer example after the chat-v3 profile introduced in 7.3.0. The Linux 7.3.0 packages remain current; 7.3.1 does not change runtime semantics, public artifact formats, or the experimental status of rag and web-fetch.

Fixed

• Example 17 now declares the complete chat-v3 vocabulary: seven named control tokens plus eight reserved slots. Its generated dialogue corpora close every turn with <|eot|> and close the sequence with <|end|>.
• The Czech Wikipedia corpus downloader rejects every textual chat-v3 marker, keeps complete articles in one deterministic split and emits auditable hashes and provenance without adding generated corpora to the package.
• Windows packaging no longer discards the just-validated Release CMake tree between the build and CPack phases merely because MSVC uses a localized /showIncludes prefix. The next compiling build still performs the normal conservative cache check.
• Windows release metadata, Store identity, installation documentation and package names consistently identify version 7.3.1.

Compatibility and status

• Existing .ctok, .ctm, .ctt, .bin, .cms, .cmod, DPSH snapshots and tool record/replay files remain compatible under the same rules as 7.3.0.
• A chat-v2 model still requires explicit migration with cognia_transformer_tokenizer extend-chat-v3; profile mismatches are rejected.
• rag and web-fetch remain experimental. The infrastructure gate status and model-gate limitations published for 7.3.0 are unchanged.
• The Windows package targets GeForce RTX 50 series GPUs (Compute Capability 12.0) and requires a current NVIDIA driver supporting CUDA 13.2.