CORRECTNESS FIXES:
- json_loader: Add RollbackTransaction() and call it on exception instead of
CommitTransaction(). Prevents partial data corruption on parse/disk errors.
- wikipedia_service: Fix invalid MediaWiki API parameter explaintext=true ->
explaintext=1. Now returns plain text instead of HTML markup in contexts.
- helpers: Fix ParseTwoLineResponse filter to only remove known thinking tags
(<think>, <reasoning>, <reflect>) instead of any <...> pattern. Prevents
silently removing legitimate output like <username>content</username>.
RELIABILITY & DESIGN IMPROVEMENTS:
- load/main: Make n_ctx (context window size) configurable via --n-ctx flag
(default 2048, range 1-32768) to support larger models like Qwen3-14B.
- generate_brewery: Prevent retry prompt growth by extracting location context
into constant and using compact retry format (error + schema + location only).
Avoids token truncation on final retry attempts.
- database: Fix data representativeness by changing QueryCities from
ORDER BY name (alphabetic bias) to ORDER BY RANDOM() for unbiased sampling.
Convert all SQLITE_STATIC to SQLITE_TRANSIENT to prevent use-after-free risks.
POLISH:
- infer: Advance sampling seed between generation calls to improve diversity
across brewery and user generation.
- data_downloader: Remove unnecessary commit hash truncation; use full hash.
- json_loader: Fix misleading log message from "RapidJSON" to "Boost.JSON".
