Synapse v2.1.1 — "non-convergence fixes"

Patch release fixing two related, live-observed ingest non-convergence bugs. No schema migrations, no other changes since 2.1.0.

Fixed

• Non-convergent ingest runs for sources in a raw subfolder: when a source document's raw file lived under a subfolder (e.g. raw/sources/Cloud Licensing/doc.md), the folderContext prompt hint (R7-6) — meant purely as topical context — was worded ambiguously enough ("...when classifying the document and naming/linking pages") that the model would mirror the raw subfolder into the generated source page's file path (wiki/sources/Cloud Licensing/doc.md) instead of the required flat wiki/sources/doc.md (K6). Because retry-with-context re-injects the same hint unchanged on every iteration, the model repeated the identical mistake across all attempts and the run burned its full iteration/token budget non-convergent. Reworded the hint to state plainly that it must never influence a page's file path — source pages always use the exact path given elsewhere in the prompt; entity/concept pages still route only through the schema table or wiki/entities//wiki/concepts/.
• Non-convergent ingest runs from a spurious wiki/log.md FILE block: the generation prompt asked the model to "also" emit a log entry for wiki/log.md, even though append_log() already appends one automatically for every page written (K4) — fully server-managed. The block-loop validator already anticipated a model emitting a log.md block and skips it by exact filename, but a model would sometimes satisfy the redundant instruction with a differently-named file (e.g. wiki/log-entry.txt), which slipped past that guard and failed frontmatter validation identically on every retry. Removed the instruction — the model has no legitimate reason to touch wiki/log.md at all.