A truncated or malformed { "summary": "..." } envelope fell through the
status-card parser and rendered raw — braces, the summary property name,
quotes, and literal \n — in the Assessment card (resting pulse and the
other per-metric cards). parseSummaryFromContent returned the raw content
on any JSON parse failure, and a truncated envelope with no closing brace
also fell into that path, so partial structured output reached the reader.
Split the read into extractAssessmentSummary, which classifies a completion
as a parsed summary, genuine prose, or an unparseable structured envelope.
A payload that opened like a JSON object but failed to parse (or parsed
without a usable summary) resolves to the controlled fallback rather than
raw text; plain prose that merely contains a brace is still preserved.
finalizeStatusSummary withholds an unparseable envelope so every status
card serves its deterministic stub, and the two direct callers
(medication compliance, derived-score assessment) get the same guard.
Refs #608
Marc-André Bombeck
93c0d616bb