- Rewrite _STEP1_SYSTEM_PROMPT: lower matching threshold (no longer requires
"clear" match), strongly prefer existing projects over creating new ones,
use structured id=|name=|status= format with aiSummary for richer context
- Add code-level UUID validation: reject hallucinated ids not in the fetched
projects list, fall back to "new" instead of creating a bad link
- Rewrite _PROCESSING_SYSTEM_PROMPT: enforce explicit scan-before-create
process (read existing → search → update if found → create only if not)
with hard rule against calling create_* without checking existing records
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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