[Bug] Claude ignores source docs, misreads units, and acts on feedback-dialog input as work instruction

Bug Description
Built a thermo backend on the wrong composition source and asked about a fix I had already directed. The model said there was "no composition" for streams 16/59 and reported a "37% MW gap" without reading the client's Mole/Weight Balance PDFs. Also said there was no design basis for another system without reading the pipe spec that was clearly in the source folder. It misread the EBP (end boiling point) cut names as "mean" boiling points and missed that the process simulator export gives Pc in psig. These are all things we've addressed before and previously used consistently. It asked me to choose an EOS fix instead of honoring the declared SRK. It also took my "2" (meant for the feedback dialog) as a work instruction and started the next round of work. It's like today is Claude's day off.

Environment Info

• Platform: win32
• Terminal: null
• Version: 2.1.296
• Feedback ID: a293f62d-7963-4030-814b-bf5025fa0515