When source == "jobgether", build_prompt() injects a recruiter context
note directing the LLM to address the Jobgether recruiter using
"Your client [at {company}] will appreciate..." framing rather than
addressing the employer directly. generate() and task_runner both
thread the is_jobgether flag through automatically.
Replace hard-coded paths (/Library/Documents/JobSearch), names (Alex Rivera),
NDA sets (_NDA_COMPANIES), and the scraper path with UserProfile-driven lookups.
Update tests to be profile-agnostic (no user.yaml in peregrine config dir).
