Fix 169 interactions with null call type

169 interactions have null/None call_type. These were added by the reconciliation script which links transcripts to profiles but only sets a file path — no enriched metadata. Fix options: 1. Parse the transcript filename to infer type (demo/onboarding/meeting/interview) — the type is in the filename 2. Parse the transcript frontmatter for call_type 3. For the 'unknown' rc_rep entries (208 count), same approach — parse from frontmatter or filename Affected interactions can be found with: interactions where type is None or '' or rc_rep is '' or 'unknown'