feat: Add historical context files for team members and update project documentation with Slack archive import details

ai/context/people/jason-mandozzi.md

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+# Jason Mandozzi
+
+## Role
+
+Repeated Fidelity collaborator in XFlow and consumer-integration work.
+
+---
+
+## Known Context
+
+- Closely associated with XFlowViewMaker, Fid4/FTPlanning integration, and release/version work
+- Frequently authored or owned implementation branches later reviewed by others
+- Showed up repeatedly in architecture, eventing, navigation, and consumer-facing integration discussions
+- Often served as an important source of context on historical implementation choices inside XFlow and related consumer flows
+
+---
+
+## Guidance
+
+- Treat Jason as a high-signal source for XFlowViewMaker and consumer integration history
+- If future context clarifies the formal role/team, update this file directly