97a851bf97
OpenViking v0.3.3 expects directory URIs for abstract/overview reads. Passing pseudo-files like /.overview.md and /.abstract.md to /api/v1/content/overview|abstract triggers HTTP 500. This change normalizes those pseudo-URIs to their parent directory for abstract/overview requests, preserves full reads, and hardens parsing for wrapped/unwrapped result payloads and fs list response shapes.