v1.34.0

Generated-artifact feature: each camera in the generated cameras.json (data/, docs/, and downstream mirrors) now carries an added date (YYYY-MM-DD) — derived at build time from git history (git log --diff-filter=A, with --follow fallback for renamed files). Per-camera source files are unchanged and the schema is untouched; added is provenance metadata injected after validation. Powers downstream "recently added" listings and RSS feeds. CI now checks out with full history (fetch-depth: 0) so the stale-artifact check reproduces identical dates.