[codex] add object storage provider benchmark post (#7985)

* add object storage provider benchmark post

* remove in-flight benchmark table

* compact regional benchmark data

* replace benchmark setup flowchart

* add aws object storage latency baseline

* Add bulk throughput benchmark section

* Update bulk throughput benchmark data

* Update object storage benchmark copy

* blog: new hero image, prose cleanup, and review fixes for object storage post

- Replace photographic hero.png with an on-brand comparison-card hero.svg
  (Tigris vs R2 mixed-phase timings) and regenerate meta.png; switch
  frontmatter to hero.svg to match the Compute series
- Remove all em dashes, cut redundancy, and tighten prose for readability
- Fix 50MB -> 50 MiB and drop the duplicated in-body hero image
- Cross-link Prisma Compute (docs + public beta), AWS Lambda, and Bun
- Address review: shorten the Starlink wrap-up (Ankur) and narrow the
  conclusion to accelerated-fs rather than the whole platform (CodeRabbit)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

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Co-authored-by: Ankur Datta <64993082+ankur-arch@users.noreply.github.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: 3 people