Pictovap v0.7.8

Pictovap 0.7.8

Pictovap 0.7.8 carries the bounded vision-request path from main into the
published package so downstream users receive predictable token and image-size
behavior.

Vision request budget

• Gemini inline images are downscaled to a 1024px maximum side before upload.
• Long location, title, and label context is bounded before prompt assembly.
• Built-in completion budgets remain explicit: 128 for minimal, 384 for
  technical, and 512 for travel_blog and ecommerce.

Verification

• 244 unit tests passed on Python 3.11.
• Wheel and source distribution built successfully.
• Clean-clone contributor simulation passed, including standalone scaffold
  installation and package tests.