[TheStreamCode]

Summary

• Treat an uncapped monthly payload as pay-as-you-go in the account summary: chutes-build account and /account report Pay-as-you-go, omit the monthly price/cap, hide the Plus/Pro plan reference, and keep the 4-hour and daily windows plus the PAYG balance.
• list_media_models now returns an explicit message when a category has no available model, and /imagine//imagine-video tell the user that generation is unavailable instead of inventing a model. This covers video, image, music, and speech.
• Update the README, product spec, user guides, and CHANGELOG; bump the release manifests to 2.0.11.

Validation

• cargo test -p chutes-build-core account_summary --lib (6 passed)
• cargo test -p chutes-tools-api slash_commands --lib (10 passed)
• cargo test -p chutes-tools empty_media_message --lib (1 passed)
• cargo test -p chutes-pager account_cmd --lib (3 passed)
• npm run verify:release and npm test (16 passed)
• markdownlint-cli2 README.md (clean)

Notes

The Rust tests were run with the MSVC environment, a Windows protoc on PATH, and AWS_LC_SYS_NO_ASM=1; the repo's DotSlash bin/protoc is not executable on Windows.