UXP plugin validation failed: manifest version not supported

Goal: Verify that a minimal UXP panel can be loaded in Premiere Pro 2024 (version 24.x) using only developer‑mode flags, without any Adobe I/O credentials, to confirm local‑only functionality before pursuing a signed release.

Constraint: The panel fails with the console error "UXP plugin validation failed: manifest version not supported" when the manifest version declared in the plugin does not match the runtime’s supported range, and it is unclear which manifest version (v6, v7, or a future v8) guarantees compatibility across the 23.x‑24.x line while still allowing access to the limited Premiere Pro UXP API subset that does not require cloud credentials.

• What is the minimum manifest version that Premiere Pro 24.x accepts for unsigned UXP panels?
• Does declaring manifest version v6 provide forward compatibility with upcoming Premiere Pro releases, or must developers target v7?
• Are there any runtime flags or preference settings that can relax manifest version validation for local testing?