Release v4.105.0

Added

• Executable semantic model support for observable collection queries without a key and observable collection queries keyed by one caller-supplied by argument, including canonical JSON for Stage consumers. (part of #536)
• Documentation and contract examples for Stage consumers showing unkeyed list query routes, keyed list query routes, and the unsupported filtered, scoped, performer-backed and source-filled variants. (part of #536)

Fixed

• Screen composition corpus admission now keeps UI/backend ESM refusals while allowing the canonical screen list-query shapes to bind and execute without weakening authorization or protected refusal outcomes. (part of #536)